The document discusses different types of diesel locomotives used on Indian Railways. It provides information on the introduction year, production numbers, specifications and characteristics of various locomotives models including YDM4, WDS6/AD, WDM2C, WDP1, WDG2/3A, WDP2, WDG4, and WDM3D. The key details provided for each locomotive include its installed power, axle load, wheel arrangement, maximum speed, fuel tank capacity, brake system and diesel engine/transmission components.

1. Different types of
DIESEL
LOCOMOTIVES
in use on the Railways
ANIL KUMAR SINGH
Asst. Production Engineer/Tooling,
DLW Varanasi

2. Rolling Stock on Indian Railways
(Source : Indian Railways Year Book 2008-09)
Locomotives Diesel
Electric
Steam
Total
4,963
3,586
43
8592
Coaching
Vehicles
Mainline
DMU
EMU
Total
50,282
773
6,241
57,296
?(2007-08:40,734)
?
Wagons Total 2,11,763

3. LOCOMOTIVES INTRODUCED
(In India)
STEAM LOCOMOTIVE - 1853
ELECTRIC LOCOMOTIVE - 1925
DIESEL LOCOMOTIVE - 1957

4. DIESEL LOCOMOTIVES
IN USE
ON THE RAILWAYS

5. YDM4
• Year Introduced 1968-69
• Nos. Produced - 609

6. General Characteristic (YDM4)
 Installed Power
 Axle Load
 Gauge
 Wheel arrangement
 Wheel diameter
 Height
 Width
 Overall Length (Over
Buffer Beam)
 Weight
 Max tractive effort
 Maximum speed
 Fuel tank capacity
 Locomotive Control
1350 HP
12 T
1000 mm
Co-Co
965 mm
3407 mm
2730 mm
13515mm
72 T
18.94 T
96 Kmph
3000 lts
3-Field Excitation

7. YDM4
Truck Brakes
Diesel Engine Transmission
 6 Cylinder DLW 251D, 4 stroke
 Injection System – Direct Injector
 Governor – Woodward
 Compression Ratio- 12.5 : 1
 Lube Oil Sump Capacity – 530
Liter
 Electrical DC -DC
 6 Traction motor ( 3 per bogie)
 Suspension – Axle hung / nose
suspension
 Gear Ratio – 92:19
 Tri-mount CO-CO Steel Cast
bogie
 Adhesion – 0.263
 WABCO, 28 LV-I System
 Air , Hand, Dynamic
 Air , Vacuum

8. WDS6/AD
• Year Introduced 1974-75
• Nos. Produced - 564

9. General Characteristic (WDS6/AD)
 Installed Power
 Axle Load
 Gauge
 Wheel arrangement
 Wheel diameter
 Height
 Width
 Overall Length (Over
Buffer Beam)
 Weight
 Max tractive effort
 Maximum speed
 Fuel tank capacity
 Locomotive Control
1350 HP
20 / 21T
1676 mm
Co-Co
1092 mm
4027mm
3022 mm
16150 mm
120 / 126 T
34 /35.7 T
65 Kmph
5000 lts
E-Type Excitation

10. WDS6 / AD
Truck Brakes
 High adhesion Fabricated Co-Co
bogie
 Adhesion – 0.35
 Panel Mounted IRAB-1 Brake
system
 Air , hand , Dynamic brake
 Pure air brake
Diesel Engine Transmission
 6 Cylinder DLW 251D-6 Cyl. in-line,
4 stroke, turbocharged
 Injection System – Direct Injector
 Governor – Woodward
 Compression Ratio- 11.75 : 1
 Lube Oil Sump Capacity – 530
Liter
 Electrical AC-DC
 6 Traction motor ( 3 in per bogie)
 Suspension – Axle hung / nose
suspension
 Gear Ratio – 74 : 18

11. WDM2C
• Year Introduced 1994-95
• Nos. Produced - 142

12. General Characteristic (WDM2C)
 Installed Power
 Axle Load
 Gauge
 Wheel arrangement
 Wheel diameter
 Height
 Width
 Overall Length (Over
Buffer Beam)
 Weight
 Max tractive effort
 Maximum speed
 Fuel tank capacity
 Locomotive Control
3100 HP
18.8 T
1676 mm
Co-Co
1092 mm
4115 mm
2864 mm
15863 mm
112.8 T
30.45 T
120 Kmph
5000 lts
E-Type Excitation

