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Assessing the optimum combustion under constrained conditions

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Assessing the optimum combustion under constrained conditions

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dc.contributor.author Olmeda, P. es_ES
dc.contributor.author Martín, Jaime es_ES
dc.contributor.author Novella Rosa, Ricardo es_ES
dc.contributor.author Blanco-Cavero, Diego es_ES
dc.date.accessioned 2020-06-05T03:32:15Z
dc.date.available 2020-06-05T03:32:15Z
dc.date.issued 2020-06-01 es_ES
dc.identifier.issn 1468-0874 es_ES
dc.identifier.uri http://hdl.handle.net/10251/145397
dc.description.abstract [EN] This work studies the optimum heat release law of a direct injection diesel engine under constrained conditions. For this purpose, a zero-dimensional predictive model of a diesel engine is coupled to an optimization tool used to shape the heat release law in order to optimize some outputs (maximize gross indicated efficiency and minimize NOx emissions) while keeping several restrictions (mechanical limits such as maximum peak pressure and maximum pressure rise rate). In a first step, this methodology is applied under different heat transfer scenarios without restrictions to evaluate the possible gain obtained through the thermal isolation of the combustion chamber. Results derived from this study show that heat transfer has a negative effect on gross indicated efficiency ranging from -4% of the fuel energy (m(f)H(v)), at high engine speed and load, up to -8% m(f)H(v), at low engine speed and load. In a second step, different mechanical limits are applied resulting in a gross indicated efficiency worsening from -1.4% m(f)H(v) up to -2.8% m(f)H(v) compared to the previous step when nominal constraints are applied. In these conditions, a temperature swing coating that covers the piston top and cylinder head is considered obtaining a maximum gross indicated efficiency improvement of +0.5% m(f)H(v) at low load and engine speed. Finally, NOx emissions are also included in the optimization obtaining the expected tradeoff between gross indicated efficiency and NOx. Under this optimization, cutting down the experimental emissions by 50% supposes a gross indicated efficiency penalty up to -8% m(f)H(v) when compared to the optimum combustion under nominal limits, while maintaining the experimental gross indicated efficiency allows to reduce the experimental emissions 30% at high load and 65% at low load and engine speed. es_ES
dc.description.sponsorship This work was partially funded by GM Global R&D and the Government of Spain through Project TRA2017-89894-R. In addition, the authors acknowledge that some equipment used in this work has been partially supported by FEDER project funds (FEDER-ICTS-2012-06), framed in the operational programme of unique scientific and technical infrastructure of the Ministry of Science and Innovation of Spain. Diego Blanco-Cavero is partially supported through contract FPI-S2-2016-1356 of the Programa de Apoyo para la Investigacion y Desarrollo (PAID) of Universitat Politcenica de Valencia. 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 engine es_ES
dc.subject Combustion optimization es_ES
dc.subject NOx emissions es_ES
dc.subject Temperature swing coating es_ES
dc.subject Efficiency es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.title Assessing the optimum combustion under constrained conditions es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1177/1468087418814086 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/UPV//FPI-S2-2016-1356/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//ICTS-2012-06/ES/Dotación de infraestructuras científico técnicas para el Centro Integral de Mejora Energética y Medioambiental de Sistemas de Transporte (CiMeT)/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/TRA2017-89894-R/ES/METODOLOGIA PARA LA PREDICCION DE EMISIONES DE CO2 Y CONTAMINANTES DE UN MOTOR ALTERNATIVO/ 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 Olmeda, P.; Martín, J.; Novella Rosa, R.; Blanco-Cavero, D. (2020). Assessing the optimum combustion under constrained conditions. International Journal of Engine Research. 21(5):811-823. https://doi.org/10.1177/1468087418814086 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1177/1468087418814086 es_ES
dc.description.upvformatpinicio 811 es_ES
dc.description.upvformatpfin 823 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 21 es_ES
dc.description.issue 5 es_ES
dc.relation.pasarela S\383288 es_ES
dc.contributor.funder Agencia Estatal de Investigación es_ES
dc.contributor.funder Universitat Politècnica de València es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
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