CN217976401U

CN217976401U - Engine cylinder head cover and vehicle

Info

Publication number: CN217976401U
Application number: CN202222639383.XU
Authority: CN
Inventors: 谢曙光; 邱继虎; 葛峰; 张利焘; 马恩
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Liankong Technologies Co Ltd
Current assignee: Zhejiang Green Zhixing Science And Technology Innovation Co ltd; Zhejiang Geely Holding Group Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2022-12-06
Anticipated expiration: 2032-09-30

Abstract

The application provides an engine cylinder head cover and vehicle. The engine cylinder head cover comprises a cover body and a cover plate connected to the cover body. The cover plate is provided with an air inlet for fluid to flow in, a cavity is formed between the cover main body and the cover plate, the cover main body is provided with a transition air passage, the transition air passage divides the cavity into a first cavity and a second cavity, an oil-gas separation mechanism is arranged in the first cavity, and the area of a first air passage opening of the transition air passage communicated with the first cavity is smaller than the cross-sectional area of the first cavity in the direction perpendicular to the fluid flow. The application of the engine cylinder head cover can improve oil-gas separation efficiency.

Description

Engine cylinder head cover and vehicle

Technical Field

The application relates to the technical field of automobile engines, in particular to an engine cylinder head cover and a vehicle.

Background

The cylinder head cover of the engine has the function of sealing parts arranged on the cylinder head of the engine in the cylinder head cover, preventing external impurities from entering the engine and preventing oil gas in the engine from overflowing to pollute air.

The engine cylinder head cover is connected with the engine cylinder head through a sealing strip and a fastening bolt, so that the engine cylinder head cover can cover and seal the engine cylinder head, and oil gas is kept in the engine cavity. In addition, a part of high-temperature and high-pressure gas enters a crankcase through a gap between a piston ring and a cylinder during the operation of the engine, the high-temperature gas and splashed and evaporated small oil drops form mixed oil gas which enters a cylinder head cover of the engine together, and then the mixed oil gas reaches a combustion chamber through an intake manifold to participate in combustion.

At present, an oil-gas structure is usually arranged on the top surface of the engine cylinder head cover close to the exhaust port, so that oil drops in mixed oil gas are separated. However, the separation effect is not ideal, and many small oil drops still enter the combustion chamber through the intake manifold to be combusted, so that the environmental problems of high engine oil consumption, excessive particle emission and the like are caused.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide an engine cylinder head cover and vehicle, can improve oil-gas separation efficiency.

One aspect of the present application provides an engine cylinder head cover. The engine cylinder head cover comprises a cover body and a cover plate connected to the cover body, an air inlet used for flowing of fluid is formed in the cover plate, a cavity is formed between the cover body and the cover plate, the cover body is provided with a transition air passage, the transition air passage divides the cavity into a first cavity and a second cavity, an oil-gas separation mechanism is arranged in the first cavity, and the transition air passage is communicated with the area of a first air passage opening of the first cavity and is smaller than the cross-sectional area of the first cavity in the flow direction of the fluid perpendicular to the first cavity.

Further, the engine cylinder head cover also comprises an oil baffle assembly arranged in the second cavity, the oil baffle assembly comprises a second oil baffle, and the second oil baffle is positioned at a second air passage opening of the transition air passage communicated with the second cavity.

Further, the second oil deflector has an opening that faces the first air passage opening, and the size of the opening in the fluid flow direction gradually decreases.

Further, the second oil baffle is inclined downwards, and the lower end of the second oil baffle is farther away from the first air duct opening than the upper end of the second oil baffle.

Furthermore, the engine cylinder head cover further comprises an oil return pipe, the oil return pipe is arranged at the lowest point of the second cavity, and the lower end of the second oil baffle is opposite to the pipe orifice of the oil return pipe.

Further, keep off the oiled-plate set and still include seal installation department, seal installation department install in on the housing main part, in order to be used for with second cavity is sealed with the external world and is kept apart.

Further, the oil baffle assembly further comprises an air outlet pipeline, the air outlet pipeline is installed on the sealing installation portion, and the pipe orifice of the air outlet pipeline is right opposite to the bending portion of the second oil baffle, which is used for forming the opening.

