The paper describes a CFD multidimensional and multi-cycle engine analysis applied to a novel 2-Stroke HSDI Diesel engine, under development since a few years at the University of Modena and Reggio Emilia. In particular, six operating conditions are considered, two of them at full load and four at partial. The simulation tool is STAR-CD, a commercial software extensively applied by the authors to HSDI Diesel engines. Furthermore, an experimental calibration of the combustion model has been performed and reported in this paper, carrying out CFD simulations on a reference Four Stroke HSDI Diesel engine. As expected, in the multi-cycle analysis a wide dependence of pollutants on trapped charge composition has been found. Much less relevant is the cycle-by-cycle variation in terms of performance parameters, such as trapped mass, IMEP, combustion efficiency, etc. For these parameters, 2 cycle are sufficient to reach a reasonable convergence, while for pollutants 3 or more cycles are required. Information from multi-cycle simulation has been used to refine a 1D engine cycle model, providing a prediction on engine performance at several operating conditions. In particular, the influence of the combustion sub-model has been investigated, comparing the results obtained by entering empirical heat release laws to the results provided by a combustion model refined through multi-cycle 3D simulations.

CFD-3D Multi-Cycle Analysis on a New 2-Stroke HSDI Diesel Engine / Cantore, Giuseppe; Fontanesi, Stefano; Malaguti, Simone; Mattarelli, Enrico. - In: SAE TECHNICAL PAPER. - ISSN 0148-7191. - STAMPA. - (2009), pp. 1-12. (Intervento presentato al convegno 2009 SAE World Congress & Exhibition tenutosi a Detroit, USA nel Aprile, 2009) [10.4271/2009-01-0707].

CFD-3D Multi-Cycle Analysis on a New 2-Stroke HSDI Diesel Engine

CANTORE, Giuseppe;FONTANESI, Stefano;MALAGUTI, Simone;MATTARELLI, Enrico
2009

Abstract

The paper describes a CFD multidimensional and multi-cycle engine analysis applied to a novel 2-Stroke HSDI Diesel engine, under development since a few years at the University of Modena and Reggio Emilia. In particular, six operating conditions are considered, two of them at full load and four at partial. The simulation tool is STAR-CD, a commercial software extensively applied by the authors to HSDI Diesel engines. Furthermore, an experimental calibration of the combustion model has been performed and reported in this paper, carrying out CFD simulations on a reference Four Stroke HSDI Diesel engine. As expected, in the multi-cycle analysis a wide dependence of pollutants on trapped charge composition has been found. Much less relevant is the cycle-by-cycle variation in terms of performance parameters, such as trapped mass, IMEP, combustion efficiency, etc. For these parameters, 2 cycle are sufficient to reach a reasonable convergence, while for pollutants 3 or more cycles are required. Information from multi-cycle simulation has been used to refine a 1D engine cycle model, providing a prediction on engine performance at several operating conditions. In particular, the influence of the combustion sub-model has been investigated, comparing the results obtained by entering empirical heat release laws to the results provided by a combustion model refined through multi-cycle 3D simulations.
2009
2009 SAE World Congress & Exhibition
Detroit, USA
Aprile, 2009
1
12
Cantore, Giuseppe; Fontanesi, Stefano; Malaguti, Simone; Mattarelli, Enrico
CFD-3D Multi-Cycle Analysis on a New 2-Stroke HSDI Diesel Engine / Cantore, Giuseppe; Fontanesi, Stefano; Malaguti, Simone; Mattarelli, Enrico. - In: SAE TECHNICAL PAPER. - ISSN 0148-7191. - STAMPA. - (2009), pp. 1-12. (Intervento presentato al convegno 2009 SAE World Congress & Exhibition tenutosi a Detroit, USA nel Aprile, 2009) [10.4271/2009-01-0707].
File in questo prodotto:
File Dimensione Formato  
2009-01-0707.pdf

Accesso riservato

Descrizione: Articolo completo
Tipologia: Versione pubblicata dall'editore
Dimensione 583.4 kB
Formato Adobe PDF
583.4 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/638138
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 10
  • ???jsp.display-item.citation.isi??? ND
social impact