Usually on dry roads, the latest ABS system can control the slip rate in the range of 5%-20%, but not all ABS brake at the same rate or to the same degree. Although the four-wheel anti-lock braking system can make the car brake for the shortest possible distance, if the braking is applied too late, so that it cannot come to a complete stop before colliding with the obstacle, it still cannot prevent the accident from happening. .
When braking, ABS can quickly judge the locked state of the wheel according to the speed signal sent by each wheel speed sensor, and close the normally open input solenoid valve on the wheel that starts to lock, so that the braking force remains unchanged. If the brake is locked, the normally closed output solenoid valve is opened, and the brake pressure on the wheel moves down rapidly due to the occurrence of a pipeline directly leading to the brake fluid storage tank, which prevents the wheel from being completely locked due to excessive braking force. When the braking state is always at the best point (slip rate S is 20%), the braking effect will be the best and driving will be the safest. The brake fluid in the front chamber of the brake master cylinder is a dynamic pressure brake fluid, which pushes the reaction sleeve to move to the right, and the reaction sleeve pushes the booster piston to move the brake pedal push rod to the right.