ディーゼル機関における低セタン価燃料利用のためのパイロット噴射による燃焼制御(熱工学,内燃機関,動力など)

概要

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This paper investigates a combution control technique for utilizing low cetane number fuels in diesel engines. Two types of light cyclic oil (LCO) with cetane index of 23 and 31 were tested. The influences of the pilot injection on the combustion, thermal efficiency, and exhaust emissions were examined in a single cylinder diesel engine equipped with a common-rail type fuel injection system. The results show that LCO with cetane index of 31 brings higher rate of pressure-rise, higher NO_x and lower smoke emissions compared to diesel fuel because of an enhanced premixing due to a longer ignition delay. However, the pilot injection enables the engine to operate on the LCO smoothly without causing the too high rate of pressure-rise. The pilot injection also enables the operation on the LCO with cetane index of 23 at selected load conditions.
社団法人日本機械学会の論文
2007-09-25