Full Form of GTL

What is GTL?

A Gas Turbine Locomotive (GTL) is a type of railway locomotive that uses a gas turbine engine to generate mechanical power for traction. Unlike conventional diesel or electric locomotives, GTLs burn fuel—typically kerosene or diesel—in a continuous combustion process to spin a turbine, which then drives the wheels through a gearbox or electric generator. In India, Indian Railways introduced GTLs in the 1960s for high-speed passenger and freight services, notably on broad-gauge routes where rapid acceleration and sustained high speeds were required. The most famous Indian GTL class was the WDM-2M (later reclassified), derived from the Swiss-built GT-series. These locomotives were primarily deployed on the Delhi–Howrah and Delhi–Mumbai corridors, but their high fuel consumption and maintenance complexity led to phased retirement by the early 2000s. Today, GTLs are largely museum pieces, though their legacy endures in technical textbooks and railway exam syllabi. For candidates preparing for RRB or SSC JE exams, understanding the GTL’s working principle, advantages (high power-to-weight ratio) and disadvantages (poor fuel efficiency) is important for objective-type questions. The concept also appears in mechanical engineering curricula when discussing prime movers.

GTL का फुल फॉर्म

Example

The Indian Railways once operated several GTL locomotives on the Howrah-Delvia route, but they were eventually replaced by more efficient electric and diesel units.

GTL — frequently asked questions

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