Quote:
Originally Posted by dcb
sorry dude, but bsfc is by weight (grams), not volume, and gas and diesel are about the same in the weight department (gas is actually a little higher)
http://upload.wikimedia.org/wikipedi...gy_density.svg
I think UFO explained the effects of increased compression ratio pretty well, higher expansion ratio=more energy extracted. |
I was using a chart that listed the BTU content per gallon dcb.
While bsfc is in grams, the energy content should be in the quantity you normally purchase, which in this case was gallons.
If bsfc was measured based on the available energy content per unit of measurement, then diesel would have more energy per unit of weight, but my percentages were not based on weight but volume, since you don't generally by fuel by weight.
With gas heavier than diesel (based on your statement) then the difference by weight would be greater than 12%.
dude, LOL
regards
Mech