2. CONTENTS
Introduction
Braking system in trains
Parts of a braking system
Stages in braking
Charging stage
Application stage
Release stage
Block diagram of braking system
3. INTRODUCTION
Brake is a device used to stop a
moving vehicle by applying pressure
on wheels
Braking system plays an important
role in stopping an automobile
Any moving automobile has kinetic
energy in order to stop them a contact
material is applied to the tyres due to
which friction creates and eventually
train stops
4. Braking system in trains
Generally many countries use
pneumatic brakes in their trains
Braking system which uses air as fluid
is known as pneumatic braking system
Pneumatic brake is a type of friction
brake for vehicles in which
compressed air pressing on piston is
used to apply pressure on break pad
to stop the train
6. Parts of a breaking system
Air compressor: It pumps air in to the
reservoirs .
Air storage: they are used to allow
compressed air.they hold enough air
to allow brakes to use even
compressor fails
7. Parts of a breaking system
Brake valve: brakes are applied by
pushing down the brake valve
Brake cylinder: this is provided for
actuating the brake rigging for
application of brakes
Triple valve: while using brakes the
pipe pressure has to be reduced with
respect to brake valve .during these
operations triple valve is used
9. Charging stage
During this stage brake pipe is
charged to pressure
There is no application of brake in this
stage
10. Application stage
In order to apply brakes pressure in
brake pipes has to be dropped
Reduction in brake pipe pressure
positions distributor valve in such a
way that auxilary reservoir gets
connected to brake cylinder
12. Release stage
During this stage brake pipe is again
charged to normal position
Auxilary cylinder gets isolated from
distributor valve
Braking cylinder is exposed to
atmospheric pressure and brakes are
released
14. Conclusion
These brakes became popular
because of high stopping power
compared to hydraulic brakes
They are fail safe
So they are used in heavy vehicles
like trains ,trucks etc.