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:
Jun. 06, 1995
Filed:
Feb. 25, 1993
Kazuhide Togai, Takatsuki, JP;
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An ignition timing control system and method for multicylinder internal combustion engine, utilizing a variable valve operating system such as variable valve timing system and a partial cylinder operating system. An engine control unit calculates a standard ignition timing for each cylinder according to the valve operating condition, rotational speed of the engine and intake air pressure. The control unit also calculates a target ignition timing by compensating the standard ignition timing according to an operating condition of the vehicle and controls an ignition driver to operate an ignitor associated with each cylinder at the target ignition timing.