Body stability control system has many different names, such as VSA of Honda, VDIM of Toyota, ESC of GM (domestic models) and so on. Although the names are different, the principle is almost the same.
ESP is mainly composed of sensors, actuators and electronic control unit (ECU). Sensors generally include wheel speed sensor, steering wheel angle sensor, lateral acceleration sensor, yaw rate sensor and brake master cylinder pressure sensor.
Actuators generally include traditional braking systems (vacuum booster, pipeline and brake), hydraulic regulators and so on. The electronic control unit is connected with the engine management system to intervene and adjust the engine power output.
Extended data
Importance of ESP
1, the research of North American Highway Insurance Association (IIHS) shows that the installation of ESP can effectively reduce 43% fatal traffic accidents;
2. The research of NHTSA also shows that using ESP as the standard configuration can effectively reduce 34% of car accidents and 765,438+0% of car rollover accidents, and even reduce SUV accidents by 59%;
2.ESP is mainly used to deal with the risk of losing control of tail flick caused by emergency obstacle avoidance and continuous turning. In case of emergency avoidance, ESP intervenes to increase the driving wheel power; When the tail-flick trend occurs, ESP will brake the wheel on the other side to reduce the rotation, thus helping the vehicle to follow the driver's steering intention.
Baidu Encyclopedia-Body Electronic Stability System