多段噴射機構付エンジンによる低セタン指数油の燃焼改善

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タイトル別名
  • Improvement of Combustion for Low Cetane Fuel with Multi Injection Engine
  • タダン フンシャ キコウ ツキ エンジン ニ ヨル テイセタン シスウユ ノ ネンショウ カイゼン

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Light Cycle Oil (LCO) is distillate oil obtained from Fluid Catalytic Cracking (FCC) unit. The calorific value per volume (J/cm3) is higher, while the cetane index is lower than A-type fuel oil (JIS K2205) . It was found in this study that a single cylinder engine with a two-stage injection system of pilot and main charge of fuel realized stable operation for LCO with lower fuel consumption per volume and equivalent quality of exhaust gases as compared with A-type fuel oil. In pilot injection, there were two effects, combustion promotion by premixing and pressure increasing rate control by division injection. In main injection, the difference of ignition delay based on cetane index decreased with the fuel injection into combustion chamber warmed at 1000K or more by pilot combustion.

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