Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 09, 2018 - September 12, 2018
In a gasoline direct injection (GDI) engine, fuel is injected into a cylinder directly to achieve higher thermal efficiency. However, in GDI engine, some of the fuel injected into engine cylinder impinges on the piston top and cylinder wall, and fuel film results from it on the wall. When the flame arrives the fuel liquid film, liquid film is vaporized and vaporized fuel is burned. Its combustion state looks like a sooty diffusion flame of liquid pool combustion. Then, soot formation from shallow dish pool combustion flame under high ambient temperature condition is investigated as the fundamental study of fuel film combustion in GDI engine. In this study, Measurement method of PM exhausted from unsteady combustion of liquid pool flame was developed. And relationships among flame length, fuel consumption rate, and PM exhaust rate were discussed. As the results, much of PM was exhausted at the final stage of the pool combustion.
