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Cetane number (Bruce Hamilton) (0 words) |
 | It is the % volume of cetane (n-hexadecane, Cetane Number = 100) in alpha methyl naphthalene (Cetane Number = 0), that provides the specified standard of 13 degrees (crankshaft angle) ignition delay at the identical compression ratio to that of the fuel sample. |
| The cetane number is then determined by interpolation, and the higher the Cetane Number, the shorter the delay between injection and ignition. |
| The significance of the cetane number increases with the speed of the engine, and large, low speed diesel engines often only specify viscosity, combustion and contaminant levels, as Cetane Number requirement of the engine is met by most distillate and residual fuels that have the appropriate propeties. |
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Prepared to Respond (P2R) Services - Additives Brocure Insert - Cetane Improver for Diesels (444 words) |
| Cetane number is a measure of the ignition and combustion quality of diesel fuel; the higher the cetane number, the more efficiently the engine operates. |
| A cetane number of 40 is a common specification in contracts and for pipelines, while a higher cetane number is often required by fleet operators for over-the-road operations. |
| While the effective treating rate depends on the base cetane number of the fuel and the amount of cetane increase desired, a rule of thumb is that a treat rate of 600 ppm will improve the cetane number of a diesel fuel by three numbers. |
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