CN213928570U

CN213928570U - Cylinder head assembly, engine and vehicle

Info

Publication number: CN213928570U
Application number: CN202023336136.XU
Authority: CN
Inventors: 李米龙; 胡佳佳; 张友东; 陈海龙; 邸金瑞; 刘欢
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-10
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a cylinder head assembly, engine and vehicle, the cylinder head assembly includes cylinder head body and mount pad, the mount pad is used for installing the petrol pump, the cylinder head body is the cast molding structure, the cylinder head body is equipped with first cavity, oil return structure and oil bath; the first chamber is communicated with the mounting seat and configured to accommodate a camshaft and an oil pump cam arranged on the camshaft; the oil return structure provides communication between the first chamber and the oil sump. The utility model discloses a cylinder head assembly's processing cost is low, light in weight to its mode is better.

Description

Cylinder head assembly, engine and vehicle

Technical Field

The utility model relates to an engine technical field specifically relates to a cylinder head assembly, engine and vehicle.

Background

Since the gasoline direct injection engine injects high-pressure gasoline into the cylinder, a gasoline pump is required to supply the high-pressure gasoline. The gasoline pump is generally arranged around the cylinder cover and driven by the cam shaft, and when the gasoline pump is arranged at one end of the cylinder cover and protrudes out of the oil pool body, an oil return structure needs to be designed so that lubricating oil in the working process of the cam shaft and the gasoline pump can smoothly return to the oil pool of the cylinder cover.

The oil return structure is usually formed by machining, and the oil return structure formed by machining has the problems of high cost and limitation of arrangement space of other parts. In addition, since the gasoline pump is disposed at one end of the cylinder head, the mode thereof is poor, and if the mode thereof is improved by using the reinforcing ribs, the weight of the cylinder head is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problem that prior art exists, providing a cylinder head assembly, this cylinder head assembly's processing cost is low, light in weight to its mode is better.

In order to achieve the above object, the present invention provides a cylinder head assembly, which includes a cylinder head body and a mounting seat, wherein the mounting seat is used for mounting a gasoline pump, the cylinder head body is of a cast structure, and the cylinder head body is provided with a first cavity, an oil return structure and an oil pool; the first chamber is communicated with the mounting seat and configured to accommodate a camshaft and an oil pump cam arranged on the camshaft; the oil return structure provides communication between the first chamber and the oil sump.

Optionally, a protruding portion is arranged on one side, away from the mounting seat, of the cylinder head body.

Optionally, a portion of the oil return structure is disposed in the protrusion.

Optionally, the oil return structure includes an oil return groove and an oil return passage, the oil return groove is communicated with the first chamber, one end of the oil return passage is communicated with the oil return groove, and the other end of the oil return passage is communicated with the oil sump; the oil return passage is at least partially disposed in the boss.

Optionally, the cylinder head body includes a first support journal and a second support journal for providing support to the camshaft, the first support journal and the second support journal being located on opposite sides of the oil pump cam, respectively.

Optionally, the oil sump is provided with an oil return hole communicated with the oil pan, and the first supporting journal and the second supporting journal are both provided with an oil feeding hole communicated with the oil pump.

Optionally, the cylinder head assembly includes a cylinder head cover openably and closably connected to the cylinder head body to expose or shield the first chamber, the oil return structure, and the oil sump; the cylinder cover is provided with a first oil guide groove and a second oil guide groove, and the first oil guide groove and the second oil guide groove correspond to the oil feeding holes in the first supporting shaft neck and the second supporting shaft neck respectively.

Optionally, the first oil guiding groove has a bending section bending towards the first cavity, and a part of the bending section corresponds to the first cavity.

Through above-mentioned technical scheme, the petrol pump is installed on the mount pad and by setting up oil pump cam drive work on the camshaft during the camshaft rotates, machine oil in the first cavity can flow in among the oil return structure, machine oil along the oil return structure backward flow extremely flow into in the oil sump and lie in the oil return hole in the oil sump, machine oil passes through the oil return hole flows to the oil pan rethread oil pump follow the last oilhole of the edge setting of first cavity is pumped out and is flowed in the first cavity realizes the circulation. Because the utility model discloses a cylinder head body is casting shaping structure, and its inside oil return structure is also by the casting shaping, consequently the utility model discloses an oil return structure compares in the oil return structure who adopts machine-shaping, has the advantage that the processing cost is low.

The utility model also provides an engine, the engine includes foretell cylinder head assembly.

The utility model also provides a vehicle, the vehicle includes foretell engine.

The engine, the vehicle and the cylinder head assembly have the same advantages compared with the prior art, and the detailed description is omitted.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

FIG. 1 is a schematic view of a cylinder head assembly of the present invention applied to an engine;

FIG. 2 is a schematic view of the cylinder head assembly of the present invention with the cylinder head body and cylinder head cover relatively open and showing the camshaft and the oil pump cam;

FIG. 3 is a schematic view of a perspective of the cylinder head assembly of the present invention;

FIG. 4 is a schematic view of another perspective of the cylinder head assembly of the present invention;

fig. 5 is a schematic cross-sectional view of an oil return structure of the cylinder head assembly according to the present invention.

Description of the reference numerals

100-cylinder head body, 110-first chamber, 111-oil feeding hole, 120-oil return structure, 121-oil return groove, 122-oil return channel, 130-oil pool, 131-oil return hole, 140-boss, 151-first support journal, 152-second support journal, 160-cylinder head cover, 161-first oil guide groove, 162-second oil guide groove, 200-mounting seat, 310-camshaft, 320-oil pump cam, 400-gasoline pump cam

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

As shown in fig. 1 to 5, the cylinder head assembly of the present invention includes a cylinder head body 100 and a mounting seat 200, the mounting seat 200 is used for mounting a gasoline pump 400, the cylinder head body 100 is a cast structure, and the cylinder head body 100 is provided with a first chamber 110, an oil return structure 120 and an oil pool 130; the first chamber 110 communicates with the mount 200 and is configured to be able to accommodate the camshaft 310 and an oil pump cam 320 provided on the camshaft 310; the oil return structure 120 provides communication between the first chamber 110 and the oil sump 130.

In the utility model discloses in, as shown in fig. 1 and fig. 2, the petrol pump 400 is installed on mount pad 200 and is driven by the oil pump cam 320 that sets up on camshaft 310 and works, when camshaft 310 rotates, the machine oil in first cavity 110 can flow into oil return structure 120, as shown in fig. 3, machine oil flows back to oil sump 130 along oil return structure 120 and flows into oil return hole 131 that is located oil sump 130, machine oil flows to the oil pan through oil return hole 131 and pumps from last oilhole 111 of the edge setting of first cavity 110 through the machine oil pump and flows into first cavity 110, realize the circulation. Because the utility model discloses a cylinder head body 100 is the casting shaping structure, and its inside oil return structure 120 is also by the casting shaping, consequently the utility model discloses an oil return structure 120 is compared in the oil return structure who adopts machine-shaping, has the advantage that the processing cost is low.

In order to further reduce the processing cost, in an embodiment of the present invention, the cylinder head body 100 and the mounting seat 200 are an integrally formed structure.

As shown in fig. 1 and 2, since the mount 200 protrudes from one side of the cylinder head body 100, and is of a cantilever-like structure, the mode of the cylinder head body 100 is not satisfactory. In order to solve this problem, in an embodiment of the present invention, as shown in fig. 3 and 4, a protrusion 140 is disposed on one side of the cylinder head body 100 away from the mounting seat 200, so that the connection rigidity between the mounting seat 200 and the cylinder head body 100 is increased, and the modal level of the cylinder head body 100 is further improved.

Further, since the oil return structure 120 is partially disposed in the protruding portion 140, and the oil return structure 120 has a chamber for oil to flow, the oil return structure 120 disposed inside the protruding portion 140 can make the protruding portion 140 hollow, and only the basic wall thickness is maintained, so as to achieve the purpose of weight reduction, and in addition, the protruding portion 140 of this embodiment can better enhance the modal level of the cylinder head body 100 compared to a solid reinforcement structure.

Specifically, as shown in fig. 5, the oil return structure 120 includes an oil return groove 121 and an oil return passage 122, the oil return groove 121 is communicated with the first chamber 110, one end of the oil return passage 122 is communicated with the oil return groove 121, and the other end is communicated with the oil sump 130; the oil return passage 122 is at least partially provided in the boss 140.

In order to better realize the oil return, in an embodiment of the present invention, as shown in fig. 5, the inner diameter of the oil return passage 122 gradually increases in the direction toward the oil pool 130, specifically, in this embodiment, the cross section of the oil return passage 122 is designed to be T-shaped, the short side of the oil return passage 122 is connected to the oil return groove 121, and the long side of the oil return passage 122 is gradually expanded toward the direction toward the oil pool 130, so that the oil return can be more reasonably organized.

In order to provide support to the camshaft 310 more effectively and stably, in an embodiment of the present invention, as shown in fig. 2, the cylinder head body 100 includes a first support journal 151 and a second support journal 152 for providing support to the camshaft 310, the first support journal 151 and the second support journal 152 are respectively located at opposite sides of the oil pump cam 320110, the camshaft 310 is mounted on the first support journal 151 and the second support journal 152 such that the oil pump cam 320 is located just in the first chamber 110. In addition, since the cylinder head body 100 is provided with the boss 140 protruding outward, the boss 140 provides a sufficient space to ensure the integrity of the first and

second support journals

151 and 152.

Specifically, the upper oil holes 111 are respectively provided on the first and

second support journals

151 and 152.

