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:
Apr. 09, 2013
Filed:
Mar. 08, 2012
Yasuhiro Ishiguro, Komaki, JP;
Katsunori Yazawa, Kasugai, JP;
Yuji Kimoto, Nagoya, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
In an oxygen sensor control apparatus, after start of fuel cut, the weighted average Ipd of corrected values obtained by multiplying the output value of a mounted oxygen sensor by a correction coefficient Kp is obtained as a representative value Ipe, representing the corrected values in the fuel cut period (S). In the case where the number of times the representative value Ipe is continuously judged not to fall outside a second range (S: NO) and to fall outside a first range (S: YES) reaches 10 (a first number of times) (S: YES), a new correction coefficient Kp is computed (S). In the case where the number of times the representative value Ipe is continuously judged to fall outside the second range (S: YES) reaches 4 (a second number of times smaller than the first number of times) (S: YES), a new correction coefficient Kp is computed (S).