发明授权
- 专利标题: High-pressure fluid control solenoid valve assembly with coaxially arranged two valves
- 专利标题(中): 高压流体控制电磁阀组件同轴布置两个阀门
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申请号: US846074申请日: 1986-03-31
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公开(公告)号: US4753212A公开(公告)日: 1988-06-28
- 发明人: Masahiko Miyaki , Noritaka Ibuki , Takio Tani , Atsusi Taguchi , Kazuo Shinoda , Hiroshi Koide , Fumiaki Kobayashi
- 申请人: Masahiko Miyaki , Noritaka Ibuki , Takio Tani , Atsusi Taguchi , Kazuo Shinoda , Hiroshi Koide , Fumiaki Kobayashi
- 申请人地址: JPX Kariya JPX Toyota
- 专利权人: Nippondenso Co., Ltd.,Toyota Jidosha Kabushiki Kaisha
- 当前专利权人: Nippondenso Co., Ltd.,Toyota Jidosha Kabushiki Kaisha
- 当前专利权人地址: JPX Kariya JPX Toyota
- 优先权: JPX60-68847 19850401
- 主分类号: F02D1/02
- IPC分类号: F02D1/02 ; F02D1/08 ; F02M51/06 ; F02M59/36 ; F02M59/46 ; F02M39/00
摘要:
A high-pressure fluid control solenoid valve assembly for use with a spill type fuel injection pump of an internal combustion engine, comprises an actuator portion (101) including a solenoid (8, 9), a stator (7) and an armature (14), and a valve portion (102) including a pilot valve (40, 41) and a main valve (42, 43) where the valve portion (102) is spaced apart from the actuator portion (101) and is responsive to the movement of the armature (14) via a rod (14) connected to the armature (14) and extends axially in a bore of the stator (7) which is cylindrical hollow. The pilot valve (40, 41) is coaxial with and telescopically received in the main valve (42, 43) so that two fluid chambers (54, 51) are formed inside and outside, respectively a spool (42) of the main valve such that the main valve is continuously kept closed irrespective of the fluid pressure in these chambers as long as the pilot valve is closed. The pilot valve comprises a needle (40) which is arranged to be pressed by the rod (13) to close the pilot valve on energization of the solenoid (8, 9), where the needle (40) is normally biased in valve-opening direction. On deenergization, the pilot valve opens causing the main valve to spill fuel thus terminating the fuel injection.
公开/授权文献
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