DIESEL LOCOMOTIVE WORKS

DIESEL LOCOMOTIVE WORKS

PRESENTATION

Shubham VishwakarmaMechanical 3rd year AIMT Greater Noida

INTRODUCTION

- Diesel electric locomotives were introduced on Indian railway in 1950's.

- Diesel Locomotive Works ( DLW ) was established in 1961 incollaboration with M/s ALCO, USA in the ancient city of Varanasi. It is spread in 300 acres area at Varanasi.

- it is a production unit owned by Indian railway, for which itmanufacturers diesel -electric locomotive and its spare parts.

- DLW is an ISO 9001:2008, ISO 14001:2004 and OHSAS 18001:2007 Certified organization.

First Locomotive was flagged off by LateShri Lal Bahadur Shashtri on 3rd February1964.

- In order to upgrade the technology, Indian railways entered into an in 1995, with M/s General Motors, USA for transfer of technology for themanufacture of 4000 HP, fuel efficient WDG4/WDP4 locomotives at DLW.

- At present the latest locomotive produced by DLW; I.e WDG5 hascapacity upto 5000 HP and trying to make it 5500 HP

- DLW is supplying locos to PSU's & industries like NTPC, COAL, INDOGULFetc.

- DLW has also supplied locomotives to other countries such as SriLanka, Bangladesh, Malaysia, Vietnam etc.

SOME FACTS ABOUT DIESELELECTRIC LOCOMOTIVES

- DLW's annual Production - 25

- Cost of one loco - 12 to 14 crore (EMD)

- 8 crore (ALCO)

- Weight of one loco - 121 ton

- Fuel consumption; At full load - 540 lt/hr.

Idle load - 40 lt/hr.

- Max. Speed - 160 Km/hr.

- Dia. of wheel - 1092 mm

- Wheel to wheel distance - 1596.5 mm

- Length of under frame - 19962 mm

DIESEL ELECTRIC LOCOMOTIVE

In a diesel - electric locomotive, the diesel engine drives an electricalgenerator or alternater whose output provides power to thetraction motors. There is no Mechanical connection between the engine and the wheels.

CLASSIFICATION OF LOCOMOTIVES

- Locos, except the older steam ones, have classification codes thatidentify them. This codes is of the formWDG5A "| Gauge || power || load || series || subtype |"

- THE FIRST LETTER (Gauge)W - Indian broad gauge Y - Meter gaugeZ - Narrow gauge (2.5 ft)N - Narrow gauge (2 ft)

- THE SECOND LETTER (Motive power)D - DieselC - DC electric ( can run under DC traction only)

A - AC electric ( can run under AC traction only)CA - Both DC and AC ( can run under both AC and DC

traction)B - Battey electric locomotive ( rare)

- THE THIRD LETTER (Load type)G - GoodsP - passengerM - mixed traffic; both goods and passengerS - used for shuntingU - electric multiple units ( E.M.U )R - Railcars

- THE FOURTH LETTER ( Series)The series digit identifies the horsepower range of thelocomotive. Example. For the series Letter '3' means that thelocomotive has power over 3000 HP but less than 4000HP.

- THE FIFTH LETTER (Subtype)An optional letter or number that indicates some smallervariations in the basic model.For Ex. 'A' for 100 HP

'B' for 300 HP

PRODUCTS

WDG-5 - High adhesion Diesel-electric 5500 HP main line heavy goods service locomotive, with GM ( AC-AC traction)

WDG-4D - High adhesion Diesel-electric 4500 HP main line heavy goods service locomotive, with GM ( AC-AC traction)

WDP-4D - High adhesion Diesel-electric 4500 HPmain line heavy pessengerservice locomotive, with GM ( AC - AC traction)

WDG3A - 3100 HP main line heavy goods servicelocomotive, with uprated 16cylinder ALCO engine ( AC -DC traction )

WDS6 - 1350 HP Diesel-

electric shunting/short

haul locomotive with 6

cylinder.

2.4 MW DG Sets - 2.4 MW

DG Set using 16 cylinder,

3600 HP ALCO Diesel

Engine.

PRODUCTION SHOPS AT DLW

1. Block Division 2. Engine Division 3. Loco Division

1. BLOCK DIVISION

Heavy weld shopHeavy Machine shop

2. ENGINE DIVISION

Engine erection shop Engine testing shop Light Machine shop Sub Assembly shop Rotor shopHeat treatment shopTurbo section

3. LOCO DIVISION

Loco Frame shop Pipe shop Truck and Machine shopTraction Assembly shop Sheet Metal shop Loco Assembly shop Loco Paint shop Loco Test shop

TYPES OF MACHINES USED AT DLW

1. Conventional Machine2. NC Machine 3. CNC Machine

- CONVENTIONAL MACHINE :It is a simple machine which is now an Old technique.

- NUMERICAL CONTROL MACHINE :Numerical control is defined as a system in which theactions of the machines are controlled by the Insertion ofthe numerical data. In other words number Controls theaction.

COMPUTERISED NUMERICALLY CONTROLLED MACHINE

- In CNC the control system further energized With a mini computer or a post processor.

- The control unit stores the programmed Information of the workpiece, the travel Limits, collision zones and the diagnosticinformation etc. it also gives a feedback to The operator about thecurrent position and distance to be travelled etc.

- CNC Machine have ability to edit or alter the existing program inno time.

THANKS