Nixon & Vanderhye P.C.
A/F sensor and method of manufacturing the same
An A/F sensor includes a solid electrolyte body and a heater. The A/F sensor is disposed downstream of a purification device in a flow of exhaust gas g. The purification device purifies the exhaust gas g. The solid electrolyte body is in a cup shape. The solid electrolyte body has an outer surface provided with a measurement electrode 4 contacting the exhaust gas g, and an inner surface provided with a reference electrode contacting reference gas. The solid electrolyte body is made of zirconia. The solid electrolyte body includes a detection part sandwiched between the measurement electrode and the reference electrode and conducted with oxygen ions. The detection part has a cubic phase ratio of 88 mol % or more.
DENSO CORPORATION
G G C F F C
G01N G01N C04B F01N F01N C04B
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Tatsuki Yasufumi
Ujiyama Suzuki