公开(公告)号：EP1373710A1

公开(公告)日：2004-01-02

申请号：EP02727267.3

申请日：2002-03-26

申请人： ROBERT BOSCH GMBH

发明人： MACK, Gerhard ,  NARIN, Taner ,  RAPP, Holger ,  KUNZI, Ulrich ,  HEINECKE, Ralf ,  CHRIST, Wilhelm ,  BOECKING, Friedrich ,  FLEINER, Wolfgang ,  FINK, Manfred

IPC分类号： F02M61/12 ,  F02M47/02

CPC分类号： F02M61/12 ,  F02M47/027

摘要： The invention relates to a fuel-injection valve for internal combustion engines, comprising a valve body (3), in which a bore (7) is configured. A valve seat surface (10) and at least one injection opening (9) are configured at the combustion chamber end of the bore (7), whereby the injection opening (9) connects the bore (7) to the combustion chamber of the internal combustion engine. A nozzle needle (12) is positioned in the bore (7) so that it can be longitudinally displaced, said needle having a sealing surface (17) on the combustion chamber end, which co-operates with the valve seat surface (10) and thus controls the injection opening (9). The nozzle needle (12) has a central longitudinal bore (19), in which an internal needle (14), which is fixed in position in relation to the valve body (3), is located. At least one section of the length of the nozzle needle (12) is guided on the internal needle (14), in such a way that the nozzle needle (12) is retained exactly in the centre of the bore (7) at all times.

摘要翻译： 用于内燃机的燃料喷射阀技术领域本发明涉及一种用于内燃机的燃料喷射阀，其包括阀体（3），其中构造有孔（7）。 一个阀座表面（10）和至少一个喷射孔（9）构造在孔（7）的燃烧室端部，由此喷射孔（9）将孔（7）连接到内部的燃烧室 内燃机。 喷嘴针（12）定位在孔（7）中，使得它可纵向移动，所述针在燃烧室端部上具有与阀座表面（10）配合的密封表面（17），和 从而控制注射开口（9）。 喷嘴针（12）具有中央纵向孔（19），内部针（14）位于该中央纵向孔（19）中，该内部针（14）相对于阀体（3）固定就位。 喷嘴针（12）的长度的至少一部分在内部针（14）上被引导，使得喷嘴针（12）始终精确地保持在孔（7）的中心 。

公开(公告)号：EP1373710B1

公开(公告)日：2006-07-26

申请号：EP02727267.3

申请日：2002-03-26

申请人： ROBERT BOSCH GMBH

发明人： MACK, Gerhard ,  NARIN, Taner ,  RAPP, Holger ,  KUNZI, Ulrich ,  HEINECKE, Ralf ,  CHRIST, Wilhelm ,  BOECKING, Friedrich ,  FLEINER, Wolfgang ,  FINK, Manfred

IPC分类号： F02M61/12 ,  F02M47/02

CPC分类号： F02M61/12 ,  F02M47/027

摘要： The invention relates to a fuel-injection valve for internal combustion engines, comprising a valve body (3), in which a bore (7) is configured. A valve seat surface (10) and at least one injection opening (9) are configured at the combustion chamber end of the bore (7), whereby the injection opening (9) connects the bore (7) to the combustion chamber of the internal combustion engine. A nozzle needle (12) is positioned in the bore (7) so that it can be longitudinally displaced, said needle having a sealing surface (17) on the combustion chamber end, which co-operates with the valve seat surface (10) and thus controls the injection opening (9). The nozzle needle (12) has a central longitudinal bore (19), in which an internal needle (14), which is fixed in position in relation to the valve body (3), is located. At least one section of the length of the nozzle needle (12) is guided on the internal needle (14), in such a way that the nozzle needle (12) is retained exactly in the centre of the bore (7) at all times.