How to Use the Service Brake When Driving a Vehicle Equipped with ABS System?
1 Answers
When braking in a vehicle equipped with an ABS system, the driver should always keep the brake pedal firmly pressed without releasing it, allowing the ABS system to function effectively and ensuring sufficient and continuous braking force. During emergency braking, feeling the brake pedal vibrate is a normal working characteristic of the ABS system and does not indicate a fault in the braking system. Here is more information about the ABS system: 1. The Anti-lock Braking System, abbreviated as ABS, functions by automatically controlling the braking force during vehicle braking to prevent wheel lock-up. It keeps the wheels in a state of rolling and sliding (with a slip ratio of about 20%), ensuring maximum adhesion between the wheels and the road surface. 2. During braking, the ABS quickly determines the lock-up state of each wheel based on speed signals from the wheel speed sensors. It closes the normally open input solenoid valve for the wheel starting to lock up, maintaining the 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.
