G0610304 PM formed from laminar diffusion flames by various hydrocarbon fuels

Abstract

Since the engine combustion is affected by various engine parameters as well as fuel characteristics, it is very difficult to find out the clear effect of fuel property on it. In order to clarify the change of emission characteristic caused by fuel trend, we propose a fundamental flame research method using a small pool flame system. Exhaust rate of PM emitted from laminar diffusion flames of gasoline fuels (JIS No.1 and No.2) were investigated by filter sampling method. From this result, it was cleared that gasoline flames, PM exhaust rate of JIS No.1 gasoline flame was higher than that of JIS No.2 gasoline. Then, hydrocarbon fuels of various chemical structures such as alkane, alkene, iso-alkane, iso-alkene, cyclo-alkane, cyclo-alkene and aromatic were also investigated. From these results, relation between chemical structure and PM exhaust rate was discussed.