What is the function of the braking ABS system?
2 Answers
The functions of the braking ABS system are: 1. Automatically controlling and adjusting the wheels; 2. Preventing the vehicle from experiencing braking deviation, spinning, or fishtailing during emergency braking, which could result in loss of directional control. The working principle of the braking ABS system is: 1. Determining the wheel lock-up state based on the speed signals from the wheel speed sensors; 2. Closing the input solenoid valve on the wheel that begins to lock up to maintain the braking force; 3. Opening the output solenoid valve when the wheel is locked up for an extended period, causing the braking pressure on the wheel to rapidly decrease through the pipeline connected to the brake fluid reservoir, preventing the braking force from completely locking up the wheel.
Yesterday when I was driving my kid to school, I almost rear-ended another car. Thank goodness the ABS saved us. It was raining, and the taxi in front suddenly slammed on its brakes. I instinctively stomped on the brake pedal as hard as I could. Then the brake pedal started pulsing with vibrations, but I could still steer, and the car came to a smooth stop without skidding. My neighbor who's a mechanic explained that was the ABS working to prevent wheel lockup and loss of traction. Now whenever I drive on slippery roads, I deliberately test emergency braking to feel that rhythmic brake pedal feedback. By the way, it also shortens braking distance - last time I tested it on the highway, stopping from 100km/h took at least two car lengths less than my old car without ABS. This feature can really be lifesaving in critical moments. I recommend all new drivers find a safe place to experience how it responds.
