基于解决传动系统变速器齿轮敲击的分析方法  

Analysis Method Based on Solving Gear Rattle in Transmission of a Driveline System

作　　者：万里翔[1] 王波[1] 刘雪莱[2] 侯秋丰 姚实聪 上官文斌[2] WAN Lixiang;WANG Bo;LIU Xuelai;HOU Qiufeng;YAO Shicong;SHANGGUAN Wenbin(School of Mechanical Engineering,Southwest Jiaotong University Chengdu,610031,China;School of Mechanical and Automotive Engineering,South China University of Technology Guangzhou,510641,China;Ningbo Hongxie Co A,Ltd A Ningbo,315807,China;China Automotive Engineering Research Institute CoA,Ltd A Chongqing,401122,China)

机构地区：[1]西南交通大学机械工程学院 [2]华南理工大学机械与汽车工程学院 [3]宁波宏协股份有限公司 [4]中国汽车工程研究院股份有限公司

出　　处：《振动．测试与诊断》2019年第6期1218-1224,1360,共8页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(11472107)

摘　　要：建立一汽车传动系统6自由度动力学模型,模型中包括发动机、离合器、变速器与整车,考虑了变速器内承载齿轮副以及非承载齿轮副啮合间隙。以变速器输入轴的角加速度值为评价指标,研究模型参数变化对传动系统扭转振动的影响。利用序列二次规划法对存在非承载齿轮敲击问题的某车辆的飞轮转动惯量和离合器设计参数进行优化。根据优化结果,试制了离合器,并对新旧离合器下传动系统非承载齿轮敲齿的情况进行测试,测试了变速器处的输入轴扭转角加速度、变速器壳体处加速度以及发动机舱变速器侧声压。测试结果表明,增大飞轮侧转动惯量和离合器阻尼转矩、合理地调节离合器刚度可以衰减变速器输入轴角加速度幅值,抑制非承载齿轮副敲击现象。A driveline system model of six degrees of freedom is established,and the meshing clearance between the geared gears in the transmission are modeled.The dynamic response is calculated using the developed model to estimate angular acceleration for each rigid body in the model.Taking the angular acceleration of the input shaft for transmission as an evaluation index,the influence of model parameters on the angular acceleration of the input shaft is studied.Based on the developed model,the parameters of the moments of inertia for flywheel and stiffness of clutch are optimized by sequential quadratic programming.Then,in the experiment,the torsional angle acceleration of the input shaft for transmission,the vibration acceleration of transmission and the sound pressure at the transmission side at an engine compartment are measured and compared on the baseline clutch and the optimized clutch to measure.The results show that the angular acceleration amplitude of the input shaft and the gear impact of unloaded gear rattle can be effectively decreased by increasing the inertia of the flywheel and the damping torque of clutch,or by reducing the inertia of the unloaded gear on the output shaft.The unloaded gear rattle is decreased greatly using the optimized clutch,which validates the calculation and experiment methods of this study.

关 键 词：传动系统 非承载齿轮 齿轮敲击 离合器 齿轮拟合模型 

分 类 号：U463.21[机械工程—车辆工程] TH113.1[交通运输工程—载运工具运用工程]