Valve chamber cover

Abstract

The valve chamber cover comprises a valve chamber cover body and a cover plate, the valve chamber cover body is provided with a working cavity, the working cavity is used for being matched with an engine cylinder block, the bottom of the working cavity is connected with a convex strip, the convex strip is annular, and the inner side of the convex strip is a containing cavity; the cover plate is connected to the end, away from the cavity bottom of the working cavity, of the protruding strip and covers a cavity opening of the containing cavity, and an air outlet channel is formed in the cavity wall of the containing cavity and used for being communicated with an air inlet manifold of an engine cylinder block. The protruding strip is annular, the containing cavity is formed in the inner side of the protruding strip, the cover plate is connected to the protruding strip and covers a cavity opening of the containing cavity, the containing cavity and the working cavity are separated, an air outlet channel is formed in the cavity wall of the containing cavity and communicates with an air inlet manifold of an engine cylinder block, external pipelines are arranged inside, and the space occupied by the valve chamber cover body is reduced. The valve chamber cover body and the engine cylinder block can be connected conveniently, and the integration level of the whole engine is improved.

Description

Technical Field

[0001] This application relates to the technical field of automotive parts, and particularly to a valve cover. Background Art

[0002] The engine valve cover is simply called the valve cover. The valve cover is a cover plate arranged above the valve chamber to protect the camshaft and form an approximately sealed cavity together with the cylinder block. When the engine is running, lubricating oil will not leak to the outside. The cylinder head corresponds to the cylinder block, and corresponding valves are installed on the cylinder head, and together with the cylinder block assembly, it forms a sealed compression chamber, and under specific conditions, the combustible mixture burns inside it.

[0003] During the operation of the engine, there is gasoline vapor. At present, a receiving cavity is provided at the upper end of the valve cover for receiving gasoline vapor. A connecting pipe is provided outside the valve cover, and the gasoline vapor embedded in the receiving cavity is transported to the intake manifold through an external pipe for full combustion. However, the external pipe increases the overall structural size of the valve cover, occupies a large space, and is not conducive to the installation of the valve cover and the integrated design of the entire engine. Utility Model Content

[0004] In order to reduce the space occupied by the valve cover and facilitate the installation of the valve cover, this application provides a valve cover.

[0005] A valve cover provided by this application adopts the following technical solution:

[0006] A valve cover includes a valve cover body and a cover plate. The valve cover body is provided with a working cavity for cooperating with the engine cylinder block. A rib is connected to the bottom of the working cavity. The rib is annular. The inner side of the rib is a receiving cavity. The cover plate is connected to the end of the rib away from the bottom of the working cavity and covers the opening of the receiving cavity. An air outlet channel is provided at the wall of the receiving cavity for communicating with the intake manifold of the engine cylinder block.

[0007] By adopting the above technical solution, the rib is annular, the inner side of the rib is a receiving cavity, the cover plate is connected to the rib and covers the opening of the receiving cavity, realizing the separation of the receiving cavity and the working cavity. An air outlet channel is provided at the wall of the receiving cavity, and the air outlet channel is communicated with the intake manifold of the engine cylinder block, realizing the internalization of the external pipe, which helps to reduce the space occupied by the valve cover body, facilitate the connection between the valve cover body and the engine cylinder block, and improve the overall integration level of the engine.

[0008] Preferably, the valve cover body is provided with an air intake channel communicated with the receiving cavity. The end of the air intake channel away from the receiving cavity is communicated with the exhaust hole of the engine cylinder block. A communication hole is provided at the wall of the receiving cavity for communicating the receiving cavity and the working cavity.

[0009] By adopting the above technical solution, the exhaust gas generated during the operation of the engine directly enters the accommodation cavity through the intake passage, reducing the possibility of exhaust gas residue affecting the next combustion in the working cavity. The connecting hole communicates the working cavity and the accommodation cavity, facilitating the gasoline vapor in the working cavity to enter the accommodation cavity and then enter the intake manifold through the air outlet passage for sufficient combustion, thereby improving the fuel utilization rate of the engine.

[0010] Preferably, a plurality of air outlet passages are provided, and the plurality of air outlet passages are spaced along the length direction of the cover plate.

[0011] By adopting the above technical solution, a plurality of air outlet passages are provided so that when one or more air outlet passages are blocked, the gasoline vapor in the accommodation cavity can enter the intake manifold through the remaining air outlet passages, improving the reliability of the valve cover body.

[0012] Preferably, a plurality of connecting seats are connected to the outer periphery of the valve cover body, and the plurality of connecting seats are spaced along the circumferential direction of the valve cover body. The connecting seats are provided with outer connecting holes for bolts to pass through and be threadedly connected to the engine block. The valve cover body is provided with ignition holes for the ignition device to be embedded, and the valve cover body is provided with inner connecting holes for bolts to pass through and be threadedly connected to the engine block.

