07-06-2012, 04:50 PM
HYDRAULIC BRAKING SYSTEM
BRAKING SYSTEM.ppt (Size: 67 KB / Downloads: 3)
Introduction
Brake is the device used for slowing, stopping and controlling the vehicle. In braking operation the kinetic energy of vehicle is converted into heat, which dissipated to atmosphere.
Main Functions of Brake 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 desired position after bringing it in complete rest when there is no driver.
Principle of Working of Hydraulic Brakes
It works on Pascal’s law i.e. ‘pressurized fluid in a close container exerts equal pressure in all direction’.
In hydraulic brakes braking effort is multiplied by master Cylinder.
Construction of Hydraulic Brake
The hydraulic braking system consists of :-
Master cylinder
Wheel cylinder
Brake shoes
Brake drum
Brake fluid with brake lines
The Purpose Served By Master Cylinder
To built the hydraulic pressure required to operate the system.
To bleed or force air out of brake line and wheel cylinder,
To acts as a reservoir to maintain a constant volume of fluid in system.
Wheel Cylinder
Wheel cylinder converts the hydraulic pressure built by the master cylinder into mechanical movement of piston and hence cause to expand brake shoes to apply brakes.
