Description:A DEFLECTOR IN AN INTAKE MANIFOLD

TECHNICAL FIELD
[0001] The present subject matter described herein relates to fuel injection for an internal combustion engine. The present invention is particularly related to an intake manifold connected to a cylinder in an internal combustion engine. More particularly, the present invention relates to a deflector for effectively distributing the air and fuel flow in a first and a second intake ports of the intake manifold.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present subject matter. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] The intake manifold is the component of the engine that connects the cylinders to the throttle body in an internal combustion engine. Its major function in a multi-cylinder engine is to equally distribute airflow between each cylinder and to create a homogeneous fuel-air mixture. The volumetric efficiency of an engine is heavily influenced by the mass flow rate of air entering the cylinders.
[0004] Referring to FIG.1, in an existing design, there is an intake manifold (101) and the intake manifold (101) is further divided into a first port (102) and a second port (103). The first port (102) and the second port (103) are then connected to the cylinder (104).
[0005] Therefore, the air is provided into the intake manifold (101) angularly as the base of the intake manifold (101) is angled in a single direction. A fuel injector pocket (105) is also directly placed on the intake manifold (101). The fuel injector pocket (105) measures gaseous fuel such as CNG and injects it into the intake manifold (101). However, it is observed that the air is flowed into one port such as a first port (102) more than the other port such as the second port (103) due to the angled intake manifold (101).
[0006] As a result, the percentage of airflow between both the ports is affected, consequently leading to uneven distribution of air and fuel mixture. This further leads to deviation in tumble flow and affects the overall combustion of the engine.
[0007] If the uneven distribution of fuel and air is prolonged, the efficiency of the engine is reduced.
[0008] Therefore, it is required to provide a design to provide equal distribution of fuel and air mixture into the first port and the second port.

OBJECTS OF THE DISCLOSURE

[0009] It forms an object of the present disclosure to overcome the aforementioned and other drawbacks/limitations in the existing solutions available in the form of related prior arts.
[0010] It is a primary object of the present disclosure to provide equal distribution of air and fuel into first and second ports.
[0011] It is another object of the present disclosure to improve the mixing of fuel and air in the cylinder.
[0012] It is another object of the present disclosure to allow reverse flow from a cylinder during the overlap region.
[0013] It is another object of the present disclosure to provide a cost-effective way of distributing air and fuel into the first and second ports.
[0014] These and other objects and advantages of the present subject matter will be apparent to a person skilled in the art after consideration of the following detailed description taken into consideration with accompanying drawings in which preferred embodiments of the present subject matter are illustrated.

