
1) Petroleum production
Found on
https://www.crosswordclues.com/clue/cetane-number

Cetane number or CN is a measurement of the combustion quality of diesel fuel during compression ignition. Thus, it is the approximate equivalent of octane rating for gasoline (petrol). The CN is an important factor in determining the quality of diesel fuel, but not the only one; other measurements of diesel`s quality include (but are not limited....
Found on
http://en.wikipedia.org/wiki/Cetane_number

(from the article `diesel engine`) ...is essential to efficient injection systems. Fuels with a high carbon residue can be handled best by engines of low-speed rotation. The same ...
Found on
http://www.britannica.com/eb/a-z/c/48

A measure of the ease with which a liquid fuel self-ignites. Cetane number is the diesel fuel equivalent to a gasoline octane rating, and expresses the fuel's ignition quality and its suitability for spontaneous self-ignition in an engine. The fuel must ignite spontaneously and quickly after being i...
Found on
http://www.daviddarling.info/encyclopedia/C/AE_cetane_number.html

Number equal to the percentage by volume of cetane added to basic diesel fuel to achieve specific ignition performance characteristics.
Found on
http://www.encyclo.co.uk/local/21049

Number equal to the percent by volume of the hydrocarbon added to basic diesel fuel to achieve a certain ignition performance characteristics.
Found on
http://www.encyclo.co.uk/visitor-contributions.php

A percentage indicating the ignition quality of diesel fuels. It is actually a measure of a fuel's ignition delay. This is the time period between the start of injection and start of combustion (ignition) of the fuel. In a particular diesel engine, higher cetane fuels will have shorter ignition delay periods than lower cetane fuels. Cetane number i...
Found on
https://www.encyclo.co.uk/local/20687

A measure of a fuel's (liquid) ease of self-ignition.
Found on
https://www.encyclo.co.uk/local/22819

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
Found on
https://www.infoplease.com/dictionary/cetane-number
No exact match found.