What is the ESP (Car Body Stabilization System) on the car configuration table?
When we plan to purchase the first car for ourselves, when we look at the "safety system" item of the car parameter equipment table, we often see many English acronyms, such as: ESP, ABS, ACC, GRA, etc. For new drivers who have never studied cars, I don’t know what this abbreviation means. I only know that the configuration of this car is very rich, and it is not very clear what it can do. Then let me introduce you to the various ABS, ESP, TPMS, ACC, and then do something.
What is ESP, DSC, VDC, VSA, TCS, CCS, ACC?
ESP (Car Body Stabilization System) can prevent the vehicle from slipping out of control in the event of an unexpected situation, mainly when the vehicle is oversteer or understeer, braking or power intervention, allowing the vehicle to return Go to the right route and avoid losing control of the vehicle. So ESP is an active security system. Usually ESP is integrated with electronic aid systems such as ABS, EBD, BAS, and ASR. However, due to the different strategies of various auto manufacturers, the name of the body electronic stability system is different, such as BMW, Land Rover called DSC, Infiniti called VDC, Honda called VSA.
There are many types of automotive electronic safety configurations, but in combination, the main configuration includes ABS (anti-lock braking system), ESP (body electronic stability system), TPMS (tire pressure monitoring system), MKB (multiple collision prevention system), ACC (Adaptive Cruise System), CCS/GRA (Constant Cruise System), etc. For drivers who have ample money at hand and have the ability to purchase and pursue perfection, the configuration is certainly better.
Other common automotive electronic systems, TCS is the traction control system (or tracking control system), which is used to prevent the vehicle from losing control when it is slipping; the cruise is divided into fixed speed cruise and adaptive cruise, that is, CCS and ACC. As the name implies, cruise control is a car that cruises at a certain speed and does not require the driver to operate (step on the throttle).
Automotive ESP Body Stability Control System
Before introducing the topic, let us first understand what is an electronic stability control system.
The automotive electronic stability control system is a new active safety system for vehicles. It is a further extension of the functions of the anti-lock braking system (ABS) and the traction control system (TCS). On this basis, it increases the yaw of the vehicle when it is turning. The rate sensor, the lateral acceleration sensor and the steering wheel angle sensor control the lateral stability of the vehicle by controlling the driving force and braking force of the front, rear, left and right wheels through the ECU.
The system consists of three parts: sensor, electronic control unit (ECU) and actuator. The electronic control unit monitors the running status of the vehicle and controls the engine and braking system of the vehicle. A typical automotive electronic stability control system mainly includes four wheel speed sensors, a steering wheel angle sensor, a lateral acceleration sensor, a yaw rate sensor, a brake master cylinder pressure sensor, etc., and the execution part includes a conventional brake system (vacuum Boosters, piping and brakes, hydraulic regulators, etc., the electronic control unit is linked to the engine management system to intervene and adjust the engine's power output.
This system mainly controls the longitudinal and lateral stability of the vehicle to ensure that the vehicle travels according to the driver's consciousness. The basis of the electronic stability control system is the ABS brake anti-lock function. This system continuously brakes hundreds of times in one second when the tire is about to lock in the case of automobile braking, which is similar to the mechanical “point brakeâ€. In this way, when the vehicle is fully braked, the tire can still ensure rolling, and the rolling friction effect is better than the sliding friction effect after the lock, and the driving direction of the vehicle can be controlled.
On the other hand, the system cooperates with the engine ECU. When the driving wheel is slipping, by comparing the rotational speeds of the respective wheels, the electronic system determines whether the driving wheel is slipping, and immediately reduces the throttle intake air amount, reduces the engine speed, and reduces the power output. Brake the slipping drive wheel. This will reduce the slippage and maintain the most appropriate power output between the tire and the ground grip. No matter how oil is applied, the drive wheel will not slip.
The system is designed to ensure the lateral stability of the vehicle. When the system detects that the vehicle has understeer or excessive through the signals of the angle sensor, the lateral acceleration sensor and the wheel speed sensor, the system will control the single or multiple wheels to brake. Adjusting the car's lane change or body posture during cornering makes the car more stable and safe when changing lanes or cornering.
The electronic stability control system (also known as the ESP body stabilization system) has many brands, and the names of the various manufacturers are different. For example, Volkswagen called it ESP, Honda called VSA, Toyota called VSC, and the generalized electronic stability control system, which should be collectively referred to as ESC.
Wuxi Lerin New Energy Technology Co.,Ltd. , https://www.lerin-tech.com