A Study on NO Reduction Caused by Thermal Cracking Hydrocarbons during Rich Diesel Combustion

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This study tries to investigate the reduction of nitric oxide by thermally cracked hydrocarbons under rich condition during diesel combustion. Experiments using flow reactor system, which follows the chemical process of fuel at high temperature and atmospheric pressure, show that thermal cracking of fuel starts at about 1000K, and lower hydrocarbons mainly composed of C<sub>2</sub>H<sub>4</sub> and CH<sub>4</sub> are formed. NO can be reduced when fuel is thermally cracked and oxidized. A larger amount of NO is reduced when thermal cracking hydrocarbons are increased in quantity under rich and high temperature condition. Among decomposed hydrocarbons, C<sub>2</sub>H<sub>4</sub> is easily decomposed and affects deNO mechanism. Chemical kinetic calculation using CHEMKIN III reveals the mechanism. NO is reduced through the reaction of HCCO or CH<sub>2</sub> with NO. In these reaction paths, C<sub>2</sub>H<sub>2</sub> is an essential species. The computation also shows that this deNO mechanism can be actualized in the practical diesel combustion.

収録刊行物

  • JSME international journal. Ser. B, Fluids and thermal engineering

    JSME international journal. Ser. B, Fluids and thermal engineering 49(2), 526-532, 2006-05-15

    一般社団法人日本機械学会

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各種コード

  • NII論文ID(NAID)
    110004717710
  • NII書誌ID(NCID)
    AA10888815
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13408054
  • NDL 記事登録ID
    7903195
  • NDL 雑誌分類
    ZN11(科学技術--機械工学・工業)
  • NDL 請求記号
    Z53-Y271
  • データ提供元
    CJP書誌  NDL  NII-ELS  J-STAGE 
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