发明授权
- 专利标题: Fuel injector with tubular lower needle guide
- 专利标题(中): 燃油喷射器带管状下针导向器
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申请号: US09328762申请日: 1999-06-09
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公开(公告)号: US06168098A公开(公告)日: 2001-01-02
- 发明人: Benjamin F. Brinn, Jr.
- 申请人: Benjamin F. Brinn, Jr.
- 主分类号: F02M5900
- IPC分类号: F02M5900
摘要:
A solenoid actuated fuel injector comprises a valve body having a longitudinal axis. A valve seat subassembly is mounted in one end of the valve body. The valve seat subassembly includes a valve seat having a seating surface and a circumferential sealing surface surrounding the seating surface. The valve seat subassembly also includes a lower needle guide and swirl disk welded to the valve seat. The lower guide includes a flange portion and a tube portion having an axially disposed tubular bore for guiding the needle in a tight tolerance relationship. The tubular bore provides a longer length interface with the needle and a smoother wear surface than a conventional pierced hole thin lower guide.