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:
Oct. 21, 1986
Filed:
Feb. 07, 1985
Hideo Kobayashi, Kawagoe, JP;
Eiji Kishida, Tokyo, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An air-fuel ratio control system for an internal combustion engine having an oxygen concentration sensor disposed in the exhaust system of the engine is provided with means for detecting a high load operation of the engine and an air-fuel ratio control signal is produced by comparing an output signal of the oxygen sensor with a first reference level corresponding to a stoichiometric value of the air-fuel ratio when the engine is operating under medium or low load condition and with a second reference level corresponding to an air-fuel ratio which is on the leaner side of the stoichiometric value when the engine is operating under the high load condition.