Anti-lock brake system – ABS Brake system
Generally the purpose of the brake is
to reduce the speed of the vehicles within a particular distance. The brake system which is presently used in automobiles provides the required braking force for controlling the speed of vehicle. However,nsuddenly or unexpectedly when the vehicle
is stopped, the vehicle is pulled away
from its normal braking due to the road condition, condition of the tread andnvehicle load etc. This situation leads to accidents.
To avoid this situation, before the
vehicle is started to pull along one side, the antilock braking system providesnbraking force to stop the wheel by giving and releasing the force intermittently. It is a kind of special type of braking system called as ABS system. In this system a hydraulic control unit and an electronic control unit are considered as important components. ECU receives the signals basedn on the various programming situations from the wheels (input signals) under various conditions and converts them
into input control signals and then sends to the hydraulic control unit.
Hence the system opens the brake fluid valve intermittently and provent
the wheel to lock completely. The block diagram of the ABS can be seen in Figure and the effect of ABS on the vehicle during braking can be seen in Figure.
Advantages of A.B.S system
1. It prevents the vehicle pulling from
one side during braking.
2. Reduces the stopping distance of the vehicle wheels.
3. Brake lining and the parts of the brake which withstand the vibration could work for long time
4. It is possible to drive and steer the
vehicle under control even during