{ Auto Report Autotronic }

The purpose of en electronic anti lock or anti skid braking system (ABS) is to prevent wheel lockup under heavy braking conditions on virtually any type of road surface. The most efficient braking takes place when the wheels are all revolving.

The basic Principle of operation of anti lock braking system is fairly simple.

If the driver slams on the brakes and the wheel lock, the following accur:

* Driving stability is lost and the vehicle skids.
* The vehicle cannot steered.
* The braking distance increases.
* The risk of an accident increases.

The basic Principle of operation of anti lock braking system is fairly simple (Above picture). It is a hydraulic braking system with a hydraulically assisted power booster/master cylinder. A sensor at each wheel indicates rotational speed. When the computer or antilock brake control module detects one wheel slowing much more quickly that the others, it operates solenoid valves to reduce hydraulic pressure and braking to that wheel to minimize chances of a skid. When that wheels speed approaches the other, brake pressure is reapplied. The computer samples wheel speed data hundreds of times per second. It interprets not only the wheel’s rotational speed but also its rate of change. Its ultimate goal is to achieve a controlled stop, in the shortest distance, whitout wheel-lock. Frank..

Useful Link:
1. The Hardware of ABS System.
2. Repair Brake System Ferio.
3. Three Processes of ABS system.