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Posted by Chriscase on Sunday, April 09, 2006 at 10:51PM :

In Reply to: do you have a reference for that? posted by George in MI on Sunday, April 09, 2006 at 10:00PM :

"Diesel fuel has a higher energy density than gasoline. On average, 1 gallon of diesel fuel contains approximately 147,000 BTU of potential, while 1 gallon of gasoline contains 125,000 BTU. This, combined with lower operating RPM's and overall efficiency explains why diesel get better fuel economy than equivalent gasoline engine."

Or try Googling <diesel gasoline btu> and pick your own cite.

Yes, max efficiency with a gas motor would be in using the smallest possible cid running WOT, but diesel still has more energy. I expect diesel/electric/regenerative/battery hybrid cars anyday now.


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