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Optical study on characteristics of non-reacting and reacting diesel spray with different strategies of split injection

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Optical study on characteristics of non-reacting and reacting diesel spray with different strategies of split injection

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dc.contributor.author Desantes, J.M. es_ES
dc.contributor.author García-Oliver, José M es_ES
dc.contributor.author García Martínez, Antonio es_ES
dc.contributor.author Xuan, Tiemin es_ES
dc.date.accessioned 2020-07-16T03:31:45Z
dc.date.available 2020-07-16T03:31:45Z
dc.date.issued 2019-08 es_ES
dc.identifier.issn 1468-0874 es_ES
dc.identifier.uri http://hdl.handle.net/10251/148097
dc.description.abstract [EN] Even though studies on split-injection strategies have been published in recent years, there are still many remaining questions about how the first injection affects the mixing and combustion processes of the second one by changing the dwell time between both injection events or by the first injection quantity. In this article, split-injection diesel sprays with different injection strategies are investigated. Visualization of n-dodecane sprays was carried out under both non-reacting and reacting operating conditions in an optically accessible two-stroke engine equipped with a single-hole diesel injector. High-speed Schlieren imaging was applied to visualize the spray geometry development, while diffused backgroundillumination extinction imaging was applied to quantify the instantaneous soot production (net result of soot formation and oxidation). For non-reacting conditions, it was found that the vapor phase of second injection penetrates faster with a shorter dwell time and independently of the duration of the first injection. This could be explained in terms of onedimensional spray model results, which provided information on the local mixing and momentum state within the flow. Under reacting conditions, interaction between the second injection and combustion recession of the first injection is observed, resulting in shorter ignition delay and lift-off compared to the first injection. However, soot production behaves differently with different injection strategies. The maximum instantaneous soot mass produced by the second injection increases with a shorter dwell time and with longer first injection duration. es_ES
dc.description.sponsorship The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This study was partially funded by the Spanish Ministry of Economy and Competitiveness in the frame of the advanced spray combustion models for efficient powertrains (COMEFF) (TRA2014-59483-R) project. Funding for Tiemin Xuan's PhD studies was granted by Universitat Politecnica de Valencia through the Programa de Apoyo para la Investigacion y Desarrollo (PAID) (grant reference FPI-2015-S2-1068) es_ES
dc.language Inglés es_ES
dc.publisher SAGE Publications es_ES
dc.relation.ispartof International Journal of Engine Research es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Diesel spray es_ES
dc.subject Split injection es_ES
dc.subject Vapor penetration es_ES
dc.subject Ignition delay es_ES
dc.subject Soot es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.title Optical study on characteristics of non-reacting and reacting diesel spray with different strategies of split injection es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1177/1468087418773012 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/UPV//FPI-2015-S2-1068/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//TRA2014-59483-R/ES/MODELOS AVANZADOS DE COMBUSTION EN SPRAYS PARA PLANTAS PROPULSIVAS EFICIENTES/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Máquinas y Motores Térmicos - Departament de Màquines i Motors Tèrmics es_ES
dc.description.bibliographicCitation Desantes, J.; García-Oliver, JM.; García Martínez, A.; Xuan, T. (2019). Optical study on characteristics of non-reacting and reacting diesel spray with different strategies of split injection. International Journal of Engine Research. 20(6):606-623. https://doi.org/10.1177/1468087418773012 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1177/1468087418773012 es_ES
dc.description.upvformatpinicio 606 es_ES
dc.description.upvformatpfin 623 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 20 es_ES
dc.description.issue 6 es_ES
dc.relation.pasarela S\373242 es_ES
dc.contributor.funder Ministerio de Economía y Empresa es_ES
dc.contributor.funder Universitat Politècnica de València es_ES
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