SUMMARY
[0015] A solution to one or more drawbacks of existing technology and additional advantages are provided through the present disclosure. Additional features and advantages are realized through the technicalities of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered to be a part of the claimed disclosure.
[0016] The present disclosure provides a solution in the form of an intake manifold in an internal combustion engine. The intake manifold includes a deflector surrounding a fuel injector pocket and having a first side, a second side and a third side, wherein the first side is elongated towards the right side of the deflector, wherein the second side is curved from a top end to a bottom end to match a profile A of the intake manifold, wherein the third side is curved towards a top end and gradually moves inwards towards a bottom end of the third side and away from profile B of the intake manifold.
[0017] In an aspect, wherein a curved profile plane is provided to connect a second end of the first side to the bottom end of the second side.
[0018] In an aspect, a passage is provided between the curved profile plane and the third side of the deflector.
[0019] In an aspect, the passage is configured to allow a reverse flow during overlap region.
[0020] In an aspect, the cross-section area of the third side of the deflector increases from the top end to the bottom end of the third side.
[0021] In an aspect, the first side of the intake manifold is perpendicular to the second side and the third side of the deflector.
[0022] In an aspect, the second side and the third side of the deflector are parallel to each other.
[0023] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS
[0024] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the present disclosure may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods or structure in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which:
[0025] Fig. 1 illustrates a sectional view of an intake manifold along with first and second ports according to the present disclosure;
[0026] Fig. 2(a) illustrates a deflector provided on the intake manifold according to the present disclosure;
[0027] Fig. 2(b) illustrates the passage provided in between the deflector according to the present disclosure;
[0028] Fig. 3 illustrates a detailed view of the deflector according to the present disclosure.
[0029] The figures depict embodiments of the present subject matter for illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION OF INVENTION
[0030] The detailed description of various exemplary embodiments of the disclosure is described herein with reference to the accompanying drawings. It should be noted that the embodiments are described herein in such detail as to communicate the disclosure. However, the amount of details provided herein is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0031] It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present disclosure. Moreover, all statements herein reciting principles, aspects, and embodiments of the present disclosure, as well as specific examples, are intended to encompass equivalents thereof.
[0032] It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
[0033] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0034] In the following detailed description of the embodiments of the disclosure, reference is made to the accompanying drawings that form a part hereof, and in which are shown by way of illustration of specific embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the scope of the present disclosure. The following description is, therefore, not to be taken in a limiting sense.
[0035] Hereinafter, a description of an embodiment with several components in communication with each other does not imply that all such components are required. On the contrary, a variety of optional components are described to illustrate the wide variety of possible embodiments of the present disclosure.
[0036] The present invention discloses a deflector provided inside the intake manifold. The deflector evenly distributes the air and fuel mixture to a first and second ports and also provides a passage for proper reverse flow.
[0037] Referring to FIG. 2, it shows the intake manifold (101) and a deflector (200) is provided on the intake manifold (101). The deflector (200) has a U-shape and is provided around a fuel injector pocket (105) from one side.
[0038] The deflector (200) further has three sides, namely a first side (201), a second side (202) and a third side (203). The first side (201) is perpendicular to the airflow direction. The second side (202) is provided adjacent to a profile A of the intake manifold (101) and the third side (203) is provided adjacent to a profile B of the intake manifold (101). Further, the second side (202) and the third side (203) are positioned parallel to each other.
[0039] The second side (202) and the third side (203) are positioned such as to provide a passage (204) for the air and fuel mixture to provide a way for allowing the reverse flow obtained from the cylinder (104) (as illustrated in FIG. 1) during an overlap region (Gas Exchange Top Dead Center (TDC)) when piston is moving upwards.
[0040] FIG. 3 discloses the deflector (200). As described in the above paragraph, the deflector (200) has the first side (201), the second side (202) and the third side (203). The first side (201) is perpendicular to the second side (202) and the third side (203). While the second side (202) and the third side (203) are parallel to one another.
[0041] The shape of the first side (201) is angled so as to meet the direction of the inclined flow of air that comes from above. Therefore the first strike of the air flow first hits the first side (201) whose one end is connected to the second side (202).
[0042] The second side (202) is connected to a first end (301) of the first side (201) and is elongated in a vertical downwards direction towards the first and second ports (102, 103). The shape of the second side (202) is curved from a top end (307) (that is connected to the first end (301) of the first side (201)) to a bottom end (303) to match a profile A of the intake manifold (101). Therefore, a streamline flow is obtained in the space between the second side (202) of the deflector (200) and the profile A of the intake manifold (101) to further flow in the second port (103).
[0043] Further, second end (302) of the first side (201) and the bottom end (303) of the second side (202) are connected to each other by a curved profile plane (304). The periphery of the curved profile plane (304) has a shape to accommodate the fuel injector pocket (105) (as provided in FIG. 1).
[0044] Furthermore, the third side (203) of the deflector (200) is curved towards a top end (305) and gradually moves inwards towards a bottom end (306) of the third side (203) and away from profile B of the intake manifold (101). The cross-section area of the third side (203) of the deflector (200) increases from the top (305) to the bottom (306).
[0045] The shape of the third side (203) is made such so that, to provide more space between the profile B of the intake manifold (101) and the third side (203) such that the a streamlined and similar airflow goes into the first port (102).
[0046] Lastly, the passage (204) is provided between the curved profile plane (304) and the third side (203). The passage (204) is configured to allow reverse flow of air and fuel obtained from the cylinder (104) (as illustrated in FIG. 1) during overlap region (Gas Exchange TDC) when a piston moves in upwards direction.
TECHNICAL ADVANTAGES
[0047] With the help of the solution as proposed herein in the context of the present disclosure, there is an equal distribution of fuel such as CNG on both the first port and the second port.
[0048] With the equal distribution of fuel, the mixing of fuel and air inside the cylinder is improved.
[0049] Lastly, as the mixing is improved, the efficiency of combustion is improved.
[0050] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation, no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to disclosures containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. Also, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general, such construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances, where a convention analogous to “at least one of A, B, or C, etc.” is used, in general, such construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”
[0051] It will be further appreciated that functions or structures of a plurality of components or steps may be combined into a single component or step, or the functions or structures of one-step or component may be split among plural steps or components. The present disclosure contemplates all of these combinations. Unless stated otherwise, dimensions and geometries of the various structures depicted herein are not intended to be restrictive of the disclosure, and other dimensions or geometries are possible. Also, while a feature of the present disclosure may have been described in the context of only one of the illustrated embodiments, such feature may be combined with one or more other features of other embodiments, for any given application. It will also be appreciated from the above that the fabrication of the unique structures herein and the operation thereof also constitute methods in accordance with the present disclosure. The present disclosure also encompasses intermediate and end products resulting from the practice of the methods herein. The use of “comprising” or “including” also contemplates embodiments that “consist essentially of” or “consist of” the recited feature. , Claims: We claim:
1. An intake manifold (101) connected to a cylinder (104) of an internal combustion engine for equally distributing airflow, the intake manifold (101) comprises:
a deflector (200) surrounding a fuel injector pocket (105) and having a first side (201), a second side (202) and a third side (203),
wherein the first side (201) is elongated towards the right side of the deflector (200),
wherein the second side (202) is curved from a top end (307) to a bottom end (303) to match a profile A of the intake manifold (101),
wherein the third side (203) is curved towards a top end (305) and gradually moves inwards towards a bottom end (306) of the third side (203) and away from profile B of the intake manifold (101).

2. The intake manifold (101) as claimed in claim 1, wherein a curved profile plane (304) is provided to connect a second end (301) of the first side (201) to the bottom end (303) of the second side (202).

3. The intake manifold (101) as claimed in claim 1, wherein a passage (204) is provided between the curved profile plane (304) and the third side (203) of the deflector (200),

4. The intake manifold (101) as claimed in claim 3, wherein the passage (204) is configured to allow a reverse flow of fuel and air mixture during overlap region.

5. The intake manifold (101) as claimed in claim 1, wherein the cross-section area of the third side (203) of the deflector (200) increases from the top end (305) to the bottom end (306) of the third side (203).

6. The intake manifold (101) as claimed in claim 1, wherein the first side (201) of the intake manifold (101) is perpendicular to the second side (202) and the third side (203) of the deflector (200).

7. The intake manifold (101) as claimed in claim 1, wherein the second side (202) and the third side (203) of the deflector (200) are parallel to each other.