Detailed experimental and numerical investigation of the spray structure in a GDI high-pressure swirl injector (Contributo in atti di convegno)

Type

• Contributo in atti di convegno (Classe)
• Prodotto della ricerca (Classe)

Label

• Detailed experimental and numerical investigation of the spray structure in a GDI high-pressure swirl injector (Contributo in atti di convegno) (literal)

Anno

• 2006-01-01T00:00:00+01:00 (literal)

Alternative label

• Fontanesi S., Gagliardi V., Malaguti S., Valentino G., Auriemma M. (2006)
  Detailed experimental and numerical investigation of the spray structure in a GDI high-pressure swirl injector
  in 10th International Conference on Liquid Atomization and Spray Systems - ICLASS 2006, Kyoto (Japan)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Fontanesi S., Gagliardi V., Malaguti S., Valentino G., Auriemma M. (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

• ISBN 4-9902774-1-4, Paper ICLASS06-189. (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto

• The aim of the present work was focused on the effect of the injection pressure on the flow pattern and droplets size in a gasoline hollow-cone spray generated by a swirled injector, applying Particle Image Velocimetry (PIV) and Phase Doppler Anemometry (PDA). Experiments were carried out in the range of injection pressures between 6 and 10 MPa using a common rail injection system, a commercial swirled type injector with a nozzle diameter of 0.50 mm and a cone angle of 67°. The investigation was carried out injecting the fuel in a chamber at ambient temperature and pressure. A 2-D imaging technique was used to follow the global evolution of the spray as function of the injection time in order to estimate the jet development, the morphology of the spray, and the instantaneous velocity field of fuel droplets. PIV images were captured. A PDA system was used to acquire, simultaneously, the droplets velocity as well te droplets size. (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• C.N.R. Istituto Motori (literal)

Titolo

• Detailed experimental and numerical investigation of the spray structure in a GDI high-pressure swirl injector (literal)

Abstract

• Results provided detailed information on the spatial velocity distribution and size of droplets close to the nozzle region. Ensemble averaged velocity field of fuel droplets obtained on the vertical plane through the injector axis showed high velocity values up to 100 m/s in the early stage of injection, whereas during the transition to completely developed main spray, droplets travel at lower velocities. The velocity field obtained on the cross section of the spray, at locations close to the nozzle (5 and 10 mm) and in the early stage of injection (up to 0.6 ms), showed a symmetric radial velocity field around the spray axis. Size measurements performed near the nozzle showed a D10 profile constant along the stationary period of injection and not affected by the injection pressure. (literal)

Prodotto di

• Istituto motori (IM) (Istituto)
• Strategie per l’ottimizzazione della combustione per motori a basse emissioni (ET.P02.004.001) (Modulo)

Autore CNR

• MADDALENA AURIEMMA (Persona)
• GERARDO VALENTINO (Unità di personale interno)

Insieme di parole chiave

• Parole chiave di "Detailed experimental and numerical investigation of the spray structure in a GDI high-pressure swirl injector" (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto motori (IM) (Istituto)
• Strategie per l’ottimizzazione della combustione per motori a basse emissioni (ET.P02.004.001) (Modulo)

Autore CNR di

• GERARDO VALENTINO (Unità di personale interno)
• MADDALENA AURIEMMA (Persona)

Insieme di parole chiave di

• Parole chiave di "Detailed experimental and numerical investigation of the spray structure in a GDI high-pressure swirl injector" (Insieme di parole chiave)