Description:FORM 2

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

COMPLETE SPECIFICATION
(See Section 10 and Rule 13)

AN ENGINE ASSEMBLY FOR A VEHICLE AND A COOLING ASSEMBLY 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 an engine assembly. More particularly but not exclusively, the present subject matter relates to an engine assembly with a cooling assembly for a vehicle.

BACKGROUND
[0002] Generally, in the existing air-cooled engines, electric machines such as starter motor, dynamo, alternator and an Integrated Stator Generator (ISG) may be mounted on the crank case that generates a lot of thermal energy within the surrounding areas of the electric machines. Particularly, in some known engine assemblies, the ISG is mounted using a Cover magneto and crank case. The heat may be harmful for such electric machines. To address the same, a cooling assembly is provided on the outer face of the rotor assembly for circulating air which works for cooling of the engine parts and also some components like the electric machines. However, minimal amount of air usually goes towards components like starter or integrated starter generator.
[0003] Further, an engine oil circulation is critically inherent in the engine assembly to provide the appropriate lubrication to various moving parts of the engine assembly. In modern engines, more sophisticated forms of lubricants such as synthetic lubricants in addition to or in combination with conventional oils are used to cater to varying operating conditions of the engines and the vehicle. The lubricant fluid is passed to the cylinder head from the crank case thereby providing lubrication for various moving parts and also enabling dissipation of heat near the cylinder head area and piston region. The viscosity and lubricating capability of the lubricant changes with temperature. For appropriate lubrication, the fluid must not be too cold nor too hot. As modern engine assemblies become more and more compact, heating issues arise frequently especially when vehicle runs in hot temperatures and slow traffic. Heating issues can lead to serious damage to the engine assemblies leading inefficiencies in combustion or permanent damage to parts or complete seizure. Same is true for the electrical components as well.
[0004] Known cooling system focus on providing dedicated cooling systems using for example using coolants and fan assemblies. Such coolant systems require additional space, power, and materials for proper running thereto. These also enhance costs and difficulties in assembly and servicing. These also add to the weight to the engine assembly and consequently the vehicle thereby adversely affecting performance and fuel efficiency. These known solutions also require additional mounting means and space thereby requiring changes in vehicular architecture.
[0005] Therefore, there is a need to have an engine assembly with an efficient cooling system not just for the electrical components but also that is helpful in managing temperature of the lubricant without substantially altering vehicular architecture and adding weight while using existing components and using minimal alterations in existing engine assemblies.

BRIEF DESCRIPTION OF THE DRAWINGS
[0006] The details are described with reference to an embodiment of an engine assembly along with the accompanying figures. The same numbers are used throughout the drawings to reference similar features and components.
[0007] Figure 1 illustrates a perspective view of an engine assembly having a predefined passage in a vehicle in one embodiment of the invention.
[0008] Figure 2 illustrates a side view of the engine assembly of the vehicle in one embodiment of the invention.
[0009] Figure 3 illustrates an exploded view of the engine assembly along with a cooling assembly in the vehicle in one embodiment of the invention.
[00010] Figure 4 illustrates an exploded view of the cover member along with the cover plate and gasket in one embodiment of the invention.
[00011] Figure 5 illustrates a perspective view of a cover member of the engine assembly in the vehicle in one embodiment of the invention.
[00012] Figure 6a illustrates a cut sectional view of a fan mounted on the cover member of the ISG in the engine assembly in one embodiment of the invention. Figure 6b shows a cut section of the cover member in one embodiment of the invention.

