Experimental and numerical characterization of high-pressure sprays for GDI engines (Contributo in atti di convegno)

Type

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

Label

• Experimental and numerical characterization of high-pressure sprays for GDI engines (Contributo in atti di convegno) (literal)

Anno

• 2011-01-01T00:00:00+01:00 (literal)

Alternative label

• Allocca L. 1, Montanaro A. 1, Lucchini T. 2, Brusiani F. 3 (2011)
  Experimental and numerical characterization of high-pressure sprays for GDI engines
  in DIPSI Workshop 2011 on Droplet Impact Phenomena & Spray Investigation, Bergamo (Italy)
  (literal)

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

• Allocca L. 1, Montanaro A. 1, Lucchini T. 2, Brusiani F. 3 (literal)

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

• ISBN: 978-88-97413-03-5. (literal)

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

• Direct-injection is now widely applied in spark-ignition engines in combination with turbocharging to reduce the fuel-consumption and the knock risks. This is achieved through the use of multi-hole, high-pressure injectors whose features are rather different with respect to the hollow-cone, low-pressure configurations that were adopted in the last decade. This last aspect has to be taken into account when multi-dimensional simulations of GDI engines have to be performed. In particular, suitable models are needed to describe the spray atomization and the wall-impingement processes. In this paper experimental investigations were performed using a 6-hole injector in a constant-volume vessel with optical access. Spray images were acquired by a CCD camera and processed to obtain the spray penetration and cone angles for the different tested operating conditions. The effects of injection pressure were evaluated in the range 3.0 – 20 MPa at ambient density of the gas. A flat plate was added to the experimental apparatus for investigation of the spray-wall impingement and liquid-film images were acquired. On the basis of the experimental database, a CFD methodology for gasoline spray simulations was implemented into the Lib-ICE code, developed under the OpenFOAM technology. The evolution of the resulting liquid film was also taken into account by solving the mass and momentum equations on the mesh boundary. (literal)

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

• 1) Istituto Motori, CNR, Napoli; 2) Politecnico di Milano, Milano; 3) Università di Bologna, Bologna. (literal)

Titolo

• Experimental and numerical characterization of high-pressure sprays for GDI engines (literal)

Prodotto di

• Diagnostica avanzata di spray e combustione per motori termici (ET.P02.004.003) (Modulo)
• Institute for Research on Engines (IM) (Istituto)

Autore CNR

• LUIGI ALLOCCA (Unità di personale interno)
• ALESSANDRO MONTANARO (Unità di personale interno)

Incoming links:

Prodotto

• Institute for Research on Engines (IM) (Istituto)
• Diagnostica avanzata di spray e combustione per motori termici (ET.P02.004.003) (Modulo)

Autore CNR di

• LUIGI ALLOCCA (Unità di personale interno)
• ALESSANDRO MONTANARO (Unità di personale interno)