Cylinder head cover, engine and vehicle

Abstract

The utility model discloses a cylinder head cover, an engine and a vehicle, the cylinder head cover comprises a cover body, the cover body is provided with an installation space used for installing a cam shaft, the installation space extends along the axial direction of the cam shaft, the cover body is provided with a tool withdrawal groove, the tool withdrawal groove and the installation space are sequentially arranged in the axial direction, and the tool withdrawal groove and the installation space extend along the axial direction of the cam shaft. And the tool withdrawal groove is communicated with the mounting space. The tool withdrawal groove is formed in the cover body, and the tool withdrawal groove and the mounting space are sequentially formed in the axial direction, so that the tool withdrawal groove can be communicated with the mounting space in the axial direction, and a tool can conveniently and completely machine the mounting groove.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a cylinder head cover, an engine and a vehicle. Background Art

[0002] In the related art, the slotting at the rear end of the installation space is difficult to meet the dimensional requirements of the tool retraction, which will affect the processing integrity of the tool on the installation space. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a cylinder head cover, which is convenient for a tool to completely process the installation space.

[0004] The utility model further provides an engine.

[0005] The utility model further provides a vehicle.

[0006] According to the utility model, the cylinder head cover comprises: a cover body, the cover body is provided with an installation space for installing a camshaft, the installation space extends along the axial direction of the camshaft, the cover body is provided with a tool retreat groove, the tool retreat groove and the installation space are arranged in sequence in the axial direction, and the tool retreat groove is communicated with the installation space.

[0007] According to the cylinder head cover of the utility model, the tool retreat groove is arranged on the cover body, and the tool retreat groove and the installation space are arranged in sequence in the axial direction, so that the tool retreat groove can be interconnected with the installation space in the axial direction, which is convenient for the tool to completely process the installation groove.

[0008] In some examples of the utility model, the cover body is provided with a camshaft seat, and the installation space includes a mounting groove opened on the camshaft seat and used to form a camshaft hole with the cylinder head, in a predetermined direction, the diameter of the mounting groove is a, the size of the retreat groove (20) is b, and the relationship between a and b is: a<b, wherein the predetermined direction is arranged perpendicular to the axial direction.

[0009] In some examples of the present invention, the radius of the mounting groove is d, and in the axial direction, the size of the tool withdrawal groove is c, and the relationship between c and d is: c>d.

[0010] In some examples of the present invention, the value range of c is: 8mm≤c≤20mm.

[0011] In some examples of the present utility model, the cover body is provided with a protruding portion, the protruding portion is protruding toward the rear end in the axial direction, and the tool withdrawal groove is provided on the protruding portion.

[0012] In some examples of the present invention, the cylinder head cover also includes: a high-pressure oil pump mounting seat, the cover body includes a first part close to the head of the vehicle and a second part close to the rear of the vehicle, the first part and the second part are arranged side by side in a predetermined direction, and the back cutter groove and the high-pressure oil pump mounting seat are both arranged on the second part.

[0013] In some examples of the present invention, the number of the installation spaces is two, one of which is located on the first part, and the other of which is located on the second part, and the tool withdrawal groove and the installation space on the second part are arranged sequentially in the axial direction.

[0014] In some examples of the present invention, the cylinder head cover also includes: a first seal and a second seal, in the axial direction, the first seal is sealed at the rear end of the installation space on the first part, the second seal is sealed at the rear end of the backing groove, and the first seal and the second seal are both integrally formed with the cover body.

[0015] In some examples of the present invention, the installation space includes an installation groove opened on the camshaft seat and used to form a camshaft hole with the cylinder head. The number of the installation grooves on the two installation spaces is multiple, and the number of the installation grooves on the second part is more than the number of the installation grooves on the first part.

[0016] The engine according to the utility model comprises: a cylinder head; and the cylinder head cover mentioned above, wherein the cylinder head cover is arranged on the cylinder head.

[0017] In some examples of the present invention, an oil return channel is provided on the cylinder head, and the oil return channel is communicated with the tool retreat groove.

[0018] The vehicle according to the utility model comprises: the engine mentioned above.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic diagram of a first structure of a cylinder head cover according to an embodiment of the utility model;

[0022] Figure 2is a schematic diagram of a second structure of a cylinder head cover according to an embodiment of the utility model;

[0023] Figure 3 is a partial cross-sectional view of an engine according to an embodiment of the utility model;

[0024] Figure 4 It is a schematic diagram of the partial structure of an engine according to an embodiment of the utility model.

