动力吸振器在CVT车型LockUp方向盘振动控制中的应用

Application of Dynamic Damper in STRG Lock up Vibration Control of CVT Vehicle

在介绍CVT车型LockUp工作原理和动力吸振器工作原理的基础上,针对某款车型的Lock Up方向盘振动问题,分别对Lock Up传递路径和方向盘共振特性进行了分析。结果表明,驱动轴和悬置入力是产生此问题的主要原因。但是考虑到驱动轴和悬置系统改动难度大的问题,提出了采用动力吸振器进行方向盘振动控制的方法。通过优化动力吸振器参数,成功使得方向盘的振动减小到了可接受的范围。

The mechanism of CVT＇s Lock up and dynamic damper were analyzed firstly. Based on this, one vehicle＇s Lock up STRG vibration was studied, including Lock up transfer path and STRG resonance. The result showed that the excitation of drive shaft and engine mount were the root cause. Considering the difficult for drive shaft and engine mount＇s tuning, a method of using dynamic damper to control the vibration was proposed. Through optimizing the parameter of dynamic damper, the STRG＇s vibration was reduced to acceptable level.