[0013] By adopting the above technical solution, ignition holes are provided for the ignition device to be embedded to realize ignition of the engine, and a plurality of outer connecting holes and inner connecting holes are provided for bolts to pass through and be threadedly connected to the engine block, which helps to improve the connection stability between the valve cover body and the engine block.

[0014] Preferably, a first sealing ring is further included. There is an outer sealing groove on the side of the valve cover body close to the engine block, and the outer sealing groove surrounds the orifice of the working cavity and the air outlet passage. The first sealing ring is embedded in the outer sealing groove.

[0015] By adopting the above technical solution, the first sealing ring is embedded in the outer sealing groove, reducing the possibility of gasoline vapor in the valve chamber leaking from the connection between the valve cover body and the engine block, and improving the sealing performance between the valve cover body and the engine block.

[0016] Preferably, a second sealing ring is further included. There is an inner sealing groove on the side of the valve cover body close to the engine block, and the inner sealing groove surrounds the ignition hole. The second sealing ring is embedded in the inner sealing groove.

[0017] By adopting the above technical solution, the second sealing ring is embedded in the inner sealing groove, reducing the possibility of gasoline vapor in the valve chamber entering the ignition hole from the connection between the valve cover body and the engine block, improving the sealing performance between the valve cover body and the engine block, reducing the possibility of gasoline vapor damaging the ignition system, and increasing the service life of the engine components.

[0018] Preferably, a plurality of positioning seats are connected to the outer periphery of the cover plate. The plurality of positioning seats are spaced apart along the circumferential direction of the cover plate. The positioning seats are provided with positioning grooves. A positioning post is connected to the bottom of the working cavity. The number of the positioning posts is the same as and corresponds to the number of the positioning seats one by one. The positioning posts are embedded in the positioning grooves.

[0019] By adopting the above technical solution, the positioning posts are embedded in the corresponding positioning grooves, which is convenient for improving the installation accuracy of the cover plate and increasing the installation efficiency.

[0020] Preferably, a first reinforcing rib is connected to the side of the cover plate away from the accommodating cavity.

[0021] By adopting the above technical solution, the cover plate is connected with the first reinforcing rib, which helps to improve the anti-bending performance of the cover plate along the length direction of the first reinforcing rib, reduces the possibility that the pressure in the accommodating cavity is too high and squeezes the cover plate to cause damage to the cover plate, and increases the service life of the cover plate.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The convex strip is annular. The inner side of the convex strip is the accommodating cavity. The cover plate is connected to the convex strip and covers the opening of the accommodating cavity, realizing the separation of the accommodating cavity and the working cavity. An air outlet channel is provided at the wall of the accommodating cavity. The air outlet channel is connected to the intake manifold of the engine block, realizing the internal placement of the external pipeline, which helps to reduce the space occupied by the valve cover body, facilitates the connection between the valve cover body and the engine block, and improves the overall integration level of the engine;

[0024] 2. The exhaust gas generated during the operation of the engine directly enters the accommodating cavity through the intake channel, reducing the possibility of the residual exhaust gas affecting the next combustion in the working cavity. The connection hole connects the working cavity and the accommodating cavity, facilitating the gasoline vapor in the working cavity to enter the accommodating cavity and then enter the intake manifold through the air outlet channel for full combustion, improving the fuel utilization rate of the engine;

[0025] 3. A plurality of air outlet channels are provided so that when one or more air outlet channels are blocked, the gasoline vapor in the accommodating cavity can enter the intake manifold through the remaining air outlet channels, improving the reliability of the valve cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the valve cover.

[0027] Figure 2 It is a schematic structural diagram of another perspective of the valve cover.

[0028] Figure 3 It is a schematic diagram of a partial structure of the valve cover body.

[0029] Figure 4 It is a partial cross-sectional view of the valve cover, mainly showing the connecting plate.

[0030] Figure 5 It is a partial cross-sectional view of the valve cover, mainly showing the intake passage.

[0031] Explanation of reference numerals:

[0032] 1. Valve cover body; 11. Working cavity; 12. Rib; 13. Accommodating cavity; 131. Upper cavity; 132. Lower cavity; 14. Exhaust passage; 15. Intake passage; 16. Communication hole; 17. Connecting seat; 171. Outer connection hole; 18. Boss; 181. Ignition hole; 182. Inner connection hole; 183. Inner sealing groove; 19. Outer sealing groove; 110. Positioning post; 1101. Chamfer; 111. Connecting plate; 1111. Connection hole;

[0033] 2. Cover plate; 21. Positioning seat; 211. Positioning groove; 22. First reinforcing rib;

[0034] 3. First sealing ring;

[0035] 4. Second sealing ring. Specific implementation mode

[0036] The following further describes the present application in detail with reference to the accompanying drawings.

