Description:FORM 2

THE PATENTS ACT, 1970
(39 of 1970)
&
The Patents Rules, 2003

COMPLETE SPECIFICATION
(See Section 10 and Rule 13)

A FLUID GUIDING DEVICE FOR AN INTERNAL COMBUSTION ENGINE AND A METHOD THEREOF

APPLICANT:

TVS MOTOR COMPANY LIMITED, an Indian Company at: “Chaitanya”, No.12 Khader Nawaz Khan Road, Nungambakkam, Chennai 600 006.

The following specification particularly describes the invention and the manner in which it is to be performed.

TECHNICAL FIELD
[0001] The present subject matter relates generally to a fluid guiding device for an internal combustion engine and method for guiding a fluid thereof. More particularly but not exclusively, the present subject matter relates to a fluid guiding device for implementing a breather mechanism and method thereof of an internal combustion engine of a vehicle.

BACKGROUND
[0002] Internal combustion engines operate through the ignition of air and fuel in combustion chamber. During reciprocation of one or more pistons, the gases from the combustion chamber may escape, past the pistons, to the crankcase of the engine and a blow-by of gas occurs. These blow-by gases consist of a complex mixture of air, burned and unburned gases, lubricant and/or lubricant mist such as oil mist. These blow-by gases or blow-by fluids, if not ventilated, inevitably condense and combine with the oil vapor present in the crankcase, forming oil sludge or causing the oil to become diluted with unburned fuel. Excessive crankcase pressure can furthermore lead to engine oil leakages past the crankshaft seals and other engine seals and gaskets. Therefore, it becomes imperative that a crankcase ventilation system or breather system be implemented in the internal combustion engine.
[0003] There is a lack of any integrated mechanism, within the crankcase, for ventilation of blow-by gases. This requires systematic and preordained the diversion of blow-by gases to the combustion chamber so that the blow-by gases can eventually escape through an exhaust port on cylinder head. This process involves a longer path for the blow-by gases to travel. Thus, optimization of the flow of blow-by gases is not achieved and efficient operation of the engine is adversely affected.
[0004] Furthermore, conventional crankcase systems employ paper gaskets for joining the crankcase portions such as a first crankcase and a second crankcase, which are approximately 0.5mm thick, to create a seal between the crankcases. The first crankcase and second crankcase can be the right hand side and the left hand side crankcase respectively, or vice versa. These paper gaskets, which are non-asbestos, serve the purpose of sealing and also allow the passage of blow-by gases through breather holes. However, the paper gasket, despite having breather holes, lacks an efficient mechanism to regulate and define the flow of blow-by gases. This leads to suboptimal flow control and can potentially hinder the engine's performance in addition to leaking or seeping of lubricant mist which could be potentially re-used. Another disadvantage of paper gaskets is the need to procure, handle, and replace these gaskets during maintenance or repair operations. Replacement of paper gaskets is not only a time-consuming and a tedious process but the chances for errors or misalignment of paper gaskets are also high. As a result, paper gaskets may form a seal which is non-durable and unreliable. This unfavorably impacts the servicing process and increases the associated costs and time required for servicing. Further, the paper gaskets are not suitable to address the problem of floating in internal combustion engines. Floating refers to the occurrence of unwanted movement or instability in engine components, often caused by improper sealing.
[0005] In order to overcome the limitations of paper gaskets, a variety of liquid gaskets is used. These liquid gaskets have a consistency of a thick paste for application on the sealing surfaces of the crankcases. When the crankcases are assembled, the liquid gasket is compressed and spreads over the sealing surfaces, forming a thin membrane. This thin membrane fulfils the sealing function required for the engine. By using a liquid gasket instead of paper gaskets, the engine's serviceability is improved, and the overall cost is reduced. Further, the issue of floating in engine can be controlled by use of liquid gasket. However, the liquid gasket cannot accommodate the breather holes that were configurable in the paper gasket. This means that when the liquid gasket is used, there is no direct, predefined and efficient path for the blow-by gases to escape. As a result, an additional arrangement is required to be introduced between the crankcases to facilitate the flow of these gases.
[0006] To address the need for facilitating the flow of blow-by gases between the crankcases, a solution is introduced in the form of a fluid-guiding device. The use of disclosed fluid-guiding device along with the liquid gasket provides for an integrated ventilation system for the blow-by gases within the crankcase. Therefore, the requirement of diverting the blow-by gases back to the cylinder head along a longer path successfully done away with.
[0007] Further, the disclosed fluid-guiding device optimizes the flow of blow-by gases by providing a definite path for the blow-by gases to escape. As a result, the ventilation system of the crankcase becomes more efficient. Additionally, the fluid-guiding device allows for the usage of a liquid gasket, offering a range of advantages. These advantages include reliable and durable crankcase seal, improved serviceability, reduced associated costs, lowered vibrations and reduced float. All of these factors contribute for a more efficient and reliable engine system.

BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The details are described with reference to an embodiment of a fluid guiding device (200) for an internal combustion engine (100). The same numbers are used throughout the drawings to refer similar features and components.
[0009] Figure 1 illustrates a side perspective view of an internal combustion engine (100) in accordance with one embodiment of the invention. .
[0010] Figure 2 illustrates a top view of an internal combustion engine (100) in accordance with one embodiment of the invention.
[0011] Figure 3 illustrates a sectional view of the internal combustion engine (100) along an axis A-A as shown in figure 2 in accordance with one embodiment of the invention
[0012] Figure 4 illustrates a side view of a first crankcase (101) of the internal combustion engine (100) in accordance with one embodiment of the invention.
[0013] Figure 5a illustrates a perspective view of a first surface (S1) of a fluid guiding device (200) in accordance with one embodiment of the invention.
[0014] Figure 5b illustrates a perspective view of a second surface (S2) of a fluid guiding device (200) in accordance with one embodiment of the invention.
[0015] Figure 6a illustrates a perspective view of a first surface (S1) of a fluid guiding device (200) along with a movement of a blow-by fluid in accordance with one embodiment of the invention.
[0016] Figure 6b illustrates a perspective view of a second surface (S2) of a fluid guiding device (200) along with a movement of a blow-by air in accordance with one embodiment of the invention.
[0017] Figure 7a illustrates a perspective view of a first surface (S1) of a fluid guiding device (200) along with a movement of a liquid oil in accordance with one embodiment of the invention.
[0018] Figure 7b illustrates a perspective view of a second surface (S2) of a fluid guiding device (200) along with a movement of a liquid oil in accordance with one embodiment of the invention.
[0019] Figure 8 illustrates an exploded view of the internal combustion engine (100) in accordance with one embodiment of the invention.
[0020] Figure 9 illustrates a method (900) for guiding a fluid in an internal combustion engine (100).

