Invention Grant
- Patent Title: Fuel injection valve
- Patent Title (中): 燃油喷射阀
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Application No.: US12438668Application Date: 2006-09-25
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Publication No.: US08230839B2Publication Date: 2012-07-31
- Inventor: Masahiko Hayatani , Motoyuki Abe , Toru Ishikawa , Eiichi Kubota , Takehiko Kowatari
- Applicant: Masahiko Hayatani , Motoyuki Abe , Toru Ishikawa , Eiichi Kubota , Takehiko Kowatari
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Crowell & Moring LLP
- International Application: PCT/JP2006/319623 WO 20060925
- International Announcement: WO2008/038396 WO 20080403
- Main IPC: F02M51/00
- IPC: F02M51/00

Abstract:
In a fuel injection valve used for an internal combustion engine, a valve closing lag time due to fluid resistance in a fuel path is shortened to decrease a minimum injection limit. More specifically, in the fuel injection valve in which an anchor is attracted to an end face part of a stationary core having a fuel path formed at a center part thereof by means of electromagnetic force, and in which a fuel injection hole is opened and closed by controlling a valve disc driven in conjunction with the anchor, there are provided a fuel reservoir part at a center part of an upper end face part of the anchor, a through hole extending axially in a fashion that an end part thereof is open to the fuel reservoir part, and a fuel path extending radially outward from the fuel reservoir part so that fuel is fed to a magnetic attraction gap between an upper end face part of the anchor and a lower end face part of the stationary core. Further, an opening part of a through hole that is open to an upper end face part of the anchor is at least partially opposed to a fuel introduction bore formed in the stationary core, and on the opening part of the through hole, a fuel introduction part is provided for capturing fuel running radially outward from a center side part of the anchor and for guiding the fuel thus captured to the through hole.
Public/Granted literature
- US20100065021A1 Fuel Injection Valve Public/Granted day:2010-03-18
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