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dc.contributor.authorMello, Pedro Barbosapt_BR
dc.contributor.authorWildner, Fabiano Disconzipt_BR
dc.contributor.authorAndrade, Giovanni Souza dept_BR
dc.contributor.authorCataluña Veses, Renatopt_BR
dc.contributor.authorSilva, Rosângela dapt_BR
dc.date.accessioned2014-01-31T01:54:29Zpt_BR
dc.date.issued2014pt_BR
dc.identifier.issn1678-5878pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/87033pt_BR
dc.description.abstractSpeed flame propagation in Otto cycle engines is one of the principal characteristics of fuel and is fundamental in defining the ignition advance. The greater the propagation speed the less the negative work required to compress the mixture before the piston reaches the top dead center and the higher the cycle’s efficiency. This paper presents experimental results of time measurements of the fuel’s ignition and the maximum pressure rating in the combustion chamber of a Cooperative Fuel Research engine specially instrumented. The combustion duration measurements of oxygenated and non-oxygenated fuels were taken as a function of the compression ratio (8:1, 10:1 and 12:1) and lambda (k).The speed flame propagation in the combustion chamber is significantly changed with the change of the lambda different compression ratios. The VNG has a maximum in the speed flame propagation in the stoichiometric region (k = 1.0) in all compression rates in this study. Similar behavior occurs with ethanol and gasohol, but only in compression ratio 12:1. Ethanol and gasohol have the higher rate of flame propagation for all compression ratios measured as compared to the nonoxygenated (isooctane) and oxygenated fuels (MTBE and TAEE).en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofJournal of the Brazilian Society of Mechanical Sciences and Engineering. Rio de Janeiro. Vol. 36, no. 2 (Feb. 2014), p. 403-410pt_BR
dc.rightsOpen Accessen
dc.subjectFuelsen
dc.subjectCombustíveispt_BR
dc.subjectSpeed flame propagationen
dc.subjectOtto cycle engineen
dc.titleCombustion time of the oxygenated and non-oxygenated fuels in an Otto cycle enginept_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000910940pt_BR
dc.type.originNacionalpt_BR


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