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    • 8. 发明申请
    • ガスセンサ及びガス検知方法
    • 气体传感器和气体检测方法
    • WO2005015191A1
    • 2005-02-17
    • PCT/JP2003/010210
    • 2003-08-11
    • 株式会社日立製作所金枝 雅人飯塚 秀宏吉井 泰雄吉田 紀子東山 和寿上川 将行
    • 金枝 雅人飯塚 秀宏吉井 泰雄吉田 紀子東山 和寿上川 将行
    • G01N27/16
    • G01N33/0014G01N27/16Y02A50/248
    • A combustible gas detecting sensor which has a catalyst capable of burning a combustible gas when contacted with the gas and a device for measuring the temperature of the catalyst, and an apparatus for removing a combustible gas not to be detected, wherein a gas not to be detected is removed by the apparatus and then a gas containing only a combustible gas to be detected is passed through the above catalyst and is burned by the contact with the catalyst, and at least one of the amount and the concentration of said combustible gas to be detected is determined from the temperature change of the catalyst; and a gas sensor for NOx or SOx, wherein when an air/fuel ratio of an exhaust gas is lean, NOx or SOx in the exhaust gas is captured within a catalyst, and subsequently an exhaust gas to be contacted with the catalyst is switched to that having a rich or stoichiometric air/fuel ratio and the heat generated by the reduction of the NOx or SOx having been captured above is measured, to thereby determine the content of NOx or SOx in the above lean exhaust gas.
    • 一种可燃气体检测传感器,其具有在与气体接触时能够燃烧可燃气体的催化剂和用于测量催化剂温度的装置,以及用于除去不被检测的可燃气体的装置, 检测到的物质被装置除去,然后仅含有待检测的可燃性气体的气体通过上述催化剂,并通过与催化剂的接触燃烧,并且所述可燃气体的量和浓度中的至少一种为 根据催化剂的温度变化确定检测值; 以及用于NOx或SO x的气体传感器,其中当废气的空气/燃料比为贫时,排气中的NOx或SO x被捕获在催化剂内,随后将与催化剂接触的废气切换到 测量具有丰富或化学计量的空气/燃料比以及通过上述捕获的NOx或SO x的还原产生的热量,从而确定上述稀薄排气中的NOx或SO x的含量。