27-10-2014, 11:19 AM
Abstracts: The conventional mechanism used for automobile disc brake is simple in operation. The disc is directly connected with wheel and rotates at same speed of the wheel. Also, a caliper is rigidly mounted over the disc. The assembly of caliper contains piston and brake pads. When brakes are applied by the driver, the pressurized fluid through master cylinder actuates the piston which forces brake pads towards disc to give braking effect. In order to increase braking effect, we need to increase the frictional force. So, an advanced mechanism can be provided which includes an external pulley supporting caliper. If we rotate pulley through an electric motor, then caliper also rotates with it. However, the rotation of pulley is given in opposite direction to that of the disc. Due to such reversed motion of caliper, the brake pads increases friction force over the disc which reduces stopping distance.