Cylinder cover assembly and vehicle

Abstract

The utility model discloses an air cylinder cover assembly and a vehicle, the air cylinder cover assembly comprises an air cylinder cover provided with a rotatable cam shaft; the bearing mounting cover is connected with the cylinder cover, a mounting cavity is defined by the bearing mounting cover and the cylinder cover, one end of the cam shaft is rotatably supported between the bearing mounting cover and the cylinder cover, the end of the cam shaft is sleeved with an oil pump cam located in the mounting cavity, and a plunger guide hole communicated with the mounting cavity is further formed in the bearing mounting cover; an oil pump plunger is mounted in the plunger guide hole, and the oil pump cam is used for pushing the oil pump plunger to reciprocate along the plunger guide hole; wherein a plurality of concave parts are formed on the bearing mounting cover, and the plurality of concave parts are distributed at intervals, so that the bearing mounting cover is constructed into a multi-cavity structure. According to the air cylinder cover assembly, the casting manufacturability of the bearing installation cover is improved, so that the casting quality of the bearing installation cover is improved, and a multi-cavity structure formed by the multiple concave parts can absorb working noise so as to improve the NVH performance.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to a cylinder head assembly and a vehicle with the cylinder head assembly. Background Art

[0002] With the popularization of various hybrid vehicle models, since a hybrid system adds a set of electric drive structures, it needs to occupy a part of the vehicle engine compartment space. To ensure the compact design of a supercharged engine with a high-pressure fuel injection system on a hybrid vehicle, generally, a high-pressure oil pump is arranged at the lower end of the cylinder head in the mounted state. In this arrangement, a cam bearing cover is generally provided at the rear end of the cylinder head, and the cam bearing cover needs to install fixing bosses and plugs for the high-pressure oil pump and other pipeline brackets, resulting in a complex structure and difficult to ensure the casting and machining quality. At the same time, the high-pressure oil pump is installed at the outermost edge of the engine, and the noise generated by its operation is directly transmitted to the outside, with poor NVH performance and room for improvement. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a cylinder head assembly. The wall thickness of the bearing mounting cover of the cylinder head assembly is relatively uniform, improving the casting processability of the bearing mounting cover to enhance the casting quality of the bearing mounting cover, and the multi-cavity structure formed by a plurality of recessed portions can absorb working noise to improve the NVH performance.

[0004] The cylinder head assembly according to an embodiment of the utility model includes: a cylinder head, on which a rotatable camshaft is installed; a bearing mounting cover, which is connected to the cylinder head and defines an installation cavity with the cylinder head. One end of the camshaft is rotatably supported between the bearing mounting cover and the cylinder head, and a fuel pump cam located in the installation cavity is sleeved outside one end of the camshaft. The bearing mounting cover is further formed with a plunger guide hole communicating with the installation cavity, and a fuel pump plunger is installed in the plunger guide hole. The fuel pump cam is used to push the fuel pump plunger to reciprocate along the plunger guide hole; wherein, the bearing mounting cover is formed with a plurality of recessed portions, and the plurality of recessed portions are spaced apart and configured to make the bearing mounting cover a multi-cavity structure.

[0005] According to the cylinder head assembly of the embodiment of the utility model, by providing a plurality of recessed portions on the bearing mounting cover, the wall thickness of the bearing mounting cover can be reduced, improving the casting processability of the bearing mounting cover to enhance the casting quality of the bearing mounting cover, and the multi-cavity structure formed by the plurality of recessed portions can absorb working noise to improve the NVH performance.

[0006] According to the cylinder head assembly of some embodiments of the present invention, the bearing mounting cover forms a first connecting surface, and the cylinder head forms a second connecting surface, the first connecting surface is fitted and connected to the second connecting surface, and at least one recessed portion is arranged on the first connecting surface and is open toward the second connecting surface.

[0007] According to the cylinder head assembly of some embodiments of the utility model, the cylinder head includes a first bearing portion and a second bearing portion, the first bearing portion and the second bearing portion are respectively located on both sides of the mounting cavity, the bearing mounting cover includes a first cover portion and a second cover portion, the first cover portion and the second cover portion are respectively located on both sides of the mounting cavity, the first cover portion is connected to the top of the first bearing portion, and the second cover portion is connected to the top of the second bearing portion;

[0008] Wherein, the first cover portion is provided with the recessed portion, and the recessed portion is open toward the first bearing portion; and / or the second cover portion is provided with the recessed portion, and the recessed portion is open toward the second bearing portion.

