How does ABS work?
2 Answers
ABS works as follows: during braking, the ABS quickly determines the wheel lock-up state based on the speed signals from each wheel speed sensor. It closes the normally open input solenoid valve for the wheel that is starting to lock up, keeping the braking force constant. If the wheel continues to lock up, it opens the normally closed output solenoid valve. ABS stands for Anti-lock Braking System, and its functions are: 1. To prevent loss of vehicle control, increase braking distance, and improve vehicle safety; 2. To enhance the overall braking performance of the vehicle; 3. To prevent wheel lock-up during braking; 4. To ensure that the driver can control the direction during braking and prevent rear axle skidding.
Speaking of how the Anti-lock Braking System (ABS) works, let me share from my decade-plus experience behind the wheel. During emergency braking, it acts like a guardian angel: when you press the brake pedal, wheel sensors constantly monitor rotation speed. If any wheel is about to lock up—say, on slippery roads—the system's electronic module instantly intervenes, briefly reducing brake pressure to keep the wheel rolling without skidding. This prevents loss of control (like spinning out) while maintaining steering ability to avoid obstacles. My most vivid memory was that snowy winter day when ABS literally saved my life by preventing a pedestrian collision. Now I always remind friends to check their ABS warning light during routine maintenance, ensuring sensors and hydraulic lines remain unobstructed. Essentially, by modulating brake pressure multiple times per second, ABS helps you decelerate stably—a true lifesaver on the road.
