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. 26, 2011
Filed:
Jul. 31, 2008
Tomoyuki Takagawa, Buckinghamshire, GB;
Tomoyuki Takagawa, Buckinghamshire, GB;
Denso Corporation, Kariya, JP;
Abstract
In a system where an air-fuel ratio feedback correction amount is learned when its variation width is within a stable determination value, the stable determination value is set at larger value when a deviation amount of the correction amount becomes larger. When the air-fuel ratio feedback correction amount is rapidly changed after the learning is completed, the stable determination value is increased to moderate the learning condition and accelerate the learning speed (update speed of the learning value). Hence, the air-fuel ratio feedback correction amount is immediately learned. Furthermore, when a behavior of the air-fuel ratio feedback correction amount is stable, the stable determination value is made small to avoid an erroneous learning of the air-fuel ratio feedback correction amount.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile