Indian railways diesel locomotive

Notes: No sanding. 15538 was DLW’s last loco of the millenium and given a silver and navy livery.

Apparently, the “251C” engine quoted refers to the DLW upgraded version of the Alco 251B and differs from a true Alco “C” variant.
They are “goverened” to 100km/h.

WDP₄

Builder	20000 – 20009 – GMDD
Build date	2000 – 2001
Builders code/model No.	GT46PAC
No. Built	10
Engine	GM-EMD 12-710 (4,000hp)
Transmission	Electric
Brakes	Dual train and dynamic
Wheel arrangement	1-Bo’ Bo-1’
Maximum speed	160 kmh
Weight	119t
Train heating	?

Notes: Arrived in India during June 2001.

WDG₂ (Shakti/Shaktiman, Gajraj)

Builder	DLW
Build date	7/1995 – still in production
Builders code/model No.	WDG2 Developed from Alco DL560/RSD29
No. Built	467+ (still in production)
Engine	Alco 251C-16 upgraded (3,100hp UIC, 2,900hp site rating @ 1050/400 rpm) Napier NA 295 IR or ABB VTC304-15 turbocharger
Transmission	Electric, BHEL TA 10102 CW altenator
Brakes	Air train (and vacuum?) and dynamic
Wheel arrangement	Co-Co (High adhesion)
Maximum speed	100 kmh
Weight	123t
Train heating	None

Notes: Apparently, the “251C” engine quoted refers to the DLW upgraded version of the Alco 251B and differs from a true Alco “C” variant.

14944 was fitted with cab air conditioning – apparently the first one.
WDG_3C (Cheetah)

Builder	DLW
Build date	2002 – still in production
Builders code/model No.	WDG3C Developed from Alco DL560/RSD29
No. Built	1 (still in production)
Engine	Alco 251C-16 upgraded (3,100hp UIC, 2,900hp site rating @ 1050/400 rpm) Napier NA 295 IR or ABB VTC304-15 turbocharger
Transmission	Electric, BHEL TA 10102 CW altenator
Brakes	Air train and dynamic
Wheel arrangement	Co-Co (High adhesion)
Maximum speed	100 kmh
Weight	123t
Train heating	None

Notes: Apparently, the “251C” engine quoted refers to the DLW upgraded version of the Alco 251B and differs from a true Alco “C” variant.

WDG₄

Builder	12001 – 12013 – GMDD 12014 – 12021 – DLW (PKD) 12022 – 12XXX – DLW
Build date	12001 – 12013 - ??, 12014 – 12021 – 1999 DLW (PKD),
Builders code/model No.	GT46MAC
No. Built	21 (more due to be built during 2001)
Engine	GM-EMD 16-710 G3B (4,073hp AAR @ 900/200 rpm) EMD model “G” turbocharger
Transmission	Electric, TA-17-CA6A altenator
Brakes	Loco: air. Train: air and dynamic
Wheel arrangement	Co-Co (Hi-Adhesion)
Maximum speed	100 kmh
Weight	126t
Train heating	None

Notes:
Features

Fabricated rigid design under frame with two-stage suspension. High traction, high speed 3 axle (HTSC) cast truck frame giving high adhesion performance (43%) through Super Series wheel slip control system. Starting tractive effort 540kN can start a load of 4750t (58 BOXN wagons) on 1-in-150 gradiant with a balancing speed of 85 kmh as compared to 69 for WDG-2 locos with 58 Box 'N' load on level track.
Microprocessor controlled with fault display and complete self diagnostics which can be downloaded to a lap-top computer. Computer controlled brake system (KNORR-NYAB-CCB), motor driven cooling fans and dust bin/inverter blowers, above 90% traffic availability.
Multiple operation allows up to 4 locomotives.
18-20% fuel saving over WDM-2, Lube to fuel oil ratio 0.5 as compared to 1.5 for Alco. 90 day trip schedule as compared to 7-10 days for Alco. Loco POH after 16 years, engine overhaul six years. Higher safety with 270 kN braking effort and dynamic brakes effective to near zero kmph. Self load arrangement for a full engine test without external load box. AC traction motor doubles traction motor life.
21t axle load, 126 t loco wt, 52t max tractive effort. 90:17 gear ratio, 43" wheel dia, electronic air brake system, locomotive control EM-2000 with SIBAS-16 traction control unit, Gardner Denver air compressor, water cooled, 6000 liters fuel tank cap, 21.3 m over all length.
The first loco built by DLW finished end of March/beginning of April 2002. Loco has 55% of parts manufactured in India.
WDS₂

