The Loco Story :

Built by Diesel Locomotive Works, Varanasi first in 1995.

Maximum speed limit - 100 kmph. Power output of 2300 hp.

A poor adaptation of the WDM2 intended for hauling small passenger trains with limited coaches, this model never performed well and has always had poor ride quality and maintenance problems.

With a 12-cylinder engine and low overall weight, used to have a Bo-Bo wheelset, rather unsual for mainline IR diesels.

With left-hand driving position in the cab these are often manned by single loco pilot.

Homed at Tughlakabad and Vijaywada. Used mostly for ordinary passenger trains.

Technicalities :

Engines --- Alco 251C-12 variant, 2300hp, with Napier NA 295 or ABB VTC304 turbocharger. 1000rpm max / 400rpm idle.

Fuel injection, cooling, fans, governor as with WDM-2. 228mmx266mm bore/stroke. 12.5:1 compression ratio.

Gear Ratio --- 74:18

Transmission --- Electric, with BHEL TA 10106 AZ alternator (1000rpm, 750V, 4200A).

Axle Load --- 20 tonnes

Tractive effort --- 20t at 25% adhesion.

Bogie type --- Bo-Bo fabricated bogies

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