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Investigation of the combustion of neat cottonseed oil or its neat bio-diesel in a HSDI diesel engine by experimental heat release and statistical analyses

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dc.contributor.author Rakopoulos, CD en
dc.contributor.author Rakopoulos, DC en
dc.contributor.author Giakoumis, EG en
dc.contributor.author Dimaratos, AM en
dc.date.accessioned 2014-03-01T01:33:40Z
dc.date.available 2014-03-01T01:33:40Z
dc.date.issued 2010 en
dc.identifier.issn 0016-2361 en
dc.identifier.uri http://hdl.handle.net/123456789/20523
dc.subject High speed DI diesel en
dc.subject Combustion Neat cottonseed oil en
dc.subject Neat bio-diesel en
dc.subject Heat release and statistical analyses en
dc.subject.classification Energy & Fuels en
dc.subject.classification Engineering, Chemical en
dc.subject.other FUEL BLENDS en
dc.subject.other VEGETABLE-OILS en
dc.subject.other EXHAUST EMISSIONS en
dc.subject.other METHYL-ESTER en
dc.subject.other PERFORMANCE en
dc.subject.other SUNFLOWER en
dc.subject.other MIXTURES en
dc.title Investigation of the combustion of neat cottonseed oil or its neat bio-diesel in a HSDI diesel engine by experimental heat release and statistical analyses en
heal.type journalArticle en
heal.identifier.primary 10.1016/j.fuel.2010.07.012 en
heal.identifier.secondary http://dx.doi.org/10.1016/j.fuel.2010.07.012 en
heal.language English en
heal.publicationDate 2010 en
heal.abstract An experimental study is conducted to evaluate the effects of using neat cottonseed oil or its neat ME (methyl ester) bio-diesel, on the combustion behavior of a standard, high speed, direct injection (HSDI), 'Hydra' diesel engine located at the authors' laboratory. Combustion chamber and fuel injection pressure diagrams are obtained at medium and high load using a developed, high-speed, data acquisition and processing system. A heat release analysis of the experimentally obtained cylinder pressure diagrams is developed and used. Plots of histories in the combustion chamber of the heat release rate and other related parameters reveal some interesting features, which shed light into the combustion mechanism when using these bio-fuels. These results, combined with the differing physical and chemical properties of the bio-fuels between themselves and against those for the diesel fuel, which constitutes the baseline fuel, aid the correct interpretation of the observed engine behavior performance-and emissions-wise. Moreover, the possible existence of cyclic (combustion) variability is examined as reflected in the pressure indicator diagrams, by analyzing for the maximum pressure and its rate, and the dynamic injection timing and ignition delay, by using statistical analysis for averages, standard deviations and probability density functions. The key results are that with the use of these bio-fuels against the neat diesel fuel case, the ignition delay is hardly affected, the fuel injection pressure diagrams are very slightly advanced accompanied with higher injection pressures, maximum cylinder pressures remain the same with the vegetable oil and slightly increased with the bio-diesel, maximum cylinder pressure rates are increased with the bio-diesel and decreased with the vegetable oil, while the cyclic irregularity is not affected with these bio-fuels remaining at the acceptable neat diesel fuel case levels. (C) 2010 Elsevier Ltd. All rights reserved. en
heal.publisher ELSEVIER SCI LTD en
heal.journalName FUEL en
dc.identifier.doi 10.1016/j.fuel.2010.07.012 en
dc.identifier.isi ISI:000282086200026 en
dc.identifier.volume 89 en
dc.identifier.issue 12 en
dc.identifier.spage 3814 en
dc.identifier.epage 3826 en


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