SUMMARY OF THE INVENTION
[0021] The present subject matter relates generally to a fluid guiding device for an internal combustion engine. The fluid guiding device comprises a first surface, a second surface, a plurality of walls, a plurality of partition members, a plurality of first surface chambers, a plurality of second surface chambers, and a plurality of breathing holes. The first surface is provided on a first side of the fluid guiding device. The first surface is configured to face a first crankcase of the internal combustion engine. The second surface is provided on a second side of the fluid guiding device. The second surface is configured to face a second crankcase of the internal combustion engine. The plurality of walls extends along a periphery of the first surface and along a periphery of the second surface of the fluid guiding device. The plurality of partition members extends from predefined locations on the first surface and the second surface of the fluid guiding device. The plurality of first surface chambers is provided on the first surface. The plurality of first surface chambers is partially confined by the first surface, the plurality of walls on the first surface and the plurality of partition members on the first surface. The plurality of second surface chambers is provided on the second surface. The plurality of second surface chambers is partially confined by the second surface, the plurality of walls on the second surface and the plurality of partition members on the second surface. The plurality of breathing holes is positioned at predefined portions of the fluid guiding device in order to connect the plurality of first surface chambers with the plurality of second surface chambers. The plurality of first surface chambers, the plurality of second surface chambers and the plurality of breathing holes are configured to guide a fluid through a predefined pathway.
[0022] The present subject matter also relates to a method for guiding a fluid in an internal combustion engine. The method comprises a first step, a second step, a third step, a fourth step, a fifth step and a sixth step. In the first step, the fluid from an interior of a first crankcase and an interior of a second crankcase is received by a plurality of first surface chambers and a plurality of second surface chambers located in a lower portion of a fluid guiding device. In the second step, the fluid is guided to the plurality of first surface chambers and the plurality of second surface chambers located in an upper portion of the fluid guiding device by the plurality of partition members through a plurality of breathing holes and a plurality of gaps. In the third step, a condensation of the fluid takes place on the plurality of first surface chambers and the plurality of second surface chambers. This results in the separation of a condensed fluid from an uncondensed fluid. In the fourth step, the uncondensed fluid is transmitted to an exterior of the first crankcase and an exterior of the second crankcase. In the fifth step, the condensed fluid is allowed to percolate. The percolation of the condensed fluid is guided by the plurality of partition members, to the plurality of first surface chambers and the plurality of second surface chambers located in the lower portion of the fluid guiding device through the plurality of breathing holes and the plurality of gaps. In the sixth step, the condensed fluid is collected within the interior of the first crankcase and the interior of the second crankcase.
[0023] The present invention further relates to an internal combustion engine. The internal combustion engine comprises a first crankcase, a second crankcase, and a fluid guiding device. The fluid guiding device is disposed in between the first crankcase and the second crankcase at an upper-most portion of the internal combustion engine. The fluid guiding device comprises a first surface, a second surface, a plurality of walls, a plurality of partition members, a plurality of first surface chambers, a plurality of second surface chambers, and a plurality of breathing holes. The first surface is provided on a first side of the fluid guiding device. The first surface is configured to face a first crankcase of the internal combustion engine. The second surface is provided on a second side of the fluid guiding device. The second surface is configured to face a second crankcase of the internal combustion engine. The plurality of walls extends along a periphery of the first surface and along a periphery of the second surface of the fluid guiding device. The plurality of partition members extends from predefined locations on the first surface and the second surface of the fluid guiding device. The plurality of first surface chambers is provided on the first surface. The plurality of first surface chambers is partially confined by the first surface, the plurality of walls on the first surface and the plurality of partition members on the first surface. The plurality of second surface chambers is provided on the second surface. The plurality of second surface chambers is partially confined by the second surface, the plurality of walls on the second surface and the plurality of partition members on the second surface. The plurality of breathing holes is positioned at predefined portions of the fluid guiding device in order to connect the plurality of first surface chambers with the plurality of second surface chambers. The plurality of first surface chambers, the plurality of second surface chambers and the plurality of breathing holes are configured to guide a fluid through a predefined pathway. It is also possible to have more than one fluid guiding device with the features described herein to achieve the objects of the invention.

