The effect of micro-explosive fragmentation of water-fuel droplets on their spray combustion emissions

Secondary atomization of liquid fuels in combustion chambers is considered highly promising for cutting emissions of pollutants in exhaust gases, increasing the burnout of fuel and reducing its consumption. This research reports findings on the effect of micro-explosive fragmentation of droplets on the integral characteristics of combustion of two-liquid fuel in a model combustion chamber. Emulsified compositions based on Diesel fuel, gasoline, kerosene, and water were used. The concentrations of combustion product components and soot particles, as well as the exhaust gas temperature were recorded. A mathematical model was used to predict the conditions providing maximum efficiency of micro-explosive fragmentation of fuel droplets in combustion chambers. When generalizing the research findings, a multi-criteria analysis was performed to determine effective conditions of combustion of fuel blends and identify their most rational compositions.