Cylinder head cover assembly

Abstract

The present invention discloses a cylinder head cover assembly, comprising a cover body, wherein a first accommodating cavity and a second accommodating cavity are respectively arranged on both sides of the cover body, a reinforcing partition plate is arranged between the first accommodating cavity and the second accommodating cavity, a plurality of oil return grooves are arranged on the reinforcing partition plate, an annular flange is arranged at the edge of the bottom of the cover body, and a sealing ring groove arranged around the first accommodating cavity and the second accommodating cavity is arranged on the end surface of the annular flange. The cylinder head cover assembly of the present invention belongs to the technical field of cylinder head covers, and a high-pressure common rail pipe can be arranged inside the cover body, thereby reducing the side hole arrangement of the high-pressure oil pipe and the cover body of the cylinder head cover, reducing the sealing structure there, and reducing the probability of oil leakage.

Description

Technical Field

[0001] The present invention relates to a cylinder head cover technology, and more particularly to a cylinder head cover assembly. Background Art

[0002] As the sealing shell of the valve chamber, the plastic cylinder head cover assembly has the characteristics of high manufacturing productivity and good appearance. In recent years, it has also been used in National VI diesel engines.

[0003] Although this type of cylinder head cover made of plastic is easy to mold by injection molding, sometimes, because the high-pressure common rail pipe is arranged on the side of the engine, it is necessary to open multiple through holes on the side wall of the plastic cylinder head cover to install the high-pressure oil pipe. This puts higher requirements on the seal between the plastic cylinder head cover and the high-pressure oil pipe. Since the plastic cylinder head cover and the oil pipe generate certain vibrations during operation, the outer cylindrical surface of the oil seal and the oil seal hole of the plastic cylinder head cover are interference fit, and the lateral core pulling of the injection mold has a certain draft angle, the oil seal fails. Summary of the invention

[0004] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art, and an object of the present invention is to provide a cylinder head cover assembly.

[0005] To achieve the above-mentioned objectives, the present invention provides a cylinder head cover assembly, including a cover body, wherein a first accommodating cavity and a second accommodating cavity are respectively provided on both sides of the cover body, a reinforcing partition plate is provided between the first accommodating cavity and the second accommodating cavity, a plurality of oil return grooves are provided on the reinforcing partition plate, an annular flange is provided on the edge of the bottom of the cover body, and a sealing ring groove is provided on the end face of the annular flange surrounding the first accommodating cavity and the second accommodating cavity.

[0006] Furthermore, a first nail hole is provided on the annular flange at the outer side of the sealing ring groove.

[0007] Furthermore, a plurality of mounting brackets are evenly arranged on the reinforced partition plate, and the mounting brackets are provided with second nail holes that pass through the top wall of the cover body.

[0008] Furthermore, a positioning groove is provided on the periphery of the top of the opening of the second nail hole.

[0009] Furthermore, the oil return groove is an arc-shaped groove arranged at the bottom end of the reinforced partition plate.

[0010] Furthermore, an oil filling cap adapted to the first accommodating cavity is provided at one end of the top of the cover body.

[0011] Furthermore, the first accommodating cavity and the second accommodating cavity in the cover body are square cavities, the first accommodating cavity corresponds to the valve structure on the cylinder head, and the second accommodating cavity corresponds to the high-pressure common rail pipe on the cylinder head.

[0012] Furthermore, a high-pressure oil pipe transition joint is provided at the bottom of one side of the cylinder head, and the high-pressure common rail pipe is installed inside the second accommodating cavity and can be connected to the interface at the top of the high-pressure oil pipe transition joint.

