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. 23, 1991
Filed:
Jul. 09, 1990
Hiroshi Takamatsu, Hiroshima, JP;
Hiromasa Ishino, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A fuel control system for an internal combustion engine of an automotive vehicle controls an air-fuel ratio using feedback so as to determine a proper air-fuel ratio by constantly monitoring the exhaust to verify the accuracy of an air-fuel mixture setting. The fuel control system halts the feedback fuel control and forcibly causes an increase of fuel so as to enrich an air-fuel mixture setting when an engine operating condition shifts into a specific zone of engine load in which the engine operates at high loads. The forced increase of fuel is delayed for a predetermined time period when the engine operates at speeds within a specific speed zone in the specific load zone, the time period being changed so as to be longer or shorter according to engine speeds in the specific speed zone.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile