What is the working principle of the ABS pump?
2 Answers
The working principle of the ABS pump is: relying on highly sensitive wheel speed sensors installed on each wheel and the vehicle speed sensor on the body, controlled by a computer, when emergency braking is detected and a wheel locks up, the computer immediately instructs the pressure regulator to release pressure from the wheel's brake cylinder, allowing the wheel to resume rotation. The ABS pump, also known as the Anti-lock Braking System, features anti-skid and anti-lock characteristics. Its working process involves a cycle of locking and releasing, keeping the vehicle in a state of near-lock rolling, effectively overcoming skidding, side slipping, and fishtailing during emergency braking, and preventing loss of vehicle control.
After driving for so many years, I've often been asked about the ABS pump. Simply put, the ABS pump is the heart of the anti-lock braking system, stepping in during emergency braking to prevent wheels from fully locking up. Specifically, when sensors detect a sudden speed drop in a wheel nearing lock-up, the computer instructs the ABS pump to modulate hydraulic pressure—it rapidly opens and closes valves while pumping brake fluid to adjust braking force, creating a pulsating effect similar to gently tapping the brakes, thus maintaining steering control. This feature proves invaluable, especially on rainy or slippery roads, by preventing skids and loss of control. I personally experienced its lifesaving role during a high-speed emergency stop—without the ABS pump's timely intervention, I'd have collided with the car ahead. In short, it ensures your brakes are both safe and reliable; never underestimate this small component—it can save lives. If the ABS warning light ever comes on while driving, get it checked immediately without delay.
