3d Modeling of Combustion for Di-Si Engines

J. P. Duclos (1) , M. Zolver (1) , T. Baritaud (1)

1 IFPEN - IFP Energies nouvelles

Direct injection of gasoline is a promising concept to reduce fuel consumption of SI engines. The development of GDI engines is difficult and 3D CFD is a way to support its design. It requires models able to describe the spray and its evaporation and combustion. This paper presents a model, the ECFM, that enables to compute combustion for stratified load in the GDI engines. This model is a development of the Coherent Flame Model which includes thermal expansion effects, and is coupled with a burnt/unburnt gases conditionnal thermodynamic properties description. The model is validated by comparing measurements and computations on the GDI Mitsubishi engine in production.

Domaines: Physique [physics]; Sciences de l'ingénieur [physics]

J. P. Duclos, M. Zolver, T. Baritaud. 3d Modeling of Combustion for Di-Si Engines. Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, 1999, 54 (2), pp.259-264. ⟨10.2516/ogst:1999023⟩. ⟨hal-02075792⟩