Ignition quality determination of diesel fuels from hydrogen type distribution of hydrocarbons
✍ Scribed by Ömer L. Gülder; Boris Glavincevski
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 471 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0010-2180
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✦ Synopsis
Hydrogen types of diesellike hydrocarbon fuels which have dominant effect on the ignition quality have been identified. A scheme of characterizing the chemistry of hydrocarbon fuels in terms of these hydrogen types using proton nuclear resonance spectrometry has been proposed. Using this analysis technique on 70 different diesel fuels, whose cetane numbers were determined on a number of standard cetane rating engines, an empirical expression which relates the ignition quality to the hydrogen type distribution of the fuels has been developed. The developed expression and the relationship between the ignition delay and cetane number imply that the effective activation energy term in the usual semiempirical ignition delay expression is not a constant for a given fuel but is a function of pressure and temperature as well as the fuel chemistry.