皮卡车动力总成悬置系统隔振特性优化  

Isolation Performance Optimization of Pickup Powertrain Mount System

作　　者：张怡[1] 饶建强[2] 陈吉清[2] 

机构地区：[1]广州城市职业学院机电系,广州510405 [2]华南理工大学广东汽车工程重点实验室,广州510640

出　　处：《汽车工程学报》2016年第3期181-186,共6页Chinese Journal of Automotive Engineering

基　　金：广东省科技计划项目(2015B010119001/2013B010405007)

摘　　要：针对某皮卡车行驶过程中振动噪声过大的问题,基于悬置系统隔振理论,建立了动力总成悬置系统动力学仿真分析模型,对该车型动力总成悬置系统的模态、刚度、阻尼等影响悬置系统隔振效果的关键参数进行分析,在此基础上将悬置块刚度作为设计变量进行优化设计。通过试验测试,对比优化前后动力总成悬置系统的隔振率和驾驶室噪声。结果表明,改进后悬置系统隔振率有了明显上升,车内噪声值有所降低,整车的噪声、振动与声振粗糙度(Noise,Vibration,Harshness,NVH)品质得到提高。To solve the problem of excessive vibration/noise during the driving of a pickup, a dynamic simulation analysis model was established based on the vibration isolation theory for suspension systems. The key vibration parameters such as modal parameters, stiffness and damping of the mounting system were analyzed, and the optimization result was obtained by setting the mounting block stiffness as design variable. The vibration isolation ratio of the powertrain mounting system and cab noise were measured and compared before and after optimization. The results show that after the design modification, the vibration isolation ratio increases significantly, the cab noise is lower, and the NVH quality is improved.

关 键 词：汽车动力总成 隔振 悬置系统 优化 

分 类 号：U461.4[机械工程—车辆工程]