石小明1，2，刘维娟1，2，姜殿昌1，2

1.滨州渤海活塞有限公司，山东滨州256602；2.山东省发动机活塞摩擦副重点实验室，山东滨州256602

摘要：为适应市场发展需要，开发一款高负荷发动机用铝活塞。根据发动机的升功率和最高爆发压力，对活塞整体结构、活塞环岸、环槽、销孔、内冷油腔进行设计，通过采用活塞销孔镶铜套设计增加销孔的可靠性。有限元分析表明活塞满足强度要求；利用动力学仿真分析对活塞二阶运动进行评估，满足载荷要求。对装配该活塞的发动机进行1500 h台架试验，结果表明：活塞各项性能指标均满足发动机的设计和使用要求。

关键词：高负荷；活塞；铜套；有限元分析；动力学

Abstract:In order to meet the upgraded market requirement, a high load aluminum piston is developed. The structure, ring land, ring groove, pin bore and inner cavity are designed by calculating the specific power and max,peak cylinder pressure. The copper bushing of pin bore is designed to improve the reliability. Through the finite element calculation, the fatigue factor of the piston meets the requirements of the strength; the results of dynamic simulation analysis are meet the requirements of the engine load. After running 1500 h of the engine bench test, the performance indexes of piston piston meet the requirements of the engine.

Keywords:high load；piston；bushing；finite element analysis；dynamic analysis