静電容量変化に基づいた高温作動型NOxセンサ CAPACITIVE TYPE NOx SENSOR OPERABLE AT HIGH TEMPERATURE

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Capacitive type NO sensor which is operable at high temperature was investigated in this study for monitoring NO in flue gases from gasoline engine vehicle. Although the high sensitivity is obtained at temperature lower than 400°C, it is negligibly small at temperature higher than 500°C on large part of the mixed oxide examined. On the other hand, BaSnO<sub>3</sub> or SrSnO<sub>3</sub> mixed with WO<sub>3</sub> exhibits the high sensitivity at temperature higher than 500°C. In particular, mixed oxide capacitor of SrSnO<sub>3</sub>-WO<sub>3</sub> exhibited the high sensitivity to NO at 550°C. Since the capacitance of this oxide increased with increasing NO concentration, in the range from 10 to few 1000ppm. NO concentration can be evaluated with the capacitance of the element. Furthermore, the capacitance of SrSnO<sub>3</sub>-WO<sub>3</sub> is less sensitive to CO<sub>2</sub>, H<sub>2</sub>O and CO comparing that to NO. Consequently, mixed oxide of SrSnO<sub>3</sub>-WO<sub>3</sub> is promising for the capacitive NO sensor operable at high temperature.

収録刊行物

  • 電気学会論文誌. E, センサ・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society  

    電気学会論文誌. E, センサ・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society 118(2), 113-118, 1998-02 

    The Institute of Electrical Engineers of Japan

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各種コード

  • NII論文ID(NAID)
    10004833169
  • NII書誌ID(NCID)
    AN1052634X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13418939
  • NDL 記事登録ID
    4392293
  • NDL 雑誌分類
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL 請求記号
    Z16-B380
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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