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. 31, 1991
Filed:
Sep. 07, 1990
Applicant:
Inventor:
Hiroya Ohkumo, Musashino, JP;
Assignee:
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123339 ;
Abstract
A feedback control system has a comparing section to compare idling engine speed with a wide dead zone and a narrow dead zone. The wide dead zone has a predetermined width with respect to a desired idle speed. The narrow dead zone width is narrower than the wide dead zone width. When the idling speed is out of the wide dead zone, the system selects the narrow dead zone for rapid convergence of the idling speed. When the idling speed is within the narrow dead zone, the system selects the wide dead zone to prevent hunting.
Ohkumo, Hiroya. (1991). Idle speed control system for an engine (U.S. Patent No. 5076230). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5076230
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