基于扭矩轴坐标系的动力总成悬置系统解耦优化

Decoupling and Optimization of Mounting System in Torque Roll Axis

汽车发动机振动会直接影响到乘坐的舒适性,针对YC4E型发动机振动过大问题,在扭矩轴坐标系内,进行了动力总成悬置系统能量解耦优化。首先建立汽车动力总成悬置系统分析模型,再把车辆常用的曲轴坐标系转换为扭矩轴坐标系,建立动力总成悬置系统微分方程,最后基于MATLAB平台开发了悬置解耦优化软件。利用该软件和ADAMS进行仿真计算,其固有频率基本一致,证明此软件性能可靠;同时各方向的解耦率都达到90%以上,有效降低了发动机振动向车身的传递。

The vibration of engine in automobile must cause the worse ride comfort of passengers. The author are able to make automobile powertrain mounting system power decoupling optimization in Torque roll axis coordinates,focus on the YC4 E engine's vibration is too high. Firstly,constructde the analyze model of automobile powertrain mounting system. Secondly,changed crankshaft coordinates into the Torque roll axis coordinates,construct the differential equation of automobile powertrain mounting system. At the end,developed the optimized software that based on M ATLAB. The paper making use of the software compare with the ADAM S. The nature frequency demonstrates the software is available. As well as the ratio of the decoupling has achieved 90%,decrease the vibration that the engines' towards to the car body.