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cetane number

a measure of the ignition quality of a diesel engine fuel by comparison with various mixtures in which the alpha form of methylnaphthalene is given a standard value of 0 and cetane is given a standard value of 100.
Also called cetane rating.
Origin of cetane number
1930-35 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for cetane number
  • The cetane index is derived from a formula for estimating the cetane number of diesel fuel.
  • Important characteristics of diesel fuels are its viscosity, pour point, and cetane number.
  • The cetane number of liquid products showed similar results.
  • SG is generally correlated against performance indicators such as cetane number and heating value.
  • The cetane number indicates the combustion quality of the diesel fuel during compression ignition.
  • In contrast, increasing unsaturation rapidly lowers the cetane number.
  • The cetane number is a dimensionless descriptor of the ignition quality of a diesel fuel.
  • cetane number is significantly higher than that of conventional diesel fuel.
  • These properties were sulfur, cetane number, and ash.
British Dictionary definitions for cetane number

cetane number

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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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