[0009] According to the cylinder head assembly of some embodiments of the present invention, the first cover portion and the second cover portion are both provided with the recessed portion, and the recessed portion of the first cover portion and the recessed portion of the second cover portion are symmetrically distributed on both sides of the installation cavity.

[0010] According to the cylinder head assembly of some embodiments of the present invention, the side of the first cover portion and / or the second cover portion is further provided with the recessed portion, and the recessed portion located on the side of the first cover portion and the second cover portion is recessed toward the plunger guide hole.

[0011] According to the cylinder head assembly of some embodiments of the present invention, at least one of the recessed portions is recessed toward the plunger guide hole.

[0012] According to the cylinder head assembly of some embodiments of the present invention, there are multiple recessed portions recessed toward the plunger guide hole, and the recessed portions are distributed in parallel and spaced apart.

[0013] According to the cylinder head assembly of some embodiments of the present invention, at least one of the recessed portions is open toward the cylinder head, at least one of the recessed portions is recessed toward the plunger guide hole, and an extension direction of the recessed portion open toward the cylinder head is perpendicular to an extension direction of the recessed portion recessed toward the plunger guide hole.

[0014] According to some embodiments of the utility model, the cylinder head assembly also includes a high-pressure oil pump, which is connected to the end of the bearing mounting cover away from the cylinder head, and the plunger guide hole is open toward the high-pressure oil pump, and the oil pump plunger is suitable for driving the high-pressure oil pump to operate.

[0015] The present utility model also provides a vehicle.

[0016] The vehicle according to an embodiment of the present utility model is provided with the cylinder head assembly of any one of the above embodiments.

[0017] The vehicle and the above-mentioned cylinder head assembly have the same advantages over the prior art, which will not be elaborated here.

[0018] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0019] The above and / or additional aspects and advantages of the present utility model will become apparent and be easily understood from the description of the embodiments in conjunction with the following drawings, where:

[0020] Figure 1 is a schematic structural view of the cylinder head assembly according to an embodiment of the present utility model;

[0021] Figure 2 is a cross-section of the cylinder head assembly according to an embodiment of the present utility model Figure 1 ;

[0022] Figure 3 is a cross-section of the cylinder head assembly according to an embodiment of the present utility model Figure 2 ;

[0023] Figure 4 is a cross-section of the cylinder head assembly according to an embodiment of the present utility model Figure 3 ;

[0024] Figure 5 is a cross-section of the cylinder head assembly according to an embodiment of the present utility model Figure 4 ;

[0025] Figure 6 is a side view of the cylinder head assembly according to an embodiment of the present utility model;

[0026] Figure 7 is a bottom view of the bearing mounting cover of the cylinder head assembly according to an embodiment of the present utility model.

[0027] Reference Signs:

[0028] Cylinder head assembly 100,

[0029] Cylinder head 1, camshaft 11, second connection surface 12, first bearing portion 13, second bearing portion 14, bearing mounting cover 2, mounting cavity 21, plunger guide hole 22, recessed portion 23, first connection surface 24, first cover portion 25, second cover portion 26, oil pump cam 3, oil pump plunger 4, high-pressure oil pump 5. Detailed implementation mode

[0030] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model 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 therefore should not be construed as a limitation to the present utility model. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] Unless otherwise specified, the front-rear direction in this application is the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction is the transverse direction of the vehicle, i.e., the Y direction; and the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.

[0034] The following refers to Figures 1-7 Describe the cylinder head assembly 100 according to an embodiment of the present utility model. By providing a plurality of recesses 23 in the bearing mounting cover 2, the wall thickness of the bearing mounting cover 2 can be reduced, the casting processability of the bearing mounting cover 2 is improved, the casting quality of the bearing mounting cover 2 is enhanced, and the multi-cavity structure formed by the plurality of recesses 23 can absorb working noise to improve the NVH performance.

[0035] As Figures 1-7 shown, the cylinder head assembly 100 according to an embodiment of the present utility model includes: a cylinder head 1 and a bearing mounting cover 2.

