What is the function of ABS?
1 Answers
ABS system functions include: During braking, ABS quickly determines the wheel lock-up state based on speed signals from each wheel speed sensor, closing the normally open input solenoid valve for the wheel that begins to lock up to maintain constant braking force. If the wheel continues to lock up, the normally closed output solenoid valve is opened, causing the braking pressure on that wheel to rapidly decrease due to the direct connection to the brake fluid reservoir, preventing the wheel from completely locking up due to excessive braking force. This keeps the braking state at the optimal point (slip rate S of 20%), achieving the best braking effect and the highest driving safety. It maximizes the effectiveness of the brakes, reducing braking time and distance; effectively prevents vehicle skidding and fishtailing during emergency braking, ensuring good driving stability; allows steering during emergency braking, providing good steering control; avoids severe friction between tires and the ground, reducing tire wear.