中重型汽车发动机活塞的设计研究

The Study on Piston for the heavy Duty Automobile Engine

随着发动机强化程度的不断提高,要求活塞具有更好的抗机械疲劳性能和抗热疲劳性能。本文根据中重型发动机活塞的使用状况及失效模式,介绍了活塞材料的研究现状、结构设计特点及活塞的冷却技术等,研究提高活塞可靠性和寿命的途径。

Higher fatigue strength for the thermal and mechanical load were demanded by the heavy duty engine piston due to the critical requirement of the engine. According the application and invalidations of the piston, the study of the piston material and the modem configuration design character also ineluding the cooling capacity were illuminated concentratedly for improving the piston durability and life.