发明申请
- 专利标题： NOZZLE AND NEEDLE OF A HIGH-PRESSURE UNIT FUEL INJECTOR
- 专利标题（中）： 高压单元燃油喷射器的喷嘴和针头
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申请号： US13497050申请日： 2010-09-13
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公开(公告)号： US20120181351A1公开(公告)日： 2012-07-19
- 发明人: Shriprasad Gaurishankar Lakhapati , Biao Lu , Dean Alan Oppermann , Russell P. Zukouski
- 申请人： Shriprasad Gaurishankar Lakhapati , Biao Lu , Dean Alan Oppermann , Russell P. Zukouski
- 申请人地址： US IL Lisle
- 专利权人： International Engine Intellectual Property Company
- 当前专利权人： International Engine Intellectual Property Company
- 当前专利权人地址： US IL Lisle
- 国际申请： PCT/US10/48576 WO 20100913
- 主分类号： F02M47/02
- IPC分类号： F02M47/02
摘要：
A unit fuel injector (30) has a nozzle (36) providing axial guidance of a needle (72) at points proximal and distal to a needle feed cavity (81). The needle has a multi-lobular formation (200) providing distal guidance of the needle while allowing fuel from the needle feed cavity to flow past for injection from orifices (86) when the needle is unseated from a seat on a tapering surface (82). Fuel is delivered to the needle feed cavity through a slant passage (85) in the nozzle non-parallel to a longitudinal axis (AX) along which the needle is displaced. The orifices are arranged in a hemispherically contoured surface (83) distal to the seat and centered on a point on the longitudinal axis. The orifices have circular transverse cross sections. The axis of each orifice extends radially of the point on the longitudinal axis at an oblique angle to the longitudinal axis.
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