[0036] The cylinder head 1 is installed with a rotatable camshaft 11. Specifically, the cylinder head 1 is an important component of the engine. It is disposed above the cylinder to enclose the upper part of the cylinder. The camshaft 11 can control the opening and closing of the intake valve and exhaust valve of the engine. The camshaft 11 is rotatably connected to the cylinder head 1, that is, the camshaft 11 can rotate relative to the cylinder head 1. Among them, the camshaft 11 extends along the length direction of the cylinder head 1 and can drive multiple groups of intake valves, exhaust valves and other structures to move simultaneously when the camshaft 11 rotates.

[0037] The bearing mounting cover 2 is connected to the cylinder head 1 and defines an installation cavity 21 with the cylinder head 1. One end of the camshaft 11 is rotatably supported between the bearing mounting cover 2 and the cylinder head 1. And a fuel pump cam 3 located in the installation cavity 21 is sleeved outside one end of the camshaft 11. The bearing mounting cover 2 is also formed with a plunger guide hole 22 communicating with the installation cavity 21. A fuel pump plunger 4 is installed in the plunger guide hole 22. The fuel pump cam 3 is used to push the fuel pump plunger 4 to reciprocate along the plunger guide hole 22.

[0038] Specifically, the bearing mounting cover 2 is a component for fixing the bearing. The bearing mounting cover 2 is located at the edge position of the cylinder head 1. And one end of the bearing mounting cover 2 is detachably connected to the cylinder head 1, so that an installation cavity 21 can be defined between the bearing mounting cover 2 and the cylinder head 1 for accommodating one end of the fuel pump cam 3 and the camshaft 11. And an installation hole is also defined between the bearing mounting cover 2 and the cylinder head 1. One end of the camshaft 11 is rotatably supported in the installation hole, and a bearing is arranged in the installation hole, which can stably support one end of the camshaft 11 and improve the rotational stability of the camshaft 11. And the bearing mounting cover 2 is provided with a plunger guide hole 22 for accommodating the fuel pump plunger 4. And as Figure 2 、 Figure 4 and Figure 7 shown, the plunger guide hole 22 communicates with the installation cavity 21, which is convenient for the fuel pump plunger 4 to cooperate with the fuel pump cam 3.

[0039] During actual assembly, the fuel pump cam 3 is sleeved on one end of the camshaft 11, and the fuel pump plunger 4 is installed in the plunger guide hole 22. The fuel pump cam 3 and the fuel pump plunger 4 are in pressing fit. In this way, after the camshaft 11 rotates, it can drive the fuel pump cam 3 to rotate. The rotation of the fuel pump cam 3 can push the fuel pump plunger 4 to reciprocate along the plunger guide hole 22 to compress and transport lubricating oil.

[0040] Among them, the bearing mounting cover 2 is formed with a plurality of recessed portions 23. The plurality of recessed portions 23 are spaced apart and distributed, and the bearing mounting cover 2 is configured as a multi-cavity structure. Specifically, a plurality of recessed portions 23 can be provided in the solid part of the bearing mounting cover 2, and the plurality of recessed portions 23 are spaced apart and distributed. The plurality of recessed portions 23 are respectively spaced apart from the mounting cavity 21 and the plunger guide hole 22, which can prevent the recessed portions 23 from communicating with other structures and causing a reduction in structural strength. Among them, the number of recessed portions 23 can be set to two, three, four, etc.

[0041] Thus, the bearing mounting cover 2 can be formed by casting. There are many mounting structures inside the bearing mounting cover 2, and it may also mount fixed bosses and plugs of other pipeline brackets and other structures, making the structure of the bearing mounting cover 2 complex, and it is not easy to ensure the casting and processing quality. By providing a plurality of recessed portions 23, the wall thickness of the bearing mounting cover 2 can be reduced, and the wall thickness of the bearing mounting cover 2 is more uniform, which is conducive to the discharge of gas during the casting process, can reduce the generation of bubbles and defects, thereby improving the casting quality of the bearing mounting cover 2. And the bearing mounting cover 2 is installed at the edge position of the cylinder head 1. When the oil pump plunger 4 works, it will generate noise. The multi-cavity structure formed by the plurality of recessed portions 23 can absorb part of the noise to improve the NVH performance. And the plurality of recessed portions 23 can reduce the weight of the bearing mounting cover 2 without changing the structural strength of the bearing mounting cover 2, so as to reduce the weight of the entire engine.

