2. CONTENTS
INTRODUCTION
DIESEL LOCOMOTIVE DEPARTMENT
LOCOMOTIVE
DIESEL LOCOMOTIVE
PARTS OF DIESEL-ELECTRIC LOCOMOTIVE
DIESEL ENGINE
MAIN ALTERNATOR
AUXILIARY ALTERNATOR
MOTOR BLOWER
TRACTION MOTOR
FUEL TANK AND SAND BOX
AIR RESERVOIRS AND AIR COMPRESSOR
RADIATOR AND RADIATOR FAN
TURBOCHARGING
BOGI ASSEMBLY SHOP
3. INTRODUCTION
BHEL is the largest engineering and manufacturing enterprise in india
in the energy/infrastructure sector today. BHEL was established more
than 40 years ago when its first plant was set up in bhopal ushering in
the indigenous heavy electrical equipment industry in india , a dream
that has been more than realized with a well- recognized track record
of performance.
By the end of 5th five-year plan, it was envisaged by the planning
commision that the demand for power transformer would rise in the
coming years. Anticipating the country requirement BHEL decided to
set up a new plant. The new plan BHEL jhansi was set up in 9th janvary
1974.
5. LOCOMOTIVE
A locomotive or engine is a railway vehicle that
provides the motive power for a train. The word
originates from the latin loco- “from a place,”ablative
of locus, “place+ medieval latin motivus, “causing
motion,”and is a shortened form of the term
locomotive engine.
The first successful locomotive were built by cornish
inventor Richard Trevithick in 1804.
6. DIESEL LOCOMOTIVE
A diesel locomotive is a type of railway locomotive in
which the prime mover is a diesel is a diesel engine.
Several types of diesel locomotive have been
developed, differing mainly in the means by which
mechanical power is conveyed to the driving
wheels(driver).
7.
8.
9. DIESEL ENGINE
This is the main power source for the locomotive.
A diesel engine (also known as a compression-ignition
engine) is an internal combustion engine that uses the
heat of compression to initiate ignition to burn the
fuel that has been injected into the combustion
chamber.
It comprises a large cylinder block, with the cylinder
arranged in a straight line or in a v.
10.
11. MAIN ALTERNATOR
The diesel engine drives the main alternator which
provides the power to move the train.
The alternator generates AC electricity which is used
to provide power for the traction motors monted on
the trucks (bogies).
In older locomotives, the alternator was a DC machine,
called a generator.
12.
13. AUXILIARY ALTERNATOR
Locomotive used to operate passenger train are
equipped with an auxiliary alternator.
This produce Acpower for lighting, heating. Air
conditioning, dinning facilities etc. on the train.
The output is transmitted along the train through an
auxiliary power line.
14. MOTOR BLOWER
The diesel engine also drives a motor blower.
As its name suggest, the motor blower provides air
which is blown over the traction motors to keep them
cool during periods of heavy work.
The blower is mounted inside the locomotive body but
the motors are on the trucks, so the blower output is
connected to each of the motors through flexible
ducting.
The blower output also cool the alternator
15.
16. TRACTION MOTOR
Since the diesel-electric locomotive uses electric
transmission, traction motors are provided on the axles to
give the final drive.
These motors were traditionally DC but the development
of modern power and control electronics has led to the
introduction of 3-phase AC motors.
PINION/GEAR
The traction motor drives the axle through a reduction gear
of a range between 3 to 1 (freight) and 4 to 1 (passenger).
17.
18. FUEL TANK
Adiesel locomotive has to carry its own fuel around with it.
The fuel tank is normally under the loco frame and this
huge tank in the underbelly of the locomotive holds 2,200
gallons (8,328 L) of diesel fuel.
SAND BOX
Locomotive always carry sand to assist adhesion in bed rail
conditions.
Sand is not often provided on multiple unit train because
the adhesion requirements are lower and there are
normally more driven axles.
19. AIR RESERVOIR
Air reservoir containing compressed air at high
pressure are required for the train braking and some
other systems on the locomotive.
These are often mounted next to the fuel tank under
the floor of the locomotive.
AIR COMPRESSOR
The air compressor is required to provide a constant
supply of compressed air for the locomotive and train
brakers.
20.
21. RADIATOR AND RADIATOR FAN
The radiator works the same way as in an automobile.
Water is distributed around the engine block to keep
the temperature within the most efficient range for the
engine
The water is cooled by passing it through a radiator
blow by a fan driven by the diesel engine.
22. TURBO CHARGING
The amount of power obtained from a cylinder in a
diesel engine depends on how much fuel can be burnt
in it.
The amount of fuel which can be burnt depends on the
amount of air available in the cylinder. So ,if you can
get more air into the cylinder, more fuel will be burnt
and you will get more power out of your ignition.
Turbo charging is used to increase the amount of air
pushed into each cylinder.
Turbocharging gives a 50% increase in engine power
23.
24. LOCOMOTIVE DATA
General data of locomotive :
Model No : : WDM2
Specification : 16 cylinder v- type 4 stroke
diesel engine
Type : co-co
Power : 700hp, 1400hp, 2400hp
Maximum speed : 120 kph
Gear ratio : 68/18
Compression ratio : 16:1
Cylinder stroke : 279mm
25. WHEEL BASE
Wheel dia : 1092mm
Wheel base : 12834mm
Traction motor : Bhel 165
Track gauge : 1676mm
Brake equipment : vaccum/air
28. BOGIE SHOP
The locomotive bogies are rebuilt with new wheel sets,
suspension and remanufactured traction motors.
Separate shop has been set up for machining of wheel
sets and assembly of locomotive bogies
