The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 19, 1988
Filed:
Aug. 18, 1986
Megumu Fukushima, Hiroshima, JP;
Kasunari Komatsu, Hiroshima, JP;
Yasuhiro Shidahara, Hiroshima, JP;
Katihiro Yokomizo, Hiroshima, JP;
Mazda Motor Corporation, , JP;
Abstract
An air-fuel ratio sensor for detecting the air-fuel ratio in intake gas introduced into an engine by way of the oxygen concentration in engine exhaust comprises an oxygen ion transmissive solid electrolyte body and first and second porous electrodes provided on opposite sides of the solid electrolyte body, the first porous electrode being adapted to be brought into contact with the exhaust. The first porous electrode is formed of a material which exhibits semi-catalytic property. Metal oxide which oxidizes HC to produce CO is provided near three-phase points at which said first electrode, the solid electrolyte body and the exhaust adjoin each other when the first electrode is brought into contact with the exhaust.