Engine piston and engine comprising same

Abstract

The present invention discloses an engine piston and an engine comprising same. The engine piston comprises an upper piston body and a lower piston body, wherein a combustion chamber sinking downward is formed in the upper end surface of the upper piston body; the lower piston body is connected with the upper piston body; a cooling chamber which is adjacent to the combustion chamber and extends up and down is defined between the upper piston body and the lower piston body; the cooling chamber is filled with a cooling medium; a piston ring is arranged on the peripheral surface of at least one of the upper piston body and the lower piston body. According to the engine piston of the embodiment of the present invention, the cooling chamber which is adjacent to the combustion chamber and which extends up and down is defined between the upper piston body and the lower piston body; when the engine piston moves up and down in a reciprocating manner, the cooling medium is capable of oscillating in the cooling chamber, driving the heat of the combustion chamber down and enabling the heat to be easily transmitted down; the temperature of the top of the engine piston and the temperature of the piston ring are reduced; the cooling performance is improved; the requirements of highly-intensified engines can be met.

Description

technical field [0001] The present invention relates to the technical field of engines, and more specifically, relates to an engine piston and an engine having the same. Background technique [0002] The piston is the key component of the reciprocating internal combustion engine. During the working process, the piston bears the impact of alternating heat load and mechanical load caused by the high-pressure and high-temperature gas generated by combustion. Its reliability is directly related to the reliability and life of the engine. . With the continuous improvement of the society's requirements for energy saving, emission reduction and low carbon, the power density of the engine is increasing, and the burst pressure has increased from 12 to 14Mpa in the past to more than 25Mpa. For this reason, the requirements for the high-temperature fatigue strength of the piston material and the thermal conductivity of the material have been further improved, but the reliability of the...

AI Technical Summary

Problems solved by technology

For this reason, the requirements for the high-temperature fatigue strength of the piston material and the thermal conductivity of the material have been further improved, but the reliability of the piston with the traditional structure is low, and it is difficult to meet the requirements of the high-strength engine for extremely high thermal load and mechanical load

Images