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. Characteristics of PM exhausted from laminar diffusion flames of gasoline and surrogate fuels were investigated by SMPS (Scanning Mobility Particle Sizer), LPI (Low Pressure Impactor) and combustion type PM analyzer. PM exhausted from flames of various chemical structures such as iso-alkane, cyclo-alkane, olefin and aromatic were also investigated. As the result, it was found that the exhaust-PM concentration and PM size increased with increasing of toluene concentration.
