Engine assembly of vehicle and vehicle

Abstract

The utility model discloses an engine assembly of a vehicle and the vehicle, the engine assembly comprises a cylinder cover and a cam bearing cover, the cylinder cover is connected with the cam bearing cover, and an oil pool communicated with a cylinder body of the engine assembly is formed in the cylinder cover; the oil-gas separation part is arranged on the cam bearing cover, the oil-gas separation part is provided with a first gas inlet, a first gas outlet and a first oil outlet, the first gas inlet is communicated with a timing cavity of the engine assembly, the first oil outlet is communicated with the oil pool, and the first gas outlet is communicated with the oil pool. And the first air outlet is communicated with the outside of the engine assembly. According to the engine assembly of the vehicle, the engine assembly improves the oil-gas separation efficiency by changing the gas taking position of the oil-gas separation piece.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and particularly to an engine assembly of a vehicle and a vehicle. Background Art

[0002] In the related art, the oil-gas separator assembly is the most important part in the crankcase ventilation system. The existing oil-gas separator is installed on the cam bearing cover. After the oil-gas separator takes air from the cylinder head oil sump, the crankcase blow-by gas is separated by the oil-gas separator. The separated oil is discharged back into the cylinder head oil sump through the oil return hole, and the remaining crankcase blow-by gas enters the supercharger through the air outlet for circulation, thereby completing the oil-gas separation. However, since a camshaft is also provided above the cylinder head, the rotation of the camshaft will drive the oil in the oil sump to generate an oil stirring phenomenon, resulting in a large amount of original oil carried in the gas, which is not conducive to oil-gas separation. Summary of the Utility Model

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the present application is to provide an engine assembly of a vehicle, which improves the oil-gas separation efficiency by changing the air intake position of the oil-gas separation component.

[0004] The present application also provides a vehicle having the above-mentioned engine assembly.

[0005] The engine assembly of a vehicle according to an embodiment of the present application includes: a cylinder head and a cam bearing cover, the cylinder head is connected to the cam bearing cover and an oil sump communicating with the cylinder block of the engine assembly is formed inside; an oil-gas separation component, the oil-gas separation component is arranged on the cam bearing cover, and the oil-gas separation component has a first air inlet, a first air outlet and a first oil outlet, the first air inlet communicates with the timing chamber of the engine assembly, the first oil outlet communicates with the oil sump, and the first air outlet communicates with the outside of the engine assembly.

[0006] For the engine assembly of a vehicle according to an embodiment of the present application, the engine assembly is provided with an oil-gas separation component, the oil-gas separation component has a first air inlet and a first oil outlet. The first air inlet can communicate with the timing chamber of the engine assembly, and the first oil outlet can communicate with the oil sump, so as to perform oil-gas separation on the oil-gas mixture in the timing chamber and transport the separated oil to the oil sump to complete lubrication. Compared with the prior art, the oil content in the gas in the timing chamber is much less than that in the gas in the oil sump, reducing the original oil carry-over amount, so that the oil-gas separation component can perform oil-gas separation on the gas carrying oil, and improving the separation efficiency of the oil-gas separation component.

[0007] In some embodiments of the present application, a ventilation passage and a second air inlet are formed on the cam bearing cover. The ventilation passage communicates between the first air inlet and the second air inlet, and the second air inlet opens towards the timing cavity.

[0008] In some embodiments of the present application, in a direction perpendicular to the extending direction of the ventilation passage, the cross-sectional area of the second air inlet is S and satisfies: 1000mm 2 ≤ S ≤ 1500mm 2 .

[0009] In some embodiments of the present application, a first oil baffle extending towards the timing cavity is formed on the cam bearing cover. A timing chain is arranged in the timing cavity, and the first oil baffle is located between the timing chain and the second air inlet.

[0010] In some embodiments of the present application, a second oil baffle is further arranged on a part of the inner wall of the ventilation passage. The second oil baffle extends in a direction perpendicular to the extending direction of the ventilation passage, and a communication hole is formed by spacing the free end of the second oil baffle from another part of the inner wall of the ventilation passage; wherein the second oil baffle is adapted to divide the ventilation passage into an air inlet passage and an oil return passage, the air inlet passage and the oil return passage are communicated through the communication hole, and the air inlet passage is communicated with the first air inlet.

