Effect of Split Injection Pattern on Combustion and Emission Characteristics of D.I. Diesel Engine - 4th Report: Effect of Injection Pattern on Emission Formation Process

Effects of Injection pattern on Emission formation process of a D.I. Diesel engine with a total in-cylinder sampling system were investigated. While keeping the injection pressure and total injection quantity constant, a ratio of amounts of fuel injected between two injection pulses and the injection interval were varied. The concentration of smoke and NOX emission were measured at different crank angles to obtain in-cylinder histories of these concentration products and the in-cylinder pressure was analyzed. The emission formation processes were discussed with the combustion processes and the result of the engine experiment. The results account for the effect of split injection pattern on the combustion and emission characteristics.