Cetane Number 2
Cetane Number 2 :
A measure of the ability of diesel fuel to reduce engine knocking. The cetane number plays the same role in diesel engine technology that the octane number plays in conventional automobile engine technology. It is the percentage by volume of cetane which must be added to methylnaphthalene to give the mixture the same resistance to knocking as the diesel fuel sample being tested. Cetane is the name of a hydrocarbon compound whose molecules contain 16 carbon atoms and 34 hydrogen atoms, the 16 carbons being arranged in a long chain. Adding one oxygen atom to cetane produces cetyl alcohol, a waxy compound found in whale oil. The words "cetyl" and "cetane" are both derived from the Latin word cetus for a whale
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