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Influence of nozzle geometry on ignition and combustion for high-speed direct injection diesel engines under cold start conditions

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Influence of nozzle geometry on ignition and combustion for high-speed direct injection diesel engines under cold start conditions

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dc.contributor.author Desantes Fernández, José Mª es_ES
dc.contributor.author García Oliver, José María es_ES
dc.contributor.author Pastor Enguídanos, José Manuel es_ES
dc.contributor.author Ramírez Hernández, José Gustavo es_ES
dc.date.accessioned 2016-12-14T14:06:54Z
dc.date.available 2016-12-14T14:06:54Z
dc.date.issued 2011-11
dc.identifier.issn 0016-2361
dc.identifier.uri http://hdl.handle.net/10251/75203
dc.description.abstract Starting at low temperatures (below 0 °C) is an important issue for current and near future diesel engine technology. Low ambient temperature causes long cranking periods or complete misfiring in small diesel engines and, as a consequence, an increased amount of pollutant emissions. This paper is devoted to study the influence of nozzle geometry on ignition and combustion progression under glow-plug aided cold start conditions. This study has been carried out in an optically accessible engine adapted to reproduce in-cylinder conditions corresponding to those of a real engine during start at low ambient temperature. The cold start problem can be divided in two parts in which nozzle geometry has influence: ignition and main combustion progress. Ignition probability decreases if fuel injection velocity is increased or if the amount of injected mass per orifice is reduced, which is induced by nozzles with smaller hole diameter or higher orifice number, respectively. Combustion rates increase when using nozzles which induce a higher momentum, improving mixture conditions. For these reasons, the solution under these conditions necessarily involves a trade-off between ignition and combustion progress. es_ES
dc.description.sponsorship Authors thank the Spanish Ministry of Innovation and Science for the financial support through the project OPTICOMB (reference code: TRA2007-67961-C03-C01). Authors also thank Daniel Lerida Sanchez de las Heras for his outstanding work in the facility set-up and adaptation and for his support during the tests. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Fuel es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Diesel combustion es_ES
dc.subject Cold start es_ES
dc.subject Injector nozzle es_ES
dc.subject Ignition es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.title Influence of nozzle geometry on ignition and combustion for high-speed direct injection diesel engines under cold start conditions es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.fuel.2011.06.006
dc.relation.projectID info:eu-repo/grantAgreement/MEC//TRA2007-67961-C03-01/ES/OPTIMIZACION DE NUEVOS CONCEPTOS DE COMBUSTION EN MOTORES DIESEL PARA REDUCIR LAS EMISIONES DE CO2 Y CONTAMINANTES: ESTUDIOS EN MOTOR MONOCIINDRICO EQUIPADO CON SISTEMAS FLEXIBLES/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario CMT-Motores Térmicos - Institut Universitari CMT-Motors Tèrmics es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny es_ES
dc.description.bibliographicCitation Desantes Fernández, JM.; García Oliver, JM.; Pastor Enguídanos, JM.; Ramírez Hernández, JG. (2011). Influence of nozzle geometry on ignition and combustion for high-speed direct injection diesel engines under cold start conditions. Fuel. 90(11):3359-3368. https://doi.org/10.1016/j.fuel.2011.06.006 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.fuel.2011.06.006 es_ES
dc.description.upvformatpinicio 3359 es_ES
dc.description.upvformatpfin 3368 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 90 es_ES
dc.description.issue 11 es_ES
dc.relation.senia 205995 es_ES
dc.contributor.funder Ministerio de Educación y Ciencia es_ES


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