%0 Journal Article %T 3d Modeling of Combustion for Di-Si Engines %+ IFP Energies nouvelles (IFPEN) %A Duclos, J. P. %A Zolver, M. %A Baritaud, T. %< avec comité de lecture %@ 1294-4475 %J Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles %I Institut Français du Pétrole (IFP) %V 54 %N 2 %P 259-264 %8 1999-03 %D 1999 %R 10.2516/ogst:1999023 %Z Physics [physics] %Z Engineering Sciences [physics]Journal articles %X 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. %G English %2 https://ifp.hal.science/hal-02075792/document %2 https://ifp.hal.science/hal-02075792/file/duclos_v54n2.pdf %L hal-02075792 %U https://ifp.hal.science/hal-02075792 %~ IFP %~ OGST