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. Number concentrations and exhaust rate of PM emitted from laminar diffusion flames of gasoline fuels (JIS No.1 and No.2) and hydrocarbon fuels of various chemical structures such as alkane, alkene, iso-alkane, iso-alkene, cyclo-alkane, cyclo-alkene and aromatic were investigated by SMPS (Scanning Mobility Particle Sizer). In addition, relation between PM exhaust rate and RON (research octane number) was discussed.