13. WDM2C
Truck Brakes
 Tri-mount CO-CO Steel Cast
bogie
 Adhesion – 0. 27
 Panel mounted IRAB-1 Brake
system
 Air , Hand, Dynamic brake
 Air , Vacuum
Diesel Engine Transmission
 16 Cylinder DLW 251C, 4
stroke, turbocharged
 Fuel Efficient Engine
 Injection System – Direct
Injector
 Governor – Woodward
 Compression Ratio- 11.75:1
 Lube Oil Sump Capacity – 1025
Liter
 Electrical AC-DC
 6 Traction motor ( 3 in parallel
per bogie)
 Suspension – Axle hung / nose
suspension
 Gear Ratio – 18:65

14. WDP 1
• Year Introduced 1995-96
• Nos. Produced - 69

15. General Characteristic (WDP 1)
 Installed Power
 Axle Load
 Gauge
 Wheel arrangement
 Wheel diameter
 Height
 Width
 Overall Length (Over
Buffer Beam)
 Weight
 Max tractive effort
 Maximum speed
 Fuel tank capacity
 Locomotive Control
2300 HP
20 T
1676 mm
Bo-Bo
1092 mm
4088 mm
2864 mm
14810 mm
80 T
20 T
120 Kmph
3000 lts
E-Type Excitation

16. WDP 1
Truck Brakes
 BO-BO flexi-coil Bogie with two
stage suspension – Coil springs
 Adhesion – 0.25
 Panel Mounted 28LAV-1 Twin
Type Dual Brake System
 Air , Vacuum ,
 Dual brake , hand
Diesel Engine Transmission
 12 Cylinder DLW 251C
(Uprated), 4 stroke,
turbocharged
 Fuel Efficient Engine
 Injection System – Direct Injector
 Governor – Woodward
 Compression Ratio- 11.75 : 1
 Lube Oil Sump Capacity – 760
Liter
 Electrical AC-DC
 4 Traction motor ( 2 in per bogie)
 Suspension – Axle hung / nose
suspension
 Gear Ratio – 18:65

17. WDG2/3A
WDG2 WDG3A
• Year Introduced 1995-96
• Nos. Produced – 1183 (upto July-2010)

18. General Characteristic (WDG2/3A)
 Installed Power
 Axle Load
 Gauge
 Wheel arrangement
 Wheel diameter
 Height
 Width
 Overall Length (Over
Buffer Beam)
 Weight
 Max tractive effort
 Maximum speed
 Fuel tank capacity
 Locomotive Control
3100 HP
20.5 T
1676 mm
Co-Co
1097 mm
4162 mm
3016 mm
17840 mm
123 T
40.6T / 37.9 T
100 Kmph
6000 lts
E Type Excitation /
Micro-processor

19. WDG2/3A
Truck Brakes
 High adhesion Fabricated Co-Co
bogie
 Adhesion – 0.33
 Panel Mounted IRAB-1 Brake
system
 Air , hand , Dynamic brake
 Pure air brake
Diesel Engine Transmission
 16 Cylinder DLW 251C, 4 stroke,
turbocharged
 Fuel Efficient Engine
 Injection System –Direct Injector
 Governor – Woodward
 Compression Ratio- 11.75:1
 Lube Oil Sump Capacity – 1270 /
1025Liter
 Electrical AC-DC
 6 Traction motor ( 3 in parallel per
bogie)
 Suspension – Axle hung / nose
suspension
 Gear Ratio – 18:74

20. WDP2
• Year Introduced 1998-99
• Nos. Produced - 44

21. General Characteristic (WDP2)
 Installed Power
 Axle Load
 Gauge
 Wheel arrangement
 Wheel diameter
 Height
 Width
 Overall Length (Over
Buffer Beam)
 Weight
 Max tractive effort
 Maximum speed
 Fuel tank capacity
 Locomotive Control
3100 HP
19.5 T
1676 mm
Co-Co
1092 mm
4081 mm
3000 mm
17900 mm
117.0 T
29.25 T
160 Kmph
6000 lts
E –Type Excitation

22. WDP2
Truck Brakes
 Fabricated flexi coil MK-V Co-Co
Bogie
 Adhesion – 0.25
 Panel mounted IRAB-1 system
 Air , hand, Dynamic
 Pure Air brake
Diesel Engine Transmission
 16 Cylinder DLW 251C (Uprated),
4 stroke, turbocharged
 Fuel Efficient Engine
 Injection System –Direct Injector
 Governor – Woodward
 Compression Ratio- 11.75 : 1
 Lube Oil Sump Capacity – 1025
Liter
 Electrical AC-DC
 6 Traction motor ( 3 in per bogie)
 Suspension – Axle hung / nose
suspension
 Gear Ratio – 22:61

