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How ABS Works

1 Answers

OHeidi

07/29/25 10:14pm

It consists of control units and the ABS warning light, among other components. In different ABS systems, the structure and working principles of the brake pressure modulation device may vary, and the internal structure and control logic of the electronic control unit may also differ. ABS is typically composed of wheel speed sensors, a brake pressure modulation device, and electronic equipment. In a standard ABS system, a speed sensor is installed on each wheel, and signals regarding the speed of each wheel are input into the electronic control unit. The electronic control unit monitors and assesses the motion state of each wheel based on the signals from the wheel speed sensors and generates corresponding control commands. The brake pressure modulation device mainly consists of pressure modulation solenoid valves, an electric pump, and an accumulator. As an independent unit, it is connected to the master cylinder and each wheel cylinder via brake lines. The brake pressure modulation device is controlled by the electronic control unit to adjust the brake pressure of each wheel cylinder. While driving, the driver should always pay attention to the ABS warning light on the dashboard. If it flashes or stays lit, it indicates that the ABS system is not functioning. At this point, the brake system reverts to normal braking operation, and the vehicle can continue to be driven, but without ABS functionality. It is recommended to have it inspected and repaired as soon as possible. "ABS" is translated as "Anti-lock Braking System" in Chinese. It is a vehicle safety control system with the advantages of anti-skid and anti-lock. ABS is an improved technology based on conventional braking devices and is categorized into mechanical and electronic types. Modern vehicles are equipped with advanced anti-lock braking systems. ABS not only retains the braking function of conventional systems but also prevents wheel lock-up, allowing the vehicle to steer while braking. This ensures directional stability during braking, preventing skidding and deviation. It is currently the most advanced braking device with the best braking performance in automobiles.

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