Invention Grant
- Patent Title: Electromagnetic fuel injection valve
- Patent Title (中): 电磁燃油喷射阀
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Application No.: US12489069Application Date: 2009-06-22
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Publication No.: US08662472B2Publication Date: 2014-03-04
- Inventor: Katsuyuki Suzuki , Gen Kato , Junichi Miyashita , Kenichi Tsunota
- Applicant: Katsuyuki Suzuki , Gen Kato , Junichi Miyashita , Kenichi Tsunota
- Applicant Address: JP Tokyo
- Assignee: Keihin Corporation
- Current Assignee: Keihin Corporation
- Current Assignee Address: JP Tokyo
- Agency: Arent Fox LLP
- Priority: JP2008-177057 20080707
- Main IPC: F16K31/02
- IPC: F16K31/02

Abstract:
In an electromagnetic fuel injection valve, a valve housing includes: a cylinder-shaped valve seat member having a valve seat in its front end portion; a magnetic cylindrical body coaxially connected to a rear end portion of the valve seat member; a nonmagnetic cylindrical body coaxially and liquid-tightly welded to a rear end of the magnetic cylindrical body; and a hollow cylindrical stationary core coaxially and liquid-tightly welded to a rear end of the nonmagnetic cylindrical body. A valve assembly is housed in the valve housing and includes: a valve body capable of being seated on the valve seat; and a movable core connected to a rear end of the valve body and opposed to a front end of the stationary core. The valve body and the valve seat member are respectively made of different martensitic stainless steels so that a hardness of the valve body is higher than that of the valve seat member. Accordingly, it is possible to provide an electromagnetic fuel injection valve for alcohol fuel which is capable of preventing the adhesive wear from occurring in the seat portion while a valve body and a valve seat member made of martensitic stainless steel are used.
Public/Granted literature
- US20100001215A1 ELECTROMAGNETIC FUEL INJECTION VALVE Public/Granted day:2010-01-07
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