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1. (WO2017034037) A/F SENSOR AND METHOD OF MANUFACTURING SAME

Pub. No.:    WO/2017/034037    International Application No.:    PCT/JP2016/075136
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Tue Aug 30 01:59:59 CEST 2016
IPC: G01N 27/41
G01N 27/409
Applicants: DENSO CORPORATION
株式会社デンソー
Inventors: UJIYAMA, Tatsuki
宇治山 竜己
SUZUKI, Yasufumi
鈴木 康文
Title: A/F SENSOR AND METHOD OF MANUFACTURING SAME
Abstract:
An A/F sensor 1 is provided with a solid electrolyte body 2 and a heater 6. The A/F sensor 1 is provided downstream, in exhaust gas g, of a purifying device 10 which purifies the exhaust gas g. The solid electrolyte body 2 is formed in the shape of a cup. A measuring electrode 4 which comes into contact with the exhaust gas g is formed on the outer surface 21 of the solid electrolyte body 2, and a reference electrode which comes into contact with a reference gas is formed on the inner surface 22 of the solid electrolyte body 2. The solid electrolyte body 2 is formed from zirconia. The solid electrolyte body 2 is provided with a detecting portion 20 which is sandwiched between the measuring electrode 4 and the reference electrode 5, and through which oxygen ions are conducted. The detecting portion 20 has a cubic phase proportion of at least 88 mol%.