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:
Aug. 28, 1990
Filed:
Sep. 18, 1989
Applicant:
Inventors:
Yoji Watanabe, Hiroshima, JP;
Hiroyuki Ishibashi, Hiroshima, JP;
Assignee:
Mazda Motor Corp., Hiroshima, JP;
Primary Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
123339 ;
Abstract
In an engine idling speed control system for an internal combustion engine, by feedback controlling increasingly or decreasingly, the amount of intake air fed to the engine with a controlling value variable in accordance with a difference between an actual engine speed and a desired idling speed so as to control the engine to drop speed to the desired idling speed, decreasing variations of the controlling value are restricted to a limit value which is higher when the vehicle is running at a speed higher than a predetermined vehicle creeping speed than when at a running speed lower than the predetermined vehicle creeping speed.