[0013] Beneficial Effects

[0014] Compared with the prior art, the cylinder head cover assembly of the present invention has the following beneficial effects: the cylinder head cover assembly of the present invention can arrange the high-pressure common rail pipe inside the cover body, reduce the side hole setting for connecting the high-pressure oil pipe and the cover body of the cylinder head cover, reduce the sealing structure therein, and reduce the probability of oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural front view of a cylinder head cover assembly of the present invention;

[0016] Figure 2 is a structural top view of a cylinder head cover assembly of the present invention;

[0017] Figure 3 yes Figure 2 Structural cross-section view in the AA direction;

[0018] Figure 4 It is a structural front view of the cylinder head cover assembly and the cylinder head of the present invention;

[0019] Figure 5 yes Figure 4 Structural cross-section view in the middle BB direction;

[0020] Figure 6 It is a structural cross-sectional view of the oil filling cap in the present invention;

[0021] Figure 7 It is a schematic diagram of the structure of the sealing gasket in the present invention;

[0022] Figure 8 It is a main structural sectional view of the cover body of the present invention;

[0023] Fig. 9 is a side structural sectional view of the cover body of the present invention;

[0024] Fig.10 It is a bottom view of the structure of the cover body in the present invention.

[0025] In the figure: 1, cover body; 2, first accommodating chamber; 3, second accommodating chamber; 4, reinforced partition plate; 5, oil return groove; 6, annular flange; 7, sealing ring groove; 8, sealing ring groove; 9, first nail hole; 10, mounting bracket; 11, second nail hole; 12, positioning groove; 13, oil filling cap; 14, cylinder head; 15, high-pressure common rail pipe; 16, high-pressure oil pipe transition joint; 17, annular groove; 18, sealing gasket. DETAILED DESCRIPTION

[0026] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0027] The specific implementation of the present invention is as follows: Figure 1-10 As shown, a cylinder head cover assembly includes a cover body 1, a first accommodating cavity 2 and a second accommodating cavity 3 are respectively provided on both sides of the cover body 1, a reinforcing partition plate 4 is provided between the first accommodating cavity 2 and the second accommodating cavity 3, a plurality of oil return grooves 5 are provided on the reinforcing partition plate 4, an annular flange 6 is provided on the edge of the bottom of the cover body 1, a sealing ring groove 7 arranged around the first accommodating cavity 2 and the second accommodating cavity 3 is provided on the end surface of the annular flange 6, and a sealing gasket 18 is provided on the sealing ring groove 7.

[0028] In the cylinder head cover assembly, a first accommodating chamber 2 and a second accommodating chamber 3 are arranged inside the cover body 1 of the cylinder head cover. The first accommodating chamber 2 and the second accommodating chamber 3 in the cover body 1 are square chambers. The first accommodating chamber 2 corresponds to the valve structure on the cylinder head 14, and the second accommodating chamber 3 corresponds to the high-pressure common rail pipe 15 on the cylinder head 14, that is, the high-pressure common rail pipe 15 is arranged in the cover body 1, the side hole setting for connecting the high-pressure oil pipe and the cover body 1 of the cylinder head cover is reduced, the sealing structure therein is reduced, and the probability of oil leakage can be reduced.

[0029] A reinforcing partition plate 4 is provided in the cover body 1 to separate the first accommodating chamber 2 from the second accommodating chamber 3, thereby playing a reinforcing role. Moreover, a plurality of oil return grooves 5 are provided on the reinforcing partition plate 4, so that the oil and gas in the second accommodating chamber 3 can flow into the first accommodating chamber 2, and then return the oil from the oil return port located at the first accommodating chamber 2 on the cylinder head 14, thereby preventing the oil and gas from diffusing into the external engine compartment.

[0030] A sealing ring groove 7 is provided on the annular flange 6 at the bottom of the cover body 1, which can effectively prevent leakage of oil and gas molecules and ensure tight connection. The annular flange 6 and the sealing gasket 18 cooperate with the upper surface of the cylinder head valve chamber to form a closed sealing ring.

[0031] In this embodiment, a first nail hole 9 is provided on the annular flange 6 at the outer side of the sealing ring groove 7 , and a bolt structure passes through the first nail hole 9 to be locked with the cylinder head 14 .

