车辆拖滞扭矩控制功能介绍与应用  

Introduction and Application of Vehicle Drag Torque Control Function

作　　者：龚文 GONG Wen(BYD Automotive Industry Company Limited,Shenzhen 518100,China)

机构地区：[1]比亚迪汽车工业有限公司,广东深圳518100

出　　处：《汽车实用技术》2024年第23期24-27,31,共5页Automobile Applied Technology

摘　　要：汽车牵引力控制系统(TCS)是在车辆加速过程中进行车辆驱动轮的滑移率控制,主要通过发动机或电机降扭和轮端制动来控制驱动轮打滑,以达到车身稳定作用。文章介绍了另一种驱动轮滑移率控制功能(车辆拖滞扭矩控制)的工作原理、系统架构、信号交互要求以及实际应用举例。车辆拖滞扭矩控制(DTC)功能有别于TCS功能,是在低附着路面和非加速情况下实现车辆稳定性控制,属于车身电子稳定控制系统增值功能之一。根据DTC功能的应用场景,举例说明了车辆在制动和非制动两种场景下DTC功能激活时车辆实际表现,结果表明具备DTC功能的车辆在运行过程中,可以避免驱动轮抱死导致的前轴失去转向或后轴甩尾问题,有利于提高车辆稳定性,给驾驶员带来更加优越的驾驶安全体验。The vehicle traction control system(TCS)is to control the slip rate of the vehicle driving wheel in the process of vehicle acceleration,mainly through the engine or motor torque reduction and wheel end braking to control the driving wheel skid,in order to achieve the body stability.This paper introduces the working principle,system architecture,signal interaction requirements and practical application examples of another driving wheel slip rate control function(vehicle drag torque control).Unlike TCS function,the drag torque control(DTC)function is one of the value-added functions of electronic stability controller to realize vehicle stability control under low adhesion road surface and non-acceleration conditions.According to the application scenarios of DTC function,the actual performance of the vehicle when the DTC function is activated in braking and non-braking scenarios is illustrated.The results show that the vehicle with DTC function can avoid the front axle loss of steering caused by the lock of the driving wheel or the rear axle rejection during operation,which is conducive to improving the stability of the vehicle.Bring more superior driving safety experience to the driver.

关 键 词：车身电子稳定控制 拖滞扭矩控制 牵引力控制系统 

分 类 号：U469.7[机械工程—车辆工程]