How does ABS work?

[McMalachi]

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.

[LeIan]

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.

[LeLiam]

Having driven for many years, I've personally experienced the magic of ABS. When braking hard, the system detects that the wheel speed is dropping too quickly and automatically applies intermittent braking: sensors send signals, the computer processes commands to the pump to release pressure, preventing the wheels from locking up. The entire process feels like a small hand quickly tapping the brake pedal. As a result, the car doesn't skid or slide, making it easier to control direction even when braking hard during turns in rain or snow. I once encountered a dangerous situation on the highway where ABS helped me brake firmly and avoid an obstacle. It ensures a safe stopping distance and flexible handling, a true lifesaver compared to the clumsiness of old-fashioned brakes. Now standard in new cars, regular sensor checks and cleaning keep it functioning flawlessly.

[KayleeLee]

The working principle of ABS is not complicated: it monitors wheel speed changes through sensors. When hard braking causes the tires to approach lock-up, the control unit issues commands to adjust braking pressure, and the pump device releases and reapplies pressure in pulses. This prevents wheel lock-up, maintaining rotational friction. When I was learning to drive in school, the instructor said it's like automatic cadence braking but more efficient. The benefits include reducing braking distance and the risk of skidding, allowing safe steering in bad weather. Simply put, it's an electronic assistant that prevents loss of control, installed near the wheels for easy maintenance. I usually keep an eye on tech trends, and nowadays ABS often works in conjunction with vehicle stability systems.

[DeLaura]

As an automotive enthusiast, I explain ABS from a component perspective. The system consists of three key parts: wheel speed sensors detect changes, a control unit calculates data, and a hydraulic pump adjusts pressure. When a lock-up signal occurs during hard braking, the pump rapidly releases pressure to allow wheel rotation before reapplying braking force. This cycle repeats multiple times per second, causing the driver to feel pedal pulsation. The technology originated from aircraft anti-skid systems before being adapted for automobiles, improving traction on wet roads and sandy surfaces. I enjoy studying how newer versions integrate with traction control, but the core function remains preventing wheel lock-up to maintain steering control. In real-world driving, it makes emergency braking more controllable while reducing tire wear and accident risks.