WDG-6G is a class of diesel-electric locomotive used by the Indian Railways for freight duty. The locomotive is a higher power variant of the WDG-4G locomotive which was also designed by General Electric. The design platform is based on the GE Evolution Series and features a 4-stroke 16-cylinder fully turbocharged engine which delivers around 6,000 horsepower.[1]

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WDG-6G
Roza based WDG-6G (no. 69004) named "ANGAD" roaming light at Garhi Harsaru
Type and origin Power type Diesel-electric Designer GE Transportation India, Bengaluru Builder GE Transportation, Erie, Pennsylvania, Diesel Locomotive Factory, Marhowrah Model ES58ACmi Build date 2019 - present Total produced 62 as of October 2022
Specifications Configuration: ​  • AAR C-C  • Commonwealth Co-Co Gauge 1,676 mm (5 ft 6 in)Broad Gauge Bogies Co-Co Fabricated Bogie Wheel diameter New: 1,092 mm (43.0 in) Condemned: 1,016 mm (40.0 in) Pivot centres 14,224 mm (14.224 m) Length: ​  • Over couplers 22,313 mm (22.313 m) Width 3,200 mm (3.2 m) Height 4,227 mm (4.227 m) Axle load 23 t (23,000 kg) Loco weight 138,000 kg (138 t) Fuel type Diesel Fuel capacity 8,300 L (1,800 imp gal; 2,200 US gal) Sandbox cap. 170 L (37 imp gal; 45 US gal) Prime mover GE GEVO-16 Tier 1 Engine RPM:  • Maximum RPM 1050 rpm Engine type V16 Diesel engine, 4-stroke engine Aspiration turbocharged Displacement 15.7L per cylinder Traction motors 1 inverter per truck, AC traction motors Cylinders 16 Cylinder size 250 mm × 320 mm (9.8 in × 12.6 in) Transmission diesel electric Gear ratio 85:16 MU working Yes Loco brake Air, Dynamic Brake Train brakes Air Couplers CBC AAR Type-E
Performance figures Maximum speed 100 km/h (62 mph) Power output 6,000 hp (4,500 kW) Tractive effort: ​  • Starting 570 kN (130,000 lbf)  • Continuous 420 kN (94,000 lbf) Brakeforce 285 kN (64,000 lbf)
Career Operators Indian Railways Numbers 69001+ Nicknames ANGAD Locale Roza (Uttar Pradesh), Gandhidham (Gujarat) Disposition Active

Import and manufacture

Two units were produced by Wabtec's plant in Pennsylvania, United States, and delivered to India in 2019.[2] Initially, a few will be made in USA. Under the 'Make in India' initiative of Indian Government, GE will manufacture all remaining units at its factory in Marhowra, Bihar. GE has also built maintenance sheds at Roza in UP and Gandhidham in Gujarat.

Field trials

The first two locomotives in the series, 69001 and 69002, were recently sent to South Central Railways' Maula Ali (MLY) Diesel Locomotive Shed. The locos underwent Confirmatory Oscillograph Car Run (COCR) trials on the Vikarabad – Parli section of South Central Railway [3] and were approved by Research Design and Standards Organisation for further field trials on the Dedicated Freight Corridor by Roza Locomotive Shed.

Improvements

• Currently approved for test trials by RDSO at a maximum permissible speed of 65kmph. Trials are underway to increase the same.
• Current length of the loco is greater than any loco currently and hence facility of dual cab might be introduced[4]

Locomotive sheds

See also

• Indian locomotive class WDG-4G
• List of diesel locomotives of India
• Indian Railways
• Rail transport in India

References

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[de] IR-Klasse WDG-6G