Reply to "Ethanol E85"

detom (Guest)

quote:
Natural gas and a LPG powered vehicle is equal in BTU's but missing the octane

Ron the BTU measure is for total energy and the octane has more to do with the temperature it takes to ignbite the fuel. Natural gas and butane have an ignition temp of around 800 degrees F. longer hydrocarbon chains take a higher heat energy to release their energy. Like take diesel fuel for instance. They typicaly run compresion ratios of 18 or up. Gasoline would ignite long before it saw that compresion. Compresion causes heat.

4/27/061:01 PM

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