Multi-zone Diesel Combustion Model for Prediction of Combustion in Lean Mixture of Gaseous Fuel

Abstract

The aim of this study was to develop the multi-zone diesel combustion model modified to apply for diesel combustion in lean mixture of gaseous fuel. The modified model uses a chemical kinetics simulation called Cantera for predicting combustion. The presented paper shows the effects of CH₄ gas mixed into intake air on the diesel engine. Next, we show modified model behaviors respect to the number of dividing spray region and crank angle step resolution on the simulation. In addition, the predictions of heat release and cylinder pressure by the modified model are compared with the results obtained from experiments with a single-cylinder diesel engine. The results show that the predictions of heat release and cylinder pressure agreed with experimental data by adjusting the coefficients regarding of air entrainment of diesel spray in the modified model. We found that the modified model can estimate qualitative effects of mixing gaseous fuel into intake air on combustion.