The document discusses the railway wagon braking system. It describes how pneumatic braking systems use compressed air to apply pressure on brake pads to stop trains. The key components of a pneumatic braking system are the air compressor, air storage reservoirs, brake valve, brake cylinder and triple valve. The braking process involves three stages - charging, application and release. During application, a reduction in brake pipe pressure positions valves to connect the auxiliary reservoir to the brake cylinder, applying the brakes. Pneumatic brakes provide high stopping power and are fail-safe, making them suitable for heavy vehicles like trains.

1. Railway wagon braking
system

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

5. Block diagram of pneumatic braking
system

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

8. STAGES IN BRAKING
 Charging stage
 Application
 Release stage

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

11. Block diagram during application
stage

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

13. How do air brakes work

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.