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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Independent lab certified to reduce Diesel Particulate Matter (DPM) by 20% and overall emissions by 21% and has been shown to deliver an average Cetane rating over 52 when added to regular diesel fuel at fill up, Dynamo[TM] Diesel Cetane Booster also improves engine performance, power, and increases miles per gallon along with improving cold flow, increasing lubricity and cleaning fuel injectors.
2 Ultra Low Sulfur Diesel Fuel Oil on highway use only; Cetane rating of 40 minimum; Water and sediment percent by volume, 0.
8% pure distilled biodiesel has superior performance over the regular biodiesel, including a high cetane rating of 66-68 compared to the regular biodiesel cetane rating of about 51.
As a diesel additive, butanol has a comparatively high cetane rating and improves flow in cold weather.
low-sulfur diesel has a cetane rating of between 38 and 45, while Europe runs up to 58--the higher level of cetane the better the fuel burn and lubricity.
Monster Diesel effectively boosts the cetane rating of diesel fuel to give operators a premium grade diesel fuel which is more cost effective and better for their engine.
Ultimate diesel has a guaranteed cetane rating of 55, compared with regular diesel at 51, and BP claims that it can reduce the noise and smoke in a diesel vehicle by up to 30 percent.
A low cetane fuel (below 40) will cause visible white smoke, poor fuel economy, and lack of power in cold ambients--whereas a higher cetane rating will result in better engine performance, better fuel economy and better exhaust emissions.
Isocetane (2,2,4,4,6,8,8-heptamethylnonane) with a cetane rating of 15 because it ignites poorly in a diesel engine and cetane (n-hexadecane), with a cetane rating of 100 because it ignites easily, have been used as the reference fuels since 1962.
EC Diesel will have a higher cetane rating, which is similar to the octane rating of gasoline, and contain less sulfur and aromatics than the diesel used today.