发明授权
- 专利标题: Fuel injection valve for internal combustion engines
- 专利标题(中): 内燃机燃油喷射阀
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申请号: US10514827申请日: 2003-03-25
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公开(公告)号: US07021567B2公开(公告)日: 2006-04-04
- 发明人: Detlev Potz, deceased
- 申请人: Maike Sander-Potz, legal representative , Wendelin Potz, legal representative , Thomas Kuegler , Andreas Koeninger , Predrag Nunic
- 申请人地址: DE Stuttgart
- 专利权人: Robert Bosch GmbH
- 当前专利权人: Robert Bosch GmbH
- 当前专利权人地址: DE Stuttgart
- 代理商 Ronald E. Greigg
- 优先权: DE10222196 20020518
- 国际申请: PCT/DE03/00973 WO 20030325
- 国际公布: WO03/098028 WO 20031127
- 主分类号: F02M45/00
- IPC分类号: F02M45/00 ; F02M61/06 ; F02M59/00 ; F02M61/00 ; F02M63/00
摘要:
A fuel injection valve for internal combustion engines, having a housing with a bore inside it that contains a longitudinally sliding outer valve needle which in turn contains a longitudinally sliding inner valve needle and the end of each valve needle oriented toward the combustion chamber controls at least one injection opening. The pressure in a control pressure chamber at least indirectly exerts a closing force on the outer valve needle and the pressure in a control pressure chamber at least indirectly exerts a closing force on the inner valve needle. The housing contains a control valve that has a valve chamber and a valve element contained in it, wherein the valve chamber has a connection to the leakage oil chamber a continuously open connection to the control chamber and a connection to the control pressure chamber. The valve element can move between a end position, the valve element closing the connection to the leakage oil chamber and opening the connection to the control pressure chamber and a second end position, closing the connection to the control pressure chamber and opening the connection to the leakage oil chamber.
公开/授权文献
- US20050224598A1 Fuel injection valve for internal combustion engines 公开/授权日:2005-10-13
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