[0042] For the cylinder head assembly 100 according to the embodiment of the present invention, by providing a plurality of recessed portions 23 on the bearing mounting cover 2, the wall thickness of the bearing mounting cover 2 can be reduced, the casting processability of the bearing mounting cover 2 is improved, so as to improve the casting quality of the bearing mounting cover 2, and the multi-cavity structure formed by the plurality of recessed portions 23 can absorb the working noise to improve the NVH performance.

[0043] In some embodiments, the bearing mounting cover 2 is formed with a first connection surface 24, and the cylinder head 1 is formed with a second connection surface 12. The first connection surface 24 is attached and connected to the second connection surface 12, and at least one recessed portion 23 is provided on the first connection surface 24 and opens towards the second connection surface 12.

[0044] Specifically, such as Figure 2 、 Figure 5 and Figure 6As shown in the figure, a first connection surface 24 is formed at one end of the bearing mounting cover 2, and a second connection surface 12 is formed on the side of the cylinder head 1 close to the bearing mounting cover 2. The first connection surface 24 and the second connection surface 12 are arranged in parallel. A plurality of connection holes are provided in the bearing mounting cover 2, and the connection holes can be configured as through holes. A plurality of mounting holes are provided in the cylinder head 1, and the mounting holes can be configured as threaded holes. The plurality of mounting holes and the plurality of connection holes are distributed in one-to-one correspondence. In this way, during installation, the first connection surface 24 and the second connection surface 12 are attached and connected, and a plurality of connection bolts are respectively inserted through the connection holes and the mounting holes, so that the bearing mounting cover 2 is detachably connected to the cylinder head 1, which can improve the connection strength between the bearing mounting cover 2 and the cylinder head 1, and the fitting connection can ensure the installation accuracy of the bearing mounting cover 2 and the cylinder head 1, and can ensure the stability and reliability of the structures of both.

[0045] Among them, at least one recessed portion 23 is provided on the first connection surface 24. For example, one recessed portion 23 can be provided on the first connection surface 24, or a plurality of recessed portions 23 can be provided. The recessed portion 23 recesses from the first connection surface 24 in a direction away from the second connection surface 12, and the recessed portion 23 is open towards the second connection surface 12. In this way, at least one cavity structure can be formed inside the bearing mounting cover 2, which can reduce the heavy structure inside the bearing mounting cover 2 to improve the casting process of the bearing mounting cover 2.

[0046] In some embodiments, the cylinder head 1 includes a first bearing portion 13 and a second bearing portion 14. The first bearing portion 13 and the second bearing portion 14 are respectively located on both sides of the installation cavity 21. The bearing mounting cover 2 includes a first cover portion 25 and a second cover portion 26. The first cover portion 25 and the second cover portion 26 are respectively located on both sides of the installation cavity 21. The first cover portion 25 is connected above the first bearing portion 13, and the second cover portion 26 is connected above the second bearing portion 14.

[0047] Specifically, as Figure 3 shown, the cylinder head 1 includes a first bearing portion 13 and a second bearing portion 14 distributed along the axial direction of the camshaft 11. The first bearing portion 13 and the second bearing portion 14 are respectively located on both sides of the installation cavity 21. Bearings are provided in the first bearing portion 13 and the second bearing portion 14. The bearing mounting cover 2 includes a first cover portion 25 and a second cover portion 26 distributed along the axial direction of the camshaft 11. The first cover portion 25 and the second cover portion 26 are respectively located on both sides of the installation cavity 21. The first cover portion 25 is correspondingly arranged with the first bearing portion 13, and the second cover portion 26 is correspondingly arranged with the second bearing portion 14. During installation, the first cover portion 25 and the second cover portion 26 are correspondingly connected above the first cover portion 25 and the second cover portion 26, and the first cover portion 25 and the first bearing portion 13 and the second cover portion 26 and the second bearing portion 14 are both used to sleeved the camshaft 11, which can ensure the reliable installation of the camshaft 11 and the bearing mounting cover 2, and further ensure the assembly accuracy of the oil pump cam 3 and the camshaft 11 in the installation cavity 21.

