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:
Sep. 22, 1998
Filed:
Jul. 29, 1996
Kazuhiro Okazaki, Anjo, JP;
Tomomichi Mizoguchi, Nagoya, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
In an air-fuel ratio control of an engine, an oxygen sensor element is operated with an operating voltage for producing an electric current corresponding to an air-fuel ratio of mixture. The operating voltage is varied in accordance with a range of the air-fuel ratio to be detected, i.e., lean air-fuel ratio, stoichiometric air-fuel ratio or rich air-fuel ratio. The operating voltage may be varied in correspondence to the actual electric current produced from the sensing element or a target value of the air-fuel ratio to which the engine is feedback-controlled.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile