Farymann 43F Diesel governor questions??

[90cummins]

I have 2 Military surplus MEP-952b 28v DC APU's 1 of which is being used to support my battery backup system.
These units use a German made Farymann 43f diesel engine rated at 15hp to drive a 280A DC generator.
I'm looking for anyone with knowledge that can help me modify the governor for steady state operation at 2000 rpm from the original 3000 rpm.
Another option would be to information to build/install an electronic variable speed control system.
The reason is to reduce fuel consumption when being used for battery support at lower power levels.
At less than full throttle operation the governor allows excessive droop when a load is applied.

Any information would be greatly appreciated;

Thanks 90cummins

 

[90cummins]

Apparently Farymann diesels are not a common engine around here.
I have however modified the govenor so it will maintain any required speed.
I have it set at 2400 rpm which is at peak torque.
My recient fuel consumption testing was as follows.
I filled a 5 gallon container with 15kg of diesel, 30 plus pounds.
The fuel container was suspended and the fuel hose inserted thru the top taking care not to influence the scale reading.
Generator was connected to my 24 volt battery pack and started.
Main power was disconnected so the inverter would power the entire house.
I ran the test for 5.75 hours while carrying on normally in the house.
Load ranged from 2 to 4kw.
12.76 lbs of fuel were consumed which converts to 1.77 gallons which is 0.309 gallons per hour or 3.24 hours per gallon.
I'm quite happy with the results and will continue to find ways to reduce consumption further.
90cummins