Where is the ABS sensor located on the tire?
1 Answers
ABS sensors are located on the inner side of the car tires and can be seen when the car is lifted. There are three types of ABS sensors: linear wheel speed sensors, ring-type wheel speed sensors, and Hall-effect wheel speed sensors. How ABS works: During braking, the ABS system quickly determines the wheel lock-up state based on speed signals from each wheel speed sensor. It closes the normally open input solenoid valve on the wheel that is starting to lock, maintaining constant braking force. If the wheel continues to lock, the normally closed output solenoid valve opens, rapidly reducing braking pressure on that wheel by allowing brake fluid to flow directly back to the reservoir, preventing complete wheel lock-up due to excessive braking force. This keeps the braking condition at the optimal point (20% slip ratio S), achieving the best braking performance and maximum driving safety. Functions of ABS: Maximize brake efficiency, reducing braking time and distance. Effectively prevent vehicle skidding and fishtailing during emergency braking, ensuring good driving stability. Allow steering during emergency braking, providing good steering control. Avoid violent friction between tires and the ground, reducing tire wear.