darwins, on 09 August 2021 - 01:18 PM, said:
Exactly what I want. There are some British and European locomotives with EMD and Caterpillar engines. I have little idea how they perform in terms of rpm vs Power vs Fuel Consumption - this should help me a lot.
https://web.archive....cts/fueluse.htm
engmod, on 09 August 2021 - 02:22 PM, said:
RPM values:
http://www.rr-fallen...ual/manual.html
EMD 645E3 fuel consumption/power/RPM:
https://web.archive....ts/fuelSD40.htm
I use this curve as the basis for all turbocharged EMD engines (treat new engine rated power / 645E3 rated power as a coefficient).
EMD 567B power/RPM:
http://utahrails.net...opment_1951.pdf
I use this curve as the basis for all roots blown EMD engines (treat new engine rated power / 567B rated power as a coefficient). Caveat: remember that the curve up to 800 RPM is identical between a 567B and a 567C, the increase in governed RPM to 835 is the only source of the extra 250 HP. DO NOT USE THE DIFFERENCE IN HP BETWEEN A 567B AND 567C TO GENERATE A COEFFICIENT TO MULTIPLY YOUR POWER VALUES BY. You need to extrapolate the curve to fit the RPM range of the target engine and then do your calculations based on that. A 645E will require extrapolating this curve out to 904 RPM. Once you have calculated the power/RPM values for that curve, then, and only then, can you divide the new engine's rated power by the 567B's 1500 HP to create a coefficient to multiply the values by.