The Study Of Decoupling And Vibration Isolation Of Mount System Of Powertrain For E-REV

As the main cause of the vehicle vibration, powertrain vibration has great influences on the performance of NVH such as smoothness and ride comfort. Proper design of powertrain mount system has significant role which can not only obviously reduce vibration and noise and improve ride comfort character, but also can slow down damage to the powertrain and other components. It is very important to optimize the decoupling and vibration isolation of powertrain mount system when we arrange the system reasonablely.This paper mainly studied decoupling and vibration isolation performance of the of extended range electric vehicle’s powertrain mount system. This issue analyzes principal vibration excitation force based on a large number of references about powertrain mount and combined with the main feature of extended range electric vehicle’s powertrain mount system, then analyzes and optimizes decoupling in Adams/Vibration through establishing six degrees of freedom model of powertrain mount system in Adams/View according to the actual model parameters. Do vehicle objective experiments in order to verify the correctness of Adams simulation performance, and the objective experimental result and simulation error is less than ±10%.Then the decoupling is optimized. The design variants are the rigidity and location, and the design objective is energy decoupling. The coupling level of optimized system has greatly reduced that meet the requirements basically.Finally, this paper gives the rectification program and test verification by testing and analyzing mount system vibration isolation performance based on vibration theory, and ultimately get the satisfied mount system.