A method of assisting deceleration during a stop of a motor vehicle having a driveline including a traction motor, a road wheel operably connected to the driveline, a friction brake configured to decelerate the road wheel, and an electronic controller, the method including detecting, via the electronic controller, a deceleration of the road wheel, a request to stop a vehicle is detected. The method also includes commanding the traction motor to provide regenerative braking in response to the request to stop the vehicle. The method additionally includes determining a current vehicle operating state. The method also includes determining an amount of brake drag torque to be generated by the friction brake based on the current vehicle operating condition. The method also includes commanding application of the determined amount of brake drag torque in parallel with regenerative braking to operate the friction brake as a mechanical driveline damper while assisting regenerative braking to stop the motor vehicle.
一种在机动车辆停止期间辅助减速的方法,该机动车辆具有传动系统,该传动系统包括牵引电机、可操作地连接到传动系统的行走轮、构造为使行走轮减速的摩擦制动器以及电子控制器,该方法包括经由电子控制器检测,检测停止车辆的请求。该方法还包括响应于停止车辆的请求,命令牵引电机提供再生制动。该方法另外包括确定当前车辆运行状态。该方法还包括基于当前车辆运行状态来确定将由摩擦制动器产生的制动拖曳扭矩的量。该方法还包括命令与再生制动并行地施加所确定量的制动拖曳扭矩,从而将摩擦制动器作为机械传动系统阻尼器操作,同时辅助再生制动以停止机动车辆。
Automatic friction brake assisted vehicle stop
自动摩擦制动器辅助的车辆停止
2023-05-19
Patent
Electronic Resource
Chinese