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Diesel engine cylinder head cover

A cylinder head cover, diesel engine technology, applied in the direction of mechanical equipment, engine components, machines/engines, etc., can solve problems such as assembly difficulties, oil leakage, oil leakage, etc., achieve simple and reasonable structure, reduce processing and assembly requirements, and improve sealing reliability effect

Active Publication Date: 2013-11-27
GUANGXI YUCHAI MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-pressure oil pipe of the existing fuel injector is installed in the injector installation through hole of the cylinder head cover through the sleeve nut of the high-pressure oil pipe. The radial tight fitting seal is used between the cylinder head cover and the sealing ring. This sealing method requires high assembly coaxiality between the cylinder head cover and the sealing ring, which is difficult to assemble, and oil leakage will occur if there is a slight deviation. In addition, the cylinder head cover cannot Fits tightly with the sealing ring to allow oil to leak

Method used

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  • Diesel engine cylinder head cover
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Embodiment Construction

[0016] A specific embodiment of the present invention will be 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 embodiment. It should be understood that the "upper", "lower", "left", "right", "front" and "reverse" mentioned in the following embodiments of the present invention are all based on the directions shown in the figures, These words used to limit the direction are only for convenience of description, and do not mean to limit the specific technical solution of the present invention.

[0017] The diesel engine cylinder head cover of the present invention has a simple and reasonable structure, and improves the radial tight fitting seal between the sleeve nut of the high-pressure oil pipe and the installation through hole of the fuel injector into an end face seal, which reduces the processing and assembly requirements and improves the sealin...

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Abstract

The invention discloses a diesel engine cylinder head cover. The diesel engine cylinder head cover comprises a cylinder head cover body, an oil sprayer installation through hole and a cylinder head cover gasket seal positioning groove, wherein the cylinder head cover body is arranged on a cylinder head in a covering mode through an installation flange at the bottom of the cylinder head cover body; the oil sprayer installation through hole is of a big-end-up stepped hole structure and comprises an upper installation countersunk groove and a lower sleeve nut penetrating hole, and a high-pressure oil pipe seal ring is in clearance fit with the sleeve nut penetrating hole and forms end face seal with the connection stepped face of the installation countersunk groove and the sleeve nut penetrating hole; the cylinder head cover gasket seal positioning groove is formed in the face of the installation flange of the cylinder head cover body. The diesel engine cylinder head cover is simple and reasonable in structure; due to the fact that radial close fit seal between a high-pressure oil pipe sleeve nut and the oil sprayer installation through hole is improved to end face seal, processing and assembling requirements are lowered, and seal reliability is improved.

Description

technical field [0001] The invention relates to the field of engines, in particular to a diesel engine cylinder head cover. Background technique [0002] The cylinder head cover is used to protect the internal parts of the cylinder head from pollution damage and prevent oil and gas leakage. The high-pressure fuel pipe of the existing fuel injector is installed in the fuel injector installation through hole of the cylinder head cover through the high-pressure fuel pipe sleeve nut, and the high-pressure fuel pipe seal ring is set outside the high-pressure fuel pipe sleeve nut, between the high-pressure fuel pipe sleeve nut and the fuel injector installation through hole. The radial tight fitting seal is used between the cylinder head cover and the sealing ring. This sealing method requires high assembly coaxiality between the cylinder head cover and the sealing ring, and the assembly is difficult. Oil leakage will occur if there is a slight deviation, and the cylinder head cov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F7/00F02F11/00
Inventor 包向东张振平任武超向本杰梁德浦王羽
Owner GUANGXI YUCHAI MASCH CO LTD
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