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:
Nov. 21, 2017
Filed:
Feb. 16, 2012
Kenji Kato, Nagoya, JP;
Kouji Shiotani, Kasugai, JP;
Takeshi Kawai, Komaki, JP;
Satoshi Teramoto, Nisshin, JP;
Kenji Kato, Nagoya, JP;
Kouji Shiotani, Kasugai, JP;
Takeshi Kawai, Komaki, JP;
Satoshi Teramoto, Nisshin, JP;
NGK SPARK PLUG CO., LTD., Aichi, JP;
Abstract
An apparatus and method for individually detecting NO and NOconcentrations as NOcomponents of an object gas. An NO concentration corresponding value is obtained from a first detection element not having a reduction section. An NO concentration corresponding value is obtained from a second detection element having a reduction section, and having an NO/NO sensitivity ratio greater than that of the first detection element. The difference ΔC between the NO concentration corresponding values of the two detection elements is obtained, and divided by the difference ΔS between the NO/NO sensitivity ratios of the two detection elements, whereby an NOconcentration corresponding value is obtained. A value obtained by multiplying the NOconcentration corresponding value by the NO/NO sensitivity ratio of the second detection element is subtracted from the NO concentration corresponding value of the second detection element, whereby an NO concentration corresponding value is obtained.