Quote:
Originally Posted by Frank Lee
Speaking of engine efficiency, I still don't get why the efficiency of the world's most efficient ICE, a huge MAN two-stroke diesel, is not scale-down-able.  |
you can scale it down, the problem is making useable power in a vehicle size package.
remember that thing only spins about one hundred rpm. if you scale it down to 18wheeler engine size you'll only be making 20 or so horsepower
figure your average detroit makes around 1100 pounds of torque at 1200rpm
if you take that same 1100 ft/lbs and drop it back to 100rpm
you have 1100ft/lbs * 100rpm = 110,000/ 5250 = 20.95hp
so you have a road tractor engine that puts out 21 hp.
it would make an awesome stationary engine for a small generator.