DETAILED DESCRIPTION
[00013] To address the above-mentioned problems, an application for proposed invention discloses an engine assembly where the Integrated stator generator (hereinafter referred to as the ISG) is mounted on the cover magneto side. In the said invention, an engine oil is circulated through the cover magneto from the crank case in a pre-defined passage that extends into the cover magneto or the cover member for the ISG. This leads to an increased pathway of the engine oil and overall reduction of engine oil temperature. This comparatively cooler engine oil is then supplied to cylinder head and piston region of the engine assembly for cooling the combustion chamber and as a result leading to increase in engine performance and reduction in emission.
[00014] The Integrated stator generator (ISG) being mounted on the cover magneto and oil-flow in to the cover magneto with a dedicated oil flow path also leads to temperature drop in the cover magneto chamber. The engine oil takes an increased curve length over the cover magneto profile and then the engine oil flows in to the crank case from cover magneto outlet hole with reduced temperature and flashes oil into the piston and cylinder head regions. In another aspect, known engine assemblies already have forced air cooling systems using a fan and a shroud assembly. The fan can be axial or centrifugal while the shroud is configured to force air to critically heated parts of the engine assembly. In this aspect of the engine assembly, the cover member or the cover magneto with the predetermined passage for the lubricating fluid is configured to be exposed to the forced air from the fan. This leads to dual advantage whereby the air from the fan is used to not only cool the ISG chamber and therefore, the ISG but also the same air is used to cool the hot oil circulating in the passage provided on the cover magneto or the cover member of the ISG.
[00015] The performance and life of the electrical and mechanical components is thus enhanced without adding new parts or assemblies or a dedicated liquid cooling system like a coolant and fan assembly known in the art. The components of the chamber of ISG and other surrounding components can now be cooled in a more effective manner. This further leads to increase in durability since the components tends to be durable due to adequate oil cooling to dissipate heat from within the ISG and surrounding components.
[00016] Accordingly, as per one embodiment of the invention, an engine assembly for a vehicle is disclosed. The engine assembly comprises a crankcase which is configured to mount a crankshaft; a cover member which is mounted on the crankcase. The cover member is configured to enclose an electric machine. A predefined passage is provided on the cover member. The predefined passage is configured to enable a flow of a fluid on the cover member. The fluid is configured to flow and lubricate a plurality of components within the engine assembly.
[00017] As per one embodiment of the invention, in the engine assembly, the cover member is being configured to have a plurality of openings.
[00018] As per one embodiment of the invention, in the engine assembly, the cover member is mounted on the crankcase with the help of fastening means. The fastening means include bolts, screws, nuts.
[00019] As per one embodiment of the invention, in the engine assembly, the predefined passage is formed integrally with a surface of the cover member.
[00020] As per one embodiment of the invention, in the engine assembly, the cover member includes a first surface, a second surface and an annular surface. The annular surface extends circumferentially towards the first surface of the cover member. The electric machine is enclosed between the first surface of the cover member, the annular surface, and the crankcase.
[00021] As per one embodiment of the invention, in the engine assembly, the second surface of the cover member is being configured to include the predefined passage. The second surface of the cover member is being exposed to at least a portion of a cooling assembly. The cooling assembly is being configured to at least cool the fluid in the predefined passage.
[00022] As per one embodiment of the invention, in the engine assembly, the cooling assembly has a fan which is configured to force air towards the engine assembly to cool the plurality of components of the engine assembly.
[00023] As per one embodiment of the invention, in the engine assembly, the second surface of the cover member is partially covered by a cover plate. The cover plate is disposed between the cooling assembly and the cover member. The cover plate is configured to completely cover the predefined passage of the fluid.
[00024] As per one embodiment of the invention, in the engine assembly, a gasket is disposed between the cover member and the covering plate whereby the cover plate is capable of being capable of sealably fitted to the cover member using the gasket to prevent a spillage of the fluid from the cover member.
[00025] As per one embodiment of the invention, in the engine assembly, the predefined passage is configured as a tube. The tube is attached to the surface of the cover member.
[00026] As per one embodiment of the invention, in the engine assembly, the predefined passage of the fluid on the cover member is configured in a non-linear pattern across the surface of the cover member.
[00027] As per one embodiment of the invention, in the engine assembly, the predefined passage of the fluid on the cover member is configured in a spiral pattern on the surface of the cover member.
[00028] As per one embodiment of the invention, in the engine assembly, the predefined passage of the fluid on the cover member is configured in a radially extending sinusoidal pattern on the surface of the cover member.
[00029] As per one embodiment of the invention, in the engine assembly, the plurality of openings comprises a first opening configured to pass the fluid from the crankcase to the cover member; and a second opening configured to return the fluid after circulation from the cover member to the cylinder head.
