内燃机活塞环组降低摩擦功耗的新方法

A New Method to Reduce Frictional Power Consumption of Piston Ring in Internal Combustion Engine

分析了活塞环组的摩擦损失,研究了活塞环的结构变化。根据当今内燃机产品发展中面临的问题和需求,提出了活塞环组中的两个气环改为一个气环的新结构。根据流体动力润滑理论与活塞环载荷方程,分析了一个气环与两个气环的不同摩擦功耗。结果表明,采用一个气环后的摩擦功耗有大幅度降低。高质量的一个气环,能够完成现有两环的密封润滑功能,这样的结构设计新方法有助于推进内燃机的轻量化。

The frictional power consumption in piston ring group were analyzed. The changes of structure of piston ring were investigated. A new structure design of adopting a compress ring was put forward according to the problems and requirements faced to development of internal combustion engine now. The different frictional power consumptions of one and two compress rings were analyzed based on hydrodynamic lubrication theory and load equation of the ring. The results show that there are more reduction of frictional power consumption in one compress ring than two. The one compress ring of high quality can perform the function of seal and lubrication of two rings. The new method of structure design will help to push the lightweight process of internal combustion engine.