CN203488271U - Integrated natural gas engine cylinder head cover assembly - Google Patents

Abstract

The utility model discloses an integral cylinder head cover assembly of a natural gas engine, which comprises a cylinder cover, an oil seal, an ignition coil bushing and a combined gasket, the cylinder head cover is provided with an installation hole for the ignition coil bushing, the The inner and outer surfaces of the oil seal are provided with multiple lip-shaped sealing flanges, the outer surface of the oil seal is sealed with the installation hole of the ignition coil bushing of the cylinder head cover, the inner surface of the oil seal is sealed with the ignition coil bushing, and the combined gasket realizes the cylinder The seal between the cover and the cylinder head; the main part of the oil seal is composed of a steel plate skeleton and elastic rubber, the middle layer of the combined gasket is a hard low-carbon steel plate, and the upper and lower layers are foam rubber. The utility model adopts a multi-lip oil seal design, which can compensate for the flatness processing deviation of the ignition coil bushing installation hole, is easy to install and realizes effective sealing; the use of a combined gasket can solve the problem of using paper pads for the integral cylinder head cover, and the flatness compensation is small. Very prone to the problem of lubricating oil leakage.

Description

An integral natural gas engine cylinder head cover assembly

technical field

The utility model relates to an integral natural gas engine cylinder head cover assembly, which belongs to the technical field of automobiles. the

Background technique

The large-displacement natural gas engine in the prior art generally adopts a single-cylinder single-head design. The ignition coil bushing and the cylinder head cover are sealed with an O-ring, and the cylinder head cover and the cylinder head are sealed with a paper pad. If the integral cylinder head cover adopts the same sealing scheme, it is difficult to ensure the flatness of the plane where the axis of the ignition coil installation hole is processed, and the contact sealing surface between the cylinder head cover and the cylinder head is too large, it is easy to have difficulty in assembling the cylinder head cover, and the lubricating oil Leakage etc. the

Contents of the invention

The technical problem to be solved by the utility model is to provide an integral natural gas engine cylinder head cover assembly for the deficiency of the prior art cylinder head cover sealing scheme. the

In order to solve this technical problem, the utility model provides an integral natural gas engine cylinder head cover assembly, including a cylinder head cover, an oil seal, an ignition coil bushing and a combination gasket, and the cylinder head cover is provided with an ignition coil The bushing installation hole, the inner and outer surfaces of the oil seal are provided with multiple lip-shaped sealing flanges, the outer surface of the oil seal and the ignition coil bushing installation hole on the cylinder head cover realize sealing, the inner surface of the oil seal and the ignition coil The bushing realizes the sealing, and the combined gasket realizes the sealing between the cylinder head cover and the cylinder head. the

The main part of the oil seal is composed of a steel plate frame and elastic rubber, the steel plate frame and elastic rubber are vulcanized into one, and the lip-shaped sealing flange is arranged on the elastic rubber on the inner and outer surfaces of the oil seal. the

The combined gasket has a three-layer structure, the middle layer is a hard low-carbon steel plate, and the upper and lower layers are foamed rubber, and the hard low-carbon steel plate and the foamed rubber are vulcanized as one. the

Beneficial effects: the utility model adopts a multi-lip oil seal design to realize the sealing between the cylinder head cover and the ignition coil bushing, which can compensate for the flatness processing deviation of the ignition coil bushing installation hole, is easy to install and realizes effective sealing; the combined gasket is adopted It can solve the problem that the integral cylinder head cover uses a paper pad, the flatness compensation is small, and the lubricating oil leakage is very easy to occur. the

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2a is a schematic structural view of the utility model oil seal;

Figure 2b is a schematic cross-sectional view of the utility model oil seal;

Fig. 3 is a schematic cross-sectional view of the gasket of the present invention.

