Quote:
Originally Posted by Old Tele man
...octane is a figure of merit of the gasolines' resistance to detonation during compression buildup...diesel doesn't have this problem.
...cetane is a figure of merit of diesels' ignition delay, ie: burning-rate under compression.
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When you state "diesel" it helps to know if you are referring to diesel fuel or the Diesel engine cycle. Diesel fuel used in an Otto cycle engine certainly does have the problem of detonation and the octane rating is entirely relevant.
Octane is the rating of a
fuel's resistance to detonation during compression. It is NOT strictly measuring gasoline.
Same with cetane. It isn't just for diesel fuel, it is for any fuel. And you should know the cetane rating of any fuel you put in a Diesel cycle engine.
Mike