Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1998-09-09
2000-11-28
Warden, Sr., Robert J.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204426, 205787, G01N 27407, G01N 27419
Patent
active
061530727
ABSTRACT:
A gas sensor 1 including a first processing space 9; a first gas passage 11; a second processing space 10; a second gas passage 13; an oxygen concentration detection element 4; a first oxygen pumping element 3 adapted to reduce the oxygen concentration of exhaust gas introduced into the first processing space 9 within a range such that a water vapor contained in the measurement gas is not substantially decomposed; an oxygen catalyst section 16; and a combustible gas component concentration information generation/output section 5. Also disclosed is a gas sensor system including the above gas sensor and first oxygen pumping operation control means for adjusting the oxygen concentration of the measurement gas introduced into the first processing space within a range such that water vapor contained in the measuring gas is not substantially decomposed.
REFERENCES:
patent: 4722779 (1988-02-01), Yamada et al.
patent: 5763763 (1998-06-01), Kato et al.
patent: 5879525 (1999-03-01), Kato
David M. Haaland, Noncatalytic Electrodes for Solid-Electrolyte Oxygen Sensors, J. Electrochemical Soc., pp. 796-804, Apr. 1980.
Fuma Tomohiro
Inoue Ryuji
Kato Kenji
Kitanoya Shoji
Oshima Takafumi
NGK Spark Plug Co. Ltd.
Olsen Kaj K.
Warden, Sr. Robert J.
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