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cetane number

   Also found in: Encyclopedia, Wikipedia 0.03 sec.
cetane number
n.
The performance rating of a diesel fuel, corresponding to the percentage of cetane in a cetane-methylnaphthalene mixture with the same ignition performance. A higher cetane number indicates greater fuel efficiency. Also called cetane rating.

cetane number
n
(Chemistry) a measure of the quality of a diesel fuel expressed as the percentage of cetane in a mixture of cetane and 1-methylnapthalene of the same quality as the given fuel Also called cetane rating Compare octane number


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We fully expect the diesel being used to operate the governor's vehicle will validate the ultra-clean characteristics of Fischer-Tropsch fuels, which have no detectable sulfur or aromatics, are biodegradable and have a high cetane number.
The California reference fuel specification includes requirements such as 10% maximum aromatics content, a minimum cetane number of 48, and 15 parts-per-million (ppm) sulfur content.
The high cetane number of the diesel fuel will help meeting future more stringent specifications.
 
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