某车型传动轴2阶抖动优化控制  

Second-order Jitter Optimization Control of the Transmission Shaft of a Vehicle Type

作　　者：邓欣[1,2] 徐高新 陈清爽 沈学锋 罗轶超 DENG Xin;XU Gaoxin;CHEN Qingshuang;SHEN Xuefeng;LUO Yichao(Jiangling Motors Corporation Limited,Nanchang 330052,China;Jiangxi Provincial Key Laboratory of Automotive Noise and Vibration,Nanchang 330001,China)

机构地区：[1]江铃汽车股份有限公司,江西南昌330052 [2]江西省汽车噪声与振动重点实验室,江西南昌330001

出　　处：《汽车实用技术》2024年第22期33-36,53,共5页Automobile Applied Technology

基　　金：南昌市重大科技攻关项目(洪科字2023-137号)。

摘　　要：随着动力系统功率扭矩不断提升,十字万向节传动轴2阶抖动问题更加凸显,研究该问题对提升后驱车型乘坐舒适性意义重大。根据传动轴附加弯矩计算公式得出,万向节夹角越大附加弯矩越大,整车抖动越大。文章以某车型起步大油门加速工况的传动轴2阶抖动为研究对象,实车测试分析振动较大位置为传动轴第二中间支撑和后桥主减壳体,进一步分析得知传动轴夹角α3和α4较大。根据分析结果提出了调整传动轴夹角和等速万向节改制等两种优化方案,并且整车验证优化效果明显。该研究内容对优化传动轴2阶抖动问题具有较强的工程意义。With the continuous increase of power and torque of the power system,the problem of second-order jitter of the cross universal-joint transmission shaft becomes more and more prominent.According to the calculation formula of the additional bending moment of the transmission shaft,the larger the angle of the universal joint,the larger the additional bending moment,the larger the vehicle jitter.In this paper,the second-order vibration of the transmission shaft under the condition of large throttle acceleration at the start of a vehicle is taken as the research object.The real test and analysis of the larger vibration location are the second middle support of the transmission shaft and the main reducer housing of the rear axle.Further analysis shows that the angle between the transmission shaftα3 andα4 are larger.According to the analysis results,two optimization schemes are proposed,such as adjusting the angle of the transmission shaft and reforming the constant velocity universal joint,and the optimization effect of the whole vehicle is obvious.The research content has strong engineering significance for optimizing the second order jitter problem of the transmission shaft.

关 键 词：十字万向节 传动轴 2阶抖动 附加弯矩 

分 类 号：U467[机械工程—车辆工程]