[0025] Reference numerals:

[0026] 1. Cylinder head cover;

[0027] 10. Cover body; 11. Installation space; 12. Protrusion; 13. First part; 14. Second part; 15. Camshaft seat; 16. Installation groove; 20. Back-off groove; 30. First sealing member; 40. Second sealing member; 50. High-pressure oil pump mounting seat; 70. Oil rail; 80. Oil inlet pipe; 2. Engine; 201. Cylinder head; 2011. Oil return channel. DETAILED DESCRIPTION

[0028] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0029] Reference below Figure 1-Figure 4 The cylinder head cover 1 according to the embodiment of the present invention is described. The cylinder head cover 1 can be arranged on a vehicle and is mainly used to cover the cylinder head 201 .

[0030] like Figure 1 and Figure 2 As shown, the cylinder head cover 1 according to the utility model includes a cover body 10, the cover body 10 is provided with an installation space 11 for installing a camshaft, the installation space 11 extends along the axial direction of the camshaft, the cover body 10 is provided with a back-cut groove 20, the back-cut groove 20 and the installation space 11 are arranged in sequence in the axial direction, and the back-cut groove 20 is connected with the installation space 11. Among them, the cover body 10 is the main part of the cylinder head cover 1, which mainly plays the role of sealing. The installation space 11 mainly plays the role of installation, and the camshaft can be installed in the installation groove 16. The back-cut groove 20 mainly plays the role of avoidance, which is convenient for processing.

[0031] It should be noted that when processing the installation groove 16 of the installation space 11, the tool processes in the axial direction, that is, from front to back along the axial direction of the camshaft, and the tool withdrawal groove 20 can be set at the rear end of the cover body 10 along the axial direction, wherein the front end in the axial direction refers to the end where the timing system is installed, and the rear end in the axial direction is not where the timing system is installed. This setting is more reasonable, and the tool can better complete the processing of the installation groove 16.

[0032] Therefore, by setting the tool retreat groove 20 on the cover body 10, and the tool retreat groove 20 and the installation space 11 are sequentially set in the axial direction, the tool retreat groove 20 can be interconnected with the installation space 11 in the axial direction, so that the tool can completely process the installation groove 16.

[0033] In addition, if Figure 2 As shown, the cover body 10 is provided with a camshaft seat 15, and the installation space 11 includes a mounting groove 16 opened on the camshaft seat 15 and used to form a camshaft hole with the cylinder head. In the predetermined direction, the diameter of the mounting groove 16 is a, and the minimum size of the back-cut groove 20 is b. The relationship between a and b is: a<b, wherein the predetermined direction is set perpendicular to the axial direction. In other words, the diameter of the mounting groove 16 and the minimum size of the back-cut groove 20 need to satisfy a certain relationship, that is, the diameter of the mounting groove 16 needs to be smaller than the minimum size of the back-cut groove 20. This setting is more reasonable. After processing the mounting groove 16, the tool can be directly withdrawn into the back-cut groove 20, and the back-cut groove 20 will not interfere with the tool, thereby facilitating the tool to process the mounting groove 16. It should be noted that the predetermined direction is any direction perpendicular to the axial direction, so that the back-cut effect can be achieved.

[0034] In addition, if Figure 2 As shown, in the axial direction, the size of the tool retreat groove 20 is c, the radius of the mounting groove 16 is d, and the relationship between c and d is: c>d. That is to say, in the axial direction, the size of the tool retreat groove 20 needs to meet a certain range. It should be noted that the shape of the tool is a spherical structure. In order for the tool to completely process the mounting groove 16, at least half of the spherical structure needs to pass through the mounting groove 16. Therefore, the size of the tool retreat groove 20 needs to be larger than the radius of the mounting groove 16, so that at least half of the tool can extend into the interior of the tool retreat groove 20, so that the tool can more completely process the mounting groove 16.

[0035] Furthermore, if Figure 2As shown, the value range of c is: 8mm≤c≤20mm. That is to say, in the axial direction, the size of the undercut 20 needs to meet a certain range. It should be noted that the diameter range of the tool is 15mm-30mm. Therefore, in the axial direction, the size of the undercut 20 needs to be no less than 8mm, so that the minimum size of the undercut 20 in the axial direction can be ensured to be greater than the minimum radius of the tool, so that at least half of the tool can be extended into the undercut 20, and then the undercut 20 can be used to complete the processing of the mounting groove 16. Similarly, in the axial direction, the size of the undercut 20 needs to be less than 20mm, so that the maximum size of the undercut 20 in the axial direction can be ensured to be greater than the maximum radius of the tool, so that at least half of the tool can be extended into the undercut 20, and then the undercut 20 can be used to complete the processing of the mounting groove 16. Moreover, when the radius of the tool is the largest and the size of the undercut 20 in the axial direction is the smallest, it can also be satisfied that at least half of the tool can be withdrawn from the inside of the undercut 20. In this way, at least half of the tool can be withdrawn into the tool withdrawal groove 20 , which facilitates the complete processing of the installation groove 16 by the tool.

