What does ABS brake do?
ABS brakes are common on most cars today. This equipment helps the car actively prevent locking brakes and safely decelerate in emergency situations.
What is ABS brake?
ABS (Anti-Lock Brake System) is a system that prevents the wheels from locking during emergency braking, preventing the wheels from slipping on the road surface. Thereby helping the driver control the steering wheel and the vehicle is always in a stable condition.
What is the function of the ABS braking system? (Illustration)
Structure and operating principle of ABS brakes
The ABS anti-lock braking system consists of four parts:
Speed sensors (rotors) are equipped on the front and rear wheels. The sensor is made of permanent magnets and magnetic core coils. This sensor helps the vehicle detect vehicle speed and transmits information to the ECU processor.
The deceleration sensor helps the ABS braking system measure the deceleration of the wheel, thereby adjusting the brake fluid pressure appropriately. There are 2 types of deceleration sensors installed on the vehicle: vertical sensors and horizontal sensors, consisting of 2 pairs of LEDs and transistors, a grooved disc, and a signal conversion circuit.
The ABS brake actuator is responsible for providing the optimum oil pressure level to the wheel brake cylinders to prevent the brakes from locking. The ABS brake actuator consists of an electronic valve, a pressure tank, an electric motor and an oil pump.
The controller acts as the control center of the braking system. This part receives speed information through the wheels and calculates so that the hydraulic brake actuator provides the appropriate oil pressure to avoid anti-lock braking.
How ABS brakes work
When the vehicle encounters an emergency situation and needs to stop quickly, the speed sensor installed on the wheel will send a signal to the central controller when it detects that the wheel rotation speed is slower than the specified speed. From there, the central controller will calculate and command the ABS actuator to provide the appropriate level of brake fluid pressure.
How to use ABS brakes effectively
With each wheel speed sensor, the ABS braking system will automatically activate when the driver uses the brakes. The driver can check the operation of the ABS brakes through the indicator light on the clock in the car cabin, the indicator light turns on when starting the car, and turns off immediately after running for a while.
In case the ABS brake warning light flashes continuously, it means that the ABS brake is faulty, then the ABS brake system will be disabled, the user should immediately take the vehicle to the garage for inspection and repair.
Many users still mistakenly think that the ABS braking system will shorten the braking distance, but in fact, ABS brakes only help the vehicle control the steering direction, limiting the phenomenon of the vehicle skidding and losing control when braking at high speed.
Therefore, do not rely on the ABS braking system to drive at high speed, overtake recklessly, or brake suddenly. The ABS braking system only supports safer braking but cannot completely avoid dangerous situations.
For ABS brakes, the driver does not need to press or release the brake. For vehicles without ABS braking system, when braking suddenly to avoid the brake locking, the driver will have to brake or press and release the brake many times.
For vehicles with ABS braking system, the driver does not need to repeatedly press and release the brake pedal, just keep the brake pedal pressed, because the ABS system has already performed this operation.