Furthermore, the oil baffle assembly further comprises a connecting part, one end of the connecting part is fixed on the sealing installation part, and the other end of the connecting part is connected to one side edge of the second oil baffle.

Furthermore, the transition air passage is in a horn mouth shape, and the area of a second air passage opening communicated with the second cavity is larger than that of the first air passage opening.

The utility model provides an engine cylinder head cover separates into first cavity and second cavity through transition air flue with the cavity between head cover main part and the apron to, the first air flue mouth that will pass through the first cavity of intercommunication of air flue adopts the throat design for first cavity, thereby can increase the flow velocity of oil gas, increases the wall probability that hits of oil drop in the oil gas, and then can improve oil-gas separation efficiency.

And, the first cavity and the second cavity that set up in the engine cylinder head cover of this application by transition air flue separated can directly be made out through the casting, cavity simple structure.

Another aspect of the present application also provides a vehicle. The vehicle comprises an engine cylinder cover and the engine cylinder cover, wherein the engine cylinder cover is hermetically mounted on the engine cylinder cover.

Drawings

FIG. 1 is a schematic cross-sectional view of an engine cylinder head cover according to an embodiment of the present application;

FIG. 2 is a perspective view of a cover plate according to an embodiment of the present application;

fig. 3 is a schematic perspective view of an oil baffle assembly according to an embodiment of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front," "back," "lower," and/or "upper," and the like are for convenience of description, and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed after "comprises" or "comprising" is inclusive of the element or item listed after "comprising" or "comprises", and the equivalent thereof, and does not exclude additional elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The present application provides an engine head cover 100. Fig. 1 discloses a schematic cross-sectional view of an engine cylinder head cover 100 according to an embodiment of the present application. As shown in fig. 1, an engine cylinder head cover 100 according to an embodiment of the present application includes a cover main body 10 and a cover plate 20 attached to the cover main body 10.

Fig. 2 discloses a perspective view of the cover plate 20 according to an embodiment of the present application. As shown in fig. 2, the cover plate 20 is provided with an inlet 211 into which a fluid flows.

With continued reference to fig. 1, a cavity is formed between the cap body 10 and the cover plate 20. The cover body 10 has a transition air duct 13, and the transition air duct 13 divides the cavity into a first cavity 11 and a second cavity 12. The first cavity 11, the transition air duct 13 and the second cavity 12 are communicated with each other. Fluid may enter from the inlet 211 of the cover plate 20 and then flow through the first chamber 11, the transition duct 13, and the second chamber 12 in sequence. The transition air duct 13 has a first air duct port 131 communicating with the first chamber 11 and a second air duct port 132 communicating with the second chamber 12. Wherein, the area of the first air channel opening 131 of the transition air channel 13 is smaller than the cross-sectional area of the first cavity 11 in the direction perpendicular to the fluid flow direction D.

The utility model provides an engine cylinder head cover 100 separates into first cavity 11 and second cavity 12 through transition air flue 13 with the cavity between cover main part 10 and the apron 20 to, the first gas duct mouth 131 of the first cavity 11 of intercommunication that will pass through air flue 13 adopts the throat design for first cavity 11, thereby can increase the flow velocity of oil gas, increases the wall probability that hits of the oil droplet in the oil gas, and then can improve oil-gas separation efficiency.

In addition, the first cavity 11 and the second cavity 12 which are separated by the transition air passage 13 and are arranged in the engine cylinder head cover 100 of the application can be directly manufactured through casting, and the cavity structure is simple.

The volume of the second chamber 12 is smaller than the volume of the first chamber 11. The volume of the first chamber 11 is much larger than the volume of the second chamber 12, so that a certain flow rate of the air flow can be established.

An oil-gas separation mechanism is arranged in the first cavity 11. As shown in fig. 2, in some embodiments, the cover plate 20 includes a cover plate main body 21 and a plurality of first oil baffle plates 22 spaced apart from each other on the cover plate main body 21. The first oil baffle plates 22 provided on the cover plate 20 serve as an oil-gas separation mechanism in the first cavity 11. The cover plate main body 21 is in a flat plate shape, and a plurality of first oil baffle plates 22 respectively extend from the cover plate main body 21 vertically upwards at intervals. The air inlet 211 is opened at one end of the cover main body 21. The lid main body 21 is further provided with a plurality of oil return ports 212.

