Modeling Fuel and EGR Effects under Conventional and Low Temperature Combustion Conditions
2013
Precise combustion control and a wider operating load range are the two major challenges in the application of advanced combustion modes, as the combustion process is chemical kinetically driven and thus is sensitive to the fuel composition. Although diesel fuels are complex multicomponent mixtures, most previous research has been carried out using simple single- or two-component surrogate models. This assumption leads to inaccuracies when modeling advanced combustion systems due to differences between the model and real fuel compositions. The present study proposes multicomponent surrogate models for three different diesel fuels that mimic the compositions and property variations of European and American diesel fuels. The composition of the surrogate fuels were arrived at by modeling the distillation data of the three fuels to within 1.5% maximum absolute error. The developed surrogate models were then applied to predict the combustion and emission characteristics of the three fuels tested in a single cy...
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