发动机悬置对整车振动影响的研究

Study on the influence of engine mount on the whole vehicle vibration

针对某车怠速时存在的方向盘异常振动现象进行了振动的主观评价试验和道路行驶振动试验测量,结合动力总成的模态分析试验和振动ODS试验研究,查明了该车方向盘异常振动的原因,提出了更改发动机悬置刚度的具体的改进方案,并对改进刚度后的新悬置进行了整车选型试验,经过对比分析,确定了新的发动机悬置刚度参数,解决了某车型方向盘异常振动的问题。

Subjective evaluation and road vibration measurement on a vehicle is conducted for solving abnormal vibration problem of steeling wheel at idle. The cause of abnormal vibration of steeling wheel is checked out by modal test and ODS test of the powertrain. New design versions of modifying engine mount stiffness are put forward. Complete vehicle test for several sets mounts is conducted. A new engine mount parameters is determined and abnormal vibration problem is solved.