Builder	K-M
Build date	1954 - 1955
Builders code/model No.	?
No. Built	30
Engine	MAN W8V-17.5/22A, 400hp site rating (43.5C 600m)
Transmission	Hydraulic, Voith L-37-V
Tractive effort	Max: Main Line 9200kg Shunting: 15420kg (30% adh.) Cont. Main Line 7300kg @ 7.55 kmh, Shunting 14750kg @3.86 kmh (30% adh.)
Brakes	Loco: air. Train: vacuum
Wheel arrangement	0-6-0
Maximum speed	54 kmh Main Line/28 kmh Shunting
Weight	51.4 tonnes
Axle loading	17.32 tonnes
Train heating	?

Notes:

WDS_{4, 4A, 4B and 4D}
The "No. built" for these classes also include those built for the private sector. It is not clear how many were actually delivered to IR.
WDS₄

Builder	CLW
Build date	1968 - 1969
Builders code/model No.	WDS4
No. Built	27
Engine	Mak/CLW 6M 282 A(K), 600hp
Transmission	Hydraulic, Mak-Suri
Brakes	?
Wheel arrangement	0-6-0
Maximum speed	65 kmh Main Line/27 kmh Shunting
Weight	60 tonnes
Train heating	?

Notes:

WDS_4A

Builder	CLW
Build date	1968
Builders code/model No.	WDS4A
No. Built	5
Engine	Mak/CLW 6M 282 A(K), 660hp
Transmission	Hydraulic, Voith
Brakes	?
Wheel arrangement	?
Maximum speed	65 kmh Main line/38 kmh Shunting
Weight	60 tonnes
Train heating	?

Notes:

WDS_4B

Builder	CLW
Build date	1969 - 1997
Builders code/model No.	WDS4B
No. Built	432+
Engine	Mak/CLW 6M 282 A(K), 700hp
Transmission	Hydraulic, Suri
Brakes	?
Wheel arrangement	0-6-0
Maximum speed	65 kmh Main line/27 kmh Shunting
Weight	60 tonnes
Train heating	?

Notes:

WDS_4C

Builder	Mak
Build date	1961
Builders code/model No.	?
No. Built	7
Engine	Mak/CLW 6M 282 A(K), 700hp
Transmission	Hydraulic, Suri
Brakes	?
Wheel arrangement	0-6-0
Maximum speed	65 kmh Main line/27 kmh Shunting
Weight	60 tonnes
Train heating	?

Notes: Formerly class WDS₃. All rebuilt, reengined and reclassified during 1976 - 1978.

WDS_4D

Builder	CLW
Build date	1984 - 1987
Builders code/model No.	WDS4D
No. Built	118+
Engine	Mak/CLW 6M 282 A(K), 700hp
Transmission	Hydraulic, Voith
Brakes	?
Wheel arrangement	0-6-0
Maximum speed	60 kmh Main Line/25 kmh Shunting
Weight	60 tonnes
Train heating	?

Notes:

WDS₅

Builder	DLW (from kits supplied by Alco)
Build date	1967
Builders code/model No.	DL531B/RSD26
No. Built	21
Engine	Alco, 251B-6, 1065/994hp
Transmission	Electric
Brakes	?
Wheel arrangement	Co'Co'
Maximum speed	109 kmh
Weight	126 tonnes
Train heating	?

Notes: Prototype for WDS6.

WDS₆

Builder	DLW
Build date	1975 - ????
Builders code/model No.	WDS6
No. Built	252+???
Engine	Alco 251D-6, 1400/1328hp
Transmission	Electric,
Brakes	?
Wheel arrangement	Co'Co'
Maximum speed	71 kmh
Weight	120 - 129 tonnes
Train heating

Notes: Locos of this type supplied to IR apparently classified as WDS_6R.

DLW works shunters

Builder	DLW
Build date	1966 - 1967
Builders code/model No.	?
No. Built	3
Engine	250hp
Transmission	Hydraulic
Brakes	?
Wheel arrangement	0-4-0
Maximum speed	?
Weight	?
Train heating	?

Notes: Built for CLW, DLW and ICF. 1007 converted from metre gauge for use at DLW

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