[00030] As per one embodiment of the invention, in the engine assembly, the annular surface includes a plurality of first mounting means. The first mounting means is configured to receive the plurality of fastening means to attach the cover member to the cylinder head.
[00031] As per one embodiment of the invention, in the engine assembly, the second surface includes a plurality of second mounting means. The second mounting means is configured to receive a plurality of fastening means for attaching the cover plate and the gasket. to the second surface of the cover member.
[00032] As per one embodiment of the invention, in the engine assembly, the electric machine is an integrated starter generator and the cover member is a magneto chamber.
[00033] As per one embodiment of the invention, in the engine assembly, the fluid is a lubricating oil which is stored in a reservoir of the engine assembly. The lubricating oil is capable of being pumped to the plurality of the components of the engine assembly.
[00034] In yet another embodiment of the invention, a cooling assembly for an engine assembly of a vehicle is disclosed. The cooling assembly comprises a fan to force atmospheric air towards the engine assembly; a shroud to enclose the fan. The shroud is mounted on the engine assembly. The engine assembly includes a cover member to enclose an electric machine. A predefined passage is disposed on the cover member. The predefined passage is configured to enable a flow of a fluid on the cover member. The fluid is configured to flow and lubricate a plurality of components within the engine assembly.
[00035] In yet another embodiment of the invention, a vehicle is disclosed. The vehicle comprises a frame assembly for providing skeletal support to the vehicle and an engine assembly being supported on the frame assembly. The engine assembly comprises a crankcase being configured to mount a crankshaft; a cylinder block which is mounted on the crankcase; a cylinder head which is attached to the cylinder block; an electric machine which is operably connected to the crankshaft; a cover member which is mounted on the crankcase. The cover member is configured to enclose the electric machine and at least a predefined passage is disposed on the cover member. The predefined passage is configured to enable a flow of a fluid on the cover member. The fluid is configured to flow and lubricate a plurality of components within the engine assembly.
[00036] The embodiments of the present invention will now be described in detail with reference to an embodiment of an engine assembly having a cooling assembly along with the accompanying drawings. However, the disclosed invention is not limited to the present embodiments.
[00037] The embodiments shown in Figure 1 and Figure 2 illustrate a perspective and side view, respectively, of an engine assembly 200 for a vehicle (not shown). Figure 1 and Figure 2 have been taken together for discussion. The engine assembly 200 comprises a cylinder head 202, a block 203 and a crankcase 201. The crankcase 201 is configured to mount a crankshaft (not shown). A cover member 205 is being mounted on the crankcase 201. The cover member 205 is configured to enclose an electric machine 209. The electric machine 209 belongs to a group consisting of electrical components like integrated stator generator, batteries and controllers. A predefined passage P is disposed on the cover member 205. The predefined passage P is configured to enable a flow of a fluid on the cover member 205. The fluid can be a lubricating oil stored in a reservoir (not shown) of the engine assembly 200 which is configured to flow and at least lubricate a plurality of components within the engine assembly 200 by getting pumped into the engine assembly 200. The oil can be of known composition and grade as per the engine specification and can include synthetic and other types of oil. The arrows provided on Figure 1 tentatively show the path of the oil that flows from the crank case 201 to the cover member 205 through the predefined passage P and then towards the cylinder head 202 via the block 203 and the crankcase 201. In embodiment, the reservoir for the oil is not shown. The oil is pumped from the reservoir to one side of the crankcase 201 which in this case is the crankcase right hand side. From the right-hand side crankcase, the oil moves to the left-hand side crankcase 201 from where the oil moves into the cover member 205 as shown by arrows in Figure 1. From cylinder head 202 the lubricant then flows back to the reservoir via the block 203 and the crankcase 201 thereby completing the oil circulation path which is repeated along with engine cycles.
[00038] Figure 3, Figure 4 and Figure 5 have been taken together for discussion. Figure 3 illustrates an exploded view of the engine assembly 200 along with a cooling assembly 208 in the vehicle in one embodiment of the invention. Figure 4 illustrates an exploded view of the cover member 205 along with the cover plate 206 and the gasket 207 in one embodiment of the invention. Figure 5 illustrates a perspective view of the cover member 205 of the engine assembly 200 in one embodiment of the invention. The cover member 205 is being mounted on the crankcase 201 (shown in Fig. 1). In one aspect the cover member 205 is being mounted on a left-hand side of the crankcase 201 where the ISG is mounted. The cover member 205 includes a first surface 205f (shown in Figure 6a and 6b) that faces the crankcase 201. A second surface 205s of the cover member 205 faces away from crankcase 201. An annular surface 205a of the cover member 205 extends circumferentially around the periphery and extends towards the first surface 205f of the cover member 205. The electric machine 209 is enclosed between the first surface 205f of the cover member 205, the annular surface 205a of the cover member 205 and the crankcase 201. In one aspect of the invention the predefined passage P is formed integrally with the surface 205f, 205s, 205a of the cover member 205. Particularly, the predefined passage is integrally formed on the second surface 205s of the cover member 205. In another alternate embodiment, the predefined passage P can be