Automobile Engineering

Braking is the mechanism in the motor vehicle which is used to slowing down and stopping the vehicle to rest in the shortest possible distance.



 A brake is a device by means of which artificial resistance is applied on to a moving machine member in order to retard or stop the motion of the member or machine.


Principle of braking system:

                While operating the braking system the KINETIC ENERGY of moving vehicle is converted in to HEAT ENERGY.

Braking of a vehicle depends upon the static function that acts between tyres and road surface. Brakes work on the following principle to stop the vehicle:

“The kinetic energy due to motion of the vehicle is dissipated in the form of heat energy due to friction between moving parts (wheel or wheel drum) and stationary parts of vehicle (brake shoes)”.

The heat energy so generate4d due to application of brakes is dissipated into air.

Brakes operate most effectively when they are applied in a manner so that wheels do not lock completely but continue to roll without slipping on the surface of road.


Functions of Brakes:

Brakes have the following functions:

1. It is used to stop the vehicle.

2. It is used to control the speed where and when required.

3. It is used to control the vehicle while descending along the slope.

4. To park the vehicle and held it in stationary position without the presence of Driver.