an internal combustion engine

Abstract

The invention relates to the technical field of internal combustion engines, and discloses an internal combustion engine, which comprises: a cylinder block, and a cylinder barrel is arranged on the cylinder block; a cylinder liner is arranged in the cylinder barrel; a piston is telescopically arranged in the In the cylinder liner; the cylinder head, the cover is arranged on the cylinder barrel; the combustion chamber is located on the piston and the cylinder head; the flow guide part is arranged in the combustion chamber, and is used to restrict the fluid It flows between the piston and the cylinder head to the cylinder liner, thereby preventing the combustible mixture from expanding and burning near the cylinder liner, avoiding the wear and deformation of the cylinder liner under high temperature load for a long time, and ensuring The power and fuel economy of the internal combustion engine are improved, and the service life of the internal combustion engine is extended.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to an internal combustion engine. Background technique [0002] With the increase of engine power, the heat load of the engine is also greatly increased, especially with the increase of compression ratio, and the maximum burst pressure is limited by the structural strength and cannot reach the level required for high compression ratio, so the lag advance angle needs to be reduced Explosion pressure, and due to NOx (Nitrogen oxide, nitrogen oxides) emission requirements, some models need to delay the advance angle to reduce NOx emissions, all of which will lead to a delay in the end of fuel injection, an increase in the combustible mixture near the cylinder liner, and long-term cylinder liner Under high temperature load, it will have a great impact on the mechanical properties and deformation resistance of the material, resulting in thermal fatigue that directly a...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an internal combustion engine, which includes a cylinder head, a piston, a guide part and a combustion chamber located on the piston and the cylinder head, and the flow of the fluid in the combustion chamber is limited by the setting of the guide part. The flow near the cylinder liner solves the problem that the cylinder liner wear and deformation of the internal combustion engine in the prior art reduces the power of the internal combustion engine, fuel economy and shortens the life of the internal combustion engine

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