configured as a tube or tubular structure that is attached to the second surface 205s of the cover member 205. The second surface 205s of the cover member 205 is exposed to at least a portion of the cooling assembly 208. The cooling assembly 208 is configured to at least cool the oil flowing in the predefined passage P. The cooling assembly 208 comprises a fan 208f (shown in Figure 3 and 6a) that forces atmospheric air towards the engine assembly 200. A shroud (not shown) is disposed to enclose the fan and is configured to define a path of the air forced by the fan. The shroud is configured to be mounted on the engine assembly 200. The second surface 205s of the cover member 205 is partially covered by a cover plate 206 which is disposed between the cooling assembly 208 and the cover member 205. The cover plate 206 is configured to completely cover the predefined passage P of the fluid. A gasket 207 is disposed between the cover member 205 and the cover plate 206. The cover plate 206 is capable of being sealably fitted to the cover member 205 with the help of the gasket 207 that prevents a spillage of the fluid from the cover member 205. The cover member 205 is configured to have a plurality of openings 210IN, 210OUT which comprises a first opening 210IN to pass the fluid from the crankcase 201 to the cover member 205 and a second opening 210OUT that is configured to return the fluid after circulation from the cover member 205 to cylinder head 202 (shown in Fig. 1). The plurality of openings 210IN, 210OUT pass through the annular surface 205a to connect the oil-path on the crankcase 201 to the predefined passage P. From the second opening 210OUT the oil flows from the cover member 205 towards the crankcase 210 and then to the cylinder head 202 (shown in Figure 1 and 2). The predefined passage P of the fluid on the cover member 205 is configured in various patterns across the surface 205f, 205s, 205a of the cover member 205. The patterns can be a non-linear pattern, a spiral pattern, a radially extending sinusoidal pattern. The idea is to maximize the surface area of exposure for the oil flowing in the predefined passage P which enhances cooling of the oil. The annular surface 205a of the cover member 205 includes a plurality of first mounting means 205afm which are configured to receive the plurality of fastening means (not shown) to attach the cover member 205 to the crankcase 201. Also, the second surface 205s of the cover member 205 includes a plurality of second mounting means 205sfm. The second mounting means 205sfm are configured in this embodiment to receive the plurality of fastening means 200f for attaching the cover plate 206 and the gasket 207 to the cover member 205.
[00039] Figure 6a and Figure 6b illustrate a side cut sectional views a cut sectional view of a fan mounted on the cover member of the ISG 209 in the engine assembly 200 in one embodiment of the invention. Figure 6b shows a cut section of the cover member in one embodiment of the invention. The first surface 205f of the cover member 205 faces the crankcase 201. In one aspect of the invention, the cover member 205 is the cover magneto which encloses ISG 209. The ISG 209 is installed within the ISG chamber which is covered by the cover member 205. The ISG 209 has the first surface 205f of the cover member 205 on the one side and the crankcase 201 on the other side. In one aspect of the invention the ISG 209 is operatively coupled to the fan 208F. In another aspect of the invention an axis of rotation of the ISG 209 is co-axial with an axis of rotation of the fan 208f. The fan 208f can also be rotated through other type of operative coupling such as belts and chains that are known in the art. The fan 208f is configured to provide forced air cooling to the engine assembly 200. The fan 208f can be any conventionally known fan which used in forced air-cooling system for engines. The fan 208f in another aspect of the invention is enclosed in a shroud (not shown) which is configured to direct the forced to various components of the engine assembly 200. In this embodiment of the invention an amount of the forced air is directed to be thrown on the cover member 205, particularly on the predefined passage P where the oil flows in the predefined extended path. The cooling system 208 therefore contributes towards cooling of the mechanical components of the engine but the electrical components such as the ISG 209 and the oil flowing in the predefined passage 209. The ISG 209 rotatably installed in the cover member 205 such that its shaft passes through a shaft opening 205op provided in the cover 205. The shaft of the ISG 209 is operatively coupled to the crankshaft (not shown) of the engine assembly 200.
[00040] Therefore, in view of the above disclosure and the various embodiments, the improved engine assembly 200 is provided with a cooling assembly 208 whereby efficient cooling of the mechanical components, electrical components and of the oil being circulated in the engine assembly 200 is achieved. The disclosed invention, therefore, provides advantages of air cooled as well as liquid cooled system for the engine assembly 200 without substantially increasing the weight of the assembly, the number of parts and complexity. The benefits are further amplified due to the predetermined profile and shape of the predefined passage P which enhances the surface area of exposure for the oil flowing in the predefined passage P. The configuration can be achieved without altering the vehicular architecture and therefore is cost effective. The engine assembly 200 with the cooling assembly 208 is also easy to assemble and access for servicing without requiring removal of excessive number of parts other than what is conventionally known for such configurations.
[00041] The embodiments of this invention are not limited to particularly any type of vehicle and engine and can cover any type of vehicle involving the engine assembly 200 along with the cooling assembly 208. 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.
[00042] 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.
[00043] 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:

