Darren & list,
If a Lister uses a US gallon of fuel in 3 hr 47 mins, and we know it is doing 650 rpm there will be
(227 x 325) injections = 73,775
If one gallon of fuel (diesel) is 18558 btu per lb, and there are 7.327 lbs of diesel in a gallon
A gallon is about 135988 btu, so a single shot of the pump is about 1.84 btu.
I have seen some diesel fuel figures at 138,000 btu/gal which would make one shot 1.87 btu.
Excuse the sightly cumbersome answer, but I tend to work in metric measurements.
My Lister 6/1 uses 1 litre of veg-oil per hour when running a 2kW load on the alternator.
The veg oil I use is 33.92MJ/litre or 9.4kWh/litre
So you put 9.4kW in and you get 2kW electricity out - so efficiency is 21.2%
When the Lister runs on no load, it will still use 0.2 litres of veg oil per hour overcoming the frictional losses and driving the cams and injector pump.
In metric measurements I estmated that a shot was about 1/20th of a cc, when driving a 2kW load.
Ken