[0011] In some embodiments of the present application, a first oil return hole communicating the oil return passage with the oil sump is formed on the cam bearing cover.

[0012] In some embodiments of the present application, an oil return cavity is formed on the cam bearing cover; the oil-gas separation member has a first separation part, the inlet of the first separation part is communicated with the first air inlet, the first separation part has a second air outlet and a second oil outlet, and the second oil outlet is communicated with the oil return cavity.

[0013] In some embodiments of the present application, the oil-gas separation member further has a second separation part, the inlet of the second separation part is communicated with the second air outlet, the outlet of the second separation part is communicated with the first air outlet and the first oil outlet, and the first oil outlet is communicated with the oil return cavity.

[0014] In some embodiments of the present application, a second oil return hole communicating the oil return cavity with the oil sump is formed on the cam bearing cover.

[0015] The vehicle according to the embodiments of the present application will be briefly described below.

[0016] The vehicle according to the embodiment of the present application is provided with the engine assembly of the above embodiment. Since the vehicle according to the embodiment of the present application is provided with the engine assembly of the above embodiment, therefore, the engine assembly of the vehicle is provided with an oil-gas separator. The oil-gas separator can separate the oil-gas mixture in the timing cavity and convey the separated engine oil to the oil sump to complete lubrication. Compared with the prior art, the engine oil content in the gas in the timing cavity is much less than that in the gas in the oil sump, reducing the original engine oil carry-over amount, facilitating the oil-gas separation of the gas carrying engine oil by the oil-gas separator, improving the separation efficiency of the oil-gas separator, and enhancing the performance of the vehicle.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a cross-sectional schematic view of an engine assembly according to an embodiment of the present application;

[0020] Figure 2 is Figure 1 a cross-sectional schematic view taken along line A-A in;

[0021] Figure 3 is Figure 1 a cross-sectional schematic view taken along line B-B in.

[0022] REFERENCE SIGNS:

[0023] 10, engine assembly;

[0024] 11, cam bearing cover; 111, ventilation passage; 1111, intake passage; 1112, oil return passage;

[0025] 112, second intake port; 113, first oil baffle; 114, second oil baffle; 115, communication hole;

[0026] 116, first oil return hole; 117, oil return cavity;

[0027] 12, oil-gas separator; 121, first intake port; 122, first outlet port; 123, first oil outlet;

[0028] 124, first separation part; 125, second separation part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0030] Reference will be made below Figures 1 - 3 to describe an engine assembly 10 of a vehicle according to an embodiment of the present application. The engine assembly 10 includes a cylinder head, a cam bearing cover 11, and an oil-gas separator 12. The cylinder head is connected to the cam bearing cover 11 and an oil sump communicating with the cylinder block of the engine assembly 10 is formed inside. The oil-gas separator 12 is disposed on the cam bearing cover 11, and the oil-gas separator 12 has a first air inlet 121, a first air outlet 122, and a first oil outlet 123. The first air inlet 121 communicates with the timing chamber of the engine assembly 10, the first oil outlet 123 communicates with the oil sump, and the first air outlet 122 communicates with the outside of the engine assembly 10.

[0031] Currently, the oil-gas separator is installed on the cam bearing cover. After the oil-gas separator takes air from the cylinder head oil sump, the crankcase blow-by gas is separated by the oil-gas separator. The separated oil is discharged back into the cylinder head oil sump through the oil return hole, and the remaining crankcase blow-by gas enters the supercharger through the air outlet for circulation, thereby completing the oil-gas separation. However, since a camshaft is also provided above the cylinder head, the camshaft will drive the oil in the oil sump when rotating, resulting in an oil stirring phenomenon, which increases the original oil content in the gas and is not conducive to oil-gas separation.

[0032] As Figure 1 shown, specifically, the engine assembly 10 may include a cylinder head and a cam bearing cover 11. The cylinder head may be disposed above the cylinder block, and the cylinder head and the cam bearing cover 11 may be connected by bolts. A closed chamber may be formed between the cylinder head and the cam bearing cover 11 for installing the camshaft of the engine assembly 10. An oil sump may also be formed between the cylinder head and the cam bearing cover 11. The oil sump may be used for storing engine oil, and the oil sump can communicate with the cylinder block for lubrication and heat dissipation. The camshaft may be partially or entirely located in the oil sump. When the camshaft rotates, it can carry part of the engine oil, increasing the oil content in the gas in the chamber and ensuring the lubrication of the camshaft at the same time.

