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. 17, 1989
Filed:
Apr. 04, 1988
Hideki Tanaka, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
An air/fuel control system for a supercharged automotive engine includes a supercharger for supercharging air to be supplied to the engine, a detecting device for detecting a plurality of parameters representative of an engine operating condition, an air/fuel ratio regulating unit for adjusting the air/fuel mixing ratio to an arbitrarily chosen predetermined value, and a control unit for controlling the air/fuel ratio regulating unit. The control unit is designed to cause the air/fuel ratio regulating unit to adjust the air/fuel mixing ratio to a predetermined value higher than the stoichiometric value when the detecting device indicates that the engine is in a normal operating condition while the supercharger is operated, and also to adjust the air/fuel mixing ratio to a predetermined value lower than the stoichiometric value when the detecting device indicates that the engine is under an operating condition in which a relatively high engine power output is required.