Invention Grant
- Patent Title: High-pressure fuel supply pump provided with electromagnetic intake valve
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Application No.: US16468625Application Date: 2017-11-16
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Publication No.: US11542903B2Publication Date: 2023-01-03
- Inventor: Tatsuo Kawano , Kenichiro Tokuo , Satoshi Usui , Masamichi Yagai , Kazuaki Tokumaru
- Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
- Applicant Address: JP Hitachinaka
- Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
- Current Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
- Current Assignee Address: JP Hitachinaka
- Agency: Foley & Lardner LLP
- Priority: JPJP2016-254654 20161228
- International Application: PCT/JP2017/041203 WO 20171116
- International Announcement: WO2018/123323 WO 20180705
- Main IPC: F02M59/46
- IPC: F02M59/46 ; F02M59/36 ; F02D41/38 ; F02M59/02 ; F02M63/02

Abstract:
An object of the present invention is to prevent generation of wear at a rod collision portion in an electromagnetic intake valve of a high-pressure fuel supply pump by reducing inclinations of the intake valve and a rod.
A structure of the electromagnetic intake valve of the high-pressure fuel supply pump is configured as follows. A seat portion of an intake valve and a guide portion of a rod are configured as an integral part, and further, a rod guide is made to have a sufficiently long length so that it is possible to perform guide at one portion. Further, the intake valve seat portion and a surface where the rod collides with the intake valve are formed on the same plane.
A structure of the electromagnetic intake valve of the high-pressure fuel supply pump is configured as follows. A seat portion of an intake valve and a guide portion of a rod are configured as an integral part, and further, a rod guide is made to have a sufficiently long length so that it is possible to perform guide at one portion. Further, the intake valve seat portion and a surface where the rod collides with the intake valve are formed on the same plane.
Public/Granted literature
- US20200080526A1 HIGH-PRESSURE FUEL SUPPLY PUMP PROVIDED WITH ELECTROMAGNETIC INTAKE VALVE Public/Granted day:2020-03-12
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