Mixture Properties of Split Injection Spray and Its Combustion/Emission Characteristics of D.I. Diesel Engine
Details
Influences of split injection on combustion and emission characteristics of a D.I. Diesel engine were investigated. A ratio of amount of fuel injected between two injection pulses were varied under the total injection period kept constant. The concentration distributions of the vapor and liquid phases in the splitting fuel spray injected into a high-pressure and high-temperature vessel were measured by means of the Laser Absorption Scattering (LAS) technique. The mixture properties obtained by the LAS measurements were correlated with the engine experiment. The results indicate the possibility that the split injection could reduce NO_x without an increase in BSFC and with a slight increase in the smoke emission.
