Custom Search    E-mail :-               Vacuum Braking System
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system, vacuum breaking system   A moving train contains energy,
known as kinetic energy, which needs to be removed from the
train in order to cause it to stop. The simplest way of doing
this is to convert the energy into heat. The conversion is
usually done by applying a contact material to the rotating
wheels or to discs attached to the axles. The material creates
friction and converts the kinetic energy into heat. The wheels
slow down and eventually the train stops. The material used for
braking is normally in the form of a block or pad.  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"