CN211524965U - A natural gas engine cylinder head cover assembly - Google Patents

Abstract

The utility model aims to solve the problem of providing a natural gas engine cylinder head cover assembly, which enables the cylinder head cover to be well sealed on a cylinder cover and prevents lubricating oil from leaking, and comprises a cylinder head cover, a cylinder cover and a plurality of ignition coil assemblies; the cylinder head cover is hermetically arranged at the upper end of the cylinder head through a sealing gasket assembly, and the ignition coil assemblies are hermetically arranged on the cylinder head cover through oil seal assemblies.

Description

A natural gas engine cylinder head cover assembly

technical field

The utility model relates to a natural gas engine, in particular to a natural gas engine cylinder head cover assembly.

Background technique

Natural gas engines generally use a single-cylinder and 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 gasket. If the same sealing scheme is adopted for the integral cylinder head cover, the flatness of the plane where the axis of the machining ignition coil installation hole is located is difficult to ensure, and the contact sealing surface between the cylinder head cover and the cylinder head is too large, which will easily lead to difficulties in the assembly of the cylinder head cover and lubricating oil. leaks, etc.

Utility model content

The problem to be solved by the utility model is to provide a cylinder head cover assembly of a natural gas engine, so that the cylinder head cover can be well sealed on the cylinder head and prevent the leakage of lubricating oil.

The utility model is achieved through the following technical solutions:

A cylinder head cover assembly of a natural gas engine, comprising a cylinder head cover, a cylinder head and a plurality of ignition coil assemblies;

The cylinder head cover is sealedly mounted on the upper end of the cylinder head through a gasket assembly, and the plurality of ignition coil assemblies are sealed and installed on the cylinder head cover through an oil seal assembly.

Further, the oil seal assembly is a lip-shaped sealing ring, the ignition coil assembly includes an ignition coil and a bushing, and the lip-shaped sealing ring is sleeved on the upper end of the bushing and sealed with the cylinder head cover.

Further, the sealing gasket assembly includes a sealing groove and a sealing gasket, the sealing groove is provided on the lower end surface of the cylinder head cover, and the sealing gasket is embedded in the groove.

Compared with the prior art, the beneficial effects obtained by the present utility model are as follows:

The rubber lip oil seal design is adopted to realize the sealing between the cylinder head cover and the ignition coil bushing, which can make up for the machining deviation of the flatness of the installation hole of the ignition coil bushing, which is easy to install and achieve effective sealing; It can solve the problem that the flatness compensation of the integrated cylinder head cover using the paper pad is small, and the leakage of lubricating oil is very easy to occur.

Description of drawings

Fig. 1 is the general three-dimensional structure schematic diagram of the natural gas engine cylinder head cover according to the utility model;

FIG. 2 is a schematic diagram of the matching installation of the ignition coil and the oil seal assembly according to the present invention;

Figure 3 is a schematic cross-sectional view of the lip-shaped sealing ring of the present invention;

4 is a schematic diagram of the matching structure of the gasket assembly according to the present invention;

In the picture: 1. Cylinder head cover, 2. Cylinder head, 3. Sealing groove, 4. Gasket, 5. Lip seal, 6. Bushing, 7. Ignition coil, 8. Elastic rubber, 9. Skeleton , 10, spring.

Detailed ways

In order to make the purpose, technical solutions and beneficial effects of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to make the purpose, technical solutions and beneficial effects of the present utility model clearer, and the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

As shown in Figures 1-4, a natural gas engine cylinder head cover assembly mainly includes a cylinder head cover 1, a cylinder head 2 and a plurality of ignition coil assemblies. The lower end surface of the cylinder head cover 1 is machined with a sealing groove 3, and a sealing gasket 4 is embedded in the sealing groove 3, and then the cylinder head cover 1 is fixedly connected to the cylinder head 2 with a bolt assembly, and the previous sealing paper is replaced by a sealing gasket , which can solve the problem that the flatness compensation of the integrated cylinder head cover using the paper pad is small, and the oil leakage is very easy to occur. Each ignition coil assembly is sealingly mounted on the cylinder head cover 1 through an oil seal assembly, the oil seal assembly is a lip seal 5, the ignition coil assembly includes an ignition coil 7 and a bushing 6, and the lip seal 5 sets It is installed on the upper end of the bushing 6 to be sealed and installed with the cylinder head cover 1 . The inner and outer surfaces of the lip seal 5 are designed with lip seal flanges. The main body is composed of elastic rubber 8, a skeleton 9 and a spring 10. The elastic body and spring of the lip seal 5 itself can compensate for the installation hole of the ignition coil bushing. Flatness machining deviation, easy installation and effective sealing.

Claims (3)

1. A natural gas engine cylinder head cover assembly, characterized in that, comprising a cylinder head cover, a cylinder head and a plurality of ignition coil assemblies; The cylinder head cover is sealedly mounted on the upper end of the cylinder head through a gasket assembly, and the plurality of ignition coil assemblies are sealed and installed on the cylinder head cover through an oil seal assembly. 2 . The natural gas engine cylinder head cover assembly according to claim 1 , wherein the oil seal assembly is a lip seal, the ignition coil assembly comprises an ignition coil and a bushing, and the lip seal is sleeved. 3 . The upper end of the bushing is sealed and installed with the cylinder head cover. 3 . The natural gas engine cylinder head cover assembly according to claim 1 , wherein the gasket assembly comprises a sealing groove and a sealing gasket, and the sealing groove is provided on the lower end surface of the cylinder head cover, so the The gasket is embedded in the groove.

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