[0037] Refer to Figure 1 , an embodiment of the present application discloses a valve cover including a valve cover body 1. A working cavity 11 is provided on one side of the valve cover body 1 close to the engine block, and the working cavity 11 is used to cooperate with the engine block. A boss 18 is formed on the bottom of the working cavity 11 protruding towards the side close to the engine block. The surface of the boss 18 away from the bottom of the working cavity 11 is flush with the surface of the valve cover body 1 close to the engine block, and the length direction of the boss 18 is parallel to the length direction of the valve cover body 1. A plurality of ignition holes 181 are provided on the boss 18, and the ignition holes 181 penetrate through the valve cover body 1 along the thickness direction of the valve cover body 1. The plurality of ignition holes 181 are spaced apart along the length direction of the boss 18, and the ignition holes 181 are used for the ignition device to be embedded. In this embodiment, six ignition holes 181 are provided.

[0038] Refer to Figure 1 and Figure 2, the boss 18 is provided with a plurality of internal connection holes 182. The internal connection holes 182 penetrate through the valve cover body 1 along the thickness direction of the valve cover body 1. The internal connection holes 182 are used for bolts to pass through and be threadedly connected to the engine block. The plurality of internal connection holes 182 are spaced apart along the length direction of the boss 18. In this embodiment, there are six internal connection holes 182. A plurality of connection seats 17 are fixedly connected to the outer periphery of the valve cover body 1. The plurality of connection seats 17 are spaced apart along the circumferential direction of the valve cover body 1. In this embodiment, there are fifteen connection seats 17. The connection seat 17 is provided with an external connection hole 171, and the external connection hole 171 is used for bolts to pass through and be threadedly connected to the engine block.

[0039] Refer to Figure 1 , a valve cover further includes a second sealing ring 4. An inner sealing groove 183 is provided on the surface of the boss 18 close to the engine block. The inner sealing groove 183 is arranged along the circumferential direction of the boss 18 and surrounds the ignition hole 181. The second sealing ring 4 is embedded in the inner sealing groove 183.

[0040] Refer to Figure 3 and Figure 4 , a convex strip 12 is fixedly connected to the bottom of the working cavity 11. The convex strip 12 is annular. The inner side of the convex strip 12 is an accommodation cavity 13. A connecting plate 111 is fixedly connected to the cavity wall of the accommodation cavity 13 on the side away from the boss 18. The connecting plate 111 divides the accommodation cavity 13 into an upper cavity 131 and a lower cavity 132. The upper cavity 131 is located on the side of the connecting plate 111 away from the engine block. The connecting plate 111 is provided with a connection hole 1111, and the connection hole 1111 communicates the upper cavity 131 and the lower cavity 132. An air outlet channel 14 is provided on the cavity wall of the lower cavity 132 on the side away from the boss 18. The other end of the air outlet channel 14 is located on the surface of the valve cover body 1 close to the engine block. The air outlet channel 14 is used to communicate with the intake manifold of the engine block. There are a plurality of air outlet channels 14, and the plurality of air outlet channels 14 are spaced apart along the length direction of the valve cover body 1. In this embodiment, there are three air outlet channels 14.

[0041] Refer to Figure 1 , a valve cover further includes a first sealing ring 3. An outer sealing groove 19 is provided on the surface of the valve cover body 1 close to the engine block. The outer sealing groove 19 surrounds the cavity opening of the working cavity 11 and the air outlet channel 14. The first sealing ring 3 is embedded in the outer sealing groove 19.

[0042] Refer to Figure 3 and Figure 5, the boss 18 is provided with an intake passage 15. One end of the intake passage 15 is located on the side surface of the boss 18 close to the engine block. The intake passage 15 is communicated with the exhaust hole of the engine block, and the other end of the intake passage 15 is communicated with the upper cavity 131. A communication hole 16 is provided at the cavity wall on one side of the upper cavity 131 along the length direction of the valve cover body 1, and the communication hole 16 communicates the upper cavity 131 and the working cavity 11.

[0043] Referring to Figure 1 and Figure 4 , a valve cover further includes a cover plate 2. The cover plate 2 is connected to the valve cover body 1 and covers the cavity opening of the accommodating cavity 13. A plurality of first reinforcing ribs 22 are uniformly distributed on the side of the cover plate 2 away from the accommodating cavity 13. A positioning seat 21 is fixedly connected to the outer periphery of the cover plate 2, and the positioning seats 21 are spaced apart along the circumferential direction of the cover plate 2. In this embodiment, there are two positioning seats 21. One positioning seat 21 is located on the side of the cover plate 2 close to the boss 18, and this positioning seat 21 is located on the side of the cover plate 2 away from the communication hole 16. The other positioning seat 21 is located on the side of the cover plate 2 close to the connecting hole 1111 along the length direction of the cover plate 2. A positioning groove 211 is provided on the side of the positioning seat 21 away from the cover plate 2, and the positioning groove 211 penetrates through the positioning seat 21 along the thickness direction of the positioning seat 21. A positioning post 110 is provided at the bottom of the working cavity 11. The number of the positioning posts 110 is the same as that of the positioning seats 21 and they correspond one by one. The positioning seat 21 is located in the positioning groove 211. A chamfer 1101 is provided on the outer periphery of the end of the positioning seat 21 away from the bottom of the working cavity 11, and the chamfer 1101 is used for the wall of the positioning groove 211 to abut against.

