As a consequence of the endless price growing of oil, and oil derivate fuels, automotive industry is experiencing a concerning decreasing in sales. Accordingly, in order to meet customer needs, there is every day a greater interest in solutions for increasing engine efficiency. On the other hand the growing attention to environmental problems leads to increasingly restrictive regulations, such as European EURO 4 and EURO 5. Direct injection of gaseous fuel has emerged to be a high potential strategy to tackle both environmental and fuel economy requirements. However since the electronic gaseous injection technology is rather new for automotive applications, limited experience exists on the optimum configuration of the injection system and the combustion chamber. To facilitate the development of these applications computer models are being developed to simulate gaseous injection, air entrainment and the ensuing combustion. This paper introduces a new method for modelling the injection process of gaseous fuels in multi-dimensional simulations. The proposed model allows holding down grid requirements, thus making it compatible with the three-dimensional simulation of an internal combustion engine. The model is validated and calibrated by comparing numerical results with available experimental data. To highlight the potential applications, some numerical results of the three-dimensional combustion process in a gas engine are presented.

Andreassi, L., Facci, A., Ubertini, S. (2009). A multidimensional model to simulate direct gaseous fuel injection in internal combustion engines. In ASME 2009 Internal Combustion Engine Division Spring Technical Conference (pp.477-486) [10.1115/ICES2009-76008].

A multidimensional model to simulate direct gaseous fuel injection in internal combustion engines

ANDREASSI, LUCA;
2009-01-01

Abstract

As a consequence of the endless price growing of oil, and oil derivate fuels, automotive industry is experiencing a concerning decreasing in sales. Accordingly, in order to meet customer needs, there is every day a greater interest in solutions for increasing engine efficiency. On the other hand the growing attention to environmental problems leads to increasingly restrictive regulations, such as European EURO 4 and EURO 5. Direct injection of gaseous fuel has emerged to be a high potential strategy to tackle both environmental and fuel economy requirements. However since the electronic gaseous injection technology is rather new for automotive applications, limited experience exists on the optimum configuration of the injection system and the combustion chamber. To facilitate the development of these applications computer models are being developed to simulate gaseous injection, air entrainment and the ensuing combustion. This paper introduces a new method for modelling the injection process of gaseous fuels in multi-dimensional simulations. The proposed model allows holding down grid requirements, thus making it compatible with the three-dimensional simulation of an internal combustion engine. The model is validated and calibrated by comparing numerical results with available experimental data. To highlight the potential applications, some numerical results of the three-dimensional combustion process in a gas engine are presented.
ASME ICES2009
Milwaukee, Wisconsin, USA
2009
Rilevanza internazionale
2009
Settore ING-IND/08 - MACCHINE A FLUIDO
English
Intervento a convegno
Andreassi, L., Facci, A., Ubertini, S. (2009). A multidimensional model to simulate direct gaseous fuel injection in internal combustion engines. In ASME 2009 Internal Combustion Engine Division Spring Technical Conference (pp.477-486) [10.1115/ICES2009-76008].
Andreassi, L; Facci, A; Ubertini, S
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/42117
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