A kind of engine cylinder head gasket

Abstract

The invention discloses an engine cylinder head gasket, which comprises a cylinder head gasket body, a timing sprocket box sealing gasket is integrated on the cylinder head gasket body, and a cylinder head gasket body is provided for storing The sealant forms a reservoir in the sealing area. The body of the cylinder head gasket is provided with two inner and outer rings of sealing ribs, and the rubber storage tank is formed by the inner and outer rings of sealing ribs. Under the joint action of bolt pretightening force, sealing rib and sealant, it can effectively ensure the sealing of the joint surface of cylinder block, cylinder head and timing sprocket case cover, improve the sealing effect of the gasket, and the gasket structure is simple, Easy to manufacture and low cost.

Description

technical field [0001] The invention relates to the technical field of engine sealing, in particular to an engine cylinder head gasket. Background technique [0002] The engine cylinder head gasket is located between the engine cylinder head and the cylinder block, and plays the role of sealing the gas in each cylinder of the engine, the coolant in the water jacket, and the oil in the oil passage. The flow rate and pressure also have a certain influence. By adjusting the diameter of the coolant hole of the cylinder head gasket, the flow rate and velocity of the coolant in the cylinder head water jacket can be changed, and the flow direction of the coolant can be changed. The working environment of the cylinder head gasket is poor, especially around the cylinder bore. In addition to being affected by high temperature and high pressure gas, the cylinder head gasket is also scoured and eroded by the coolant near the water holes of the water jacket. The working environment is ve...

AI Technical Summary

Problems solved by technology

Because the material of the cylinder block is cast iron or gravity cast aluminum, and the cover of the timing sprocket case is made of die-cast aluminum, the structure of the cover of the timing sprocket case of die-cast aluminum is much lighter than the structure of the integrated timing sprocket case of the cylinder block; but Because the cylinder block and the cover of the timing sprocket case are two separate parts, steps will be formed on the sealing surface where the two parts meet during assembly, resulting in a height difference. Higher requirements are put forward for the sealing between the cylinder block and the cylinder head. The existing cylinder head gasket structure has higher requirements on the flatness of the matching parts, and it is difficult to meet the sealing requirements of the steps formed by the assembly of two parts.

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