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JP2008215964A Oxygen sensor, and nox sensitivity evaluation method of oxygen sensor 有权
标题翻译：氧传感器和氧气传感器的NOX敏感性评估方法
公开(公告)号：JP2008215964A
公开(公告)日：2008-09-18
申请号：JP2007052000
申请日：2007-03-01
申请人： Denso Corp , 株式会社デンソー
发明人： NONOGAKI TAKAHIKO , KOBAYASHI KIYOMI , KIMATA TAKEHITO , SO SHINSHU
IPC分类号： G01N27/41 , G01N27/26 , G01N27/416
CPC分类号： G01N33/0037 , G01N27/4071 , Y02A50/245
摘要： PROBLEM TO BE SOLVED: To provide an oxygen sensor capable of fully detecting a trace amount of NOx gas existing in the downstream of a catalyst converter. SOLUTION: This oxygen sensor is arranged on the downstream of the catalyst converter for purifying exhaust gas in an exhaust system of an internal combustion engine. The oxygen sensor is equipped with a gas sensor element 2, having a solid electrolyte body 21 that has oxygen ion conductivity; an electrode 22 on the side of gas to be measured and a reference gas side electrode, provided respectively on one surface and on the other surface of the solid electrolyte body 21; and a protective layer 23 for covering the electrode 22 on the side of the gas to be measured, permeable by the gas to be measured. The thickness t of the protection layer 23 is 270-500 μm, and the porosity thereof is 3-7%. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供能够完全检测存在于催化剂转化器的下游的微量NOx气体的氧传感器。解决方案：该氧传感器布置在催化转化器的下游，用于净化内燃机的排气系统中的废气。氧传感器配备有具有氧离子传导性的固体电解质体21的气体传感器元件2，分别设置在固体电解质体21的一个表面和另一个表面上的待测气体侧的电极22和参考气体侧电极; 以及保护层23，用于覆盖被测量气体侧的电极22，被被测量气体渗透。保护层23的厚度t为270〜500μm，孔隙率为3-7％。版权所有（C）2008，JPO＆INPIT

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