In some embodiments, the engine cylinder head cover 100 of the present application further includes an oil deflector assembly 30 disposed in the second cavity 12. FIG. 3 illustrates an isometric view of an oil deflector assembly 30 according to an embodiment of the present application. As shown in fig. 3, the oil deflector assembly 30 includes a second oil deflector positioned at the second air passage opening 132.

In some embodiments, the transition air passage 13 is in the shape of a bell mouth, and the area of the second air passage opening 132 of the transition air passage 13 is larger than the area of the first air passage opening 131. The transition air passage 13 adopts a bell mouth-shaped air passage, so that the flow speed of oil gas can be increased, and the probability of oil drops in the oil gas colliding with the wall can be increased; and on the other hand, the second oil baffle can be conveniently arranged.

The second oil baffle has an opening 310. The opening 310 faces the first gas port opening 131, and the size of the opening 310 in the fluid flow direction D gradually decreases. In some embodiments, the second oil deflector is a V-shaped oil deflector 31. Of course, the second oil deflector of the embodiment of the present application is not limited to the V-shaped oil deflector 31. In other embodiments, the second oil baffle of the embodiments of the present application may also adopt an arc-shaped oil baffle, a trapezoid oil baffle, or other similar oil baffle structures. A similar structure that can be realized with openings and with the size of the openings decreasing gradually in the fluid flow direction D is within the scope of the second baffle of the embodiments of the present application. The second oil deflector will be described below as an example of the V-shaped oil deflector 31.

The V-shaped oil deflector 31 is formed of a flat plate by bending, and for example, the V-shaped oil deflector 31 is formed of a circular plate by bending from the center. The V-shaped opening of the V-shaped oil deflector 31 faces the first air port opening 131. Thereby, on oil gas mixture through transition air flue 13 can strike V-arrangement oil baffle 31 to, adopt V-arrangement oil baffle 31, can make the oil that strikes on V-arrangement oil baffle 31 drop to gather in V-arrangement oil baffle 31's the department of bending, and then assemble into big oil and drip, improve oil baffle and collect the efficiency that drips, especially to the collection of oil drip.

In some embodiments, the V-shaped oil deflector 31 is inclined downward, and the lower end of the V-shaped oil deflector 31 is farther from the first gas port opening 131 than the upper end of the V-shaped oil deflector 31. The V-shaped oil baffle 31 is inclined downward, so that the collected oil drops are accelerated to flow below the second chamber 12 by the air blowing.

The engine cylinder head cover 100 of the present application further includes an oil return pipe 40, the oil return pipe 40 is disposed at the lowest point of the second cavity 12, and the lower end of the V-shaped oil baffle plate 31 is opposite to the pipe orifice of the oil return pipe 40. Therefore, the engine oil can be conveniently reflowed into the engine cavity.

The oil deflector assembly 30 further includes a seal mounting portion 32, and the seal mounting portion 32 is mounted on the cap body 10 for sealing the second cavity 12 from the outside. In the illustrated embodiment, the seal mounting portion 32 is annular in shape. A seal mount 32 is located at one end of the second chamber 12.

The oil deflector assembly 30 further includes an outlet conduit 33, the outlet conduit 33 being mounted to the seal mount 32, e.g., the outlet conduit 33 being mounted in a bore of the annular seal mount 32. And the pipe orifice of the air outlet pipeline 33 is over against the bending part of the V-shaped oil baffle plate 31.

In one embodiment, the oil deflector assembly 30 further includes a connecting portion 34, one end of the connecting portion 34 is fixed to the seal mounting portion 32, and the other end of the connecting portion 34 is connected to one side edge of the V-shaped oil deflector 31, thereby fixing the V-shaped oil deflector 31 to the seal mounting portion 32.

The oil baffle plate assembly 30 adopts the design of the V-shaped oil baffle plate 31, so that the oil drop collection efficiency can be improved, the number of the first oil baffle plates 22 in the first cavity 11 can be correspondingly reduced, and the structure of the first oil baffle plates 22 can be simpler.

