整车驻车制动时载荷及制动距离分析

Analysis of Load and Braking Distance at Vehicle Parking Lock

分析了整车驻车制动时静动态载荷,并根据整车制动工况,引入整车静态振荡临界速度vs,得出整车动态载荷、驻车锁止车速vp、临界速度vs之间的关系。理论计算坡道制动距离时,引入整车“拒绝溜坡”车速vd,得出制动距离、“拒绝溜坡”车速vd、临界速度vs之间的关系。该研究优化了驻车制动时传统动静态载荷及制动距离理论方法,为后续驻车系统设计提供了一定的指导意义。

The static and dynamic load at vehicle parking lock was analyzed. The critical velocity vs of the whole vehicle static oscillation according to the braking condition of the whole vehicle was introduced, and the relationship between the dynamic load of the whole vehicle, the parking lock speed vp , and the critical speed vs was obtained. In the theoretical calculation of the ramp braking distance, the reject slope slipping speed vd was introduced, and the relationship between braking distance, the reject slope slipping speed vd and the critical speed vs was obtained. This study optimizes the traditional dynamic and static load and braking distance theory method in parking braking, and provides some guidance for the subsequent parking system design.