What is the difference between air brakes and vaccum brakes on Indian trains ?................................................. .................................................. .....................
(Vacuum Brakes)
The vacuum brake system is controlled through a brake pipe connecting a brake valve in the driver's cab with braking equipment on every coach. The operation of the brake equipment on each vehicle depends on the condition of a vacuum created in the pipe by an ejector or exhauster. The ejector, using steam on a steam locomotive, or an exhauster, using electric power on other types of train, removes atmospheric...
more... pressure from the brake pipe to create the vacuum. With a full vacuum, the brake is released. With no vacuum, i.e. normal atmospheric pressure in the brake pipe, the brake is fully applied........................................... .................................................. ........ .......... ..... .....................................
Air Brakes
The vast majority of the world's trains are equipped with braking systems which use compressed air as the force used to push blocks on to wheels or pads on to discs. These systems are known as "air brakes" or "pneumatic brakes". The compressed air is transmitted along the train through a "brake pipe". Changing the level of air pressure in the pipe causes a change in the state of the brake on each vehicle. It can apply the brake, release it or hold it "on" after a partial application.