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:
Dec. 02, 2014
Filed:
Sep. 15, 2010
Ryota Onoe, Susono, JP;
Junichi Suzuki, Susono, JP;
Takahiko Fujiwara, Susono, JP;
Makoto Tomimatsu, Susono, JP;
Koichi Kimura, Numazu, JP;
Shuntaro Okazaki, Sunto-gun, JP;
Ryota Onoe, Susono, JP;
Junichi Suzuki, Susono, JP;
Takahiko Fujiwara, Susono, JP;
Makoto Tomimatsu, Susono, JP;
Koichi Kimura, Numazu, JP;
Shuntaro Okazaki, Sunto-gun, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An air-fuel ratio control apparatus of the present invention includes a determination section and a reverse direction correction introducing section. The determination section determines whether or not an output of the downstream air-fuel ratio sensor falls within a predetermined range whose center corresponds to a target value corresponding to the stoichiometric air-fuel ratio. When the output of the downstream air-fuel ratio sensor falls within the predetermined range, the reverse direction correction introducing section temporarily introduces, to an air-fuel ratio correction in a direction requested by the output, an air-fuel ratio correction in a direction opposite to the requested direction.