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:
Nov. 26, 2002
Filed:
Nov. 29, 2001
Hideki Umemoto, Tokyo, JP;
Tadayuki Saga, Hyogo, JP;
Tatsuji Irie, Tokyo, JP;
Wataru Fukui, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An ignition control system is provided, which includes: an engine speed detector ( ) for calculating an engine speed according to an engine crank angle signal ( ); a current supply start controller ( ) for outputting a proper current supply start timing signal corresponding to the engine speed to an ignition coil ( ); a current supply finish controller ( ) for outputting a proper current supply timing signal corresponding to the engine speed to an ignition coil; an ignition coil controller ( ) for controlling supply of power to the ignition coil ( ) according to the current supply start timing signal and the current supply finish timing signal; and an overspeed determination device ( ) for outputting an overspeed determination signal when determining that the engine speed is in excess of a predetermined limit value. The overspeed determination signal prohibits starting the supply of current, and retards the current supply finish timing to such a degree as to decrease engine torque.