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.

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

ce′tane num`ber


n.
a measure of the ignition quality of diesel fuel.
[1930–35]
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References in periodicals archive ?
While such engines can run on conventional diesel fuels, there are advantages in using a fuel of lower cetane number where the longer ignition delay allows more time for mixing.
5]OH Boiling point 188-344 78 ([degrees]C) Cetane number 40-48 8 Auto-ignition temp.
Additional improvements in other qualities such as distillation boiling range, flow properties, cetane number and aromatics content were brought about through installation of new facilities.
The Herzog Cetane ID 510 by PAC, a compact, automated instrument for quality Derived Cetane Number (DCN) analysis of diesel and biodiesel fuels, is now a standard.
On the other hand, six-fold lower cetane number (8) of ethanol rather than that of RO (4448) and its high auto-ignition temperature reaching up to 420[degrees]C together with high volatility and tendency to absorb water may aggravate auto-ignition and stimulate misfiring cycles.
Vegetable oils have comparable energy density, cetane number, heat of vaporization and stoichiometric air fuel ratio with that of diesel.
The most important quality characteristics of fuels are tested in the laboratories; for example, the gasoline octane number and the diesel cetane number These characteristics are relevant for the power that fuels transmit to the engine.
The IQT is a standard test device to measure derived cetane number (DCN) according to ASTM D6890 [39].
Nano sized zinc oxide particles in the diesel fuel improves cetane number of the fuel and improves the low temperature combustion [12, 14].
Utilizing this proven system, the diesel analyzer is suited to determine the composition and predict properties such as cetane number and cetane index.
It is shown that for higher cetane number engine performance and NOx emission together other emissions are increased [2].