Twin Shaped Semi-Premixed Diesel Combustion with a Combustion Chamber Dividing the Fuel Sprays (First Report)

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  • 噴霧分配型燃焼室を用いた双峰形部分予混合化ディーゼル燃焼（第1報）
  • 噴霧分配型燃焼室を用いた双峰形部分予混合化ディーゼル燃焼(第1報)CFD解析による噴霧分配特性の検討
  • フンム ブンパイガタ ネンショウシツ オ モチイタ ソウホウケイ ブブン ヨ コンゴウカ ディーゼル ネンショウ(ダイ1ポウ)CFD カイセキ ニ ヨル フンム ブンパイ トクセイ ノ ケントウ
  • －CFD 解析による噴霧分配特性の検討－
  • - CFD Analysis on Fuel Spray Distribution -

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Abstract

The distribution of fuel sprays and mixture in a combustion chamber with twin shaped semi-premixed diesel combustion were analyzed with CFD code. Combustion is realized with a combination of the premixed combustion with the first injection and the spray combustion with the second injection during or just after the premixed diesel combustion. The CFD code suggested that in a combustion chamber dividing the first and the second fuel sprays to upper and lower zones of the chamber, effected with a projection provided in the combustion chamber, the second injection spray injected into the burned zone of the first injection was significantly reduced compared with that in an ordinary re-entrant combustion chamber.

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