[0048] Among them, the first cover portion 25 is provided with a recessed portion 23, and the recessed portion 23 opens towards the first bearing portion 13. If the recessed portion 23 is recessed in a direction away from the first bearing portion 13 and opens towards the first bearing portion 13, the first cover portion 25 can form a cavity structure, which can thin the internal structure of the first cover portion 25, reduce the thickness of the first cover portion 25, and thus improve the casting quality of the first cover portion 25.

[0049] In some other embodiments, the second cover portion 26 is provided with a recessed portion 23, and the recessed portion 23 opens towards the second bearing portion 14. If the recessed portion 23 is recessed in a direction away from the second bearing portion 14 and opens towards the second bearing portion 14, the second cover portion 26 can form a cavity structure, which can thin the internal structure of the second cover portion 26, reduce the thickness of the second cover portion 26, and thus improve the casting quality of the second cover portion 26.

[0050] Thus, the recessed portion 23 can be provided individually in one of the first cover portion 25 and the second cover portion 26, or the recessed portion 23 can be provided in both the first cover portion 25 and the second cover portion 26. Its setting method is diverse and can be selectively set according to the actual structural characteristics to better optimize the structural characteristics of the bearing mounting cover 2 and improve the casting process of the bearing mounting cover 2.

[0051] In some embodiments, both the first cover portion 25 and the second cover portion 26 are provided with a recessed portion 23, and the recessed portion 23 of the first cover portion 25 and the recessed portion 23 of the second cover portion 26 are symmetrically distributed on both sides of the installation cavity 21.

[0052] Specifically, both the first cover portion 25 and the second cover portion 26 are provided with a recessed portion 23, such as Figure 5 shown, the installation cavity 21 can be constructed as a circular cavity, the first cover portion 25 and the second cover portion 26 are symmetrically distributed on both axial sides of the installation cavity 21, the recessed portion 23 of the first cover portion 25 is distributed on both radial sides of the installation cavity 21 and is symmetrically distributed along the radial direction of the installation cavity 21. The recessed portion 23 of the second cover portion 26 can be arranged in the same way as the recessed portion 23 of the first cover portion 25, that is, the recessed portion 23 of the second cover portion 26 is symmetrically distributed on both radial sides of the installation cavity 21. Such a setting facilitates the manufacture of the casting mold and is also convenient for casting. Among them, as Figure 7 shown, the recessed portions 23 of the first cover portion 25 and the second cover portion 26 can be respectively provided as two.

[0053] Thus, through the above arrangement, the bearing mounting cover 2 can be provided with recessed portions 23 on both axial sides and both radial sides of the installation cavity 21, which can make the solid structure of the bearing mounting cover 2 form a multi-cavity structure, reduce the thickness of the bearing mounting cover 2, improve its casting process, and the overall structure is simple and the processing cost is low.

[0054] In some embodiments, a recessed portion 23 is further provided on the side of the first cover portion 25 and / or the second cover portion 26, and the recessed portion 23 located on the side of the first cover portion 25 and the second cover portion 26 is recessed toward the plunger guide hole 22.

[0055] Specifically, the recessed portion 23 can be provided on the side of the first cover portion 25, or the recessed portion 23 can be provided on the side of the second cover portion 26. Moreover, the recessed portion 23 can be provided on both the side of the first cover portion 25 and the side of the second cover portion 26. There are various ways of setting it, and it can be selectively set according to the actual structural characteristics.

[0056] As Figure 1 shown, in this embodiment, the recessed portion 23 can be provided on both the side of the first cover portion 25 and the side of the second cover portion 26. The recessed portion 23 is recessed from the outer wall of the first cover portion 25 or the second cover portion 26 toward the plunger guide hole 22, that is, the recessed portion 23 opens in the direction away from the plunger guide hole 22. In this way, a cavity structure can be formed in the first cover portion 25 and the second cover portion 26 respectively, the internal structure of the first cover portion 25 and the second cover portion 26 can be thinned, and the thickness of the structure near the plunger guide hole 22 can be reduced to lower the thickness of the structure near the plunger guide hole 22. By optimizing the structural characteristics of the bearing mounting cover 2, the casting quality of the bearing mounting cover 2 can be improved. Moreover, when the oil pump plunger 4 slides relative to the plunger guide hole 22, the heat dissipation function can be realized through the recessed portion 23, and the heat of the bearing mounting cover 2 can be reduced.

