Sealing gasket for cylinder head cover

Abstract

The invention provides a sealing gasket of a cylinder head cover. The cross section of the sealing gasket is in a T shape, at least two mutually parallel enclosed sealing convex ribs are arranged along the length direction of the sealing gasket and on the binding face of the upper part of the sealing gasket and a cylinder head, three parallel oil storage tanks are arranged at the two sides and between the two sides of the sealing convex ribs, so that the compressibility of the sealing gasket is ensured, the oil flows into the oil storage tanks, and the oil can not leak out from a cylinder cover and the cylinder head. A group of vertical long-arc strip-type bosses are arranged at the two sides of the waist-shaped part of the cross section of the sealing gasket and are in interference fit with the sealing groove of the cylinder cover, thus when the sealing gasket is preassembled, the sealing gasket can be fixed in the groove to improve the sealing reliability. The sealing gasket of the cylinder head cover can ensure reliable sealing between the cylinder head cover and the cylinder head which are arranged on a high-performance supercharger engine, thereby improving the service life of the product, simultaneously being favorable for assembly and improving the efficiency.

Description

technical field [0001] The invention belongs to the technical field of gasoline engines, and in particular relates to an engine cylinder head cover gasket for sealing between a multi-valve cylinder head cover and the cylinder head. Background technique [0002] At present, the requirements for engines in automobiles are getting higher and higher, and the sealing aspect plays a very important role. Poor sealing will not only affect engine performance, increase fuel consumption, but also affect appearance. It cannot meet environmental protection requirements and virtually reduces customer satisfaction. . [0003] Existing engine cylinder head covers are generally designed with a T-shaped cross-sectional structure, which can basically meet the general sealing requirements. It is difficult to meet the sealing requirements. [0004] figure 1 It is an existing automobile engine cylinder head gasket structure, mainly made of acrylic rubber material, and designed for a T-shaped s...

AI Technical Summary

Problems solved by technology

Three parallel closed sealing ribs 41 are arranged on the joint surface of the cylinder head cover gasket 4 and the cylinder head. It will lead to the leakage of engine oil; the middle part of the left and right sides of the gasket has a semicircular limit boss 42, which has a certain interference fit with the sealing groove of the cylinder cover 1, but the gasket of this structure is installed in the cylinder cover 1 When it is pressed onto the cylinder head 3 by the bolt torque, the gasket is easy to be distorted and deformed, so that the oil leaks from the cylinder head

In addition, the cross-section of the lower end 43 of the gasket is square. When the gasket is compressed, the lower end does not have enough expansion and contraction space at the bottom of the cylinder cover groove, and it is easy to be crushed and cause oil leakage.

In addition, the acrylic rubber used is less resistant to low temperature and long-term compression permanent deformation, which reduces the life of the gasket and deteriorates the sealing reliability.

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