DETAILED DESCRIPTION
[0024] In order to overcome one or more of the above-mentioned challenges, the present invention provides a fluid guiding device for an internal combustion engine, a method for guiding a fluid in an internal combustion engine, and an internal combustion engine.
[0025] One embodiment of the invention relates to a fluid guiding device for an internal combustion engine. The fluid guiding device comprises a first surface, a second surface, a plurality of walls, a plurality of partition members, a plurality of first surface chambers, a plurality of second surface chambers, and a plurality of breathing holes. The first surface is provided on a first side of the fluid guiding device. The first surface is configured to face a first crankcase of the internal combustion engine. The second surface is provided on a second side of the fluid guiding device. The second surface is configured to face a second crankcase of the internal combustion engine. The plurality of walls extends along a periphery of the first surface and along a periphery of the second surface of the fluid guiding device. The plurality of partition members extends from predefined locations on the first surface and the second surface of the fluid guiding device. The plurality of first surface chambers is provided on the first surface. The plurality of first surface chambers is partially confined by the first surface, the plurality of walls on the first surface and the plurality of partition members on the first surface. The plurality of second surface chambers is provided on the second surface. The plurality of second surface chambers is partially confined by the second surface, the plurality of walls on the second surface and the plurality of partition members on the second surface. The plurality of breathing holes is positioned at predefined portions of the fluid guiding device in order to connect the plurality of first surface chambers with the plurality of second surface chambers. The plurality of first surface chambers, the plurality of second surface chambers and the plurality of breathing holes are configured to guide a fluid through a predefined pathway.
[0026] As per one embodiment of the invention, the fluid guiding device is configured to be disposed in between the first crankcase and the second crankcase of the internal combustion engine at an upper-most portion of the internal combustion engine.
[0027] As per one embodiment of the invention, the fluid guiding device is provided with at least one mounting hole. The at least one mounting hole is configured to engage with at least one fastening member in order to detachably attach the fluid guiding device to one of the first crankcase and the second crankcase.
[0028] As per one embodiment of the invention, the plurality of first surface chambers and the plurality of second surface chambers comprising a plurality of gaps. The plurality of gaps are configured to allow the plurality of first surface chambers and the plurality of second surface chambers to be partially confined.
[0029] As per one embodiment of the invention, a profile of the plurality of first surface chambers is configured to conform with a profile of a plurality of first corresponding cavities of the first crankcase. The plurality of first surface chambers are configured to interface with the plurality of first corresponding cavities. Further, a profile of the plurality of second surface chambers is configured to conform with a profile of a plurality of second corresponding cavities of the second crankcase. The plurality of second surface chambers are configured to interface with the plurality of second corresponding cavities.
[0030] As per one embodiment of the invention, the fluid includes a blow-by air. The blow-by air is received by the plurality of first surface chambers and the plurality of second surface chambers located in a lower portion of the fluid guiding device from an interior of the first crankcase and an interior of the second crankcase respectively.
[0031] As per one embodiment of the invention, the plurality of partition members is configured to guide the blow-by air to the plurality of first surface chambers and the plurality of second surface chambers located in an upper portion of the fluid guiding device through the plurality of breathing holes and a plurality of gaps. The blow-by air is received into one of the plurality of first corresponding cavities and the plurality of second corresponding cavities in an upper portion of the one of the first crankcase and the second crankcase respectively.
[0032] As per one embodiment of the invention, one of the first crankcase and the second crankcase comprises at least one outlet. The at least one outlet is connected to one of the plurality of first corresponding cavities and the plurality of second corresponding cavities in an upper portion of the one of the first crankcase and the second crankcase. The at least one outlet is configured to transmit the blow-by air received to an exterior of the first crankcase and the second crankcase. As per one embodiment of the invention, the at least one outlet is configured to transmit the blow-by air to an air filter of the internal combustion engine through a conduit.
[0033] As per one embodiment of the invention, the plurality of first surface chambers and the plurality of second surface chambers located in the lower portion of the fluid guiding device are configured to receive the blow-by air from a differential through at least one inlet. The at least one inlet is provided on one of the first crankcase and the second crankcase.
[0034] As per one embodiment of the invention, a liquid gasket is used to seal a contact between the first side of the fluid guiding device and the first crankcase. The liquid gasket is used to seal a contact between the second side of the fluid guiding device and the second crankcase. The liquid gasket is also used to seal a contact between the first crankcase and the second crankcase.
[0035] Another embodiment of the invention relates to a method for guiding a fluid in an internal combustion engine. The method comprises a first step, a second step, a third step, a fourth step, a fifth step and a sixth step. In the first step, the fluid from an interior of a first crankcase and an interior of a second crankcase is received by a plurality of first surface chambers and a plurality of second surface chambers located in a lower portion of a fluid guiding device. In the second step, the fluid is guided to the plurality of first surface chambers and the plurality of second surface chambers located in an upper portion of the fluid guiding device by the plurality of partition members through a plurality of breathing holes and a plurality of gaps. In the third step, a condensation of the fluid takes place on the plurality of first surface chambers and the plurality of second surface chambers. This results in the separation of a condensed fluid from an uncondensed fluid. In the fourth step, the uncondensed fluid is transmitted to an exterior of the first crankcase and an exterior of the second crankcase. In the fifth step, the condensed fluid is allowed to percolate. The percolation of the condensed fluid is guided, by the plurality of partition members, to the plurality of first surface chambers and the plurality of second surface chambers located in the lower portion of the fluid guiding device through the plurality of breathing holes and the plurality of gaps. In the sixth step, the condensed fluid is collected within the interior of the first crankcase and the interior of the second crankcase.
[0036] As per another embodiment of the invention, the uncondensed fluid in the disclosed method is a mixture of blow-by air and a mist of a lubricant and the condensed fluid is the lubricant.
[0037] As per another embodiment of the invention, the fluid guiding device in the disclosed method is disposed in between the first crankcase and the second crankcase of the internal combustion engine, at an upper-most portion of the internal combustion engine.
[0038] As per another embodiment of the invention, the fluid guiding device in the disclosed method is provided with at least one mounting hole. The at least one mounting hole is configured to engage with at least one fastening member in order to detachably attach the fluid guiding device to one of the first crankcase and the second crankcase.
[0039] As per another embodiment of the invention, in the disclosed method, a profile of the plurality of first surface chambers is configured to conform with a profile of a plurality of first corresponding cavities of the first crankcase. The plurality of first surface chambers is configured to interface with the plurality of first corresponding cavities. A profile of the plurality of second surface chambers is configured to conform with a profile of a plurality of second corresponding cavities of the second crankcase. The plurality of second surface chambers is configured to interface with the plurality of second corresponding cavities.
[0040] Yet another embodiment of the invention relates to an internal combustion engine. The internal combustion engine comprises a first crankcase, a second crankcase, and a fluid guiding device. The fluid guiding device is disposed in between the first crankcase and the second crankcase at an upper-most portion of the internal combustion engine. The fluid guiding device comprises a first surface, a second surface, a plurality of walls, a plurality of partition members, a plurality of first surface chambers, a plurality of second surface chambers, and a plurality of breathing holes. The first surface is provided on a first side of the fluid guiding device. The first surface is configured to face a first crankcase of the internal combustion engine. The second surface is provided on a second side of the fluid guiding device. The second surface is configured to face a second crankcase of the internal combustion engine. The plurality of walls extends along a periphery of the first surface and along a periphery of the second surface of the fluid guiding device. The plurality of partition members extends from predefined locations on the first surface and the second surface of the fluid guiding device. The plurality of first surface chambers is provided on the first surface. The plurality of first surface chambers is partially confined by the first surface, the plurality of walls on the first surface and the plurality of partition members on the first surface. The plurality of second surface chambers is provided on the second surface. The plurality of second surface chambers is partially confined by the second surface, the plurality of walls on the second surface and the plurality of partition members on the second surface. The plurality of breathing holes is positioned at predefined portions of the fluid guiding device in order to connect the plurality of first surface chambers with the plurality of second surface chambers. The plurality of first surface chambers, the plurality of second surface chambers and the plurality of breathing holes are configured to guide a fluid through a predefined pathway.
