How does ABS work?
2 Answers
ABS working principle: During braking, ABS can quickly determine the wheel lock-up state based on the speed signals from each wheel speed sensor, close the normally open input solenoid valve on the wheel that starts to lock up, and keep the braking force unchanged. If the wheel continues to lock up, the normally closed output solenoid valve is opened, and the braking pressure on this wheel rapidly decreases due to the direct connection to the brake fluid reservoir pipeline, preventing the wheel from completely locking up due to excessive braking force. ABS is the anti-lock braking system, whose function is to automatically control the magnitude of the brake force during vehicle braking, keeping the wheels from locking up and maintaining a state of rolling while sliding (with a slip ratio of about 20%), ensuring that the adhesion between the wheels and the ground is at its maximum.
ABS stands for Anti-lock Braking System, let me explain how it works. Each wheel is equipped with sensors that monitor changes in rotational speed. When you suddenly hit the brakes, if the system detects a wheel is about to stop rotating, the computer immediately intervenes to control the pump pressure device, briefly releasing brake pressure to allow the wheel to rotate slightly before reapplying the brakes. This rapid cycle repeats, making the brake pedal feel slightly pulsating. The purpose is to prevent wheels from completely locking up and skidding, maintaining traction control while allowing the driver to steer and adjust direction. Modern vehicles combine this system with electronic units and mechanical components – in practical use, I've experienced its advantages on slippery roads: more stable braking with reduced risk of losing control.
