Sirsonic wrote:If I had meant the ALP-45s used 75% of the fuel I would have said that. The 45s use significantly MORE fuel to go the same distance with the same number of cars as a GP40-2 or even a PL42 (the PL42s also use more fuel than the geeps).
The 45's have more horsepower total than the geeps, even with the HEP draw, so if they use more fuel, thats why. I have yet to see solid numbers anywhere except on a bombie spec sheet months ago that stated the fuel usage at idle is around 9 gallons per hour, not sure if thats per engine or total for both.
If that was the case, they would use the exact same amount of fuel as the PL42s then, because they have the same HP. But its not the case. Having one low speed engine (the EMD at around 900 RPM) compared to 2 medium speed engines, at 1800 RPM (or are they classified at medium speed and high speed? IM not sure) which do you think is going to use more fuel? Not to mention, the '45 has 24 cylinders, the '42 has 16. A Geep has 16 and 6 (for the HEP), but both are smaller displacement.
An engine working hard is going to use more fuel than an engine that isn't working that hard. The 2 CATs in the '45 work hard. The EMD doesn't work nearly as hard as often