Jaypratik (DLW)

7/31/2019 Jaypratik (DLW)

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SUBMITTED BY-

SUDHANSHU KUMAR

SEC-B3 SEM-7TH

ENROLMENT NO- SGVU091123291SUBMITTED TO-

NEHA TIWARI

A

REPORT

ON

DIESEL LOCOMOTIVE WORKS

VARANASI

Submitted By:

Jaypratik Goswami

M.Tech (DD) Electrical Engg.

Sec-B2 Sem-7th

Enroll No.- SGVU091123261

Submitted To:

Neha Tiwari


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DLW is running under Indian government and certified with

ISO-9001,ISO-14001 and OHSAS-18001.DLW has dedicated 5700 locomotives to the nation.

400 locomotives to Indian non railways customer in public and

private sector.it also exported 100 locomotives to various

country.Its workshop spread over 8Km in area.

DLW exports its locomotives to various nations like Sri

Lanka, Bangladesh, Tanzania, Angola, Sudan, Myanmar and

many other NROs like BHEL,CIL etc.


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TYPES OF DIESEL

ELECTRIC

LOCOMOTIVES

Diesel Electric locomotives comes in three varieties

according to the period in which they were designed.

1. DC-DC (DC generators supplying power to DC traction

motors)

2. AC-DC (AC alternator output rectified to supply DC

traction motors)

3. AC-DC-AC (AC alternator output rectified to DC and

then inverted to 3 phase AC supply for the traction motors)


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Block Division1. Heavy Weld Shop2. Heavy Machine Shop

Loco Division1. Loco Frame Shop2. Pipe Shop3. Truck Machine Shop4. Traction Assembly Shop.5. Sheet Metal Shop6.Loco Assembly. Shop7. Loco Paint Shop8. Loco Test Shop

EngineDivision1. Engine Erection Shop2. Engine Testing Shop3. Light Machine Shop4. Sub Assembly Shop.

5.Rotar Shop6. Heat Treatment Shop

PRODUCTION

SHOPS


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Diesel

engineAlternator rectifier

governorTraction

control

Front

Traction

Motor

bogie

Rear

Traction

Motor

bogie

Basic concept


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Component of diesel engine

1)-Valves- valves for a two stroke engine, there may simply be an exhaust outletand fuel inlet that is called valves system.

2)-Exhaust system- Exhaust system frequently contains device tocontrol pollution, both chemical and noise pollution.

3)-Cooling system- Combustion generates a great deal of heat, and some ofthis transfer to the wall of the engine. Cooling system usually employ air or liquid

(usually water) cooling.

4)-Piston- It is located in a cylinder and is made gas-tight by piston ringsused for a two stock engine. Piston are act as a valve by covering and uncovering

parts in the cylinder war.

5)-Crank shaft- A rotating rod transmit mechanical power in a machine.


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6)- Starter system- most piston engine use a starter motor powered by thesame battery as runs the rest of the electronic system.

7)- Lubrication system- Internal combustions engines requirelubrication in operation that moving parts slide smoothly over each other. In

sufficient lubrication subjects the parts of the engine to metal to metalcontact,fraction,heat build-up etc.


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Traction motor

Electrical motor providing the primary rotational torque

of a machine usually for conversion in to linear motion

Dc series wound motor running on approximately 600

volt.


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Alternator

Alternator generate the

electricity by the same

principle as Dc-generator.

when the magnetic fieldaround the conductor

changes a current is

induced in the conductor

according to the faradays

law of electromagneticinduction.


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BASIC COMPONENTS OF A DIESEL

ELECTRIC LOCOMOTIVE


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A diesel engine is started (like an automobile) by turning over the crankshaftuntil the cylinders fire or begin combustion. The starting can be done

electrically or pneumatically. Pneumatic starting was used for someengines. Compressed air was pumped into the cylinders of the engine until itgained sufficient speed to allow ignition, then fuel was applied to fire theengine. The compressed air was supplied by a small auxiliary engine or by highpressure air cylinders carried by the locomotive.

Electric starting is now standard. It works the same way as for an automobile,with batteries providing the power to turn a starter motor which turns over the

main engine. In older locomotives fitted with DC generators instead of ACalternators, the generator was used as a starter motor by applying battery powerto it.

STARTING OR CRANKING

OF LOCOMOTIVE


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Inverter change the Dc voltage into Ac voltage.

At the time of cranking starter draws very heavy

current which is in the form of 800 amps and voltagebecomes low.

Voltage should not be less than 28v.

After cranking of engine , alternator rotates thesecondary alternator.

Due to rotation of secondary alternator it gives the

supply to the battery through the rectifier.And rectifier charge the battery during the running

condition of locos.


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Governor

A device used to

measure and regulatethe speed of an engine.

The governor control

the engine speed based

on throttle handle

position.

Engine rpm is

measured by a tachogenerator or engine

speed sensor mounted

on a engine.


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Engine Testing

Purpose-

To check the leakage in oil, fuel oil and water ckt.

to check the capability of engine i.e-BHP.

to check the engine RPM at different notches.

checking for any abnormalities


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Weight- 80 ton engine- 12 cylinder

excel weight-20 ton

wheel diameter-1092mm

Gear ration-18:65

maximum speed- 140km/hr

fuel capacity- 3000 litre

WDG-5


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Broad gauge.

Main line.

4500hp (IGBT based)

Freight locomotives.

WDG4 WDP3

TYPES OF

LOCOMOTIVES

Broad gauge.

Main line.

4500hp (IGBT based).

Passenger locomotive


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Broad gauge.

Main line.

3100hp.

Freight locomotive.

Broad gauge.

Main line.

3300hp

Mixed service loco.

WDG 3A WDM 3D


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1350hp.

Broad gauge.

Shunting locomotive.

Meter gauge.

Main line.

1350hp

Mixed service loco.

WDS6 YDM4

12 cylinder,2350hp locomotive for meter gauge and cape

gauge.


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WDG-4 WDP-4

WDG-3A WDM-3D

WDS-6 YDM-4


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DRIVER CABIN

ALERTER


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Jaypratik (DLW)

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