Effect of the nozzle geometry on fuel dispersion in non-evaporative and evaporative conditions for a diesel injector (Contributo in atti di convegno)

Type
Label
  • Effect of the nozzle geometry on fuel dispersion in non-evaporative and evaporative conditions for a diesel injector (Contributo in atti di convegno) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Alternative label
  • L.Allocca, S.Y.Lee, L.Marchitto, A. Montanaro, J. Naber, A. Zhang (2013)
    Effect of the nozzle geometry on fuel dispersion in non-evaporative and evaporative conditions for a diesel injector
    in ILASS - Europe 2013, European Conference on Liquid Atomization and Spray Systems, Chania (Greece), 1-4 September 2013
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • L.Allocca, S.Y.Lee, L.Marchitto, A. Montanaro, J. Naber, A. Zhang (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • S.Y.Lee- Michigan Technological University (USA) J.Naber-Michigan Technological University (USA) A.Zhang -Michigan Technological University (USA) (literal)
Titolo
  • Effect of the nozzle geometry on fuel dispersion in non-evaporative and evaporative conditions for a diesel injector (literal)
Abstract
  • Schlieren - Mie-scattering combined technique for image acquisition were built-up to study the liquid and vapor phases of a diesel fuel at engine-like conditions. The sprays were generated by a Common Rail injection system fuelling two axially-disposed single-hole injectors with k-factors 0 and 1.5. Three injection pressures were explored, 70, 120, and 180 MPa, while the sprays developed in a quiescent vessel filled with inert gas. The gas temperature varied from 373 to 900 K realizing both non-vaporizing and vaporizing conditions at back-densities typical of a diesel engine. Spray contours and penetrations of the liquid and vapor phase were extracted by processing the images of the spray acquired by a high-speed camera (40,000 fps) and enlightened by two pulsed LED light sources. The images were analyzed by digital processing software for distinguishing fuel spray from ambient gas. Mie-scattering for liquid phase and schlieren imaging visualization techniques for fuel evaporation were applied and the effects of the nozzle shapes on the fuel dispersion will be discussed. (literal)
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