Introduction To Diesel Locomotive

S K SEN / PROF(D)/IRIMEE

Topics that will be covered

1. Evolution of Diesel Loco in I.R2. Types of Diesel Locomotive3. Comparison of Starting Capabilities4. Lay Out and important Components.5. I. C. Engines in IR locos

6. Development in Diesel Locomotive7. Reliability issues & Maintenance schedule.8. Safety Issues

9. Diesel Loco Shed Management 10. DEMU

1. Evolution of Diesel Loco in I.R Initially imported steam loco

1st loco building in India- 1865- Byculla Shops of Bombay of G.I.P.Rly.

Loco builders in India: Byculla shops, Parel shops, Permabur, Allahabad Charbagh, Jamalpur, Ajmer kworkshop(MG) TELCO, CLW, DLW.

1. Evolution of Diesel Loco in I.R (contd.)

Till 1955- only for shunting Manufacturing Unit: DLW 1962 – TOT for ALCO Locomotive 1st production: 1963-64 1995 – TOT for GM Locomotive

Development in DLW Production

ALCO 251 B engine production at DLW 1962-1990 WDM2 LOCOMOTIVE

Development of 16 cylinder 2600 HP Fuel Efficient DLW engine

May’90 WDM2 FE LOCOMOTIVEIst loco No.16415 Aug.’1992

Development of 16 cylinder 3100 HP Power Upgraded DLW engine

Oct.’93 WDM2C, WDG2 & WDP2Ist loco No.14001 Aug.’1994 Renamed as WDM3A WDG3A & WDP3A

Development of 12 cylinder 2300 HP Power Upgraded DLW engine

Feb.’95 WDP1 LOCOMOTIVE Ist loco No.15001 April’1995

Development of 16 cylinder 3300 HP Power Upgraded DLW engine

Oct.’2001 WDM3C, WDM3D LOCOMOTIVE Ist loco No. 14962 June’’2002

Development of 16 cylinder 3600 HP Power Upgraded DLW engine

Jan.’2002/2009 DG Set/WDM3F

Manufacture of 16 cylinder 4000 HP GM loco 2002 WDG4 & WDP4

Development of upgraded 16 cylinder 4500 HP EMD loco 2008 WDP4A

Development of upgraded 16 cylinder 4500 HP Dual Cab EMD loco

Sept’ 2010 WDP4D

Sl.No.

Parameters WDM2 WDM2c/ WDM3A

WDP1 WDP2 WDG2/ WDG3A

WDG4/WDP4 WDP4A/WDP4D

1 Year Put in Service 1962 1994 1995 1998 1995 2000/2001 2008/2010 2 HP 2600 3100 2300 3100 3100 4000 4500 3 No. Of Cylinder 16 16 12 16 16 16(2 stroke) 16(2 stroke) 4 HP/ Cyl. 165 195 195 195 195 250 280 5 Loco Weight (Tonnes) 112.8 Same 80 117 123 129 129 6 Axle Load (Tonnes) 18.8 Same 20 19.5 21 21.5 21.5 7 Loco Numbering. 18,17,16 14001 15001 15501 14501 12001 8 Maximum Speed

(KMPH) 120 Same Same 160 100 100/ 160 160

9 Brake 28 LAV1 28 LAV1 IRAB1 IRAB1 IRAB1 CCB CCB 10 Wheel Arrangement Co-Co Co-Co Bo-Bo Co-Co Co-Co Co-Co/ Bo1-1Bo Co-Co 11 Suspension Single stage Single

stage Two stage

Two stage

Two stage

Two stage Two stage

2. TYPES OF MAINLINE DIESEL LOCO

3. HOLDING OF DIESEL LOCOS

BG Locos – 4168 MG Locos – 511 Total (incl. NG) - 4816

Locos of ALCO family– 4.2 Cr.

Locos of GM family – 13.5 Cr.

4. COST OF DIESEL LOCO

Features of GM Loco Highest starting capability Higher reliability and availability Reduced maintenance Computerised Engine, Propulsion

and brake control. AC-AC traction

Comparison of Starting Capabilities

Starting capability

LocoType

Power Weight Adhesion

StartingT.E

Startingload in 1in 150(no. ofWagons)

WDM2 2636 112.8 0.27 30.45 33WDM2c 3140 112.8 0.27 30.45 33WDG2 3140 126 0.337 42.5 47GMLoco

4132 126 0.42 53 >58

WAG7 5000 123 0.34 42 45WAG9 6120 123 0.38 46.9 52

WDG2 LOCO

WDP2 LOCO

WDG4 LOCO

WDP4 LOCO

3. Lay Out and important Components

Engine (251B,251D etc) Traction Equipment (T.G, T.M etc) Superstructure (Foot plate, Hood, Cab,Coupling

etc) Bogie (CO-CO etc) Transmission system (DC-DC,DC-AC,AC-AC) Auxiliaries (Exhauster, air brake system, cooling

system etc) Control equipment ( propulsion control, excitation,

transition etc)

LOCO LAYOUT

4. IC ENGINES IN IR LOCOS

4- STROKE CYCLE (ALCO/ DLW/MAK)

2- STROKE CYCLE (GM)

POWER PACK

CRANK SHAFT

5. Development in Diesel Locomotive

Increase in power per Cylinder.

Reduction in frequency of schedule

Fuel Efficient & Lube efficient Engine.

High Adhesion Loco.

160 KMPH Indigenous WDP2 Loco.

TARGET FOR UPGRADATION

6. Reliability issues & Maintenance schedule. Trip schedule enhanced from 7 days to

14 days/ 21 days/30 days/40 days (T40) Yearly Schedule in 24 months (M24) 3 yearly Schedule in 4 years (M48). POH 8 years

The above modifications in Schedule is being made with the improvement in its major components, like:

High performance TSC. Roller Suspension Bearing Long life Filters & other modifications

7. Safety Issues

Speed Recorders.

Audio Visual Indication

Release Run Feature and automatic switching on of Flasher during train parting

8. Diesel Loco Shed Management

Facilities

Performance Parameters

9. DEMU/ DHMU

Self propelled coach, very popular and economic for suburban traffic

One unit: Power Car+Trailing Car)Driving Trailer Car (operated in 2 or 3 unit rake)

Power: 700,1400 HP Manufacturer : ICF Engine: Kirloskar Cummins

DEMU Contd..

Transmission: Hyd. Transmission or Electric AC- DC

electrical equipment: BHEL or Crompton Grieves etc

bogie: BO-BO

1400 HP DEMU: 4 unit rakes , Speed 100 KMPH, Air Spring, Faster Acceleration