In the figure: 1 cylinder head cover, 2 oil seal, 3 ignition coil bushing, 4 combined gasket, 5 installation hole of ignition coil bushing, 6 lip-shaped sealing flange, 7 steel plate skeleton, 8 elastic rubber, 9 foam rubber, 10 hard low carbon steel plate. the

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail. the

Shown in Fig. 1 is the structural representation of the utility model. the

The utility model comprises a cylinder head cover 1, an oil seal 2, an ignition coil bushing 3 and a combined gasket 4. the

The cylinder head cover 1 is provided with an ignition coil bushing installation hole 5, and the inner and outer surfaces of the oil seal 2 are provided with multiple lip-shaped sealing flanges 6, and the outer surface of the oil seal 2 and the cylinder head cover 1 The ignition coil bushing installation hole 5 is sealed, and the inner surface of the oil seal 2 is sealed with the ignition coil bushing 3. The existence of the lip-shaped sealing flange 6 can compensate for the axis plane of the ignition coil bushing installation hole 5 on the cylinder head cover 1. Precision processing deviation, while easy to install, realize the sealing of each contact surface. the

The combined gasket 4 realizes the sealing between the cylinder head cover 1 and the cylinder head. The seal between the cylinder head cover and the cylinder head adopts a combined gasket, which makes use of its large elastic deformation feature to make up for the shortage of the paper gasket that is prone to leakage due to the large sealing surface. the

Figure 2a is a schematic structural view of the oil seal of the present invention. the

Fig. 2b is a schematic cross-sectional view of the oil seal of the present invention. the

The main part of the oil seal 2 is composed of a steel plate frame 7 and an elastic rubber 8, the steel plate frame 7 and the elastic rubber 8 are vulcanized into one, and the elastic body of the oil seal 2 itself can compensate for the flatness of the ignition coil bushing installation hole 5. Deviation, easy to install and can achieve effective sealing. the

The lip-shaped sealing flange 6 is arranged on the elastic rubber 8 on the inner and outer surfaces of the oil seal 2 . the

Figure 3 is a schematic cross-sectional view of the gasket of the present invention. the

The combined gasket 4 has a three-layer structure, the middle layer is a hard low-carbon steel plate 8, the upper and lower layers are foam rubber 9, the hard low-carbon steel plate 8 and the foam rubber 9 are vulcanized as one, and the hard low-carbon steel plate 8 Playing the role of supporting the skeleton, the foam rubber 9 can compensate the flatness of a large-area sealing surface due to its own elasticity, so as to realize effective sealing between the cylinder head cover 1 and the cylinder head. the

The utility model adopts the multi-lip oil seal design to realize the sealing between the cylinder head cover and the ignition coil bushing, which can compensate for the flatness processing deviation of the ignition coil bushing installation hole, is easy to install and realizes effective sealing; the combination gasket can solve the overall The type cylinder head cover uses a paper pad, and the flatness compensation is small, and the problem of lubricating oil leakage is very easy to occur. the

The above-mentioned embodiments of the utility model are only examples, not the only ones, and all changes within the scope of the utility model or equivalent to the scope of the utility model are surrounded by the utility model. the

Claims (3)

1. An integral natural gas engine cylinder head cover assembly, characterized in that it includes a cylinder head cover (1), an oil seal (2), an ignition coil bushing (3) and a combined gasket (4), the cylinder head The cover (1) is provided with an ignition coil bushing installation hole (5), and the inner and outer surfaces of the oil seal (2) are provided with multiple lip-shaped sealing flanges (6), and the outer surface of the oil seal (2) is in contact with The ignition coil bushing installation hole (5) on the cylinder head cover (1) realizes sealing, the inner surface of the oil seal (2) and the ignition coil bushing (3) realize sealing, and the combined gasket (4) realizes the sealing of the cylinder head cover (1 ) and the seal between the cylinder head. 2. The integral natural gas engine cylinder head cover assembly according to claim 1, characterized in that: the main part of the oil seal (2) is composed of a steel plate frame (7) and elastic rubber (8), and the steel plate frame (7) is vulcanized together with the elastic rubber (8), and the lip-shaped sealing flange (6) is arranged on the elastic rubber (8) on the inner and outer surfaces of the oil seal (2). 3. The integral natural gas engine cylinder head cover assembly according to claim 1 or 2, characterized in that: the combined gasket (4) has a three-layer structure, the middle layer is a hard low-carbon steel plate (8), and the upper and lower The two layers are foamed rubber (9), and the hard low-carbon steel plate (8) is vulcanized with the foamed rubber (9).

Images