Engine, cylinder sleeve, cylinder cover and sealing structure for cylinder sleeve and cylinder cover

Abstract

The invention relates to the technical field of engines, in particular to an engine, a cylinder sleeve, a cylinder cover and a sealing structure for the cylinder sleeve and the cylinder cover. The sealing structure for the cylinder sleeve and the cylinder cover aims to solve the technical problem that a leakage phenomenon easily occurs between an existing engine shell and a cylinder sleeve. The sealing structure for the cylinder sleeve and the cylinder cover comprises an external thread and a first assembly hole, wherein the external thread is arranged at one end of the cylinder sleeve, and the first assembly hole is formed in the cylinder cover; an internal thread matched with the external thread is arranged on the inner wall of the first assembly hole; and the cylinder sleeve and the cylinder cover are connected through the matching between the external thread and the internal thread. According to the engine, the cylinder sleeve, the cylinder cover and the sealing structure for the cylinder sleeve and the cylinder cover, an engine shell and the cylinder sleeve are connected through the internal thread and the external thread, so that the sealing reliability between the engine shell and the cylinder sleeve can be improved, and the phenomenon that the sealing effect of the engine is poor due to the conditions of the temperature fluctuation of the engine or the pressure fluctuation in the engine can be reduced.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an engine, a cylinder liner, a cylinder head, and a sealing structure between the cylinder liner and the cylinder head. Background technique [0002] This section provides background information related to the present disclosure only and is not necessarily prior art. [0003] Most engines on the market use cylinder head gaskets to seal between the body and the cylinder head, and the cylinder head gasket has strict requirements on environmental factors such as surface pressure, temperature, and flatness. The fluctuation of the axial force of the bolt may cause the failure of the cylinder head gasket. Once the cylinder head gasket fails, it will affect the sealing effect of the engine. However, the cylinder head gasket is in a high-temperature and high-pressure environment for a long time. The high-temperature and high-pressure environment will pose a severe test to the axial forc...

AI Technical Summary

Problems solved by technology

[0003] Most engines on the market use cylinder head gaskets to seal between the body and the cylinder head, and the cylinder head gasket has strict requirements on environmental factors such as surface pressure, temperature, and flatness. The fluctuation of the axial force of the bolt may cause the failure of the cylinder head gasket. Once the cylinder head gasket fails, it will affect the sealing effect of the engine

However, the cylinder head gasket is in a high-temperature and high-pressure environment for a long time. The high-temperature and high-pressure environment will pose a severe test to the axial force of the cylinder head bolts and the flatness of the assembly surface between the body and the cylinder head. In the case of fluctuations in internal combustion temperature, fluctuations in the axial force of cylinder head bolts, and poor flatness between the body and the cylinder head, failures are likely to occur, resulting in gas pressure leakage in the combustion chamber and water ingress in the cylinder bore.

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