[0036] In addition, if Figure 2 As shown, the cover body 10 is provided with a protrusion 12, and the protrusion 12 is protruded toward the rear end in the axial direction, and the tool retreat groove 20 is arranged on the protrusion 12. Among them, the protrusion 12 mainly plays a role of installation. The protrusion 12 is protruded toward the rear end in the axial direction, so that the protrusion 12 can be adapted to the position of the tool retreat groove 20, that is, the protrusion 12 can provide space for the processing of the tool retreat groove 20. Specifically, the tool retreat groove 20 is arranged at the protrusion 12, and such an arrangement is more reasonable, and the tool retreat groove 20 can better cooperate with the tool. It should be noted that the protruding setting does not shift the outline size of the cover body 10 backward as a whole, so that the outline size of the cover body 10 can be reduced, which is conducive to lightweight design.

[0037] In addition, if Figure 1 and Figure 2 As shown, the cover body 10 has a first part 13 and a second part 14, the first part 13 is close to the head of the vehicle, the second part 14 is close to the rear of the vehicle, the first part 13 and the second part 14 are arranged side by side in a predetermined direction, the number of installation spaces 11 is two, one of the installation spaces 11 is located on the first part 13, the other installation space 11 is located on the second part 14, and the undercut 20 and the installation spaces 11 on the second part 14 are arranged in sequence in the axial direction. Among them, the first part 13 is the side where air enters the interior of the engine 2, and the second part 14 is the side where the engine combustion exhaust gas is discharged from the interior of the engine 2 to the outside. Both installation spaces 11 can play a role of installation, and the camshaft can be installed in the two installation spaces 11.

[0038] Specifically, one of the installation spaces 11 is located on the first part 13, so that the camshaft arranged in the installation space 11 of the first part 13 can better cooperate with the intake valve of the first part 13, so as to control the opening and closing of the intake valve. Similarly, another installation space 11 is located on the second part 14, so that the camshaft arranged in the installation space 11 of the second part 14 can better cooperate with the outlet valve of the second part 14, so as to control the opening and closing of the outlet valve. In this way, the engine 2 can work normally. In addition, it should be noted that the backing groove 20 and the installation space 11 on the second part 14 are arranged in sequence in the axial direction, and there is no other structure blocking the installation space 11 of the first part 13, so there is no need for a special backing space, that is, there is no need to set the backing groove 20, and the cover body 10 is behind the installation space 11 of the second part 14. If the backing groove 20 is not set, this installation space 11 will not be able to be fully processed.

[0039] To be more specific, the high-pressure oil pump drives the plunger on one of the camshafts to work. The camshaft with the oil pump-driven cam is longer than the other one. In order to ensure that the longer part of the shaft does not affect the stiffness of the shaft as a cantilever structure, it is necessary to add a journal at the tail end of the shaft to support the end of the shaft. The processing of this journal requires a special tool retraction space. The other shaft has no other structure that hinders the tool retraction and has its own tool retraction space.

[0040] In addition, the number of the mounting grooves 16 on the two mounting spaces 11 is plural, and the number of the mounting grooves 16 on the second part 14 is greater than the number of the mounting grooves 16 on the first part 13. Specifically, the mounting grooves 16 include: a first mounting groove and a second mounting groove, the first mounting groove is located in the first part 13, the second mounting groove is located in the second part 14, and the number of the second mounting grooves is greater than the number of the first mounting grooves, so that the number of journals of the camshaft installed in the second part 14 is also greater than the number of journals of the camshaft installed in the first part 13.

[0041] In addition, if Figure 1As shown, the cylinder head cover 1 also includes: a first seal 30 and a second seal 40. In the axial direction, the first seal 30 is sealed at the rear end of the installation space 11 on the first part 13, and the second seal 40 is sealed at the rear end of the undercut groove 20, and the first seal 30 and the second seal 40 are both integrally formed with the cover body 10. Among them, the first seal 30 and the second seal 40 can both play a sealing role. In the axial direction, the first seal 30 is sealed at the rear end of the installation space 11 on the first part 13, so that the first seal 30 can seal the rear end of the installation space 11 on the first part 13, thereby preventing the oil in the installation space 11 on the first part 13 from leaking out, and improving the safety of the use of the engine 2. Similarly, in the axial direction, the second seal 40 is sealed at the rear end of the undercut groove 20, so that the second seal 40 can seal the rear end of the undercut groove 20, thereby preventing the oil in the undercut groove 20 from leaking out, and further improving the safety of the use of the engine 2.