[0033] The oil-gas separator 12 can be arranged on the cam bearing cover 11, and the oil-gas separator 12 can have a first air inlet 121, a first air outlet 122 and a first oil outlet 123. Further, the first air inlet 121 can communicate with the timing cavity of the engine assembly 10. It should be noted that the timing cavity can be located on the side of the cylinder block, and a timing chain can be arranged in the timing cavity. Compared with the oil sump, the amount of oil carried by the gas in the timing cavity is less, and it is easier to separate oil and gas. The first oil outlet 123 can communicate with the oil sump. It can be understood that the oil generated after the separation by the oil-gas separator 12 can flow back into the oil sump to realize the circulating flow of the oil. The first air outlet 122 can communicate with the outside of the engine assembly 10. The outside can refer to the outside of the housing of the engine assembly 10. The gas separated by the oil-gas separator 12 can be directly discharged to the outside, or the gas separated by the oil-gas separator 12 can be discharged to the supercharger for the circulating flow of the gas. Therefore, the oil at the oil pan of the engine assembly 10 can flow into the timing cavity to lubricate the timing chain. The oil-gas mixture in the timing cavity can be separated by the oil-gas separator 12. The separated oil can flow into the oil sump to lubricate the camshaft. The oil in the oil sump can also flow into the cylinder block to realize the functions of lubrication and heat dissipation, and finally flow back to the oil pan, so as to realize the circulating flow of the oil.

[0034] In short, the engine assembly 10 of the embodiment of the present application is provided with an oil-gas separator 12. The oil-gas separator 12 has a first air inlet 121 and a first oil outlet 123. The first air inlet 121 can communicate with the timing cavity of the engine assembly 10, and the first oil outlet 123 can communicate with the oil sump, so as to separate the oil-gas mixture in the timing cavity and transport the separated oil to the oil sump to complete lubrication. Compared with the prior art, the oil content in the gas in the timing cavity is much less than the oil content in the gas in the oil sump, reducing the original oil carry-over amount, so as to facilitate the oil-gas separator 12 to separate the oil-gas from the gas carrying oil, and improving the separation efficiency of the oil-gas separator 12.

[0035] Such as Figure 1As shown, in some embodiments of the present application, a ventilation passage 111 and a second air inlet 112 may be formed on the cam bearing cover 11. The ventilation passage 111 may communicate between the first air inlet 121 and the second air inlet 112, and the second air inlet 112 may open towards the timing chamber. It can be understood that the gas in the timing chamber can flow into the ventilation passage 111 through the second air inlet 112, and then flow from the ventilation passage 111 to the first air inlet 121, thereby separating oil and gas. It should be noted that the ventilation passage 111 and the second air inlet 112 may be part of the cam bearing cover 11. The existing oil and gas separation member 12 uses a separate pipeline or duct for air intake. Compared with the prior art, the present application directly provides a ventilation passage 111 and a second air inlet 112 on the cam bearing cover 11, reducing the complexity of the oil and gas separation member 12, realizing the integration between the oil and gas separation member 12 and the cam bearing cover 11, eliminating some pipelines, saving costs, and at the same time reducing the occupied space, so as to facilitate the arrangement of other parts.

[0036] As Figure 2 shown, in some embodiments of the present application, the cross-sectional area of the second air inlet 112 is S, satisfying the relationship: 1000mm 2 ≤S≤1500mm 2 , it should be noted that the cross-section of the second air inlet 112 may be a cross-section perpendicular to the extending direction of the ventilation passage 111, that is, the cross-sectional area of the second air inlet 112 may be any value between 1000mm 2 and 1500mm 2 . For example, the cross-sectional area of the second air inlet 112 may be, but is not limited to, 1000mm 2 , 1100mm 2 , 1200mm 2 , 1300mm 2 , 1400mm 2 , 1500mm 2 etc. Since the area of the cam bearing cover 11 is limited, if the cross-sectional area of the second air inlet 112 is too large, it will cause the timing chain to throw oil into the ventilation passage 111 during rotation and problems such as an increase in the oil carry-over amount. If the cross-sectional area of the second air inlet 112 is too small, it will lead to low oil and gas separation efficiency and is not conducive to the circulation of the oil. Therefore, setting the cross-sectional area of the second air inlet 112 within the above range can reduce the original oil carry-over amount, so as to facilitate the oil and gas separation member 12 to separate oil and gas from the gas carrying oil.

