商用车怠速车内振动优化研究  

Research on Optimization of Idle Vibration for Commercial Vehicle

作　　者：吴萍 刘现青 刘志蒙 陈超 陈帆航 Wu Ping;Liu Xian-qing;Liu Zhi-meng;Chen Chao;Chen Fan-hang(Zhejiang Farizon Commercial Vehicle R&D Co.,Ltd,Zhejiang Hangzhou 31000)

机构地区：[1]浙江远程商用车研发有限公司,浙江杭州310000

出　　处：《内燃机与配件》2022年第16期21-23,共3页Internal Combustion Engine & Parts

摘　　要：针对某商用车怠速车内振动大且劣于竞品车的问题,通过实车测试排查,主要原因为动力总成悬置隔振性能较差。建立悬置系统模型,采用多目标优化方法,以系统固有频率、各方向模态解耦率为目标,以悬置软垫三向刚度为变量,结合供应商制造能力,获得了两组满足优化目标且工程上可实现的悬置软垫刚度组合。通过实车对比验证,最终选取了隔振性能最优的方案,优化后,怠速车内振动改善61%,与竞品车相当,达到优化目标。Aiming at the problem of large vibration inside a commercial vehicle at idle speed and inferior to that of competing vehicles,the main reason is poor vibration isolation performance of powertrain mounting through real vehicle test.The mounting system model was established,and the multi-objective optimization method was used to obtain two groups of mounting cushion stiffness combinations that met the optimization objectives and could be achieved in engineering by taking the natural frequency and the decoupling rate of modes in each direction as the objective and the three-way stiffness of the mounting cushion as the variable,combined with the manufacturing capacity of the supplier.Through the comparison and verification of real vehicles,the scheme with the best vibration isolation performance was finally selected.After optimization,the vibration of idling vehicles was improved by 61%,which was equal to that of competing vehicles,and the optimization goal is achieved.

关 键 词：商用车 怠速振动 悬置系统 优化 

分 类 号：TB535[理学—物理]