Thepresent work presents the comparative simulation of a diesel engine fuelled on diesel fuel and biodiesel fuel. Twomodels, based\non tabulated chemistry, were implemented for the simulation purpose and results were compared with experimental data obtained\nfrom a single cylinder diesel engine. The first model is a single zone model based on the Krieger and Bormann combustion model\nwhile the second model is a two-zone model based on Olikara and Bormann combustionmodel. It was shown that both models can\npredict well the engine�s in-cylinder pressure as well as its overall performances. The second model showed a better accuracy than\nthe first, while the first model was easier to implement and faster to compute. It was found that the first method was better suited\nfor real time engine control and monitoring while the second one was better suited for engine design and emission prediction.
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