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Study on the Effects of Oxygenated Fuels on Diesel Engine Performance

The physicochemical characteristics of a new composite oxygenated fuel named oligomeric polyoxymethylene dimethyl ether and DMM10 (the blend of this fuel and conventional diesel oil with 10% in volume) were analyzed. The power performance, fuel economy, combustion characteristics and exhaust gas emission of a four strokes, direct injection, turbocharged and intercooled diesel engine fuelled with DMM10 and diesel fuel were analyzed and compared. The results show that in comparison to original diesel engine, when the engine fuelled with DMM10 blend fuel, the power performance remains unchanged; BSEC decrease slightly, smoke emission decreases obviously and its decrease rate is up to 72%.