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:
Jul. 21, 2015
Filed:
Oct. 06, 2010
Katsunori Yazawa, Komaki, JP;
Yuji Kimoto, Komaki, JP;
Katsunori Yazawa, Komaki, JP;
Yuji Kimoto, Komaki, JP;
NGK SPARK PLUG CO., LTD., Aichi, JP;
Abstract
A sensor control device including an anomaly diagnosis section. When at least one of a first NOconcentration IpW based on the output OPof a first differential amplification circuit () and a second NOconcentration IpN based on the output OPof a second differential amplification circuit () falls within an anomaly diagnosis range ZN, the difference D between IpW and IpN is obtained, and the difference D is stored in a difference accumulation buffer BF such that 16 values of the difference D continuously sampled up to the present are stored. The integrated value (difference integral value) Dint of the difference D is obtained. When the difference integrated value Dint becomes equal to or greater than a predetermined value Di, the sensor control device indicates a diagnosis result of 'anomalous.'