Spray-combustion interaction mechanism of multiple-injection under diesel engine conditions (Articolo in rivista)

Type
Label
  • Spray-combustion interaction mechanism of multiple-injection under diesel engine conditions (Articolo in rivista) (literal)
Anno
  • 2015-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.proci.2014.07.054 (literal)
Alternative label
  • Khanh Cung; Moiz, Abdul; Johnson, Jaclyn; Lee, Seong-Young; Kweon, Chol-Bum; Montanaro, Alessandro (2015)
    Spray-combustion interaction mechanism of multiple-injection under diesel engine conditions
    in Proceedings of the Combustion Institute
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Khanh Cung; Moiz, Abdul; Johnson, Jaclyn; Lee, Seong-Young; Kweon, Chol-Bum; Montanaro, Alessandro (literal)
Pagina inizio
  • 3061 (literal)
Pagina fine
  • 3068 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 35 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Khanh Cung; Moiz, Abdul; Johnson, Jaclyn; Lee, Seong-Young:Michigan Technological University (USA); Kweon, Chol-Bum :US ARL(USA) (literal)
Titolo
  • Spray-combustion interaction mechanism of multiple-injection under diesel engine conditions (literal)
Abstract
  • Multiple-injection has shown significant benefits in the reduction of combustion emissions and soot formation. However, there is a need to understand the secondary flow-induced air-fuel mixture formation and subsequent combustion mechanism under multiple-injection. An experiment was performed by changing the dwell time between the pilot and main injections under the conditions of 23 kg/m(3) ambient density with 0% O-2 (non-combusting) and 15% O-2 (combusting) ambient conditions, at an injection pressure of 120 MPa. The mass ratios of pilot and main injections in the study were 15/85% and 20/80%. A hybrid shadowgraph and Mie scattering imaging technique in a nearly simultaneous mode along the same line of sight was used to visualize the spray and flame luminosity. Pilot-main spray flame properties including ignition delay, ignition location, and lift-off length were characterized from experimental images. CFD simulation of pilot-main spray combustion was performed under the same experimental conditions to provide additional insights into the combustion process. The air-fuel mixing field and ignition process followed by main injection flame structure are significantly altered at different dwells. The spray-to-flame interaction mechanism model has been established for the development of an optimal multiple-injection scheme for, possibly, low soot formation and emissions. (C) 2014 The Combustion Institute. Published by Elsevier Inc. All rights reserved. (literal)
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