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:
Aug. 22, 2006
Filed:
Jan. 20, 2004
Noriyuki Maekawa, Chiyoda, JP;
Motoyuki Abe, Chiyoda, JP;
Makoto Yamakado, Tsuchiura, JP;
Toru Ishikawa, Kitaibaraki, JP;
Kooji Shibata, Sapporo, JP;
Noriyuki Maekawa, Chiyoda, JP;
Motoyuki Abe, Chiyoda, JP;
Makoto Yamakado, Tsuchiura, JP;
Toru Ishikawa, Kitaibaraki, JP;
Kooji Shibata, Sapporo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
When voltage changes occur in the battery used as a power supply in a fuel injection system, the amount of fuel injection also changes and the required amount of fuel injected cannot be obtained. To eliminate this problem, a fuel injector system is provided which has a fuel injection valve with at least one coil, a power supply, a power supply voltage detector, and a control unit for controlling the fuel injection valve. The control unit sets a reference value of a power supply voltages, and the above-mentioned fuel injection valve is controlled so as to obtain the required ampere-turns by reducing the resultant inductance of the coil when a power supply voltage detection value is less than the above-mentioned reference value, and the resultant inductance of the coil is increased when the power voltage detection value is greater than the reference value.