[0042] It should be noted that, in the prior art, some cylinder head covers 1 are penetrated during processing in order to withdraw the tool, that is, a hole is opened at the position of the second seal 40 for the tool to pass through and withdraw, and then a plug cover is provided to achieve sealing. However, this method will lead to poor sealing effect and an extra assembly process. After the withdrawal groove 20 is provided in the present solution, the first seal 30 and the second seal 40 can be integrally provided with the cover body 10, so that the sealing effect is better, and the process can be reduced, making the process simpler and more convenient.

[0043] Furthermore, if Figure 1 and Figure 4 As shown, the cylinder head cover 1 also includes a high-pressure oil pump mounting seat 50, and the high-pressure oil pump mounting seat 50 is provided with a second part 14. Among them, the high-pressure oil pump mounting seat 50 mainly plays the role of installation, and the high-pressure oil pump can be installed. It should be noted that the engine 2 also includes an oil rail 70 and an oil inlet pipe 80. Since the oil rail 70 is close to the second part 14, the high-pressure oil pump mounting seat 50 is arranged in the second part 14. Such an arrangement is more reasonable. Among them, the first part 13 of the engine 2 faces the direction of the front of the vehicle, and the second part 14 is away from the direction of the front of the vehicle. The high-pressure oil pump is arranged in the second part 14. When the vehicle collides, it is not easy to hit the high-pressure oil pump. In addition, the operation of the high-pressure oil pump is driven by the camshaft located in the second part 14. Such an arrangement facilitates the driving coordination between the high-pressure oil pump and the camshaft.

[0044] Specifically, Figure 2As shown, the cylinder head cover 1 also includes: a camshaft seat 15, which is arranged in the first part 13 and the second part 14. In some embodiments of the utility model, in the axial direction, six camshaft seats 15 are arranged at intervals in the second part 14, and in the direction from the front end to the rear end, the high-pressure oil pump mounting seat 50 is arranged between the fifth camshaft seat 15 and the sixth camshaft seat 15.

[0045] The mounting groove 16 provided on the camshaft seat 15 mainly serves as the mounting function. The camshaft seat 15 can be provided on the first part 13 and the second part 14. It should be noted that the number of camshaft seats 15 in the first part 13 and the second part 14 can be different, and the relatively extra part in the first part 13 and the second part 14 can be installed to drive other components, such as: driving a high-pressure oil pump. In addition, for example: on the first part 13, the number of camshaft seats 15 is 5. For example, in a four-cylinder engine, 5 camshaft seats 15 can be arranged at intervals, 3 camshaft seats 15 are arranged between two adjacent cylinders, and one is arranged at each end, which is conducive to the uniform distribution and stability of the camshaft load, the strength and rigidity of the camshaft, and the accurate control of the opening and closing of the valve.

[0046] In some embodiments provided by the utility model, the cylinder head cover 1 is provided with six mounting grooves 16 in the second portion 14, so that the camshaft can be supported at multiple positions of the second portion 14, so that the camshaft can work more stably. In the axial direction, the six mounting grooves 16 are arranged at intervals in the second portion 14, so that the six mounting grooves 16 can be arranged more comprehensively, and mutual interference between adjacent mounting grooves 16 can be avoided, thereby facilitating the installation and arrangement of the mounting grooves 16.

[0047] Moreover, in the direction from the front end to the rear end, the high-pressure oil pump mounting seat 50 is arranged between the fifth camshaft seat 15 and the sixth camshaft seat 15. Since the position of the oil inlet pipe 80 is close to the position between the fifth camshaft seat 15 and the sixth camshaft seat 15, such an arrangement is more reasonable, and the high-pressure oil pump mounting seat 50 can be closer to the position of the oil rail 70, so that the length of the oil inlet pipe 80 between the high-pressure oil pump and the oil rail 70 can be shortened, which is beneficial to reducing the fuel pressure loss and making the pressure in the oil rail 70 more stable. In addition, such an arrangement can make the fixed structures on both sides more stable, and reduce or avoid the noise problem caused by the operation of the high-pressure oil pump.

[0048] like Figure 3 and Figure 4As shown, the engine 2 according to the utility model includes a cylinder head 201 and the cylinder head cover 1 described in the above embodiment, and the cylinder head cover 1 is arranged on the cylinder head 201. Among them, the cylinder head 201 mainly plays the role of sealing. The cylinder head cover 1 is arranged on the cylinder head 201, so that the cylinder head cover 1 can be used to seal the cylinder head 201, thereby improving the sealing performance of the engine 2, so that the engine 2 can work better.

