摘要
用平均指示压力(IMEP)法测量内燃机活塞组的摩擦力,必须准确地分析计算连杆和活塞组惯性力。基于活塞组的实际配合,给出了活塞组摩擦力的计算公式,推导了活塞组的加速度和连杆体上任一点在连杆中心线上的加速度,分析了惯性力的组成部分,用分布质量法计算了部分连杆质量的惯性力,分析了连杆的几种简化方法引起的连杆惯性力计算误差,为实现高精度IMEP法测量摩擦力提供了分析计算依据。
Piston-assembly friction measurement using IMEP(indicated mean effective pressure) method needs to exactly calculate the force of connecting rod and inertia force of the piston-assembly.In this paper,the formula of the piston-assembly friction is given based on the actual assembly.The actual acceleration of the piston-assembly and the acceleration of the arbitrary point along the center line of connecting rod are derived.Part of inertia force of the connecting rod is calculated by means of distributed mass ...
出处
《内燃机学报》
EI
CAS
CSCD
北大核心
2007年第6期560-564,共5页
Transactions of Csice
基金
国家自然科学基金资助项目(50175088)
