发明授权
- 专利标题： Pressure relief valve and high pressure pump with such valve
- 专利标题（中）： 减压阀和带这种阀的高压泵
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申请号： US13161744申请日： 2011-06-16
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公开(公告)号： US08701631B2公开(公告)日： 2014-04-22
- 发明人: Shinobu Oikawa , Yoshinori Yamashita , Katsunori Furuta , Masayuki Kobayashi , Shigeto Tsuge
- 申请人： Shinobu Oikawa , Yoshinori Yamashita , Katsunori Furuta , Masayuki Kobayashi , Shigeto Tsuge
- 申请人地址： JP Kariya
- 专利权人： Denso Corporation
- 当前专利权人： Denso Corporation
- 当前专利权人地址： JP Kariya
- 代理机构： Nixon & Vanderhye PC
- 优先权： JP2010-147695 20100629; JP2011-16967 20110128
- 主分类号： F02M69/54
- IPC分类号： F02M69/54 ; F16K15/00 ; F02D41/38 ; F16K15/02
摘要：
A valve member of a pressure relief valve has a shaft portion, a pressure receiving portion, and a guide portion, wherein the valve member is axially movable in a fuel return passage. When a forward end of the shaft portion is seated on a valve seta, the fuel return passage is closed, while the shaft portion is separated from the valve seat the fuel return passage is opened. A notched portion is formed at an outer wall of the guide portion to thereby form an outer-surface passage. A fuel inlet port is formed in the valve member for communicating a fuel inlet chamber to the fuel return passage at a downstream side of the valve member.
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