Abstract
In the previous report, the authors have explained the difference of combustion characteristics and diesel emissions between rapeseed oil methyl ester (RME) and diesel fuel in high boost charged system and high-pressure common-rail injection system. In this study the mass of exhaust particulate matter (PM) of RME and diesel fuel were measured quantitatively at various experimental conditions, which were changed from 0% to 40 % of EGR rates at 1200rpm and full load in single cylinder engine. The soluble organic fraction (SOF) in PM was analyzed in order to separate fuel and lubricating oil by gas chromatograph.