List of diesel locomotives of India
This article lists the diesel locomotives that have operated or are operating on Indian Railways.
Classification[edit]
Locomotives were classified by track gauge, motive power, function and power (or model number) in a four- or five-letter code. The first letter denotes the track gauge. The second letter denotes motive power (diesel or electric), and the third letter denotes use (goods, passenger, mixed or shunting). The fourth letter denotes a locomotive's chronological model number.
In 2002, a new classification system was adopted. For newer diesel locomotives, the fourth letter denotes their horsepower range. Not all diesel locomotives were reclassified, and the fourth letter continues to denotes their model number.
A locomotive may have a fifth letter, generally denoting a technical variant, subclass or subtype: a variation in the basic model or series, or a different motor or manufacturer. Under the new system, the fifth letter further refines horsepower in 100-hp increments: A for 100 hp, B for 200 hp, C for 300 hp and so on. A WDP-3A is a 3,100 hp (2,300 kW) locomotive, and a WDM-3F is 3,600 hp (2,700 kW).
The system does not apply to steam locomotives, which are no longer used on main lines. They retain their original class names, such as M- or WP-class.
Syntax[edit]
- First letter (gauge):
- W – Broad gauge (wide) – 5 ft 6 in (1,676 mm)
- Y – Metre gauge (yard) – 1,000 mm (3 ft 3+3⁄8 in)
- Z – 2 ft 6 in (762 mm) narrow gauge
- N – 2 ft (610 mm) narrow (toy) gauge
- Second letter (motive power):
- D – Diesel
- C – DC electric (DC overhead line)
- A – AC electric (AC overhead line)
- CA – DC and AC (AC or DC overhead line); CA is considered one letter
- B – Battery (rare)
- Third letter (job type):
In WDM 3A, W denotes broad gauge; D denotes diesel power; M denotes mixed use (goods and passenger service), and 3A denotes 3,100 hp (2,300 kW) (3,000 + 100). In WAP 5, W is broad gauge; A is AC electric; P is passenger service, and 5 indicates that the locomotive is the fifth model used.
Broad-gauge locomotives[edit]
Broad-gauge diesel classification codes are:
- WDM – Wide diesel mixed
- WDP – Wide diesel passenger
- WDG – Wide diesel goods
- WDS – Wide diesel shunter
Mixed class (WDM series)[edit]
Name | Manufacturer | Wheel | Quantity
Built |
Built year(s) | Power | Current Status | Preserved units | Comments | Picture |
---|---|---|---|---|---|---|---|---|---|
WDM-1 | ALCO | Co-Co | 100 | 1957-1959 | 1950 HP | Retired | 1 | First mainline diesel locomotive | |
WDM-2 | ALCO/BLW | Co-Co | 1440 | 1962–1998 | 2600 HP | In service | 9 | A few still in service | |
WDM-2G | BLW | Co-Co | 2 | 2013 | 2400 HP | In Service | File:ET WDM22G.jpg | ||
WDM-3 | Henschel | Bo-Bo | 8 | 1962-1970 | 2500 HP | Retired | None | File:WDM-3.jpg | |
WDM-3A | BLW | Co-Co | 1402 | 1994–2015 | 3100 HP | In service | 1 Earmarked | File:TKD WDM3A 16377.jpg | |
WDM-3B | BLW | Co-Co | 8, all rebuilt back to WDM-3D | 2005-2006 | 3100 HP | In service | All rebuilt back to WDM-3D | File:WDM3B.jpg | |
WDM-3C | BLW | Co-Co | 10 | 2002 | 3300 HP | In service | None | All rebuilt back to WDM-3A | File:KTE WDM3C.jpg |
WDM-3D | BLW | Co-Co | 500 | 2003-2016 | 3300 HP | In service | File:RTM WDM3D.jpg | ||
WDM-3E | BLW | Co-Co | 8 | 2008 | 3500 HP | In service | |||
WDM-3F | BLW | Co-Co | 3 | 2008 | 3600 HP | In service | File:GY WDM3F.jpg | ||
WDM-4 | GM | Co-Co | 72 | 1961-1962 | 2600 HP | Retired | 2 | ||
WDM-6 | BLW | Bo-Bo | 2 | 1981-1982 | 1350 HP | Retired | 2 | Both units earmarked for preservation | File:WDM-6.jpg |
WDM-7 | BLW | Co-Co | 15 | 1987–1989 | 2000 HP | In service | 1 Earmarked | Currently used for shunting uses only |
Passenger class (WDP series)[edit]
Name | Manufacturer | Wheel
Arr |
Quantity
Built |
Built year(s) | Power | Current Status | Preserved units | Comments | Picture |
---|---|---|---|---|---|---|---|---|---|
WDP-1 | BLW | Bo-Bo | 69 | 1995–1999 | 2300 HP | In service | File:TKD WDP1.jpg | ||
WDP-3A | BLW | Co-Co | 69 | 1998–2001 | 3100 HP | In service | File:KYN WDP-3A.jpg | ||
