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:
Aug. 26, 2014
Filed:
Jun. 30, 2011
Michinori Tani, Wako, JP;
Kenichi Maeda, Wako, JP;
Atsuhiro Miyauchi, Wako, JP;
Seiji Watanabe, Wako, JP;
Soichiro Goto, Wako, JP;
Michinori Tani, Wako, JP;
Kenichi Maeda, Wako, JP;
Atsuhiro Miyauchi, Wako, JP;
Seiji Watanabe, Wako, JP;
Soichiro Goto, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An air-fuel ratio control apparatus for an internal combustion engine includes an air-fuel ratio sensor having an output characteristic which is nonlinear with respect to the air-fuel ratio of exhaust gas. An output deviation converter is configured to convert an output deviation to a first predetermined value if an output value of the air-fuel ratio sensor is on a richer side of a predetermined target value and to a second predetermined value if the output value is on a leaner side of the target value. A control input calculator is configured to calculate a control input to feedback-control the output value of the air-fuel ratio sensor such that the output deviation converted by the output deviation converter is to be zero. An air-fuel ratio controller is configured to control the air-fuel ratio of exhaust gas using the control input calculated by the control input calculator.