[0041] As per yet another embodiment of the invention, a liquid gasket is used to seal a contact between the first side of the fluid guiding device and the first crankcase. The liquid gasket is used to seal a contact between the second side of the fluid guiding device and the second crankcase. The liquid gasket is used to seal a contact between the first crankcase and the second crankcase.
[0042] As per yet another embodiment of the invention, the plurality of first surface chambers and the plurality of second surface chambers comprising a plurality of gaps. The plurality of gaps is configured to allow the plurality of first surface chambers and the plurality of second surface chambers to be partially confined.
[0043] As per yet another embodiment of the invention, a profile of the plurality of first surface chambers is configured to conform with a profile of a plurality of first corresponding cavities of the first crankcase. The plurality of first surface chambers is configured to interface with the plurality of first corresponding cavities. A profile of the plurality of second surface chambers is configured to conform with a profile of a plurality of second corresponding cavities of the second crankcase. The plurality of second surface chambers being configured to interface with the plurality of second corresponding cavities.
[0044] As per yet another embodiment of the invention, the fluid guiding device is provided with at least one mounting hole. The at least one mounting hole is configured to engage with at least one fastening member in order to detachably attach the fluid guiding device to one of the first crankcase and the second crankcase.
[0045] As per yet another embodiment of the invention, one of the first crankcase and the second crankcase comprises at least one outlet. The at least one outlet is connected to one of the plurality of first corresponding cavities and the plurality of second corresponding cavities in an upper portion of the one of the first crankcase and the second crankcase. The at least one outlet is configured to transmit the fluid received to an exterior of the first crankcase and the second crankcase.
[0046] The embodiments of the present invention will now be described in detail with reference to an embodiment of an internal combustion engine (100) with a fluid guiding device (200), along with the accompanying drawings. However, the disclosed invention is not limited to the present embodiments.
[0047] The embodiments shown in Figure 1, Figure 2, Figure 3 and Figure 4 are taken together for discussion. Figure 1 illustrates a side perspective view of an internal combustion engine (100) in an assembled form without the cylinder block (not shown) and cylinder head (not shown). Figure 2 illustrates a top view of an internal combustion engine (100). Figure 3 illustrates a sectional view of the internal combustion engine (100) along an axis A-A as shown in figure 2. Figure 4 illustrates a side view of a first crankcase (101) of the internal combustion engine (100).
[0048] The internal combustion engine (100) comprises a first crankcase (101) and a second crankcase (102). The first crankcase (101) and the second crankcase (102) (referred together as crankcases) are joined together along an interface. The crankcases (102, 103) are configured to house and support the crankshaft (not shown ) which is rotated upon the four stroke or two stroke action of the piston in the cylinder block (not shown). Along with the crankshaft there are several other moving components that are housed in the crankcases along with a storage portion containing a lubricant such as an oil. Upon rotation of the crankshaft and other moving parts, the blow-by air is generated which needs to be vented out. The blow-by air can also contain a mixture of various exhaust gases seeped through the cylinder head and the cylinder block during or after combustion stroked. This can also include a mist of the lubricant which may vaporize or splash during operation. In order to effectively vent the blow-by air in an efficient manner and to overcome the problems described in the background, the present invention further discloses a fluid guiding device (200). The fluid guiding device (200) is disposed in between the first crankcase (101) and the second crankcase (102) at an upper-most portion of the internal combustion engine (100). The fluid guiding device (200) comprises a first surface (S1, shown in fig. 5a), a second surface (S2, shown in fig. 5a), a plurality of walls (201, shown in fig. 5a), a plurality of partition members (202, shown in fig. 5a), a plurality of first surface chambers (203F, shown in fig. 5a), a plurality of second surface chambers (203S, shown in fig. 5a), and a plurality of breathing holes (204, shown in fig. 5a). The first surface (S1) is provided on a first side of the fluid guiding device (200). The first surface (S1) is configured to face the first crankcase (101). The second surface (S2) is provided on a second side of the fluid guiding device (200). The second surface (S2) is configured to face the second crankcase (102).
[0049] In a preferred embodiment, fluid guiding device (200) is in a shape of a plate. The plate has a first side and a second side both facing diametrically opposite directions. The outermost layer of the fluid guiding device (200) on the first side is a first surface (S1). Similarly, the outermost layer of the fluid guiding device (200) on the second side is a second surface (S2). The first surface (S1) on the first side is configured to face a first crankcase (101). The second surface (S2) on the second side is configured to face a second crankcase (102). However, the shape of the fluid guiding device (200) is not limited to the shape of the plate. The fluid guiding device (200) can be in any form or shape with a first side and a second side facing respective crankcases (101, 102). The plurality of walls (201) extends along a periphery of the first surface (S1) and along a periphery of the second surface (S2) of the fluid guiding device (200). More specifically, the plurality of walls (201) is situated along the boundaries or edges of both the first surface (S1) and the second surface (S2) and serving to enclose the peripheries of both the first surface (S1) and the second surface (S2) of the fluid guiding device (200). This arrangement contributes to defining and containing the shape and space occupied by the fluid guiding device (200), providing a clear depiction of its outer borders along the first surface (S1) and the second surface (S2). The plurality of partition members (202) extends from predefined locations on the first surface (S1) and the second surface (S2). The at least one of the plurality of partition members (202) is provided on the predefined locations of the first surface (S1) in order to partially confine the first surface chambers (203F) on the first surface (S1). Similarly, the plurality of partition members (202) is provided on the predefined locations of the second surface (S2) in order to partially confine the plurality of second surface chambers (203S) on the second surface (S2). Further, the plurality of partition members (202) is provided on the predefined locations of the first surface (S1) and the second surface (S2) in order to align with the walls of the first corresponding cavities (103, shown fig. 4) and second corresponding cavities (104, shown in fig. 3) respectively. Thus, in this embodiment, the predefined locations of the plurality of partition members (202) on the first surface (S1) and the second surface (S2) is also governed by the respective location of the walls of the first corresponding cavities (103) and the second corresponding cavities (104).
[0050] The plurality of first surface chambers (203F) is provided on the first surface (S1). The plurality of first surface chambers (203F) is partially confined by the first surface (S1), the plurality of walls (201) and the plurality of partition members (202). Similarly, the plurality of second surface chambers (203S) is provided on the second surface (S2). The plurality of second surface chambers (203S) is partially confined by the second surface (S2), the plurality of walls (201) and the plurality of partition members (202). The plurality of breathing holes (204) is positioned at predefined portions of the fluid guiding device (200) to connect the plurality of first surface chambers (203F) with the plurality of second surface chambers (203S). The plurality of partition members (202), the plurality of first surface chambers (203F), the plurality of second surface chambers (203S) and the plurality of breathing holes (204) are configured to guide a fluid through a predefined pathway.
[0051] The fluid includes a blow-by air from the internal combustion engine (100). The blow-by air is received by the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in a lower portion of the fluid guiding device (200). The fluid is received from an interior of the first crankcase (101) and an interior of the second crankcase (102) respectively. The lower portion of the fluid guiding device (200) is the portion of the fluid guiding device (200) which is close to the bottom of the internal combustion engine (100) including the general area of disposition of the crankshaft and the lubricant storage portion (not shown). The upper portion of the fluid guiding device (200) is the portion of the fluid guiding device (200) which is close to the top of the internal combustion engine (100).
