发动机活塞组瞬态摩擦力特性的实验研究  

Experimental Research on the Characteristics of Instantaneous Friction Force of Engine Piston Assembly

作　　者：夏建新[1] 姜恩沪 张宗才 孙自力 

机构地区：[1]上海铁道学院

出　　处：《内燃机工程》1989年第1期1-8,共8页Chinese Internal Combustion Engine Engineering

摘　　要：活塞组摩擦损失占整台发动机机械损失的很大一部分。因此,减小活塞组的摩擦力能有效地改善燃油经济性。本文着重用瞬时IMEP 法对活塞组瞬态摩擦力特性进行实验研究。此外还探讨了发动机负荷和转速,机油粘度,机油添加剂,活塞环道数和径向弹力等因素对摩擦损失的影响。The frictional loss of piston assembly make up a substantial portion of engine's mechanical loss.Therefore reducing the friction force of piston assembly improves the fuel economy effectively.This paper is devoted emphatically to the exper- imental research on the characteristics of the instantaneous friction force of piston ass- embly by instantaneous IMEP method.Some acting factors on the friction force,such as engine load and speed,oil viscosity and additives,the number of piston rings and their elastic pressure,etc.were discussed.

关 键 词：发动机 活塞组 瞬态 摩擦力 摩擦力 

分 类 号：TK403[动力工程及工程热物理—动力机械及工程]