Cal 9.2 SilverSwan
Join Date: Jul 2000
Location: East Tennessee
Thanked 2 Times in 1 Post
Rep Power: 17
I've always used 18 HP per hr per gallon for diesel and 14.5 for unleaded gas. This assumes internal combustion engines, 4 stroke, normally aspirated. I did some research on small engine fuel consumption and it goes like this:
|Natural gas||9-11 hp-hr/ccf|
|LP (propane)||9-11 hp-hr/gal|
The size of the engine, operating temperature, RPM, and Load all have an effect on the efficiency of energy conversion.
Cal 9.2 #19 SilverSwan
Last edited by roline; 09-09-2009 at 08:11 PM.
Reason: add graph and more info