When the engine runs, oil-gas mixture containing large and small engine oil droplets in the cavity of the engine enters the first cavity 11 from the air inlet 211 on the cover plate 20, when the oil-gas mixture passes through the first cavity 11, the oil-gas mixture is contacted with the wall surface of the first oil baffle 22 on the cover plate 20 in the first cavity 11, the large droplets are adsorbed on the cover plate main body 21 of the cover plate 20, and then the large droplets return to the engine through the oil return port 212 on the cover plate main body 21 in the first cavity 11; the unadsorbed oil drops are accelerated by a bell mouth-shaped transition air passage 13 between the first cavity 11 and the second cavity 12 and then collide with a V-shaped oil baffle plate 31 of an oil baffle plate assembly 30 in the second cavity 12 under the action of negative pressure in the air inlet manifold, and the oil drops gathered on the V-shaped oil baffle plate 31 are gathered at the folding angle of the V-shaped oil baffle plate 31 under the action of air and are gathered into large oil drops; the large oil drops are accelerated to the lowest point of the second cavity 12 under the action of gravity and the guiding of the inclined downward V-shaped oil baffle 31, then flow into the oil return pipe 40, then flow into the engine through the oil return pipe 40, and finally flow into the oil pan, and the separated clean gas enters the intake manifold through the air outlet pipe 33 of the oil baffle assembly 30.

The application of the engine cylinder head cover 100 can reduce particle emission, reduce oil consumption, further improve the separation efficiency of oil gas, can make the oil in the oil gas get back to the engine again instead of entering the combustion chamber for combustion, make the oil consumption still less, keep sufficient oil volume in the engine all the time, prolong the service life of the engine, and reduce user use cost simultaneously again. In addition, particulate matters generated by engine combustion are reduced, and the environment on which the engine lives is protected.

The present application further provides a vehicle. The vehicle includes an engine cylinder head (not shown) and an engine cylinder head cover 100 as described above. The engine head cover 100 is sealingly mounted to the engine cylinder head to seal components mounted to the engine cylinder head.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An engine cylinder head cover characterized in that: it includes the housing main part and connect in apron in the housing main part, offer the air inlet that is used for supplying the fluid to flow in on the apron the housing main part with be formed with the cavity between the apron, the housing main part has the transition air flue, the transition air flue will the cavity is separated for first cavity and second cavity, establish oil-gas separation mechanism in the first cavity, the transition air flue intercommunication the area of the first air flue mouth of first cavity is less than the cross sectional area of first cavity on the perpendicular to fluid flow direction.

2. The engine cylinder head cover of claim 1, wherein: the oil baffle assembly is arranged in the second cavity and comprises a second oil baffle which is positioned at a second air passage opening of the second cavity and communicated with the transition air passage.

3. The engine cylinder head cover of claim 2, wherein: the second oil baffle has an opening that faces the first gas passage opening, and the size of the opening in the fluid flow direction gradually decreases.

4. The engine cylinder head cover of claim 3, wherein: the second oil baffle is inclined downwards, and the lower end of the second oil baffle is farther away from the first air duct opening than the upper end of the second oil baffle.

5. The engine cylinder head cover of claim 4, wherein: the oil return pipe is arranged at the lowest point of the second cavity, and the lower end of the second oil baffle is opposite to the pipe orifice of the oil return pipe.

6. The engine cylinder head cover of claim 3, wherein: the oil baffle plate assembly further comprises a sealing installation part, and the sealing installation part is installed on the cover main body so as to be used for sealing and isolating the second cavity from the outside.

7. The engine cylinder head cover of claim 6, wherein: the oil baffle assembly further comprises an air outlet pipeline, the air outlet pipeline is installed on the sealing installation portion, and the pipe orifice of the air outlet pipeline is right opposite to the second oil baffle and used for forming the bending position of the opening.

8. The engine cylinder head cover of claim 6, wherein: the oil baffle plate assembly further comprises a connecting portion, one end of the connecting portion is fixed to the sealing installation portion, and the other end of the connecting portion is connected to one side edge of the second oil baffle plate.

9. The engine cylinder head cover of claim 1, wherein: the transition air passage is in a horn mouth shape, and the area of a second air passage opening communicated with the second cavity is larger than that of the first air passage opening.

10. A vehicle, characterized in that: comprising an engine cylinder head and an engine cylinder head cover according to any one of claims 1 to 9, which is sealingly mounted on the engine cylinder head.