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Diagram of a free-piston engine as a gas generator for a gas turbine. The first gas turbine–mechanical locomotive in the world, Class 040-GA-1 of 1,000 hp (0.75 MW) was built by Renault in 1952 and had a Pescara free-piston engine as a gas generator. It was followed by two further locomotives, Class 060-GA-1 of 2,400 hp (1.8 MW) in 1959–61.
GE diagram of a turbine locomotive. Union Pacific operated the largest fleet of gas turbine–electric locomotives (GTELs) of any railroad in the world. The prototype, UP 50, was the first in a series built by General Electric for Union Pacific's long-haul cargo services and marketed by the Alco-GE partnership until 1953.
An internal combustion locomotive is a type of railway locomotive that produces its pulling power using an internal combustion engine.These locomotives are fuelled by burning fossil fuels, most commonly oil or gasoline (UK: petrol), to produce rotational power which is transmitted to the locomotive's driving wheels by various direct or indirect transmission mechanisms.
The RTG (abbreviated from the French Rame à Turbine à Gaz, or gas turbine train) [8] model was an Americanized version of the French ANF T 2000 RTG Turbotrain (related to the prototype precursor to the very first TGV trainset, the TGV 001).
The UAC TurboTrain was an early high-speed, gas turbine train manufactured by United Aircraft that operated in Canada between 1968 and 1982 and in the United States between 1968 and 1976. It was one of the first gas turbine -powered trains to enter service for passenger traffic, and was also one of the first tilting trains to enter service in ...
Gas turbine cycle engines employ a continuous combustion system where compression, combustion, and expansion occur simultaneously at different places in the engine—giving continuous power. Notably, the combustion takes place at constant pressure, rather than with the Otto cycle, constant volume.
An extension of the standard turboelectric propulsion scheme is COGES, or combined gas–electric and steam. In COGES a gas-turbine–electric primary transmission is used with a heat-recovery boiler in the exhaust flow to generate steam that drives a steam turbine that also generates electricity. Thus the system is thus even more efficient, as ...
The colours dark and light green represent wet and dry steam respectively. The colours orange and yellow represent hot and cooler exhaust gas respectively. In the diagram, three small-diameter orange/yellow empty firetubes are indicated to the bottom, with two larger diameter orange/yellow firetubes to the top that contain the superheater elements.