200 Engine assembly
200f Fastening means
201 Crankcase
202 Cylinder head
203 Cylinder block
205 Cover member
205f First surface of cover member
205s Second surface of cover member
205sfm Plurality of second mounting means
205a Annular surface of cover member
205afm
205op Plurality of first mounting means
Shaft opening
206 Cover plate
207 Gasket
208
209 Cooling assembly
Electric machine/ISG
208f Fan
210IN, 210OUT Plurality of openings
210IN First opening
210OUT Second opening
P
Predefined passage



, C , Claims:We Claim:

1. An engine assembly (200) for a vehicle, the engine assembly (200) comprising:
a crankcase (201), the crankcase (201) being configured to mount a crankshaft;
a cover member (205), the cover member (205) being mounted on the crankcase (201);
wherein
the cover member (205) being configured to enclose an electric machine (209); and
at least a predefined passage (P) being disposed on the cover member (205), the predefined passage (P) being configured to enable a flow of a fluid on the cover member (205), the fluid being configured to flow and at least lubricate a plurality of components within the engine assembly (200).
2. The engine assembly (200) as claimed in claim 1, wherein the cover member (205) being configured to have a plurality of openings (210IN, 210OUT).
3. The engine assembly (200) as claimed in claim 1, wherein the cover member (205) being mounted on the crankcase (201) with the help of a plurality of fastening means, and the fastening means including bolts, screws, nuts.
4. The engine assembly (200) as claimed in claim 1, wherein the predefined passage (P) being formed integrally with a surface (205f, 205s, 205a) of the cover member (205).
5. The engine assembly (200) as claimed in claim 1, wherein
the cover member (205) includes a first surface (205f), a second surface (205s), and an annular surface (205a) extending circumferentially towards the first surface (205f) of the cover member (205); and
the electric machine (209) being enclosed between the first surface (205f) of the cover member (205), the annular surface (205a), and the crankcase (201).
6. The engine assembly (200) as claimed in claim 5, wherein
the second surface (205s) of the cover member (205) being configured to include the predefined passage (P);
the second surface (205s) of the cover member (205) being exposed to at least a portion of a cooling assembly (208), the cooling assembly (208) being configured to at least cool the fluid in the predefined passage (P).
7. The engine assembly (200) as claimed in claim 6, wherein the cooling assembly (208) has a fan (208f), the fan (208f) being configured to force air towards the engine assembly (200) to cool the plurality of components of the engine assembly (200).
8. The engine assembly (200) as claimed in claim 7, wherein the second surface (205s) of the cover member (205) being at least partially covered by a cover plate (206), the cover plate (206) being disposed between the fan (208f) and the cover member (205), and the cover plate (206) being configured to completely cover the predefined passage (P) of the fluid.
9. The engine assembly (200) as claimed in claim 8, wherein a gasket (207) being disposed between the cover member (205) and the cover plate (206) whereby the cover plate (206) being capable of sealably fitted to the cover member (205) using the gasket (207) to prevent a spillage of the fluid from the cover member (205).
10. The engine assembly (200) as claimed in claim 1, wherein the predefined passage (P) being configured as a tube, the tube being attached to the surface (205f, 205s, 205a) of the cover member (205).
11. The engine assembly (200) as claimed in claim 1, wherein the predefined passage (P) for the fluid being configured in a non-linear pattern across the surface (205f, 205s, 205a) of the cover member (205).