[0037] As Figure 2As shown, in some embodiments of the present application, a first oil baffle 113 may be formed on the cam bearing cover 11. The first oil baffle 113 may extend towards the timing chamber, and a timing chain may be provided in the timing chamber. The first oil baffle 113 may be located between the timing chain and the second air inlet 112. It can be understood that when the timing chain rotates clockwise, it will drive some crude oil, and the first oil baffle 113 can block the oil thrown out with the movement of the timing chain, thereby reducing the original oil carry-over amount.

[0038] As Figure 3 shown, in some embodiments of the present application, a second oil baffle 114 may also be provided on a part of the inner wall of the ventilation passage 111. The second oil baffle 114 may extend towards a direction perpendicular to the extension direction of the ventilation passage 111, and the free end of the second oil baffle 114 can be spaced from another part of the inner wall of the ventilation passage 111 to form a communication hole 115. It should be noted that the second oil baffle 114 can block the oil entering with the gas in the ventilation passage 111, so that the gas can directly enter the first air inlet 121, and the blocked oil can continue to flow through the communication hole 115.

[0039] Further, as Figure 1 shown, the second oil baffle 114 can divide the ventilation passage 111 into an intake passage 1111 and an oil return passage 1112. The intake passage 1111 can communicate with the oil return passage 1112 through the communication hole 115. The intake passage 1111 can communicate with the first air inlet 121 and the second air inlet 112. It can be understood that the gas in the timing chamber can flow to the intake passage 1111 through the second air inlet 112. Some of the oil carried by the gas flowing in the intake passage 1111 can be blocked by the second oil baffle 114, so that the oil flows downward, and the remaining gas can flow to the oil-gas separator 12 through the first air inlet 121 for oil-gas separation. A first oil return hole 116 may also be formed on the cam bearing cover 11. The first oil return hole 116 can connect the oil return passage 1112 with the oil sump, that is, the oil in the oil return passage 1112 can flow to the oil sump through the first oil return hole 116. Therefore, the oil blocked by the second oil baffle 114 can flow to the oil return passage 1112 through the communication hole 115, and then flow to the oil sump from the oil return passage 1112 through the first oil return hole 116.

[0040] As Figure 1As shown, in some embodiments of the present application, an oil return cavity 117 may be formed on the cam bearing cover 11, and a second oil return hole may be formed on the cam bearing cover 11. The second oil return hole can communicate the oil return cavity 117 with the oil sump, that is, the engine oil in the oil return cavity 117 can flow into the oil sump through the second oil return hole. The oil-gas separator 12 may have a first separation part 124. The first separation part 124 may be configured for rough separation, and the inlet of the first separation part 124 can communicate with the first air inlet 121. The first separation part 124 may have a second air outlet and a second oil outlet. The second oil outlet can communicate with the oil return cavity 117. The engine oil separated by the first separation part 124 can flow into the oil return cavity 117 through the second oil outlet, and then flow into the oil sump from the oil return cavity 117.

[0041] As Figure 1 shown, in some embodiments of the present application, the oil-gas separator 12 further has a second separation part 125. The second separation part 125 may be configured for fine separation and rough separation. The inlet of the second separation part 125 can communicate with the second air outlet. The gas separated by the first separation part 124 of the oil and gas can enter the second separation part 125 for further separation. The outlet of the second separation part 125 communicates with the first air outlet 122 and the first oil outlet 123. The gas and engine oil separated by the second separation part 125 can flow out through the first air outlet 122 and the first oil outlet 123 respectively. The gas can be directly discharged to the outside through the first air outlet 122, or discharged to the supercharger through the first air outlet 122 for the circulating flow of the gas. The engine oil separated by the second separation part 125 can flow into the oil return cavity 117 through the first oil outlet 123, and then flow into the oil sump from the oil return cavity 117, so as to realize the circulation of the engine oil.

[0042] The vehicle according to the embodiments of the present application will be briefly described below.

