Principle and use of anti-lock braking system[汽车维修知识]

Anti-lockBraking System(ABS) Is an improved technology based on conventional braking devices.
Its working principle is:
Rely on high-sensitivity wheels mounted on each wheelRotating speedsensorAnd the speed of the car on the bodysensor, Controlled by computer. During emergency braking, once a wheel is found to be locked, the computer immediately instructs the pressure regulator to release (decrease) the pressure of the wheel's brake cylinder and restore the rotation of the wheel. The working process of ABS is actually a cyclical working process of lock-release-lock-release, so that the vehicle is always in a critical lock-up gap rolling state, effectively overcoming the deviation, side slip, and throwing during emergency braking. Tail, to prevent the car body from losing control and other situations.car repairMaintenance net
Many people may know a little bit about the principle of ABS, but most car owners do not know how to use ABS correctly. The proper use of ABS is directly related to driving safety.
When ABS is braking, the high-speed retracting and releasing action of the brake cylinder will cause the high-pressure brake fluid to be frequently squeezed and produce a louder sound.Brake pedalThere will also be jitter and top foot phenomenon.Don’t be bothered by this phenomenon while driving. In an emergency, you should not hesitate to use ABS for braking.brakeStep on the bottom, you can't relax.
Since the wheels do not lock up during ABS emergency braking, the front wheels still have a guiding effect, and the Driver can brake and steer for emergency avoidance.
The ABS system has very high requirements for brake fluid, so the addition of brake fluid should strictly follow the requirements in the instruction manual, and it is generally forbidden to mix different types of brake fluid. It is recommended to replace the brake fluid of the same model once a year.
ABS wheel sensor and ring gear are installed on each wheel. Always keep the sensor probe and ring gear clean to prevent mud, oil, and especially magnetic substances from adhering to the surface, which will cause the sensor to fail or lose to the computer. The signal error affects the normal operation of the ABS system.
Vehicles equipped with ABS system should strictly follow the regulationstireAir pressure standard while maintaining coaxialtireTo balance the air pressure, it is strictly forbidden to use tires of different specifications. In addition, pay attention to check the gap between the wheel speed sensor probe and the ring gear. Excessive axial gap of the wheel bearing will directly affect the normal operation of the ABS.
When driving, the Driver should pay attention to the ABS indicator on the dashboard. If it is found to flicker or stay on, it indicates that the ABS system has been out of working state. At this time, the brake system has returned to the normal brake working interface, and the car can continue to drive, but it no longer has the ABS function. It is recommended to overhaul it as soon as possible.
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