[0052] In the assembled condition, the fluid guiding device (200) is disposed in between the first crankcase (101) and the second crankcase (102). The first side of the fluid guiding device (200) interfaces with the first crankcase (101) in order to form a contact. A liquid gasket (not shown) is used to seal the contact between the first side of the fluid guiding device (200) and the first crankcase (101). Similarly, the second side of the fluid guiding device (200) interfaces with the second crankcase (102) in order to form a contact. The liquid gasket is used to seal a contact between the second side of the fluid guiding device (200) and the second crankcase (102). When the internal combustion engine (100) is assembled, the first crankcase (101) interfaces with the second crankcase (102) in order to form a contact while the fluid guiding device (200) being therebetween. The liquid gasket is used to seal the contact between the first crankcase (101) and the second crankcase (102). A profile of the plurality of first surface chambers (203F) is configured to conform with a profile of a plurality of first corresponding cavities (103) of the first crankcase (101). The plurality of first surface chambers (203F) is configured to interface with the plurality of first corresponding cavities (103). The profile of the plurality of first surface chambers (203F) is defined by the shape of the plurality of first surface chambers (203F) outlined by the plurality of walls (201) and the plurality of partition members (202) on the first surface (S1). The profile of the plurality of first corresponding cavities (103) is defined by the shape of the plurality of first corresponding cavities (103) enclosed by the plurality of walls on the first crankcase (101). Further, a profile of the plurality of second surface chambers (203S) is also configured to conform with a profile of a plurality of second corresponding cavities (104) of the second crankcase (102). The plurality of second surface chambers (203S) is configured to interface with the plurality of second corresponding cavities (104). The profile of the plurality of second surface chambers (203S) is the shape of the plurality of second surface chambers (203S) outlined by the plurality of walls (201) and the plurality of partition members (202) on the second surface (S2). The profile of the plurality of second corresponding cavities (104) is the shape of the plurality of second corresponding cavities (104) enclosed by the plurality of walls on the second crankcase (102).This way the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) form a substantially enclosed space with the plurality of first corresponding cavities (103) and plurality of second corresponding cavities (104) respectively to enable the flow of the fluid including, but not limited to the blow by air, in the pre-defined pathway. The wall of the first crankcase (101) and the second crankcase (102) are specifically designed in order to align with the plurality of walls (201) and the plurality of partition members (202) of the fluid guiding device (200). The plurality of walls (201) is extended from predefined position in order to sit in a precise position on the walls of the plurality of first corresponding cavities (103) and the plurality of second corresponding cavities (104).
[0053] The plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) comprises a plurality of gaps (206, shown in fig. 5a). The plurality of gaps (206) allows the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) to be partially confined. Further, the fluid guiding device (200) is provided with at least one mounting hole (205H). The at least one mounting hole (205H) is configured to engage with at least one fastening member (205S). This enables a detachable attachment of the fluid guiding device (200) to one of the first crankcase (101) and the second crankcase (102).
[0054] One of the first crankcase (101) and the second crankcase (102) comprises at least one outlet (207). The at least one outlet (207) is connected to one of the plurality of first corresponding cavities (103) and the plurality of second corresponding cavities (104) in an upper portion of the one of the first crankcase (101) and the second crankcase (102). The at least one outlet (207) is configured to transmit the received fluid to an exterior of the first crankcase (101) and the second crankcase (102).
[0055] The embodiments of the present invention will now be described in detail with reference to an embodiment of a fluid guiding device (200) for an internal combustion engine (100), along with the accompanying drawings. However, the disclosed invention is not limited to the present embodiments.
[0056] The embodiments shown in Figure 5a, Figure 5b, Figure 6a, Figure 6b, Figure 7a and Figure 7b are taken together for discussion. Figure 5a illustrates a perspective view of a first surface (S1) of a fluid guiding device (200). Figure 5b illustrates a perspective view of a second surface (S2) of a fluid guiding device (200). Figure 6a illustrates a perspective view of a first surface (S1) of a fluid guiding device (200) along with a movement of a blow-by air. Figure 6b illustrates a perspective view of a second surface (S2) of a fluid guiding device (200) along with a movement of a blow-by air. Figure 7a illustrates a perspective view of a first surface (S1) of a fluid guiding device (200) along with a movement of a liquid oil. Figure 7b illustrates a perspective view of a second surface (S2) of a fluid guiding device (200) along with a movement of a liquid oil.
[0057] The fluid guiding device (200) comprises the first surface (S1), a second surface (S2), a plurality of walls (201), a plurality of partition members (202), a plurality of first surface chambers (203F), a plurality of second surface chambers (203S) and a plurality of breathing holes (204). The first surface (S1) is provided on a first side of the fluid guiding device (200). The first surface (S1) is configured to face a first crankcase (101, shown in fig. 1) of the internal combustion engine (100). The second surface (S2) is provided on a second side of the fluid guiding device (200). The second surface (S2) is configured to face a second crankcase (102, shown in fig. 1) of the internal combustion engine (100). The plurality of walls (201) extends along a periphery of the first surface (S1) and along a periphery of the second surface (S2) of the fluid guiding device (200). The plurality of partition members (202) extends from predefined locations on the first surface (S1) and the second surface (S2) of the fluid guiding device (200). The plurality of first surface chambers (203F) is provided on the first surface (S1). The plurality of first surface chambers (203F) is partially confined by the first surface (S1), the plurality of walls (201) on the first surface (S1) and the plurality of partition members (202) on the first surface (S1). The plurality of second surface chambers (203S) is provided on the second surface (S2). The plurality of second surface chambers (203S) is partially confined by the second surface (S2), the plurality of walls (201) on the second surface (S2) and the plurality of partition members (202) on the second surface (S2). The plurality of breathing holes (204) is positioned at predefined portions of the fluid guiding device (200). The plurality of breathing holes (204) connects the plurality of first surface chambers (203F) with the plurality of second surface chambers (203S). The plurality of partition members (202), the plurality of first surface chambers (203F), the plurality of second surface chambers (203S) and the plurality of breathing holes (204) are configured to guide the fluid through the predefined pathway as defined by the fluid guiding device (200) and the corresponding plurality of cavities in the first and second crankcases (101, 102).
[0058] The plurality of walls (201) is situated along the boundaries or edges of both the first surface (S1) and the second surface (S2). The plurality of walls (201) encloses the peripheries of both the first surface (S1) and the second surface (S2) of the fluid guiding device (200). This arrangement contributes to defining and containing the shape and space occupied by the fluid guiding device (200). Thus, providing a clear depiction of the outer borders of both the first surface (S1) and the second surface (S2).
[0059] In a preferred embodiment, fluid guiding device (200) is in a shape of a plate. The plate has a first side and a second side. The outermost layer of the fluid guiding device (200) on the first side is a first surface (S1). Similarly, the outermost layer of the fluid guiding device (200) on the second side is a second surface (S2). The first surface (S1) on the first side is configured to face a first crankcase (101). The second surface (S2) on the second side is configured to face a second crankcase (102). However, the shape of the fluid guiding device (200) is not limited to the shape of the plate. The fluid guiding device (200) can be in any form or shape which is provided with a first side and a second side. The fluid guiding device (200) is made up of same material as the first crankcase (101) and the second crankcase (102) as the fluid guiding device (200) is subjected to the same amount of temperature stresses. Materials like aluminium, iron, spheroidal graphite cast iron and steel are used for making the fluid guiding device (200). Further, the fluid guiding device (200) can also be made of polymers which can sustain through the high temperature of the internal combustion engine (100).
[0060] The extension of the plurality of partition members (202) from predefined locations on the first surface (S1) and the second surface (S2) enables the plurality of partition members (202) to guide the fluid along the predefined pathway. The plurality of partition members (202) is provided on the predefined locations of the first surface (S1) in order to partially confine the first surface chambers (203F) on the first surface (S1). Similarly, the plurality of partition members (202) is provided on the predefined locations of the second surface (S2) in order to partially confine the plurality of second surface chambers (203S) on the second surface (S2). Further, the plurality of partition members (202) is provided on the predefined locations of the first surface (S1) and the second surface (S2) in order to align with the walls of the first corresponding cavities (103, shown fig. 4) and second corresponding cavities (104, shown in fig. 3) respectively. As a result, the plurality of first surface chambers (203F) conform with a profile of the plurality of first corresponding cavities (103). The plurality of second surface chambers (203S) conform with the profile of plurality of second corresponding cavities (104).
[0061] The pattern of the plurality of partition members (202) can be modified based on the orientation of the crankcases (101, 102) and the desired path for the blow-by gases. Different configurations of the internal combustion engine (100), may require specific patterns of the plurality of partition members (202) to achieve the most efficient breathing performance. The shape, size, and arrangement of the of the plurality of partition members (202) can be adjusted accordingly to promote smooth and controlled airflow within the fluid guiding device (200).
[0062] The plurality of breathing holes (204) is positioned at a predefined portions of the fluid guiding device (200). The predefined portion is the lower portion of the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S). This enables the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) to receive the blow-by air which tends to rise as it is warm. Additionally, the plurality of breathing holes (204) at a predefined portions allow the liquid oil to percolate instead of getting collected in the lower portion of the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S). The plurality of breathing holes (204) plays a critical role in maintaining the flow of blow-by air/gases between the crankcases (101, 102). They allow the blow-by gases to pass from one of the crankcases (101, 102) to the another. Thus, ensuring a proper ventilation and pressure regulation within the internal combustion engine (100). The number of breathing holes (204) incorporated in the fluid guiding device (200) can also vary based on the specific requirements of the internal combustion engine (100) and to achieve maximum breathing efficiency. The size, shape, and distribution of these breathing holes (204) can be adjusted to ensure optimal airflow and pressure regulation within the crankcases (102, 101).
