某虚拟主销悬架车型低速转向性能分析与优化  

Analysis and Optimization of Low Speed Steering Performance of a Virtual Kingpin Suspension Vehicle

作　　者：景立新[1,2] 冯博 李飞[1,2] 吴利广[1,2] JING Lixin;FENG Bo;LI Fei;WU Liguang(China Automobile Technology&Research Center Co.,Ltd.,Tianjin 300300;CATARC Automotive Test Center(Tianjin)Co.,Ltd.,Tianjin 300300)

机构地区：[1]中国汽车技术研究中心有限公司,天津300300 [2]中汽研汽车检验中心(天津)有限公司,天津300300

出　　处：《汽车实用技术》2021年第22期92-95,共4页Automobile Applied Technology

摘　　要：某改款车型设计开发过程中发现低速转向工况存在倒吸现象、低速极限转向位置无法回正等问题,通过理论分析转向力矩影响因素,利用动力学分析方法得出问题产生的主要原因为该虚拟主销悬架转向过程中ackerman误差大、主销后倾拖距变化率大及采用的轮胎侧偏刚度大。结合悬架及转向系统布置,提出了优化设计方案,通过仿真分析,验证了优化方案的可行性,为车辆设计、调校提供了理论依据。In the process of design and development of a vehicle,it is found that there are some problems in the low-speed steering condition,such as self-turning phenomenon and can't return at low speed and ultimate turning position.Through the theoretical analysis of the influence factors of the steering torque,the main causes of the problem are the large ackerman error of the virtual kingpin suspension,the large change rate of mechanical trail and the large tire cornering stiffness.According to the layout of suspension and steering system,the optimization design scheme is put forward,and the feasibility of the optimization scheme is verified through simulation analysis,which provides a theoretical basis for vehicle design and tuning.

关 键 词：低速转向 回正 ackerman 

分 类 号：U463.33[机械工程—车辆工程]