[0043] The vehicle according to the embodiments of the present application is provided with the engine assembly 10 of the above embodiments. Since the vehicle according to the embodiments of the present application is provided with the engine assembly 10 of the above embodiments, therefore, the engine assembly 10 of the vehicle is provided with an oil-gas separator 12. The oil-gas separator 12 can separate the oil-gas mixture in the timing cavity and convey the separated engine oil to the oil sump for lubrication. Compared with the prior art, the oil content in the gas in the timing cavity is much less than the oil content in the gas in the oil sump, reducing the original oil carry-over amount, facilitating the oil-gas separation of the gas carrying engine oil by the oil-gas separator 12, improving the separation efficiency of the oil-gas separator 12, and enhancing the performance of the vehicle.

[0044] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0045] In the description of the present application, the "first feature" and "second feature" may include one or more of such features.

[0046] In the description of the present application, the meaning of "a plurality of" is two or more.

[0047] In the description of the present application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0048] In the description of the present application, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0049] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0050] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An engine assembly for a vehicle, characterized in that: include: A cylinder head and a cam bearing cover (11), wherein the cylinder head is connected to the cam bearing cover (11) and has an oil pool formed therein which is in communication with a cylinder block of an engine assembly; An oil-gas separation component (12), the oil-gas separation component (12) being arranged on the cam bearing cover (11), and the oil-gas separation component (12) having a first air inlet (121), a first air outlet (122) and a first oil outlet (123), the first air inlet (121) being connected to a timing chamber of the engine assembly, the first oil outlet (123) being connected to the oil pool, and the first air outlet (122) being connected to the outside of the engine assembly.

2. The engine assembly of a vehicle according to claim 1, characterized in that: The cam bearing cover (11) is formed with a ventilation channel (111) and a second air intake port (112); the ventilation channel (111) is connected between the first air intake port (121) and the second air intake port (112); and the second air intake port (112) is open toward the timing chamber.

3. The engine assembly of a vehicle according to claim 2, characterized in that: In the extending direction perpendicular to the ventilation channel (111), the cross-sectional area of ​​the second air inlet (112) is S and satisfies: 1000 mm 2 ≤S≤1500mm 2 .

4. The engine assembly of a vehicle according to claim 2, characterized in that: The cam bearing cover (11) is formed with a first oil baffle (113) extending toward the timing chamber, a timing chain is arranged in the timing chamber, and the first oil baffle (113) is located between the timing chain and the second air inlet (112).

5. The vehicle engine assembly according to claim 2, characterized in that: A second oil baffle (114) is also provided on a portion of the inner wall of the ventilation channel (111), the second oil baffle (114) extends in a direction perpendicular to the extension direction of the ventilation channel (111), and a free end of the second oil baffle (114) is spaced apart from another portion of the inner wall of the ventilation channel (111) to form a communication hole (115); wherein The second oil baffle (114) is suitable for dividing the ventilation channel (111) into an air intake channel (1111) and an oil return channel (1112); the air intake channel (1111) is connected to the oil return channel (1112) via the connecting hole (115); and the air intake channel (1111) is connected to the first air inlet (121).

6. The engine assembly for a vehicle according to claim 5, characterized in that: The cam bearing cover (11) is formed with a first oil return hole (116) for connecting the oil return passage (1112) with the oil pool.

7. The engine assembly of a vehicle according to claim 1, characterized in that: An oil return chamber (117) is formed on the cam bearing cover (11); The oil-gas separation element (12) has a first separation portion (124), the inlet of the first separation portion (124) is connected to the first air inlet (121), the first separation portion (124) has a second air outlet and a second oil outlet, and the second oil outlet is connected to the oil return chamber (117).

8. The engine assembly of a vehicle according to claim 7, characterized in that: The oil-gas separation element (12) further comprises a second separation portion (125), the inlet of the second separation portion (125) being connected to the second air outlet, the outlet of the second separation portion (125) being connected to the first air outlet (122) and the first oil outlet (123), and the first oil outlet (123) being connected to the oil return chamber (117).

9. The engine assembly of a vehicle according to claim 8, characterized in that: The cam bearing cover (11) is formed with a second oil return hole which connects the oil return chamber (117) with the oil pool.

10. A vehicle, characterized in that: An engine assembly comprising a vehicle as claimed in any one of claims 1 to 9.

Images