Heat transfer, knock modeling and cyclic variability in a “downsized” spark-ignition turbocharged engine (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Heat transfer, knock modeling and cyclic variability in a “downsized” spark-ignition turbocharged engine (Articolo in rivista) (literal)

Anno

• 2011-01-01T00:00:00+01:00 (literal)

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

• 10.4208/aamm.10-10s2-04 (literal)

Alternative label

• Bozza F. 1, Siano D. 2, Costa M. 2 (2011)
  Heat transfer, knock modeling and cyclic variability in a “downsized” spark-ignition turbocharged engine
  in Advances in applied mathematics and mechanics; Global Science Press, Wanchai (Cina)
  (literal)

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

• Bozza F. 1, Siano D. 2, Costa M. 2 (literal)

Pagina inizio

• 310 (literal)

Pagina fine

• 326 (literal)

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

• IF(2011):0.75 (literal)

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

• 3 (literal)

Rivista

• Advances in applied mathematics and mechanics (Rivista)

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

• DOI:10.4208/aamm.10-10s2-04 (ISSN 2070-0733). (literal)

Note

• Scopu (literal)
• ISI Web of Science (WOS) (literal)

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

• 1) Università ”Federico II”, Napoli; 2) Istituto Motori, CNR, Napoli. (literal)

Titolo

• Heat transfer, knock modeling and cyclic variability in a “downsized” spark-ignition turbocharged engine (literal)

Abstract

• In the present paper a combined procedure for the quasi-dimensional modelling of heat transfer, combustion and knock phenomena in a ”downsized” Spark Ignition two-cylinder turbocharged engine is presented. The procedure is extended to also include the effects consequent the Cyclic Variability. Heat transfer is modelled by means of a Finite Elements model. Combustion simulation is based on a fractal description of the flame front area. Cyclic Variability (CV) is characterized through the introduction of a random variation on a number of parameters controlling the rate of heat release (air/fuel ratio, initial flame kernel duration and radius, laminar flame speed, turbulence intensity). The intensity of the random variation is specified in order to realize a Coefficient Of Variation (COV) of the Indicated Mean Effective Pressure (IMEP) similar to the one measured during an experimental campaign. Moreover, the relative importance of the various concurring effects is established on the overall COV. A kinetic scheme is then solved within the unburned gas zone, characterized by different thermodynamic conditions occurring cycle-by-cycle. In this way, an optimal choice of the ”knock-limited” spark advance is effected and compared with experimental data. Finally, the CV effects on the occurrence of individual knocking cycles are assessed and discussed. (literal)

Editore

• Global Science Press (Editore)

Prodotto di

• Istituto motori (IM) (Istituto)
• Metodologie di modellazione e controllo del processo di combustione e componentistica avanzata per il miglioramento dell'efficienza dei motori A.C. (ET.P02.002.001) (Modulo)

Autore CNR

• MICHELA COSTA (Unità di personale interno)
• DANIELA SIANO (Persona)
• FABIO BOZZA (Unità di personale esterno)

Insieme di parole chiave

• Parole chiave di "Heat transfer, knock modeling and cyclic variability in a “downsized” spark-ignition turbocharged engine" (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto motori (IM) (Istituto)
• Metodologie di modellazione e controllo del processo di combustione e componentistica avanzata per il miglioramento dell'efficienza dei motori A.C. (ET.P02.002.001) (Modulo)

Autore CNR di

• DANIELA SIANO (Persona)
• MICHELA COSTA (Unità di personale interno)
• FABIO BOZZA (Unità di personale esterno)

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

• Advances in applied mathematics and mechanics (Rivista)

Editore di

• Global Science Press (Editore)

Insieme di parole chiave di

• Parole chiave di "Heat transfer, knock modeling and cyclic variability in a “downsized” spark-ignition turbocharged engine" (Insieme di parole chiave)