有直动式液压间隙调节器的气门机构的试验与计算分析  

Experiment and Dynamic Simulation of Valve Train with Direct-acting Hydraulic Lash Adjuster

作　　者：赵雨东[1] 陆际清[1] 仝坤 葛青 

机构地区：[1]清华大学,汽车安全与节能国家重点实验室

出　　处：《汽车工程》2000年第4期262-265,250,共5页Automotive Engineering

摘　　要：对一个有直动式液压间隙调节器(HLA)的气门机构进行了试验和动力学计算分析。实测了HLA的泄沉特性以确定HLA模型中模拟泄漏影响的阻尼参数。为了获得气门机构的实测运动规律以验证计算结果和估算HLA高压腔混气量,对该机构的气门加速度和HLA高度变化量进行了动态测试。动力学计算结果和实测结果对比表明所建立的两种气门机构动力学计算模型都是可用的。分析了计算结果对模型参数的敏感度。Experiment and dynamic analysis of a valve train with hydraulic lash adjuster (HLA) were reported. Leakdown test of the HLA was conducted to determine the damping factor in the HLA spring - damper model. On a test rig, the valve accelerator and the shortening of HLA were measured to examine the two dynamic models of valve train and to estimate the air content in the HLA high-pressure chamber. The two models of valve train were validated by the comparison between simulated and measured results and the sensitivity of simulated valve tra in dynamics to model parameters was also analyzed.

关 键 词：气门机构 液压间隙调节器 动力学 试验 计算分析 

分 类 号：U464[机械工程—车辆工程]