Abstract
To investigate particular matter (PM) reduction mechanism of bio-diesel fuel in diesel combustion starting from thermal decomposition, fundamental and chemical study was carried out using a plug flow reactor and a co-flow diffusion burner. "Methyl Decanoate (C_9H_<19>COOCH_3)" was mixed with n-saturated fuel "Solvent (C_<12>, C_<13>, C_<14>)" by 10 vol.%. Methyl decanoate blended fuel (MD10) reduces exhaust PM by 20〜30% at fuel rich condition, which is notable for solid reduction. Ester bond in Methyl decanoate contributes to oxidation of C_2H_2 or another hydrocarbons during thermal decomposition. Total amount of PAHs from MD10 produced during thermal decomposition is smaller than that from Solvent. Fluorescence intensity for PAHs collected from the burner exhaust follows Solvent > MD10. This trend is similar to PM concentration in the exhaust.
