- -

Effect of in-cylinder swirl on engine efficiency and heat rejection in a light-duty diesel engine

RiuNet: Institutional repository of the Polithecnic University of Valencia

Share/Send to

Cited by

Statistics

Effect of in-cylinder swirl on engine efficiency and heat rejection in a light-duty diesel engine

Show simple item record

Files in this item

dc.contributor.author Olmeda, P. es_ES
dc.contributor.author Martín, J. es_ES
dc.contributor.author Blanco-Cavero, Diego es_ES
dc.contributor.author Warey, A. es_ES
dc.contributor.author Domenech, V. es_ES
dc.date.accessioned 2018-05-18T04:23:08Z
dc.date.available 2018-05-18T04:23:08Z
dc.date.issued 2017 es_ES
dc.identifier.issn 1468-0874 es_ES
dc.identifier.uri http://hdl.handle.net/10251/102175
dc.description.abstract [EN] During the last years, the growing awareness about the impacts of climate change lead to an increase in the importance of the efficiency over other criteria in the design of internal combustion engines. In this framework, the heat transfer to the combustion chamber walls can be considered as one of the main sources of indicated efficiency diminution. Hence, the main objective of this research is to thoroughly assess the effect of the swirl ratio on the heat rejection to the chamber walls, and thus on the efficiency, of a fully instrumented four-cylinder direct-injection diesel engine with variable swirl ratio (covering the range from 1.4 to 3). The analysis, based on the engine global energy balance, includes a combination of theoretical and experimental tools such as thermal flow measurement and dedicated thermocouples in the cylinder head and liner. Considering the results, it is shown that an increase in swirl ratio leads to a heat transfer enhancement, along with important changes on the combustion development. As a result of the combination of these two effects, it is shown that intermediate swirl ratios can slightly improve engine efficiency at low load, while increasing swirl worsens the combustion process and efficiency at high load. However, convective heat transfer increases about 3% of the fuel energy in the chamber when swirl ratio increases from 1.4 to 3. The heat rejection characterization is completed with the analysis of the wall temperatures. Despite the observed trends, heat transfer does not seem to be the only key issue for explaining the indicated and brake efficiencies, thus the pumping work plays an important role due to the effect of reducing the intake section to generate the swirl motion. es_ES
dc.description.sponsorship This work was supported by GM Global R&D and the Spanish Ministry of Economy and Competitiveness (TRA2013-41348-R).
dc.language Inglés es_ES
dc.publisher SAGE Publications es_ES
dc.relation MINECO/TRA2013-41348-R es_ES
dc.relation.ispartof International Journal of Engine Research es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Heat transfer es_ES
dc.subject Global energy balance es_ES
dc.subject Engine es_ES
dc.subject Swirl es_ES
dc.subject Efficiency es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.title Effect of in-cylinder swirl on engine efficiency and heat rejection in a light-duty diesel engine es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1177/1468087417693078 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.; Blanco-Cavero, D.; Warey, A.; Domenech, V. (2017). Effect of in-cylinder swirl on engine efficiency and heat rejection in a light-duty diesel engine. International Journal of Engine Research. 18(1-2):81-92. doi:10.1177/1468087417693078 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1177/1468087417693078 es_ES
dc.description.upvformatpinicio 81 es_ES
dc.description.upvformatpfin 92 es_ES
dc.type.version info:eu repo/semantics/publishedVersion es_ES
dc.description.volume 18 es_ES
dc.description.issue 1-2 es_ES
dc.relation.pasarela 329068 es_ES
dc.contributor.funder Ministerio de Economía, Industria y Competitividad (MINECO) es_ES


This item appears in the following Collection(s)

Show simple item record