To solve the heat transfer boundary problem among the piston, liner, coolant and body parts, especially the temperature and heat transfer among the coolant, liner and body.

• 摘要为解决发动机活塞组－缸套－冷却水－机体之间传热边界条件难以确定的问题，尤其是冷却水和缸套、机体之间的流固边界的温度和换热系数，将这几个部件作为一个耦合系统进行传热研究。