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:
Oct. 21, 2003
Filed:
Mar. 20, 2000
Makoto Yamakado, Tsuchiura, JP;
Kiyoshi Amou, Chiyoda-machi, JP;
Yoshio Okamoto, Minori-machi, JP;
Yuzo Kadomukai, Ishioka, JP;
Hiromasa Kubo, Yokohama, JP;
Kenji Tabuchi, Hitachinaka, JP;
Toshio Takahata, Atsugi, JP;
Yoshiyuki Tanabe, Hitachinaka, JP;
Yasunaga Hamada, Hitachinaka, JP;
Other;
Abstract
An electromagnetic fuel injector is provided with a first coil having a large rate of change in time of magnetomotive force and a second coil having a smaller rate of change in time of magnetomotive force than the first coil. During a valve opening operation at the time of opening the valve, current is passed through at least the first coil, and then current of a smaller current value than in the opening operation is caused to flow so as to hold the valve open, using the first and second coils.