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. 15, 1986
Filed:
Nov. 14, 1984
Applicant:
Inventors:
Takashi Miyano, Oi, JP;
Shunji Takahashi, Oi, JP;
Assignee:
Mikuni Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
123361 ; 123399 ;
Abstract
A method and device for controlling the air-fuel ratio of an internal combustion engine are disclosed. In this method and device the actuator for controlling the air-flow rate is selected as an actuator capable of causing change with passage of time frequently, and the deviation of air-fuel ratio is detected by an air-fuel sensor from a small air-flow rate point corresponding to, for example, an idling speed of engine and a large air-flow rate point corresponding to a predetermined engine speed during running thereby correcting the parameters a and b.