Fully enclosed internal circulation water cooling structure of motorcycle water cooling engine

Abstract

The invention discloses a whole-sealing internal circulation water cooling structure of a motorcycle water-cooled engine. The whole-sealing internal circulation water cooling structure comprises a cylinder body and a cylinder head, the cylinder body and the cylinder head are provided with cooling water channels communicated with each other, the cylinder head is provided with the upper half portion of a combustion chamber, the cylinder body is provided with the lower half portion of the combustion chamber, the combustion chamber is surrounded by the cooling water channels in the cylinder body and the cylinder head, the combined faces of the cylinder head and the cylinder body are sealed through an annular sealing gasket and are provided with annular grooves respectively, the annular groove in the cylinder body is located between the lower half portion of the combustion chamber and the cooling water channel in the cylinder body, the annular groove in the cylinder head is located between the upper half portion of the combustion chamber and the cooling water channel in the cylinder head, and a gas release hole is formed in the groove bottom of the annular groove in the cylinder body and extends out of the cylinder body. The whole-sealing internal circulation water cooling structure further comprises a gas release pipe, one end of the gas release pipe is inserted in the annular groove in the cylinder head, and the other end of the gas release pipe extends out of the cylinder head. By means of the whole-sealing internal circulation water cooling structure, fuel gas can be prevented from entering a water cooling circulation system, the total amount of cooling water in the water cooling circulation system is stable, and the normal working of the engine is ensured.

Description

technical field [0001] The invention relates to the field of motorcycle water-cooled engines, in particular to a fully enclosed internal circulation water-cooling structure of the motorcycle water-cooled engine. Background technique [0002] Existing water-cooled motorcycle engines generally adopt a closed circulation system, that is, cooling water circulates in a closed space to cool the engine. When the engine is working, the pressure in the circulation system changes. When the pressure reaches a set value, the cooling water in the circulation system will enter the auxiliary water tank through a one-way valve. On the contrary, when the pressure in the circulation system drops to a certain level , the cooling water in the auxiliary water tank will be added into the circulation system through another one-way valve. In this way, the cooling water in the circulation system always maintains a certain pressure and volume to ensure the reliability of cooling. When the engine is...

AI Technical Summary

Problems solved by technology

Due to the limited capacity of the auxiliary water tank, when the cooling water reaches a certain level, it will overflow from the vent hole of the auxiliary water tank. In this way, the cooling water in the water cooling circulation system will continue to decrease, the cooling effect will become poor, and the engine will not work properly due to overheating. or damaged

Therefore, the existing structure has high requirements for parts manufacturing quality, assembly quality and gasket materials, and it is difficult to control and control in mass production, and there are certain risks

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