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. 02, 2014
Filed:
Aug. 16, 2010
Motoyuki Abe, Hitachinaka, JP;
Tohru Ishikawa, Kitaibaraki, JP;
Takuya Mayuzumi, Hitachinaka, JP;
Tetsuo Matsumura, Hitachinaka, JP;
Motoyuki Abe, Hitachinaka, JP;
Tohru Ishikawa, Kitaibaraki, JP;
Takuya Mayuzumi, Hitachinaka, JP;
Tetsuo Matsumura, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
A drive circuit for driving an electromagnetic fuel-injection valve, the drive circuit varying an application sequence of a drive voltage, which is supplied from a step-up power supply to a fuel-injection valve for conducting injection multiple times in a single stroke of an internal-combustion engine, between the first injection and the second and subsequent injections, and setting the application sequence such that the consumption of power from the step-up power supply in the first injection becomes smaller than the power consumption in one of the second and subsequent injections.