Quote:
Originally Posted by bandit86
Holly crap it's close. What about diesel?
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Hi bandit86,
If you mean replacing a gasoline engine with a diesel, what should you expect fuel consumption wise? Diesel has about 10% more energy per gallon than gasoline. But the diesel cycle is way more efficient at cruise conditions. Maybe better than 30% efficiency at the 30 hp or so needed. So about 50 hp-hr per gallon at 30% efficiency is 15 hp-hr available. So to get 30 hp you need 2 gallons per hour, and at 60mph that's 30 mpg. Now this assumes that the diesel engine is plenty big enough to produce cruise power at high efficiency, and yet not so heavy that more force is needed to push the truck.
-mort