[0063] The fluid is guided by the plurality of partition members (202) and the plurality of breathing holes (204) along the predefined pathway. The predefined pathway is across the plurality of second surface chambers (203S) and the plurality of breathing holes (204) which are partially confined and are interconnected. The predefined pathway is a breather circuit defined by the plurality of partition members (202) through the plurality of breathing holes (204) and the plurality of gaps (206) in order to direct a movement of the blow-by air. This helps in achieving regulated and controlled movement of the fluid which ensures more efficient breathing. This also avoids the random and sub-optimized movement of the fluid.
[0064] This configuration enables the implementation of an integrated breather design within the crankcases (101, 102). Therefore, the need to divert the blow-by gases to the cylinder head and make them take a longer route is eliminated. Instead, the blow-by gases can flow directly through the fluid guiding device (200), resulting in a more streamlined and efficient breathing process for the internal combustion engine (100).
[0065] The plurality of partition members (202) is configured to guide the blow-by air received by the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in the lower portion of the fluid guiding device (200). The blow-by air received is guided to the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in an upper portion of the fluid guiding device (200). The blow-by air received is guided through the plurality of breathing holes (204) and a plurality of gaps (206). The blow-by air is received into one of the plurality of first corresponding cavities (103) and the plurality of second corresponding cavities (104) in an upper portion of the one of the first crankcase (101, shown in fig. 1) and the second crankcase (102, shown in fig. 1).
[0066] One of the first crankcase (101, shown in fig. 1) and the second crankcase (102, shown in fig. 1) comprises at least one outlet (207, shown in fig. 1). The at least one outlet (207, shown in fig. 1) is connected to one of the plurality of first corresponding cavities (103) and the plurality of second corresponding cavities (104) in an upper portion of the one of the first crankcase (101, shown in fig. 1) and the second crankcase (102, shown in fig. 1). The at least one outlet (207, shown in fig. 1) is configured to transmit the blow-by air received to an exterior of the first crankcase (101) and the second crankcase (102, shown in fig. 1). Once the liquid oil is separated from the blow-by gases, they are collected in either of the crankcases (101, 102), preventing their circulation and potential contamination of other components of the internal combustion engine (100). Meanwhile, the blow-by gases continue their flow, passing through the breathing holes (204) and finding their way out via the breather pipes (207). This arrangement ensures effective separation of liquid oil and proper ventilation of blow-by gases. The at least one outlet (207) is configured to transmit the blow-by air to an air filter (not shown) of the internal combustion engine (100) through a conduit. The conduit can be made using materials known in the art such as flexible rubber or other polymers. The conduit can also be made of metal and can be configured to be bent to conform to the contour profile of the internal combustion engine (100).
[0067] The plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in the lower portion of the fluid guiding device (200) are configured to receive the blow-by air from other systems of the vehicle such as but not limited to a differential (not shown) through at least one inlet (208, shown in fig. 1). While in conventional engine assemblies, the differential may be installed far from the internal combustion engine (100), in some integrated assemblies, such as in two-wheelers or three wheelers, the internal combustion engine (100) may be assembled along with transmission assembly such as gear box assembly. In one aspect the same assembly can also include the components constituting the differential assembly to provide torque to two or more rotating members of the vehicle. The rotation of the differential in such an assembly can also generate blow-by air which can be successfully vented by the present configuration of the invention. The at least one inlet (208) is provided on one of the first crankcase (101, shown in fig. 1) and the second crankcase (102, shown in fig. 1). By connecting the differential to the fluid guiding device (200), the embodiment provides a comprehensive solution for managing blow-by gases not only from the internal combustion engine (100) but also from the differential. This helps maintain the overall efficiency and functionality of the vehicle's drivetrain while ensuring proper ventilation and oil separation within the fluid guiding device (200).
[0068] The fluid can also include a lubricant such as oil of the internal combustion engine (100). The oil is carried by a blow-by air as an oil mist from the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in a lower portion of the fluid guiding device (200). The oil mist is carried to the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in an upper portion of the fluid guiding device (200) through the plurality of breathing holes (204) and a plurality of gaps (206).
[0069] The plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) is configured to enable a condensation of the oil mist into a liquid oil thereby separating the liquid oil from the blow-by air. The plurality of partition members (202) is configured to enable a percolation of the liquid oil from the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in the upper portion of the fluid guiding device (200). The liquid oil is percolated to the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in the lower portion of the fluid guiding device (200). The percolation occurs through the plurality of breathing holes (204) and the plurality of gaps (206).
[0070] In the assembled condition, the fluid guiding device (200) is disposed in between the first crankcase (101) and the second crankcase (102). The first side of the fluid guiding device (200) interfaces with the first crankcase (101) in order to form a contact. A liquid gasket is used to seal the contact between the first side of the fluid guiding device (200) and the first crankcase (101, shown in fig. 1). Similarly, the second side of the fluid guiding device (200) interfaces with the second crankcase (102) in order to form a contact. The liquid gasket is used to seal the contact between the second side of the fluid guiding device (200) and the second crankcase (102, shown in fig. 1). When the internal combustion engine (100) is assembled, the first crankcase (101) interfaces with the second crankcase (102) in order to form a contact while the fluid guiding device (200) being present therebetween. The liquid gasket is used to seal a contact between the first crankcase (101, shown in fig. 1) and the second crankcase (102, shown in fig. 1). When the crankcases (101, 102) are assembled, the liquid gasket is compressed and spreads over the sealing surfaces, forming a thin membrane. This thin membrane fulfils the sealing function required for the internal combustion engine (100). Further, the liquid gasket does not block the plurality of breathing holes (204). Therefore, the ventilation of the blow-by air remains unobstructed without compromising with the reliable and durable sealing of the crankcases (101, 102).
[0071] The liquid gaskets refer to fluid-like substances that exhibit a liquid state at normal room temperature. Once these materials are applied onto a surface (such as crankcases (101, 102)) where two parts meets, they gradually undergo a drying process over a specific duration. The intended outcome of this process is to create a flexible and strong membrane or a thin layer with a viscous consistency. This resulting structure effectively functions as a barrier or coating that resides between the connected surfaces of a joint or threaded connection. Further, the liquid gaskets establish an effective seal that prevents leaks or seepage and to provide a locking mechanism that securely holds the components (such as crankcase (101)) together. Furthermore, the liquid gaskets serve the purpose of ensuring a reliable and durable connection while guarding against potential fluid leakage or unintended disengagement. In one aspect, the fluid guiding device (200) is provided with at least two first surface chambers (203F), at least two second surface chambers (203S), at least two first corresponding cavities (103) and at least two second corresponding cavities (104).
[0072] Alternatively, the fluid guiding device (200) can be provided with ‘N’ number of first surface chambers (203F), ‘N’ number of second surface chambers (203S), ‘N’ number of first corresponding cavities (103) and ‘N’ number of second corresponding cavities (104). The number ‘N’ is a variable. The variable is dependent upon a capacity of the internal combustion engine (100). By adjusting the number of the first surface chambers (203F) and the second surface chambers (203S), the design of the fluid guiding device (200) can be tailored to enhance the efficiency of breathing. Thus, ensuring the blow-by gases/air to follow the intended route and are effectively separated from the oil mist.
[0073] Figure 8 illustrates an exploded view of the internal combustion engine (100). The fluid guiding device (200) is configured to be disposed in between the first crankcase (101, shown in fig. 1) and the second crankcase (102, shown in fig. 1) of the internal combustion engine (100) at an upper-most portion of the internal combustion engine (100).
[0074] The placement of the fluid guiding device (200) is strategically chosen to be in the topmost corner of the crankcases (101, 102). This positioning ensures that all the rising blow-by gases are directed towards this area. The selection of the topmost corner is based on the orientation in which the internal combustion engine (100) is mounted. Thus, ensuring that the fluid guiding device (200) effectively captures the upward flow of blow-by gases. By situating the fluid guiding device (200) in this location, it becomes the designated pathway for the rising blow-by gases to pass through the breathing holes (204).
