cetane number

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cetane number

n.
A performance rating for diesel fuels, with a higher number indicating greater fuel efficiency. The number corresponds to the percentage of cetane in a cetane-heptamethylnonane mixture, or (and originally) in a cetane-methylnaphthalene mixture, with the same ignition performance as the fuel being rated. Also called cetane rating.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ce′tane num`ber


n.
a measure of the ignition quality of diesel fuel.
[1930–35]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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References in periodicals archive ?
Ryan (III), Cetane Numbers of Branched and Straight-chain Fatty Esters Determined in an Ignition Quality Tester, Fuel, 82, 971 (2003).
The difference in bottom thermal behaviour and thus fuel consumption for RME-diesel mixture, RBE-diesel mixtures and pure diesel is determined by their production technology: the use of alcohols with different cetane numbers for transesterification (Matijosius, Sokolovskij 2009).
Designed as an economical way to provide year-round protection, this product offering includes Diesel Conditioner & Lubricant, a multi-functional fuel additive formulated to clean fuel injectors and provide cold weather and lubricity protection; Diesel Moisture Remover & Emergency Degeller for preventative maintenance against tank moisture buildup or as an emergency additive to dissolve gelled fuel; Diesel Injector Cleaner & Cetane Boost to improve fuel economy and increase cetane numbers while keeping fuel injectors clean; Diesel Conditioner and Anti Gel, to protect against filter plugging/icing and provide lubricity protection and fuel stability; and Diesel Anti Gel for providing maximum protection from cold filter plugging and fuel line freezing.
As it features low cetane numbers, biogas is generally used in spark ignition (SI) engines (Hunt, 2007).
Effect of different cetane numbers on the engine performance and emissions has been investigated for different injection pressure and throttle position.
on-board diagnostic requirements and handling fuels with varying cetane numbers, but Honda plans to have the engine available in the U.S.
Additives must be added to E diesel to overcome inherent problems such as separation of the ethanol and diesel fuel, reduced lubricity and increased fuel pump wear, loss of cetane numbers and increased corrosion of fuel system components.
Klopfenstein [98] found that for the methyl esters the cetane numbers increased in a nonlinear relation with the chain length of the acid.