发动机配气机构刚柔耦合动力学特性研究  

A Research on Rigid-flexible Coupling Dynamics of Engine Valve-train

作　　者：张晓蓉[1,2] 宋朝省[2] 吴佳芸[2] 朱才朝[2] 

机构地区：[1]重庆科技学院机械学院,重庆401331 [2]重庆大学,机械传动国家重点实验室,重庆400030

出　　处：《汽车工程》2009年第2期118-122,共5页Automotive Engineering

基　　金：新世纪优秀人才计划(NCET-05-0766)资助

摘　　要：基于三维实体模型,运用刚柔耦合理论,把摇臂视为柔性体,采用动态子结构法,建立了某顶置气门发动机配气机构凸轮轴—摇臂—气门系统三维刚柔耦合动力学模型,对其动态特性进行了仿真,得出气门的动力学响应、摇臂动态应力等变化规律。结果表明该发动机配气机构气门升程曲线连续光滑,凸轮与摇臂工作接触过程中无脱离现象发生。Based on 3D solid model, applying the theory of rigid-flexible coupling dynamics, taking rocker ann as flexible body,and using dynamic substructure method, a 3D Rigid-flexible Coupling Dynamics Model for the camshaft-rocker-valve system of a overhead valve engine is established. A simulation on its dynamic characteristic is carried out, with the dynamics response of Valve system and the changing rule of rocker arm dynamic stress ob- tained. The results show that the valve lift curve is continuous and smooth and the cam and rocker arm keep proper contact throughout the whole working process.

关 键 词：发动机 配气机构 刚柔耦合动力学 

分 类 号：U464[机械工程—车辆工程] U464.134[交通运输工程—载运工具运用工程]