[0075] The fluid guiding device (200) is provided with at least one mounting hole (205H). The at least one mounting hole (205H) is configured to engage with at least one fastening member (205S) in order to detachably attach the fluid guiding device (200) to one of the first crankcase (101, shown in fig. 1) and the second crankcase (102, shown in fig. 1) of the internal combustion engine (100, shown in fig. 1). These at least one mounting hole (205H) is strategically positioned to align with corresponding seating holes on the crankcases (101, 102), ensuring proper alignment and attachment of the fluid guiding device (200). The at least one fastening member (205S) includes, but not limited to, a screw. The screw is inserted through the mounting holes (205H) on the breather plate and are threaded into the corresponding seating holes on the crankcases (101, 102). The fasteners or mounting screws are tightened to secure the fluid guiding device (200) firmly onto the crankcases (101, 102), ensuring a robust and stable attachment. This secure attachment is crucial to ensure that the fluid guiding device (200) remains in place and functions effectively throughout the operation of the internal combustion engine (100).
[0076] The embodiments of the present invention will now be described in detail with reference to method (900) for guiding a fluid in an internal combustion engine (100), along with the accompanying drawings. However, the disclosed invention is not limited to the present embodiments. Figure 9 illustrates the method (900) for guiding the fluid in the internal combustion engine (100).
[0077] The method (900) comprises a first step (901), a second step (902), a third step (903), a fourth step (904), a fifth step (905) and a sixth step (906). In the first step (901), the fluid is received by a plurality of first surface chambers (203F) and a plurality of second surface chambers (203S) located in a lower portion of a fluid guiding device (200) from an interior of a first crankcase (101) and an interior of a second crankcase (102). In the second step (902), the fluid received is guided to the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in an upper portion of the fluid guiding device (200). The fluid received is guided by the plurality of partition members (202) through a plurality of breathing holes (204) and a plurality of gaps (206). In the third step (903), a condensation of the fluid takes place on the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S). This separates a condensed fluid from an uncondensed fluid. In the fourth step (904), the uncondensed fluid is transmitted from the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in the upper portion of the fluid guiding device (200). The uncondensed fluid is transmitted to an exterior of the first crankcase (101) and an exterior of the second crankcase (102). In the fifth step, a percolation of the condensed fluid is guided by the plurality of partition members (202) from the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in the upper portion of the fluid guiding device (200). The condensed fluid is guided to the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in the lower portion of the fluid guiding device (200). The percolation of the condensed fluid occurs through the plurality of breathing holes (204) and the plurality of gaps (206) as a fifth step (905). The condensed fluid is guided to the lower portion of the fluid guiding device (200) during its percolation. This percolation can be defined as per meaning known in the art i.e. is the downward movement of the condensed fluid under the influence of gravity. The plurality of partition members (202) guides the percolation by channelizing it along a predefined pathway through the plurality of breathing holes (204) and the plurality of gaps (206).
[0078] In the sixth step, the condensed fluid is collected within the interior of the first crankcase (101) and the interior of the second crankcase (102). The lower portion of the fluid guiding device (200) is the portion of the fluid guiding device (200) which is close to the bottom of the internal combustion engine (100). The upper portion of the fluid guiding device (200) is the portion of the fluid guiding device (200) which is close to the top of the internal combustion engine (100). The uncondensed fluid is a blow-by air and the condensed fluid is a liquid oil. The fluid guiding device (200) is disposed in between the first crankcase (101) and the second crankcase (102) of the internal combustion engine (100) at an upper-most portion of the internal combustion engine (100). In this method (900), the fluid guiding device (200) is provided with at least one mounting hole (205H). The at least one mounting hole (205H) engages with at least one fastening member (205S). This enables the detachable attachment of the fluid guiding device (200) to one of the first crankcase (101) and the second crankcase (102) of the internal combustion engine (100).
[0079] A profile of the plurality of first surface chambers (203F) in this method (900) conforms with a profile of a plurality of first corresponding cavities (103) of the first crankcase (101). The plurality of first surface chambers (203F) being configured to interface with the plurality of first corresponding cavities (103). The plurality of first surface chambers (203F) is configured to interface with the plurality of first corresponding cavities (103). The profile of the plurality of first surface chambers (203F) is the shape of the plurality of first surface chambers (203F) outlined by the plurality of walls (201) and the plurality of partition members (202) on the first surface (S1). The profile of the plurality of first corresponding cavities (103) is the shape of the plurality of first corresponding cavities (103) enclosed by the plurality of walls (201) on the first crankcase (101). A profile of the plurality of second surface chambers (203S) conforms with a profile of a plurality of second corresponding cavities (104) of the second crankcase (102). The plurality of second surface chambers (203S) being configured to interface with the plurality of second corresponding cavities (104). The profile of the plurality of second surface chambers (203S) is the shape of the plurality of second surface chambers (203S) outlined by the plurality of walls (201) and the plurality of partition members (202) on the second surface (S2). The profile of the plurality of second corresponding cavities (104) is the shape of the plurality of second corresponding cavities (104) enclosed by the plurality of walls (201) on the second crankcase (102).
[0080] The presently disclosed fluid guiding device (200) addresses the need for facilitating the flow of blow-by gases between the crankcases (101, 102). The disclosed fluid guiding device (200) optimizes the flow of blow-by gases by providing a definite path for the blow-by gases to escape. As a result, ventilation system of the crankcases (101, 102) becomes more efficient. The fluid guiding device (200) enables the use of liquid gasket without restricting the ventilation of the blow-by gases. Allowing the use of the liquid gasket offer a range of advantages. These advantages include reliable and durable crankcase seal, improved serviceability, reduced associated costs, lowered vibrations and reduced float.
[0081] The solution provided by present invention, departure from the inherently complex practice of housing the breather unit in the cylinder head cover. Instead, the present invention provides the predefined path to the blow-by gases through the crankcases (101, 102) itself. Additionally, by utilizing the fluid guiding device (200), the requirement to incorporate separate chambers and openings in the design is eliminated.
[0082] Further, the use of the fluid guiding device (200) avoids the requirement of diverting the blow-by gases back to the cylinder head along a longer path. Additionally, the present invention completely eliminates the use of paper gaskets. This shift from paper to liquid gasket has multiple benefits. Firstly, it allows for the complete elimination of the paper gasket, simplifying the engine's construction and reducing the number of components required. This reduction in components not only makes the engine assembly process more straightforward but also contributes to overall cost savings. The utilization of the fluid guiding device (200) and liquid gasket in combination not only improves the ease of serviceability but also provides cost benefits. Further, the utilization of the liquid gasket, made possible by the presence of the fluid guiding device (200), improves the ease of serviceability. The liquid gasket can be easily applied and spread over the sealing surfaces, creating a reliable and durable seal. During maintenance or repairs, the liquid gasket can be easily replaced without the need to handle and install paper gaskets. This results in elimination of errors or any misalignment associated with the use of paper gaskets. Further, the integration of the liquid gasket and the fluid guiding device (200) forms a thin membrane and provides a secure seal between the crankcases (101, 102) and accordingly, the potential for float is reduced. This leads to improved engine performance, reduced vibration, and enhanced reliability. Furthermore, with the integrated fluid guiding device (200) in the crankcases (101, 102), the flow of blow-by gases is optimized, reducing the distance they need to travel and improving the efficiency of the internal combustion engine (100).
[0083] The fluid guiding device (200) promotes the condensation of the oil mist on its surfaces (S1, S2) thereby preventing the oil mist to escape with the blow-by air. Consequently, the present invention helps in meeting emission regulations and curbing the release of pollutants in the form of unburnt fuel. Separation of the oil from blow-by air prevents the oil from their circulating and potentially contaminating the other components of the internal combustion engine (100).
[0084] For example, as used in this specification and the appended claims, the singular forms “a,” “an” and “they” can include plural referents unless the content clearly indicates otherwise. Further, when introducing elements/components/etc. of the assembly/system described and/or illustrated herein, the articles “a”, “an”, “the”, and “said” are intended to mean that there is one or more of the element(s)/component(s)/etc. The terms “comprising”, “including”, and “having” are intended to be inclusive and mean that there may be additional element(s)/component(s)/etc. other than the listed element(s)/component(s)/etc.
[0085] This written description uses examples to provide details on the disclosure, including the best mode, and also to enable any person skilled in the art to practice the disclosure, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the disclosure is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal language of the claims. It is to be understood that the aspects of the embodiments are not necessarily limited to the features described herein. Many modifications and variations of the present subject matter are possible in the light of above disclosure.

