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:
Sep. 28, 2010
Filed:
Oct. 11, 2007
Yoshinori Inoue, Aichi, JP;
Hiroshi Inagaki, Aichi, JP;
Norikazu Ieda, Aichi, JP;
Keigo Banno, Aichi, JP;
Yoshinori Inoue, Aichi, JP;
Hiroshi Inagaki, Aichi, JP;
Norikazu Ieda, Aichi, JP;
Keigo Banno, Aichi, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
A gas sensor apparatusin an air-fuel ratio detection systemincludes a gas sensor elementwhich outputs a detection signal corresponding to air-fuel ratio, and a gas sensor control circuitwhich includes a detection sectionfor outputting a first output signal VIP, a second output signal VIP, and a third output signal VIPin accordance with the detection signal. This detection sectionoutputs the first output signal VIPwhich changes in accordance with the air-fuel ratio at least within a wide first air-fuel ratio zone, the second output signal VIPwhich changes in accordance with the air-fuel ratio within a narrow zone in the vicinity of the stoichiometric ratio, and the third output signal VIPwhich changes in accordance with the air-fuel ratio within a narrow zone in the lean region.