To complete Tore's detailed explanations - the German war-time description of G.W. Diesel engines gives following data:
fuel consumption during stationary trials:
overload (1/2 hour), 1612 HP, 494 RPM, 195,5 g/bhp
overload (2 hour), 1515 HP, 486 RPM, 190,2 g/bhp
full load, 1400 HP, 470 RPM, 190 g/bhp
3/4 load 1056 HP, 429 RPM, 187,4 g/bhp
1/2 load without blower, 702 HP, 375 RPM, 182,3 g/bhp
1/4 load without blower, 350 HP, 298 RPM, 197,5 g/bhp
standard revolutions: 470 RPM
highest revolutions: 515 RPM
lowest revolutions (with blower): 130 RPM
lowest revolutions (without blower): 100 RPM
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Regards
Maciek