[0049] like Figure 3 As shown, the cylinder head 201 is provided with an oil return channel 2011, and the oil return channel 2011 is connected with the undercut groove 20. The oil return channel 2011 mainly plays the role of guiding and circulating, and the oil can circulate in the oil return channel 2011. The oil return channel 2011 is connected with the undercut groove 20, so that the lubricating oil of the sixth mounting groove can be returned, and the excess oil and the oil after lubricating the camshaft can enter the oil return channel 2011 from the undercut groove 20, so that the oil can be recovered easily.

[0050] As an optional embodiment, the oil return channel 2011 can be an integrally formed structure with the cylinder head 201, so that only one mold is needed when processing the oil return channel 2011 and the cylinder head 201, thereby reducing the processing workload and improving the integration of the engine.

[0051] The vehicle according to the embodiment of the utility model comprises: the engine 2 described in the above embodiment.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In the description of the present utility model, "plurality" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. In the description of the present utility model, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cylinder head cover (1), characterized in that: include: A cover body (10), wherein the cover body (10) is provided with an installation space (11) for installing a camshaft, wherein the installation space (11) extends along the axial direction of the camshaft, and wherein the cover body (10) is provided with a tool retreat groove (20), wherein the tool retreat groove (20) and the installation space (11) are arranged in sequence in the axial direction, and wherein the tool retreat groove (20) is communicated with the installation space (11).

2. The cylinder head cover (1) according to claim 1, characterized in that The cover body (10) is provided with a camshaft seat (15), and the installation space (11) includes a mounting groove (16) opened on the camshaft seat (15) and used to enclose a camshaft hole with the cylinder head. In a predetermined direction, the diameter of the mounting groove (16) is a, the size of the back cutter groove (20) is b, and the relationship between a and b is: a<b, wherein the predetermined direction is arranged perpendicular to the axial direction.

3. The cylinder head cover (1) according to claim 2, characterized in that The radius of the mounting groove (16) is d, and in the axial direction, the dimension of the tool retreat groove (20) is c, and the relationship between c and d is: c>d.

4. The cylinder head cover (1) according to claim 3, characterized in that The value range of c is: 8mm≤c≤20mm.

5. The cylinder head cover (1) according to claim 1, characterized in that The cover body (10) is provided with a protruding portion (12), the protruding portion (12) is protruding toward the rear end in the axial direction, and the tool retreat groove (20) is provided on the protruding portion (12).

6. The cylinder head cover (1) according to claim 1, characterized in that Also includes: A high-pressure oil pump mounting seat (50), the cover body (10) comprises a first portion (13) close to the head of a vehicle and a second portion (14) close to the rear of the vehicle, the first portion (13) and the second portion (14) are arranged side by side in a predetermined direction, and the back cutter groove (20) and the high-pressure oil pump mounting seat (50) are both arranged on the second portion (14).

7. The cylinder head cover (1) according to claim 6, characterized in that The number of the installation spaces (11) is two, one of the installation spaces (11) is located on the first part (13), the other of the installation spaces (11) is located on the second part (14), and the tool retreat groove (20) and the installation space (11) on the second part (14) are arranged sequentially in the axial direction.

8. The cylinder head cover (1) according to claim 7, characterized in that Also includes: A first seal (30) and a second seal (40), wherein in the axial direction, the first seal (30) is sealed at the rear end of the installation space (11) on the first part (13), and the second seal (40) is sealed at the rear end of the tool retreat groove (20), and the first seal (30) and the second seal (40) are both integrally formed with the cover body (10).

9. The cylinder head cover (1) according to claim 7, characterized in that The installation space (11) comprises an installation groove (16) which is opened on the camshaft seat (15) and is used to enclose a camshaft hole with the cylinder head. The number of the installation grooves (16) on the two installation spaces (11) is multiple, and the number of the installation grooves (16) on the second part (14) is greater than the number of the installation grooves (16) on the first part (13).

10. An engine (2), characterized in that: include: Cylinder head (201); The cylinder head cover (1) according to any one of claims 1 to 9, wherein the cylinder head cover (1) is arranged on the cylinder head (201).

11. The engine (2) according to claim 10, characterized in that The cylinder head (201) is provided with an oil return channel (2011), and the oil return channel (2011) is connected to the tool retreat groove (20).

12. A vehicle, characterized in that: include: The engine (2) as claimed in any one of claims 10 to 11.

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