In order to better lubricate the first and second supporting

journals

151 and 152, in an embodiment of the present invention, as shown in fig. 2, the cylinder head assembly includes a cylinder head cover 160, the cylinder head cover 160 is openably and closably connected to the cylinder head body 100 to expose or shield the first chamber 110, the oil return structure 120 and the oil sump 130; the cylinder head cover 160 is provided with a first oil guide groove 161 and a second oil guide groove 162, and the first oil guide groove 161 and the second oil guide groove 162 correspond to the upper oil holes 111 of the first support journal 151 and the second support journal 152, respectively. Therefore, when the head cover 160 is closed, the oil can flow to the first and second

oil guide grooves

161 and 162 through the upper oil hole 111, respectively, thereby lubricating the first and

second support journals

151 and 152.

In order to perform splash lubrication on the oil pump cam 320, in an embodiment of the present invention, as shown in fig. 2, the first oil guide groove 161 has a bending section bending toward the first chamber 110, and a portion of the bending section corresponds to the first chamber 110. Thereby, the oil in the first oil guide groove 161 can enter the first chamber 110 through the bent section to splash-lubricate the oil pump cam 320.

Through the embodiment, the utility model discloses a cylinder head assembly has following advantage:

because the protruding part 140 is arranged on the side of the cylinder head body 100, which is far away from the mounting seat 200, the connecting rigidity of the mounting seat 200 and the cylinder head body 100 is increased, and the modal level of the cylinder head body 100 is further improved.

The oil return passage 122 is disposed in the boss 140, so that the boss 140 is hollowed, only the basic wall thickness is maintained, the weight reduction purpose is achieved, and the modal level of the cylinder head body 100 can be improved.

By the integrated design of the oil return passage 122 and the boss 140, and by designing the oil return passage 122 such that the inner diameter thereof gradually increases in the direction toward the oil sump 130, the flow area of the oil return passage 122 is increased.

The utility model discloses an oil return structure of cylinder head body 100 is the casting shaping to cylinder head body 100 and mount pad 200 formula casting shaping as an organic whole, greatly reduced the processing cost.

The utility model also provides an engine, this engine include foretell cylinder head assembly.

The utility model also provides a vehicle, this vehicle includes foretell engine.

The utility model discloses an engine, vehicle are the same with the advantage that above-mentioned cylinder head assembly had for prior art, no longer describe herein.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide a solution of the present invention with a plurality of simple modifications to avoid unnecessary repetition, and the present invention is not described separately for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A cylinder head assembly, characterized in that it comprises a cylinder head body (100) and a mounting seat (200), said mounting seat (200) being intended for mounting a gasoline pump (400), said cylinder head body (100) being provided with a first chamber (110), an oil return structure (120) and an oil sump (130);

the first chamber (110) communicates with the mount (200) and is configured to be able to accommodate a camshaft (310) and an oil pump cam (320) provided on the camshaft (310);

the oil return structure (120) provides communication between the first chamber (110) and the oil sump (130).

2. The cylinder head assembly according to claim 1, characterized in that a side of the cylinder head body (100) facing away from the mounting seat (200) is provided with a projection (140).

3. The cylinder head assembly according to claim 2, wherein a portion of the oil return structure (120) is disposed in the boss (140).

4. The cylinder head assembly according to claim 3, wherein the oil return structure (120) comprises an oil return groove (121) and an oil return passage (122), the oil return groove (121) is communicated with the first chamber (110), one end of the oil return passage (122) is communicated with the oil return groove (121), and the other end is communicated with the oil sump (130); the oil return passage (122) is at least partially disposed in the boss (140).

5. The cylinder head assembly according to any one of claims 1 to 4, characterized in that the cylinder head body (100) comprises a first support journal (151) and a second support journal (152) for providing support to the camshaft (310), the first support journal (151) and the second support journal (152) being located on opposite sides of the oil pump cam (320), respectively.

6. The cylinder head assembly according to claim 5, wherein the oil sump (130) is provided with an oil return hole (131) communicating with an oil pan, and the first support journal (151) and the second support journal (152) are each provided with an oil feed hole (111) communicating with an oil pump.

7. The cylinder head assembly according to claim 6, characterized in that it comprises a cylinder head cover (160), the cylinder head cover (160) being openably connected to the cylinder head body (100) so as to be able to expose or shield the first chamber (110), the oil return structure (120) and the oil sump (130); the cylinder head cover (160) is provided with a first oil guide groove (161) and a second oil guide groove (162), and the first oil guide groove (161) and the second oil guide groove (162) correspond to the upper oil holes (111) in the first support journal (151) and the second support journal (152), respectively.

8. The cylinder head assembly according to claim 7, wherein the first oil guide groove (161) has a bent section bent in a direction of the first chamber (110), a portion of the bent section corresponding to the first chamber (110).

9. An engine comprising the cylinder head assembly of any one of claims 1-8.

10. A vehicle characterized by comprising the engine of claim 9.