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:
Dec. 21, 2004
Filed:
Aug. 21, 2003
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A control device of a fuel injection valve is capable of performing a stable fuel injection even if voltage variation takes place in battery, and performing evacuation operation against error in switching element or auxiliary power supply. The control device includes: an auxiliary power supply for stepping up voltage of main power supply ; a first switching element for performing rapid power supply from auxiliary power supply to electromagnetic solenoid ; a second switching element for performing continuous power feed from main power supply to electromagnetic solenoid , and implementing ON/OFF control to perform holding power feed; a third switching element for interrupting current of these power feeds; and a control device for controlling the power feeds. Power feed is normally performed in order of rapid power feed, continuous power feed and hold power feed.