Micro CoGen.

Posted in General for better exposure

I'm trying to figure out if they are Diesels or converted to Gasoline.......Alcohol.....Nitro??
https://youtu.be/N4p-mOf3PFU

Wild stuff

Does fuel consumption between engines "scale"?
IOW, does a 6/1 (or a 6/10) running at say.....2000 Watts use about the same ammount of fuel per hour
as a 20/2 running at 2000 watts?
I understand a 2 cyl might use a bit more fuel, and that there are additional frictional losses,
but curious if part loading of a larger engine can be economical.
I want to run economically at light loads, but still have plenty of reserve power available.

I guess another possible solution would be 2 single cylinder engines coupled with a clutch that
could be engaged to 'bring in' the second engine?