Modeling and performance optimization of a direct injection spark ignition engine for the avoidance of knocking (Contributo in volume (capitolo o saggio))

Type
Label
  • Modeling and performance optimization of a direct injection spark ignition engine for the avoidance of knocking (Contributo in volume (capitolo o saggio)) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Alternative label
  • M.Costa, U.Sorge, P.Sementa, B.M.Vaglieco (2014)
    Modeling and performance optimization of a direct injection spark ignition engine for the avoidance of knocking
    in Proceedings of the 4th International Conference on Simulation and Modeling Methodologues, Technologies and Applications, 2014
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • M.Costa, U.Sorge, P.Sementa, B.M.Vaglieco (literal)
Pagina inizio
  • 484 (literal)
Pagina fine
  • 496 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • SIMULTECH 2014 - Vienna (austria) - 28-30 agosto 2014 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • Proceedings of the 4th International Conference on Simulation and Modeling Methodologues, Technologies and Applications (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • -- (literal)
Titolo
  • Modeling and performance optimization of a direct injection spark ignition engine for the avoidance of knocking (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 978-989-758-038-3 (literal)
Abstract
  • The paper applies simulation techniques for the prediction and optimization of the thermo-fluid-dynamic phenomena characterising the energy conversion process in an internal combustion engine. It presents the development and validation of a 3D CFD model for a GDI optically accessible engine operating either under stoichiometric homogeneous charges or under overall lean mixtures. The model validation is realized on the ground of experimental measurements of the in-cylinder pressure cycle and of the available optical images. The model comprehends properly developed sub-models for the spray dynamics and the spray-wall interaction. This last is particularly important due to the nature of the mixture formation mode, being of the wall-guided type. In the stoichiometric mixture case, the possible occurrence of knocking is also considered by means of a sub-model able to reproduce the pre-flame chemical activity. The CFD tool is finally included in a properly formulated optimization problem aimed at minimizing the engine specific fuel consumption with the avoidance of knocking. The optimization, performed through a non-evolutionary algorithm, allows determining the best engine control parameters (spark advance and start of injection). (literal)
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