Change in Fuel Injection Pressure of Diesel Engine by Using Bio Fuel

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  • 生物資源由来燃料を用いたディーゼルエンジンにおける燃料噴射圧力の変更
  • セイブツ シゲン ユライ ネンリョウ オ モチイタ ディーゼルエンジン ニ オケル ネンリョウ フンシャ アツリョク ノ ヘンコウ

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BDF (Bio Diesel Fuel) which has drawn attention as an alternative fuel containing a lot of oxygen promotes the combustion of diesel engines, hence the improvement in thermal efficiency can be expected. However, the atomization characteristics in the case of BDF are worse than gas oil because the kinetic viscosity is high, and the PM emission tends to increase compared to using gas oil. In this research, the relation between the exhaust gas characteristics and the combustion characteristics were examined respectively in the performance tests by the diesel engines with the common rail fuel injection system that can change fuel injection pressure by using gas oil and BDF. As a result, it was clarified that the operating characteristics were improved by injecting BDF with high pressure.

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