12. The engine assembly (200) as claimed in claim 1, wherein the predefined passage (P) for the fluid being configured in a spiral pattern on the surface (205f, 205s, 205a) of the cover member (205).
13. The engine assembly (200) as claimed in claim 1, wherein the predefined passage (P) for the fluid being configured in a radially extending sinusoidal pattern on the surface (205f, 205s, 205a) of the cover member (205).
14. The engine assembly (200) as claimed in claim 2, wherein the plurality of openings (210IN, 210OUT) comprising:
a first opening (210IN), the first opening (210IN) being configured to pass the fluid from the crankcase (201) to the cover member (205); and
a second opening (210OUT), the second opening (210OUT) being configured to return the fluid after circulation from the cover member (205) to cylinder head (202).
15. The engine assembly (200) as claimed in claim 5, wherein the annular surface (205a) including a plurality of first mounting means (205afm), the first mounting means (205afm) being configured to receive a plurality of fastening means to attach the cover member (205) to the crankcase (201).
16. The engine assembly (200) as claimed in claim 9, wherein the second surface (205s) includes a plurality of second mounting means (205sfm), the second mounting means (205sfm) configured to receive a plurality of fastening means for attaching the cover plate (206) and the gasket (207) to the second surface (205s) of the cover member (205).
17. The engine assembly (200) as claimed in claim 1, wherein the electric machine (209) being an integrated stator generator and the cover member (205) being a magneto chamber.
18. The engine assembly (200) as claimed in claim 1, wherein the fluid being a lubricating oil, the lubricating oil being stored in a reservoir of the engine assembly (200) and the lubricating oil being capable of being pumped to the plurality of the components of the engine assembly (200).
19. A cooling assembly (208) for an engine assembly (200), the cooling assembly (208) comprising:
a fan (208f), the fan (208f) being configured to force atmospheric air towards the engine assembly (200); and
a shroud, the shroud being configured to enclose the fan (208f) and the shroud being configured to be mounted on the engine assembly (200) wherein the engine assembly (200) includes:
a cover member (205), the cover member (205) being configured to enclose an electric machine (209); and
at least a predefined passage (P) being disposed on the cover member (205), the predefined passage (P) being configured to enable a flow of a fluid on the cover member (205), the fluid being configured to flow and at least lubricate a plurality of components within the engine assembly (200).
20. A vehicle comprising:
a frame assembly for providing skeletal support to the vehicle;
an engine assembly (200), the engine assembly (200) being supported on the frame assembly and the engine assembly (200) comprising:
a crankcase (201), the crankcase (201) being configured to mount a crankshaft;
a cylinder block (203), the cylinder block (203) being mounted on the crankcase (201);
a cylinder head (202), the cylinder head (202) being attached to the cylinder block (203);
an electric machine (209), the electric machine (209) being operably connected to the crankshaft;
a cover member (205), the cover member (205) being mounted on the crankcase (201);
wherein
the cover member (205) being configured to enclose the electric machine (209); and
at least a predefined passage (P) being disposed on the cover member (205), the predefined passage (P) being configured to enable a flow of a fluid on the cover member (205), the fluid being configured to flow and at least lubricate a plurality of components within the engine assembly (200).

Dated this the 21st day of March 2023

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