23. WDG4
• Year Introduced 1999-2000
• Nos. Produced – 308 (upto July-2010)

24. General Characteristic (WDG4)
 Installed Power
 Axle Load
 Gauge
 Wheel arrangement
 Wheel diameter
 Height
 Width
 Overall Length (Over
Buffer Beam)
 Weight
 Max tractive effort
 Maximum speed
 Fuel tank capacity
 Locomotive Control
4000 / 4500 HP
21 T
1676 mm
Co-Co
1092 mm
4201 mm
3127 mm
19964 mm
126 T
54 T
100 Kmph
6000 lts
EM 2000 with/without SIBAS-16
Traction Control /MAS 696

25. WDG4
Truck Brakes
 High adhesion HTSC ( High
Tensile Steel Cast) truck of bogie
 Adhesion – 0.42
 Electronic Air Brake System
( KNORR-NYAB-Computer
Controlled Braking)
 Air , hand , dynamic brake
 Pure air brake
Diesel Engine Transmission
 16 Cylinder 710 G3B, 2 stroke,
turbocharged – after cooled
 Fuel Efficient Engine
 Injection System – Direct Unit
Injector
 Governor – Woodward
 Compression Ratio- 16:1
 Lube Oil Sump Capacity – 950
Ltrs
 Electrical AC-AC
 6 Traction motor ( 3 in parallel per
bogie)
 Suspension – Axle hung / taper
roller bearing
 Gear Ratio – 90:17

26. WDP4 /4B
• Year Introduced 2002-03 / 2010-11
• Nos. Produced – 91 / 08 ( upto July-2010)

27. General Characteristic (WDP4 /4B)
 Installed Power
 Axle Load
 Gauge
 Wheel arrangement
 Wheel diameter
 Height
 Width
 Overall Length (Over Buffer
Beam)
 Weight
 Max tractive effort
 Maximum speed
 Fuel tank capacity
 Locomotive Control
4000 / 4500HP
19.5 / 20.2 T
1676 mm
A-A-I I-A-A / CO-CO
1092 mm
4201mm
3127 / 3250mm
19964 mm
117 / 121.2T
27 / 38T
160 / 130Kmph
4000 lts
EM 2000 with/without SIBAS-16
Traction Control /MAS 696

28. WDP4 /4B
Truck Brakes
 High adhesion HTSC ( High
Tensile Steel Cast) truck or bogie
 Adhesion – 0.42
 Electronic Air Brake System
( KNORR-NYAB-Computer
Controlled Braking)
 Air , hand , dynamic brake with
fully blended with automatic
brakes
 Pure air brake
Diesel Engine Transmission
 16 Cylinder 710 G3B, 2 stroke,
turbocharged – after cooled
 Fuel Efficient Engine
 Injection System – Direct Unit
Injector
 Governor – Woodward
 Compression Ratio- 16:1
 Lube Oil Sump Capacity – 1073 Lts
 Electrical AC-AC
 4 Traction motor ( 3 in parallel
per bogie)
 Suspension – Axle hung / taper
roller bearing
 Gear Ratio – 77:17

29. WDM3D
• Year Introduced 2003-04
• Nos. Produced – 236 ( upto July-2010)

30. General Characteristic
 Installed Power
 Axle Load
 Gauge
 Wheel arrangement
 Wheel diameter
 Height
 Width
 Overall Length (Over
Buffer Beam)
 Weight
 Max tractive effort
 Maximum speed
 Fuel tank capacity
 Locomotive Control
3300 HP
19.5 T
1676 mm
Co-Co
1097mm
4162 mm
3016 mm
17350 mm
117 T
38.6 T
120 Kmph
5000 lts
Microprocessor

31. Truck Brakes
 High adhesion Fabricated Co-Co
bogie
 Adhesion (μ)– 0.33
 Panel mounted IRAB-1 Brake
system
 Air , Hand, Dynamic brake
 Pure Air Brake system
Diesel Engine Transmission
 16 Cylinder 251 C- (Uprated)
Engine, 4 stroke, turbocharged
 Fuel Efficient Engine
 Injection System – Direct Injector
 Governor – Woodward
 Compression Ratio- 11.75:1
 Lube Oil Sump Capacity – 1025
Liter
 Electrical AC-DC
 6 Traction motor ( 3 in parallel per
bogie)
 Suspension – Axle hung / nose
suspension
 Gear Ratio – 18:65

32. Thank you