摘要：对柴油机活塞的热状态进行了分析，给出了活塞温度场的计算方法。以某柴油机改型前后活塞顶结构变化为例，研究了顶部不同燃烧室型式对活塞温度场的影响，为活塞的结构改进与优化提供了有效依据。

关键词：活塞、热状态、燃烧室

Abstract: This paper analyzed the thermal status of diesel engine pistons and proposed the calculation method of temperature field. Basing on the thermal load of a certain diesel piston that was structured in different piston heads, it studied the effect of the structure of a piston combustion chamber on its temperature field, providing a practical reference for further optimization of the structure designs of pistons.

    Keywords: Piston;Thermal status; Combustion chamber