WDP-4 | EMD/BLW | Bo1-1Bo | 100 | 2001–2010 | 4000 HP | In service | File:WDP4 20008.jpg | ||
WDP-4B | BLW | Co-Co | 86 | 2010–2014 | 4500 HP | In service | File:TKD WDP4B.jpg | ||
WDP-4D | BLW | Co-Co | 525 | 2010–2018 | 4500 HP | In service | File:KYN WDP4D.jpg |
Goods class (WDG series)[edit]
Name | Manufacturer | Wheel
Arr |
Quantity
Built |
Built year(s) | Power | Current Status | Preserved units | Comments | Picture |
---|---|---|---|---|---|---|---|---|---|
WDG-3A | BLW | Co-Co | 1164 | 1994–2015 | 3100 HP | In service | File:KYN WDG3A.jpg | ||
WDG-3B | BLW | Co-Co | 4 | 2004 | 3200 HP | In service | File:WDG3B.jpg | ||
WDG-3C | BLW | Co-Co | 1 | 2001 | 3300 HP | In service | File:WDG3C.jpg | ||
WDG-3D | BLW | Co-Co | 1 | 2001 | 3400 HP | In service | File:WDG3D.jpg | ||
WDG-4 | EMD/BLW | Co-Co | 1188 | 1997–2017 | 4000 HP | In service | File:WDG4-4.jpg | ||
WDG-4G | GE | Co-Co | 291 | 2017–present | 4500 HP | In service | File:ROZA WDG4G.jpg | ||
WDG-4D | EMD | Co-Co | 583 | 2013–2017 | 4500 HP | In service | File:ABR WDG4D.jpg | ||
WDG-5 | EMD | Co-Co | 7 | 2012-2018 | 5500 HP | In service | File:SBI WDG5.jpg | ||
WDG-6G | GE | Co-Co | 43 | 2019–present | 6000 HP | In service | File:GIMB WDG6G.jpg |
Shunter class (WDS series)[edit]
Name | Manufacturer | Wheel
Arr |
Quantity
Built |
Built year(s) | Power | Current Status | Preserved units | Comments | Picture |
---|---|---|---|---|---|---|---|---|---|
WDS-1 | GE | Bo-Bo | 15 | 1944-1945 | 386 HP | Retired | 1 | India's first diesel locomotive | |
WDS-2 | Kraus
Maffei |
C | 30 | 1954-1955 | 440 HP | Retired | |||
WDS-3 | Maschi-
nenbau Kiel |
C | 7 | 1961 | 618 HP | Retired | File:WDS-3.jpg | ||
WDS-4 | CLW | C | 27 | 1967-1969 | 600 HP | Few are still in service | 4 | A few still in service | |
WDS-4A | CLW | C | 5 | 1968 | 660 HP | Retired | |||
WDS-4B | CLW | C | 450 | 1969 | 700 HP | Retired | |||
WDS-4C | CLW | C | 7 | 1976-78 | 700 HP | Retired | File:WDS-3.jpg | ||
WDS-4D | CLW | C | 120 | 1984-90 | 700 HP | Retired | |||
WDS-5 | ALCO/BLW | Co-Co | 21 | 1967 | 1065 HP | In service | A few still in service | ||
WDS-6 | BLW | Co-Co | 270 | 1975– | 1400 | In service | 2 Earmarked | File:CLA WDS6.jpg | |
WDS-6AD | BLW | Co-Co | 270 | 1975– | 1400 | In service | 2 Earmarked | File:WDS-6AD.jpg | |
WDS-8 | CLW | Bo-Bo | 5 | 1979-1982 | 800 HP | Retired | File:WDS-8.jpg |
Meter-gauge locomotives[edit]
Metre-gauge diesel classification code is:
- YDM - Metre gauge diesel mixed
Mixed class (YDM series)[edit]
Name | Manufacturer | Wheel
Arr |
Quantity
Built |
Built year(s) | Power | Current Status | Preserved units | Comments | Picture |
---|---|---|---|---|---|---|---|---|---|
YDM-1 | NBL | B-B | 20 | 1954-56 | 700 | Retired | |||
YDM-2 | CLW | B-B | 41 | 1986-90 | 700 | Retired | File:YDM-2.jpg | ||
YDM-3 | GM | 1'Bo'Bo'1 | 30 | 1961-62 | 1390 | Retired | File:YDM-3.jpg | ||
YDM-4 | ALCO/BLW | Co-Co | 695 | 1961–1993 | 1400 | In service | File:SABI YDM4.jpg | ||
YDM-5 | GM | Co-Co | 25 | 1963-1964 | 1390 | Retired |
Narrow-gauge locomotives[edit]
Narrow-gauge diesel classification codes are:
- ZDM - Narrow gauge 2 ft 6 in diesel mixed
- NDM - Narrow gauge 2 ft diesel mixed
Mixed class (ZDM series)[edit]
Name | Manufacturer | Wheel
Arr |
Quantity
Built |
Built year(s) | Power | Current Status | Preserved units | Comments | Picture |
---|---|---|---|---|---|---|---|---|---|
ZDM-1 | Arn. Jung | B+B | 5 | 1955 | 290 | Retired | |||
ZDM-2 | Maschi-nenbau Kiel | B-B | 25 | 1964-65 | 700 | Retired | |||
ZDM-3 | CLW | B-B | 40 | 1970-82 | 700 | In service | |||
ZDM-4/4A | CLW | 1-B-B-1 | 10/39 | 1975-77/1982-90 | 700 | In service | |||
ZDM-5 | CLW | B-B | 41 | 1989+ | 450 | In service |
Mixed class (NDM series)[edit]
Name | Manufacturer | Wheel
Arr |
Quantity
Built |
Built year(s) | Power | Current Status | Preserved units | Comments | Picture |
---|---|---|---|---|---|---|---|---|---|
NDM-1 | Arn. Jung | B+B | 7 | 1955 | 290 | In service | |||
NDM-5 | CLW | B-B | 11 | 1987-89 | 450 | In service | |||
NDM-6 | (SAN) Engg. and Loco Co. | B | 6 | 1997 | 335 | In service |