The work aims at developing and setting up a model able to predict the diesel spray evolution to be integrated into a complete thermodynamic model of the engine. Previous papers have been devoted to realize a numerical model for the injection system, in which a lumped parameter + one-dimensional approach is employed. Such a model has been now enhanced by introducing a quasi-dimensional model for fuel break up, diffusion and penetration processes. A self-developed heating sub-model is included in the model, which enables the evaluation of the influence of the fuel properties on the evaporation process. As a result, the injection system simulation model gives indications on the spray formation process and it is used into a lumped parameter model of the combustion process. Results concerning the influence of fuel properties on the evaporation process are presented and discussed, pointing out its effect on engine performance.

Chiatti, G., Chiavola, O., Palmieri, F. (2009). Phenomenological Multi-Step Modeling of Diesel Injection and Combustion. In Proceedings of SAE NA Congress 2009 [10.4271/2009-01-0835].

Phenomenological Multi-Step Modeling of Diesel Injection and Combustion

CHIATTI, Giancarlo;CHIAVOLA, ORNELLA;PALMIERI, FULVIO
2009-01-01

Abstract

The work aims at developing and setting up a model able to predict the diesel spray evolution to be integrated into a complete thermodynamic model of the engine. Previous papers have been devoted to realize a numerical model for the injection system, in which a lumped parameter + one-dimensional approach is employed. Such a model has been now enhanced by introducing a quasi-dimensional model for fuel break up, diffusion and penetration processes. A self-developed heating sub-model is included in the model, which enables the evaluation of the influence of the fuel properties on the evaporation process. As a result, the injection system simulation model gives indications on the spray formation process and it is used into a lumped parameter model of the combustion process. Results concerning the influence of fuel properties on the evaporation process are presented and discussed, pointing out its effect on engine performance.
2009
Chiatti, G., Chiavola, O., Palmieri, F. (2009). Phenomenological Multi-Step Modeling of Diesel Injection and Combustion. In Proceedings of SAE NA Congress 2009 [10.4271/2009-01-0835].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/174419
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