[0057] In some embodiments, at least one recessed portion 23 is recessed toward the plunger guide hole 22. That is to say, at least one recessed portion 23 can be provided on the first cover portion 25 and / or the second cover portion 26 and recessed toward the plunger guide hole 22, that is, one or more recessed portions 23 are provided on the first cover portion 25 and / or the second cover portion 26. In this way, one or more cavity structures can be formed in the first cover portion 25 and the second cover portion 26, and it can be selectively set according to the actual structural characteristics. Thus, through the above setting, at least one cavity structure can be formed in the structure near the plunger guide hole 22 to thin the thickness of the structure near the plunger guide hole 22 and improve the casting quality of the structure around the plunger guide hole 22.

[0058] In some embodiments, there are multiple recessed portions 23 recessed toward the plunger guide hole 22, and they are distributed in parallel and spaced apart. The multiple recessed portions 23 are respectively recessed from the outer side walls of the first cover portion 25 and the second cover portion 26 toward the plunger guide hole 22, and the multiple recessed portions 23 are distributed in spaced apart, and the spacing between the recessed portions 23 is greater than the sum of the cavity sizes of the two recessed portions 23, so as to avoid the penetration between the recessed portions 23 causing low local structural strength, and the cavity sizes of the multiple recessed portions 23 are small. Through the above arrangement, a multi-cavity structure can be realized through multiple recessed portions 23, and the structural strength of the first cover portion 25 and the second cover portion 26 can be maintained to resist the vibration of the oil pump plunger 4 during operation, thereby ensuring the working stability of the oil pump plunger 4. Among them, the recessed portions 23 recessed toward the plunger guide hole 22 can be set to two, three, etc., such as Figure 5 and Figure 6 As shown, two recessed portions 23 recessed toward the plunger guide hole 22 are provided.

[0059] In some embodiments, at least one recess 23 is open toward the cylinder head 1, at least one recess 23 is recessed toward the plunger guide hole 22, and an extension direction of the recess 23 open toward the cylinder head 1 is perpendicular to an extension direction of the recess 23 recessed toward the plunger guide hole 22.

[0060] Specifically, the bearing mounting cover 2 may be provided with one or more recessed portions 23 open toward the cylinder head 1, and the bearing mounting cover 2 may also be provided with one or more recessed portions 23 recessed toward the plunger guide hole 22, and as Figure 5 As shown, the extension direction of the recessed portion 23 open toward the cylinder head 1 can be along the up and down direction, and the extension direction of the recessed portion 23 recessed toward the plunger guide hole 22 can be along the axial direction of the camshaft 11, that is, the extension directions of the two recessed portions 23 are perpendicular, and the two recessed portions 23 do not penetrate each other, and a plurality of different cavity structures can be formed in two directions, which can be more evenly distributed on the bearing mounting cover 2, so as to more reasonably thin the thick structure of the bearing mounting cover 2, so that the wall thickness distribution of the bearing mounting cover 2 is more even, which can effectively avoid internal defects of the bearing mounting cover 2 during the casting process to ensure product quality.

[0061] The extension directions of the two different recessed portions 23 may also be set to only intersect but not be perpendicular, and the setting methods are various and can be flexibly set according to the structural characteristics of the bearing mounting cover 2 .

[0062] In some embodiments, the cylinder head assembly 100 also includes a high-pressure oil pump 5, which is connected to the end of the bearing mounting cover 2 facing away from the cylinder head 1, and the plunger guide hole 22 is open toward the high-pressure oil pump 5, and the oil pump plunger 4 is suitable for driving the high-pressure oil pump 5 to operate.

[0063] Specifically, Figure 1 and Figure 2As shown, the high-pressure oil pump 5 is used to pump lubricating oil. The bearing mounting cover 2 is connected to the high-pressure oil pump 5 at one end facing away from the cylinder head 1, and the two can be detachably connected by fasteners such as bolts. The housing of the high-pressure oil pump 5 is provided with an oil inlet and an oil outlet for pumping and compressing lubricating oil. Among them, the plunger guide hole 22 in the bearing mounting cover 2 opens towards the high-pressure oil pump 5, facilitating the connection between the oil pump plunger 4 and the high-pressure oil pump 5. In this way, when the engine is working, the oil pump cam 3 rotates with the camshaft 11, and the oil pump cam 3 pushes the oil pump plunger 4 to reciprocate along the plunger guide hole 22, and lubricating oil is extracted, pressurized and conveyed during the reciprocating movement of the oil pump plunger 4.

