悬置系统动刚度对整车NVH性能的影响和优化

Dynamic Stiffness of Mount System For The Vehicle Influence and Optimization of NVH Performance

通过对某一车型的动力总成扭力臂悬置橡胶主簧结构和硬度的优化来降低悬置的动刚度以及对发动机悬置的解耦膜片降低橡胶硬度和解耦膜片与上流道板和惯性通道间隙的调整等方案来降低发动机悬置的动刚度等方法,阐述了对这一车型遇到的加速过程中驾驶室内轰鸣噪声问题的NVH优化方法和思路。此方法证明了通过调整悬置动刚度特性的手段对于解决此类NVH问题是比较快速和有效的,对解决实际工程上的NVH问题有一定指导意义。

Based on the powertrain torque rod rubber structure and hardness of the main spring optimization to reduce the dynamic stiffness and to reduces the rubber hardness of the decoupling diaphragm in engine mount,and decoupling diaphragm between up runner plate and inertia channel clearance adjustment scheme to reduce the dynamic stiffness of engine mount,expounds the model to solve accelerated the process of driving indoor booming noise problems of NVH optimization method and train of thought.This method proves that the idea to solve the NVH problem is relatively fast and effective by adjusting the characteristics of the mount dynamic stiffness,which has some guiding significance for solving such NVH problem in actual engineering.