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:
Dec. 22, 2015
Filed:
May. 31, 2013
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi, JP;
Yasuhiro Ishiguro, Komaki, JP;
Yu Akiyama, Kagamigahara, JP;
Tomohisa Terui, Ichinomiya, JP;
Kazuhisa Fujibayashi, Nagoya, JP;
NGK SPARK PLUG CO., LTD., Aichi, JP;
Abstract
A gas sensor control apparatus () for a gas sensor () including an electromotive force cell () and a pump cell () includes current control means () for feedback-controlling the pump current Ip, voltage setting means S, Sfor setting a target voltage Vr to either of first and second target voltage Vrand Vr, and constant group setting means S, Sfor setting a group of feedback control constants to a first group Kpidwhen the target voltage is Vrand to a second group Kpidwhen the target voltage is Vr. The second group Kpidis determined such the pump current Ip becomes stable more quickly as compared with the case where the first group of control constants Kpidcontinues to be used.