乳化パーム油メチルエステルのディーゼル燃焼特性(熱工学,内燃機関,動力など)  [in Japanese] Diesel Combustion Characteristics of Emulsified Palm Oil Methyl Ester(Thermal Engineering)  [in Japanese]

In order to reduce NO_x and smoke emissions from diesel engines with palm oil methyl ester (PME), the combustion characteristics and exhaust emissions of emulsified palm oil methyl ester (EPE) were investigated using a DI diesel engine. From the experimental results, stable EPE can be obtained without adding any emulsifier like as emulsified rapeseed oil methyl ester (ERE). EPE is able to reduce NO_x and smoke emissions as ERE. The optimum water mass fraction for EPE is 15% with regard to the exhaust emissions. Due to the higher ignitability and better combustion characteristics of PME, EPE with 15 mass% water has shorter ignition delay and lower NO_x, HC, CO and smoke emissions compared to ERE and the emulsified gas oil with same water content. EPE and ERE have higher NO_x reduction and lower smoke reduction, which are normalized by the base fuels, compared with the emulsified gas oil.