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. 31, 2017
Filed:
Sep. 09, 2014
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi, JP;
Hiroshi Inagaki, Komaki, JP;
NGK SPARK PLUG CO., LTD., Aichi, JP;
Abstract
A gas sensor control device () includes a digital control unit () (CPUin detail) functioning as a digital filter unit (). Even when high-frequency noise components are superimposed on an electrical signal transmitted to a digital control unit () from the electromotive force cell (), the high-frequency noise components are eliminated by the digital filter unit (). Therefore, a terminal voltage Vs across both terminals of the electromotive force cell () generated according to oxygen concentration can be suitably extracted. The digital control unit () can suitably perform feedback control of the pump current Ip based on the terminal voltage Vs generated across both terminals of the electromotive force cell () while suppressing the influence of high-frequency noise components.