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Explain U.P.'s Gas Turbine locomotive's operation?
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[quote]QUOTE: <i>Originally posted by jschuknecht</i> <br /><br />[quote]QUOTE: <i>Originally posted by bigboy4015</i> <br /><br />...In idlemode a turbine "drink" near 1.000 gallons Bunker C in one hour...[/quote] I had read about that and the fact that they used a small internal diesel engine for jostling and the like, and I wondered, what did they do when the turbines had to wait to meet another train? Did they shut them down, or were they so difficult to start back up and get up to operating status before moving on that they just left them running? Or did they always have these engines running on double-track or scheduled so that they rarely had to stop and wait for another train (or didn't have them waiting too long)? <br /> <br />---jps <br />[/quote] <br /> <br />Good question. Okay, the main workingfield was UP´s mainline between Council Bluffs, Iowa, and Ogden, Utah. This line is real doubletrack. And also fast passenger and mail trains use the line. <br /> <br />When it happens that a GTEL powered train must wait in a siding for a longer time - more than 10 minutes will be a good time - because the passing of a faster passenger train or so, I think its possible that the turbine was shut down and the 270 hp (4500) or 800 hp (8500) ponydiesel was started. <br />Restart a warm turbine was a deal that needs two or three minutes when the rest of the locomotive is ready for use. But a restart needs also some more fuel and brings more maintenance! A turbine isn´t designed for start-stop use! <br /> <br />Possible it is cheaper - special then when the fuelconsumption was not longer a real problem because of the tenders - to run the turbines also in sidings.
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