[0044] The implementation principle of a valve cover in an embodiment of the present application is as follows: The positioning seat 21 is embedded in the positioning groove 211, so that the first sealing ring 3 is embedded in the outer sealing groove 19, and the second sealing ring 4 is embedded in the inner sealing groove 183. The valve cover body 1 is closed on the engine block. The outer connection hole 171 and the inner connection hole 182 of the valve cover body 1 correspond one by one to the fixing holes of the engine block. After the bolt passes through the outer connection hole 171 or the inner connection hole 182, it is threadedly connected to the engine block, realizing the fixed connection between the valve cover body 1 and the engine block.

[0045] The exhaust gas and gasoline vapor produced in the engine block respectively enter the upper cavity 131 through the intake passage 15 and the communication hole 16, enter the lower cavity 132 through the connecting hole 1111, and then respectively enter the intake manifold of the engine block through the respective outlet passages 14 for re-combustion.

[0046] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A valve cover, characterized in that: The invention comprises a valve cover body (1) and a cover plate (2); the valve cover body (1) is provided with a working chamber (11); the working chamber (11) is used to cooperate with an engine cylinder block; a convex strip (12) is connected to the bottom of the working chamber (11); the convex strip (12) is annular; the inner side of the convex strip (12) is a receiving chamber (13); the cover plate (2) is connected to an end of the convex strip (12) away from the bottom of the working chamber (11) and covers the opening of the receiving chamber (13); an air outlet channel (14) is provided at the wall of the receiving chamber (13); the air outlet channel (14) is used to communicate with an intake manifold of the engine cylinder block.

2. The valve cover according to claim 1, characterized in that: The valve cover body (1) is provided with an air intake passage (15); the air intake passage (15) is connected to the accommodating chamber (13); one end of the air intake passage (15) away from the accommodating chamber (13) is connected to an exhaust hole of an engine cylinder body; a connecting hole (16) is provided on the wall of the accommodating chamber (13); the connecting hole (16) connects the accommodating chamber (13) and the working chamber (11).

3. The valve cover according to claim 1, characterized in that: A plurality of the air outlet channels (14) are provided; the plurality of the air outlet channels (14) are distributed at intervals along the length direction of the cover plate (2).

4. The valve cover according to claim 3, characterized in that: The valve cover body (1) is connected to a plurality of connection seats (17) at an outer periphery; the plurality of connection seats (17) are spaced apart along the circumference of the valve cover body (1); the connection seat (17) is provided with an external connection hole (171); the external connection hole (171) is used for allowing a bolt to pass through and then be threadedly connected to an engine cylinder block; the valve cover body (1) is provided with an ignition hole (181); the ignition hole (181) is used for an igniter to be embedded; the valve cover body (1) is provided with an internal connection hole (182); the internal connection hole (182) is used for allowing a bolt to pass through and be threadedly connected to an engine cylinder block.

5. The valve cover according to claim 4, characterized in that: It also comprises a first sealing ring (3); an outer sealing groove (19) is provided on a side of the valve cover body (1) close to the engine cylinder block; the outer sealing groove (19) is arranged around the cavity opening of the working cavity (11) and the air outlet passage (14); and the first sealing ring (3) is embedded in the outer sealing groove (19).

6. The valve cover according to claim 4, characterized in that: It also includes a second sealing ring (4); an inner sealing groove (183) is provided on a side of the valve cover body (1) close to the engine cylinder body; the inner sealing groove (183) is arranged around the ignition hole (181); and the second sealing ring (4) is embedded in the inner sealing groove (183).

7. The valve cover according to claim 1, characterized in that: The outer periphery of the cover plate (2) is connected to a plurality of positioning seats (21); the plurality of positioning seats (21) are spaced apart along the circumference of the cover plate (2); the positioning seats (21) are provided with positioning grooves (211); the bottom of the working chamber (11) is connected to positioning columns (110); the number of the positioning columns (110) is the same as the number of the positioning seats (21) and corresponds one to one; the positioning columns (110) are embedded in the positioning grooves (211).

8. The valve cover according to claim 1, characterized in that: A first reinforcing rib (22) is connected to a side of the cover plate (2) away from the accommodating cavity (13).

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