Introduction To Brake and Different Types Of Brake | Parts Of Automobile
A brake is a mechanical device which inhibits motion, slowing or stopping a moving object or preventing its motion.
Main Function Of Braking System:
- To stop the vehicle safely in shortest possible distance in case of emergency.
- To Control the vehicle when it is descending along the hills.
- To keep the vehicle in desire position after bringing it in complete rest when there is no driver.
Most brakes commonly use friction between two surfaces pressed together to convert the kinetic energy of the moving object into heat, though other methods of energy conversion may be employed. For example regenerative braking converts much of the energy to electrical energy, which may be stored for later use. Other methods convert kinetic energy into potential energy in such stored forms as pressurized air or pressurized oil. Eddy current brakes use magnetic fields to convert kinetic energy into electric current in the brake disc, fin, or rail, which is converted into heat. Still other braking methods even transform kinetic energy into different forms, for example by transferring the energy to a rotating flywheel.
Brakes are generally applied to rotating axles or wheels, but may also take other forms such as the surface of a moving fluid (flaps deployed into water or air). Some vehicles use a combination of braking mechanisms, such as drag racing cars with both wheel brakes and a parachute, or airplanes with both wheel brakes and drag flaps raised into the air during landing.
|Examples Of Brakes|
The brakes for automotive use may be classified according the following considerations.
4. METHOD OF ACTUATION
5. EXTRA BRAKING EFFORT
Based on the above considerations, brakes are classified with respect to following factors.
1. With respect to application,
a. Foot brake i.e. Service Brake
b. Hand brake i.e. Parking Brake
2. With respect to the number of wheels,
a. Two wheel brakes
b. Four wheel brakes
3. With respect to the method of braking contact
a. Internal expanding brakes
b. External contracting brakes
4. With respect to the method of applying the braking force.
a. Single acting brake
b. Double acting brakes.
5. With respect to the brake gear,
a. Mechanical brake
b. Power brakes
6. With respect to the nature of power employed
a. Vacuum brake
b. Air brake
c. Hydraulic brake
d. Hydrostatic brake
e. Electric brake
7. With respect to power transmission,
a. Direct acting brakes
b. Geared brakes
8. With respect to power unit,
a. Cylinder brakes
b. Diaphragm brake