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. 08, 1986
Filed:
Nov. 02, 1984
Takashi Miyano, Kanagawa, JP;
Takashi Miyano, Kanagawa, JP;
Mikuni Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of controlling air-fuel ratio of an internal combustion engine is disclosed. An oxygen sensor is mounted to the engine to detect oxygen concentration in the exhaust gas from the engine and generate a voltage signal therefrom. The air-fuel is a controlled ratio in accordance with the detected result. The oxygen concentration is sampled in synchronism with the rotational speed of the engine, and sampled results are stored as a correction factor by taking the engine rotational speed into account. The air-fuel ratio is controlled by correction factor previously stored in the preceding sampling time of a given sampling time when a change of the air-fuel ratio is detected by comparing its voltage signal with a reference voltage of the oxygen sensor.