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:
Sep. 12, 1995
Filed:
Sep. 14, 1994
Kenichi Sato, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama City, JP;
Abstract
An ignition timing control system for an internal combustion engine which is equipped with an air-fuel ratio feedback control system for controlling an air-fuel ratio to a stoichiometric value. In the ignition timing control system, a basic ignition timing is corrected in accordance with an ignition timing correction amount which is calculated in accordance with a difference between an air-fuel ratio within in a combustion chamber for each engine cylinder and a stoichiometric air-fuel ratio. The air-fuel ratio within the combustion chamber is calculated from an air-fuel ratio feedback control parameter, taking account of a predetermined time lag characteristic of a variation of the air-fuel ratio relative to that of the control parameter.