[0064] The present utility model also proposes a vehicle.

[0065] For the vehicle according to the embodiment of the present utility model, the cylinder head assembly 100 of any one of the above embodiments is provided. By providing a plurality of recessed portions 23 in the bearing mounting cover 2, the wall thickness of the bearing mounting cover 2 can be reduced, the casting processability of the bearing mounting cover 2 is improved to enhance the casting quality of the bearing mounting cover 2, and the multi-cavity structure formed by the plurality of recessed portions 23 can absorb working noise to improve the NVH performance.

[0066] 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" 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 utility model. In this specification, the schematic representations 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 any one or more embodiments or examples in a suitable manner.

[0067] Although the embodiments of the present utility model 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 purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A cylinder head assembly, characterized in that: include: A cylinder head, wherein a rotatable camshaft is mounted on the cylinder head; A bearing mounting cover, the bearing mounting cover is connected to the cylinder head and defines a mounting cavity with the cylinder head, one end of the camshaft is rotatably supported between the bearing mounting cover and the cylinder head, and one end of the camshaft is covered with an oil pump cam located in the mounting cavity, the bearing mounting cover is also formed with a plunger guide hole communicating with the mounting cavity, an oil pump plunger is installed in the plunger guide hole, and the oil pump cam is used to push the oil pump plunger to reciprocate along the plunger guide hole; The bearing mounting cover is formed with a plurality of recessed portions, and the plurality of recessed portions are distributed at intervals so that the bearing mounting cover is constructed as a multi-cavity structure.

2. The cylinder head assembly according to claim 1, characterized in that: The bearing mounting cover is formed with a first connection surface, and the cylinder head is formed with a second connection surface. The first connection surface is closely connected to the second connection surface, and at least one of the recessed portions is arranged on the first connection surface and is open toward the second connection surface.

3. The cylinder head assembly according to claim 1, characterized in that: The cylinder head comprises a first bearing portion and a second bearing portion, the first bearing portion and the second bearing portion are respectively located at two sides of the mounting cavity, the bearing mounting cover comprises a first cover portion and a second cover portion, the first cover portion and the second cover portion are respectively located at two sides of the mounting cavity, the first cover portion is connected to the top of the first bearing portion, and the second cover portion is connected to the top of the second bearing portion; Wherein, the first cover portion is provided with the recessed portion, and the recessed portion is open toward the first bearing portion; and / or the second cover portion is provided with the recessed portion, and the recessed portion is open toward the second bearing portion.

4. The cylinder head assembly according to claim 3, characterized in that: The first cover part and the second cover part are both provided with the recessed part, and the recessed part of the first cover part and the recessed part of the second cover part are symmetrically distributed on both sides of the installation cavity.

5. The cylinder head assembly according to claim 3, characterized in that: The side of the first cover part and / or the second cover part is further provided with the recessed part, and the recessed part located at the side of the first cover part and the second cover part is recessed toward the plunger guide hole.

6. The cylinder head assembly according to claim 1, characterized in that: At least one of the recessed portions is recessed toward the plunger guide hole.

7. The cylinder head assembly according to claim 6, characterized in that: There are a plurality of recessed portions recessed toward the plunger guide hole, and the recessed portions are distributed in parallel and spaced apart.

8. The cylinder head assembly according to claim 1, characterized in that: At least one of the recessed portions is open toward the cylinder head, at least one of the recessed portions is recessed toward the plunger guide hole, and an extension direction of the recessed portion open toward the cylinder head is perpendicular to an extension direction of the recessed portion recessed toward the plunger guide hole.

9. The cylinder head assembly according to claim 1, characterized in that: It also includes a high-pressure oil pump, which is connected to one end of the bearing mounting cover away from the cylinder head, and the plunger guide hole is open toward the high-pressure oil pump, and the oil pump plunger is suitable for driving the high-pressure oil pump to operate.

10. A vehicle, characterized in that: A cylinder head assembly according to any one of claims 1 to 9 is provided.

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