Development of an integrated reduced fuel oxidation and soot precursor formation mechanism for CFD simulations of diesel combustion

► A reduced mechanism for diesel combustion and soot formation is developed. ► Analyses of rate of production and temperature sensitivity are used for the reduction. ► The mechanism reproduced the ignition delay periods under 48 shock tube conditions. ► Coupled with CFD solver, the mechanism captured engine combustion characteristics. ► In-cylinder soot properties and temporal/spatial soot evolution are predicted well.