Quote:
Originally Posted by diesaroo
Right, similar in that octane and cetane are both "good" for gasoline and diesel engines respectively, but for opposite reasons. High octane = large ignition delay to avoid pre-detonation. High cetane = short ignition delay to start the burn early for more complete combustion...longer burn duration...less bang.
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Agree on cetane definition
I consider octane rating to be a measure of resistance to detonation, not timing delay, since timing is set by ignition.
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