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dc.contributor.author
Ramajo, Damian Enrique
dc.contributor.author
Zanotti, Angel Luis
dc.contributor.author
Nigro, Norberto Marcelo
dc.date.available
2017-02-13T20:45:25Z
dc.date.issued
2011-06
dc.identifier.citation
Ramajo, Damian Enrique; Zanotti, Angel Luis; Nigro, Norberto Marcelo; In-cylinder flow control in a 4-valve spark ignition engine: numerical and experimental steady rig tests; Professional Engineering Publishing Ltd; Proceedings Of The Institution Of Mechanical Engineers Part D-journal Of Automobile Engineering; 225; 6; 6-2011; 813-828
dc.identifier.issn
0954-4070
dc.identifier.uri
http://hdl.handle.net/11336/12929
dc.description.abstract
Computational fluid dynamic (CFD) simulations and experimental steady flow tests (flow discharge, swirl, and tumble) were carried out to study the in-cylinder flow in a commercial four-valve spark ignition engine. The present investigation was aimed at analysing and controlling the generation of macro-vortex structures (swirl and tumble) during the inlet process. A comparative study of the most commonly employed tumble benches along with in-house design was performed, the last showing some advantages with respect to the others. The outcomes from the simulations were in agreement with experimental results. Mainly, the tumble generation rate was in general proportional to the valve lift. However, tumble was reduced drastically at medium valve lift due to a change in the vortex pattern. A stagnation zone was observed between inlet valves. CFD calculations successfully captured this tumble-fall effect, which was related to characteristic changes in the vortex pattern downstream of the inlet valves at medium valve lift. This affects tumble production without affecting the mass flowrate efficiency. Finally, at high valve lifts the tumble production and the vortex pattern were recovered. The capability of the cylinder head to induce swirl, tumble, or combined swirl–tumble by modifying the valve timing or by introducing adjustable flow deflectors was evaluated using CFD. Several valve timing strategies were analysed: some of them produced significant swirl, but introduced high mass flowrate losses. On the other hand, adjustable flow deflectors were shown to be an interesting alternative to induce swirl–tumble at low load and to improve tumble at high load.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Professional Engineering Publishing Ltd
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Steady Rig Tests
dc.subject
Tumble
dc.subject
Swirl
dc.subject
Cfd
dc.subject.classification
Otras Ingeniería Mecánica
dc.subject.classification
Ingeniería Mecánica
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
In-cylinder flow control in a 4-valve spark ignition engine: numerical and experimental steady rig tests
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-02-09T13:52:05Z
dc.journal.volume
225
dc.journal.number
6
dc.journal.pagination
813-828
dc.journal.pais
Reino Unido
dc.journal.ciudad
London
dc.description.fil
Fil: Ramajo, Damian Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico. Centro de Investigación de Métodos Computacionales; Argentina
dc.description.fil
Fil: Zanotti, Angel Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico. Centro de Investigación de Métodos Computacionales; Argentina
dc.description.fil
Fil: Nigro, Norberto Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico. Centro de Investigación de Métodos Computacionales; Argentina
dc.journal.title
Proceedings Of The Institution Of Mechanical Engineers Part D-journal Of Automobile Engineering
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://journals.sagepub.com/doi/abs/10.1177/0954407011400153
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1177/0954407011400153


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