[0032] In this embodiment, a plurality of mounting brackets 10 are evenly arranged on the reinforcing partition plate 4, and a second nail hole 11 is provided on the mounting bracket 10 and is arranged through the top wall of the cover body 1. The second nail hole 11 corresponds to the screw hole in the middle of the top of the cylinder head, and can be connected to the cylinder head 14 through the second nail hole 11 by a bolt structure, so as to ensure that the cover body 1 and the cylinder head 14 are firmly connected.

[0033] In this embodiment, a positioning groove 12 is arranged at the periphery of the top of the opening of the second nail hole 11, and the cross section of the positioning groove 12 is rectangular. A sealing pad is arranged on the positioning groove 12 to play the role of shock absorption, loosening prevention and sealing.

[0034] In this embodiment, the oil return groove 5 is a curved groove disposed at the bottom end of the reinforced partition plate 4 .

[0035] In this embodiment, an oil filling cap 13 adapted to the first accommodating chamber 2 is provided at one end of the top of the cover body 1. The oil filling cap 13 is a threaded screw plug made of a lightweight material. Two annular grooves 17 are provided on the bottom surface of the brim of the oil filling cap 13, and two annular protrusions are provided at the oil filling port on the top of the cover body 1. After the oil filling cap 13 is installed at the oil filling port through threads, the annular grooves 17 cooperate with the annular protrusions to form a circuitous channel, which effectively prevents oil and gas leakage.

[0036] In this embodiment, a high-pressure oil pipe transition joint 16 is provided at the bottom of one side of the cylinder head 14, the high-pressure common rail pipe 15 is installed inside the second accommodating chamber 3 and can be connected to the interface at the top of the high-pressure oil pipe transition joint 16, the oil supply pipe is connected to the high-pressure oil pipe transition joint 16, the high-pressure common rail pipe 15 is connected to the high-pressure oil pipe transition joint 16 through a pipeline or other structure, and the oil supply pipe supplies oil to the high-pressure common rail pipe 15.

[0037] The above are only preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A cylinder head cover assembly, comprising a cover body (1), characterized in that: A first accommodating chamber (2) and a second accommodating chamber (3) are respectively provided on two sides of the cover body (1); a reinforcing partition plate (4) is provided between the first accommodating chamber (2) and the second accommodating chamber (3); a plurality of oil return grooves (5) are provided on the reinforcing partition plate (4); an annular flange (6) is provided on the edge of the bottom of the cover body (1); a sealing ring groove (7) is provided on the end surface of the annular flange (6) and is arranged around the first accommodating chamber (2) and the second accommodating chamber (3); a first nail hole (9) is provided on the annular flange (6) and is located outside the sealing ring groove (7); a plurality of mounting brackets (10) are evenly arranged on the reinforcing partition plate (4); a second mounting bracket (10) is provided on the mounting bracket (10) and is arranged to pass through the top wall of the cover body (1); The nail hole (11) is provided in the oil return groove (5) as an arcuate groove provided at the bottom end of the reinforced partition plate (4); an oil filling cap (13) adapted to the first accommodating chamber (2) is provided at one end of the top of the cover body (1); the first accommodating chamber (2) and the second accommodating chamber (3) in the cover body (1) are square chambers; the first accommodating chamber (2) corresponds to the valve structure on the cylinder head (14); the second accommodating chamber (3) corresponds to the high-pressure common rail pipe (15) on the cylinder head (14); a high-pressure oil pipe transition joint (16) is provided at the bottom of one side of the cylinder head (14); the high-pressure common rail pipe (15) is installed inside the second accommodating chamber (3) and can be connected to an interface at the top end of the high-pressure oil pipe transition joint (16).

2. A cylinder head cover assembly according to claim 1, characterized in that: A positioning groove (12) is provided on the periphery of the top end of the opening of the second nail hole (11).

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