LIST OF REFERENCE NUMERALS

100 Internal combustion engine
101 First crankcase
102 Second crankcase
200 Fluid guiding device
S1 First surface
S2 Second surface
201 Plurality of walls
202 Plurality of partition members
203F Plurality of first surface chambers
203S Plurality of second surface chambers
204 Plurality of breathing holes
205H At least one mounting hole
205S At least one fastening member
206 Plurality of gaps
207 At least one outlet
208 At least one inlet
, C , Claims:We Claim:
1. A fluid guiding device (200) for an internal combustion engine (100), the fluid guiding device (200) comprising:
a first surface (S1), the first surface (S1) being provided on a first side of the fluid guiding device (200) and the first surface (S1) being configured to face a first crankcase (101) of the internal combustion engine (100);
a second surface (S2), the second surface (S2) being provided on a second side of the fluid guiding device (200) and the second surface (S2) being configured to face a second crankcase (102) of the internal combustion engine (100);
a plurality of walls (201), the plurality of walls (201) extending along a periphery of the first surface (S1) and along a periphery of the second surface (S2) of the fluid guiding device (200);
a plurality of partition members (202), the plurality of partition members (202) extending from predefined locations on the first surface (S1) and the second surface (S2) of the fluid guiding device (200);
a plurality of first surface chambers (203F), the plurality of first surface chambers (203F) being provided on the first surface (S1), and the plurality of first surface chambers (203F) being partially confined by the first surface (S1), the plurality of walls (201) on the first surface (S1) and the plurality of partition members (202) on the first surface (S1);
a plurality of second surface chambers (203S), the plurality of second surface chambers (203S) being provided on the second surface (S2), and the plurality of second surface chambers (203S) being partially confined by the second surface (S2), the plurality of walls (201) on the second surface (S2) and the plurality of partition members (202) on the second surface (S2);
a plurality of breathing holes (204), the plurality of breathing holes (204) being positioned at predefined portions of the fluid guiding device (200) to connect the plurality of first surface chambers (203F) with the plurality of second surface chambers (203S); and
the plurality of partition members (202), the plurality of first surface chambers (203F), the plurality of second surface chambers (203S) and the plurality of breathing holes (204) being configured to guide a fluid through a predefined pathway.
2. The fluid guiding device (200) for the internal combustion engine (100) as claimed in claim 1, wherein the fluid guiding device (200) being configured to be disposed in between the first crankcase (101) and the second crankcase (102) of the internal combustion engine (100) at an upper-most portion of the internal combustion engine (100).
3. The fluid guiding device (200) for the internal combustion engine (100) as claimed in claim 1, wherein the fluid guiding device (200) being provided with at least one mounting hole (205H), the at least one mounting hole (205H) being configured to engage with at least one fastening member (205S) in order to detachably attach the fluid guiding device (200) to one of the first crankcase (101) and the second crankcase (102) of the internal combustion engine (100).
4. The fluid guiding device (200) for the internal combustion engine (100) as claimed in claim 1, wherein the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) comprising a plurality of gaps (206), the plurality of gaps (206) being configured to allow the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) to be partially confined.
5. The fluid guiding device (200) for the internal combustion engine (100) as claimed in claim 1, wherein a profile of the plurality of first surface chambers (203F) being configured to conform with a profile of a plurality of first corresponding cavities (103) of the first crankcase (101), the plurality of first surface chambers (203F) being configured to interface with the plurality of first corresponding cavities (103); and a profile of the plurality of second surface chambers (203S) being configured to conform with a profile of a plurality of second corresponding cavities (104) of the second crankcase (102), the plurality of second surface chambers (203S) being configured to interface with the plurality of second corresponding cavities (104).
6. The fluid guiding device (200) for the internal combustion engine (100) as claimed in claim 5, wherein the fluid including a blow-by air from the internal combustion engine (100), the blow-by air being received by the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in a lower portion of the fluid guiding device (200) from an interior of the first crankcase (101) and an interior of the second crankcase (102) respectively.
7. The fluid guiding device (200) for the internal combustion engine (100) as claimed in claim 6, wherein the plurality of partition members (202) being configured to guide the blow-by air to the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in an upper portion of the fluid guiding device (200) through the plurality of breathing holes (204) and a plurality of gaps (206); and the blow-by air being received into one of the plurality of first corresponding cavities (103) and the plurality of second corresponding cavities (104) in an upper portion of the one of the first crankcase (101) and the second crankcase (102) respectively.
8. The fluid guiding device (200) for the internal combustion engine (100) as claimed in claim 7, wherein one of the first crankcase (101) and the second crankcase (102) comprising at least one outlet (207), the at least one outlet (207) being connected to one of the plurality of first corresponding cavities (103) and the plurality of second corresponding cavities (104) in an upper portion of the one of the first crankcase (101) and the second crankcase (102), the at least one outlet (207) being configured to transmit the blow-by air received to an exterior of the first crankcase (101) and the second crankcase (102).
9. The fluid guiding device (200) for the internal combustion engine (100) as claimed in claim 8, wherein the at least one outlet (207) being configured to transmit the blow-by air to an air filter of the internal combustion engine (100) through a conduit.
10. The fluid guiding device (200) for the internal combustion engine (100) as claimed in claim 6, wherein the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in the lower portion of the fluid guiding device (200) being configured to receive the blow-by air from a differential through at least one inlet (208), the at least one inlet (208) being provided on one of the first crankcase (101) and the second crankcase (102).
.
11. The fluid guiding device (200) for the internal combustion engine (100) as claimed in claim 2, wherein a liquid gasket being used to seal a contact between the first side of the fluid guiding device (200) and the first crankcase (101) and a contact between the second side of the fluid guiding device (200) and the second crankcase (102) and the liquid gasket being used to seal a contact between the first crankcase (101) and the second crankcase (102).
12. A method (900) for guiding a fluid in an internal combustion engine (100), the method (900) comprising a plurality of steps of:
receiving the fluid by a plurality of first surface chambers (203F) and a plurality of second surface chambers (203S) located in a lower portion of a fluid guiding device (200) from an interior of a first crankcase (101) and an interior of a second crankcase (102) as a first step (901);
guiding the fluid received in the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in the lower portion of the fluid guiding device (200) to the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in an upper portion of the fluid guiding device (200) by a plurality of partition members (202) through a plurality of breathing holes (204) and a plurality of gaps (206) as a second step (902);
allowing a condensation of the fluid by the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) thereby separating a condensed fluid from an uncondensed fluid as a third step (903);
transmitting the uncondensed fluid from the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in the upper portion of the fluid guiding device (200) to an exterior of the first crankcase (101) and an exterior of the second crankcase (102) as a fourth step (904);
guiding a percolation of the condensed fluid by the plurality of partition members (202) from the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in the upper portion of the fluid guiding device (200) to the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) located in the lower portion of the fluid guiding device (200) through the plurality of breathing holes (204) and the plurality of gaps (206) as a fifth step (905); and
collecting the condensed fluid with in the interior of the first crankcase (101) and the interior of the second crankcase (102) as a sixth step (906).
13. The method (900) for guiding the fluid in the internal combustion engine (100) as claimed in claim 12, wherein the fluid being blow-by air, the uncondensed fluid comprising burnt gases, unburnt gases and other gaseous components and the condensed fluid being lubricant.
14. The method (900) for guiding the fluid in the internal combustion engine (100) as claimed in claim 12, wherein the fluid guiding device (200) being disposed between the first crankcase (101) and the second crankcase (102) of the internal combustion engine (100) at an upper-most portion of the internal combustion engine (100).
15. The method (900) for guiding the fluid in the internal combustion engine (100) as claimed in claim 12, wherein the fluid guiding device (200) being provided with at least one mounting hole (205H), the at least one mounting hole (205H) being configured to engage with at least one fastening member (205S) in order to detachably attach the fluid guiding device (200) to one of the first crankcase (101) and the second crankcase (102) of the internal combustion engine (100).
16. The method (900) for guiding the fluid in the internal combustion engine (100) as claimed in claim 12, wherein a profile of the plurality of first surface chambers (203F) being configured to conform with a profile of a plurality of first corresponding cavities (103) of the first crankcase (101), the plurality of first surface chambers (203F) being configured to interface with the plurality of first corresponding cavities (103) and a profile of the plurality of second surface chambers (203S) being configured to conform with a profile of a plurality of second corresponding cavities (104) of the second crankcase (102), the plurality of second surface chambers (203S) being configured to interface with the plurality of second corresponding cavities (104).
17. An internal combustion engine (100), the internal combustion engine (100) comprising:
a first crankcase (101);
a second crankcase (102);
a fluid guiding device (200), the fluid guiding device (200) being disposed in between the first crankcase (101) and the second crankcase (102) at an upper-most portion of the internal combustion engine (100), the fluid guiding device (200) comprising:
a first surface (S1), the first surface (S1) being provided on a first side of the fluid guiding device (200) and the first surface (S1) being configured to face the first crankcase (101);
a second surface (S2), the second surface (S2) being provided on a second side of the fluid guiding device (200) and the second surface (S2) being configured to face the second crankcase (102);
a plurality of walls (201), the plurality of walls (201) extending along a periphery of the first surface (S1) and along a periphery of the second surface (S2) of the fluid guiding device (200);
a plurality of partition members (202), the plurality of partition members (202) extending from predefined locations on the first surface (S1) and the second surface (S2) of the fluid guiding device (200);
a plurality of first surface chambers (203F), the plurality of first surface chambers (203F) being provided on the first surface (S1), and the plurality of first surface chambers (203F) being partially confined by the first surface (S1), the plurality of walls (201) on the first surface (S1) and the plurality of partition members (202) on the first surface (S1);
a plurality of second surface chambers (203S), the plurality of second surface chambers (203S) being provided on the second surface (S2), and the plurality of second surface chambers (203S) being partially confined by the second surface (S2), the plurality of walls (201) on the second surface (S2) and the plurality of partition members (202) on the second surface (S2); and
a plurality of breathing holes (204), the plurality of breathing holes (204) being positioned at predefined portions of the fluid guiding device (200) to connect the plurality of first surface chambers (203F) with the plurality of second surface chambers (203S);
the plurality of partition members (202), the plurality of first surface chambers (203F), the plurality of second surface chambers (203S) and the plurality of breathing holes (204) being configured to guide a fluid through a predefined pathway.
18. The internal combustion engine (100) as claimed in claim 17, wherein a liquid gasket being used to seal a contact between the first side of the fluid guiding device (200) and the first crankcase (101) and a contact between the second side of the fluid guiding device (200) and the second crankcase (102); and the liquid gasket being used to seal a contact between the first crankcase (101) and the second crankcase (102).
19. The internal combustion engine (100) as claimed in claim 17, wherein the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) comprising a plurality of gaps (206), the plurality of gaps (206) being configured to allow the plurality of first surface chambers (203F) and the plurality of second surface chambers (203S) to be partially confined.
20. The internal combustion engine (100) as claimed in claim 17, wherein a profile of the plurality of first surface chambers (203F) being configured to conform with a profile of a plurality of first corresponding cavities (103) of the first crankcase (101), the plurality of first surface chambers (203F) being configured to interface with the plurality of first corresponding cavities (103); and a profile of the plurality of second surface chambers (203S) being configured to conform with a profile of a plurality of second corresponding cavities (104) of the second crankcase (102), the plurality of second surface chambers (203S) being configured to interface with the plurality of second corresponding cavities (104).
21. The internal combustion engine (100) as claimed in claim 17, wherein the fluid guiding device (200) being provided with at least one mounting hole (205H), the at least one mounting hole (205H) being configured to engage with at least one fastening member (205S) in order to detachably attach the fluid guiding device (200) to one of the first crankcase (101) and the second crankcase (102) of the internal combustion engine (100).
22. The internal combustion engine (100) as claimed in claim 21, one of the first crankcase (101) and the second crankcase (102) comprising at least one outlet (207), the at least one outlet (207) being connected to one of the plurality of first corresponding cavities (103) and the plurality of second corresponding cavities (104) in an upper portion of the one of the first crankcase (101) and the second crankcase (102), the at least one outlet (207) being configured to transmit the fluid received to an exterior of the first crankcase (101) and the second crankcase (102).

Dated this 25th day of August, 2023

(Digitally Signed)
Sudarshan Singh Shekhawat
IN/PA-1611
Agent for the Applicant