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. 16, 2019
Filed:
Dec. 07, 2016
Ngk Spark Plug Co., Ltd., Nagoya, JP;
Isao Suzuki, Ichinomiya, JP;
Kazunari Kokubo, Komaki, JP;
NGK SPARK PLUG CO., LTD., Nagoya, JP;
Abstract
Particulate measurement processing executed by a sensor control section of a particulate measurement system includes a step of stopping voltage conversion by a first isolation transformer and a second isolation transformer, a step of obtaining correction information B, and a step of correcting ion current A through use of the correction information B. The correction information B reflects improper current generated through particulates, etc. (soot or the like) adhering to a particulate sensor. The ion current A (signal current I) is corrected through use of the correction information B, and the amount of soot S is computed through use of the corrected ion current A'. As a result, it is possible to measure the amount of the soot S (the amount of particulates) while suppressing the influence of the improper current.