[Lindsayts]

In the older Diesel Electrics that use the Woodward governor. For each notch position the governor try's top hold the engine at a particular rpm and particular fuel rack position. Holding the fuel rack so means the engine injects the same quantity of fuel and therefore the engine torque is constant.

To enable this to occur the Governor controls the amount of power the altenator generates. The effect of all this is that for these locos (The F40 is an example) the total power the engine generates is always the same, when any thing such as cooling fans, air compressor, auxilary altenator cut vary in load, the governor reduces the main altenator load to keep the engine power constant.

Therefore for these locos the fuel consumption WILL be constant at each notch position from 1 to 8, the governor treats Notch 0 differently, the governor at this notch appear just to keep the engine revs constant.

The above info comes from a long study of the F40 mainentence manual and also the Woodward Governor companys operational description docs in order to try an get an acurate picture of how the control system works.

Lindsay

[Lindsayts]

There are at least two webs sites around the net that have published DE loco fuel consumption for number of US loco's, figure's being given in US gallons/ hour for each notch position.

[copperpen]

Matej

Thanks for fixing the consumption problem. Now, with gallons (900) converted to US gallons (992) I can get just over 5 hours running with the Deltic which is plenty for activities on the Mid East route. I have a feeling that Kuju used UK gallons for fuel level which ORTS is not using.