上海交通大学学报

上海交通大学学报（自然版）

• 能源与动力工程 • 上一篇    下一篇

考虑连杆-曲轴变惯性影响的活塞二阶运动分析

张执南,谢友柏   

  1. (上海交通大学 机械与动力工程学院, 上海 200240)
  • 收稿日期:2009-05-11 修回日期:1900-01-01 出版日期:2010-04-29 发布日期:2010-04-29

Effects of Connecting RodCrankshaft Variable Inertia on Piston Secondary Motion

ZHANG Zhinan,XIE Youbai   

  1. (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2009-05-11 Revised:1900-01-01 Online:2010-04-29 Published:2010-04-29

摘要： 为分析活塞二阶运动轨迹和裙部侧向力,提出一个包括连杆和曲柄动力学在内的活塞动力学和摩擦学耦合分析模型.该模型同时也将活塞环组摩擦力、活塞销和曲轴偏置、配缸间隙对活塞动力学和摩擦学的影响考虑在内.计算和比较了连杆和曲轴变惯性对活塞二阶运动和侧向力的影响，同时也分析了配缸间隙对活塞二阶运动的影响.结果表明，连杆变惯性及配缸间隙都对活塞二阶运动和裙部侧向力有重要影响.

关键词: 活塞二阶运动, 连杆, 变惯性, 内燃机

Abstract: This paper presented a novel model with considering the effects of connecting rodcrankshaft variable inertia on the piston secondary motion. The corresponding computing program was developed to predict the piston trajectory and the side force of piston skirt. The results show that the connecting rod inertia variation has considerable effects on the piston secondary motion and the side force of piston skirt, while the effect of the crankshaft variable inertia is weak. The model can be applied to analyze various engine design parameters and operational conditions in the design of internal combustion engines.

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