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Effects of intake pressure on particle size and number emissions from premixed diesel low-temperature combustion

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Effects of intake pressure on particle size and number emissions from premixed diesel low-temperature combustion

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dc.contributor.author Desantes Fernández, José Mª es_ES
dc.contributor.author Benajes Calvo, Jesus Vicente es_ES
dc.contributor.author García Oliver, José María es_ES
dc.contributor.author KOLODZIEJ, CHRISTOPHER PAUL es_ES
dc.date.accessioned 2016-01-13T12:09:41Z
dc.date.available 2016-01-13T12:09:41Z
dc.date.issued 2014-02
dc.identifier.issn 1468-0874
dc.identifier.uri http://hdl.handle.net/10251/59812
dc.description.abstract In this study, 10 premixed diesel low-temperature combustion engine operating conditions were chosen based on engine intake pressure (1.2-1.6 bar), intake oxygen concentration (10%, 11%, and 12%), and injection timing (-24 degrees after top dead centre in all test conditions). At each intake oxygen concentration, the effects of intake pressure on combustion parameters and emission measurements (carbon monoxide, hydrocarbons, nitrogen oxides, particulate matter mass concentration, and particle size distributions) were analyzed. Although increased intake pressure resulted in higher in-cylinder charge air density that improved fuel/air premixing and late-cycle oxidation quality, higher intake pressure also advanced the start of combustion and thereby decreased the time available for fuel and air premixing. But even with the decrease in premixing time available before start of combustion, increased intake pressure caused significant decreases in carbon monoxide, hydrocarbon, particulate matter mass, and particle number emissions. Particle size distribution measurements allowed greater understanding of how higher intake pressure decreased the particulate matter mass concentrations with respect to particle size. To further investigate the experimental results, a zero-dimensional engine heat release code was used to analyze combustion temperatures, and a one-dimensional free spray model was used to estimate the relative levels of liquid fuel spray impingement on the piston surface and maximum local equivalence ratio at start of combustion for each test case. Therefore, though the premixing time was shortened by higher intake pressures, the decreased emissions were understood by combined effects of enhanced fuel and air premixing quality and improved late-cycle oxidation near the end of combustion. es_ES
dc.description.sponsorship This research has been carried out in the frame of the project PROMETEO/2010/032 supported by the Generalitat Valenciana. Financial support for Christopher P. Kolodziej was provided by the Spanish Ministry of Education (Formacion del Profesorado Universitario). en_EN
dc.language Inglés es_ES
dc.publisher SAGE Publications (UK and US) es_ES
dc.relation Generalitat Valenciana PROMETEO/2010/032 es_ES
dc.relation Spanish Ministry of Education (Formacion del Profesorado Universitario) es_ES
dc.relation.ispartof International Journal of Engine Research es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Diesel es_ES
dc.subject Premixed es_ES
dc.subject Low-temperature combustion es_ES
dc.subject Particle emissions es_ES
dc.subject Intake pressure es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.title Effects of intake pressure on particle size and number emissions from premixed diesel low-temperature combustion es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1177/1468087412469514
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 Fernández, JM.; Benajes Calvo, JV.; García Oliver, JM.; Kolodziej, CP. (2014). Effects of intake pressure on particle size and number emissions from premixed diesel low-temperature combustion. International Journal of Engine Research. 15(2):222-235. doi:10.1177/1468087412469514 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1177/1468087412469514 es_ES
dc.description.upvformatpinicio 222 es_ES
dc.description.upvformatpfin 235 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 15 es_ES
dc.description.issue 2 es_ES
dc.relation.senia 265493 es_ES


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