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    • 8. 发明授权
    • KRAFTSTOFFEINSPRITZVENTIL FÜR BRENNKRAFTMASCHINEN
    • KRAFTSTOFFEINSPRITZVENTILFÜRBRENNKRAFTMASCHINEN
    • EP1387939B1
    • 2008-01-16
    • EP02726069.4
    • 2002-03-22
    • ROBERT BOSCH GMBH
    • BOEHLAND, PeterKANNE, SebastianNENTWIG, Godehard
    • F02M47/02F02M45/08
    • F02M45/086F02M47/027F02M2200/46
    • The invention relates to a fuel injection valve for internal combustion engines, comprising a housing (1), in which a piston-shaped outer valve needle (10) is arranged in a longitudinally displaceable manner in a bore (3). Said valve needle cooperates with a valve seat (13) configured on the end of the bore (3) located on the combustion chamber side in order to control at least one injection port (7). A control chamber (24) is configured in the housing (1), wherein pressure in the control chamber (24) can be regulated by a valve (33). As a result of the pressure in the control chamber (24), a closing force is exerted at least indirectly upon the outer valve needle (10) in the direction of the valve seat (13). At least one pressure surface (9; 101) is configured in the outer valve needle (10). An inner valve needle (12) is guided in the outer valve needle (10), which controls at least one additional injection port (7) on the valve seat (13) and which is impinged upon by the pressure in the control chamber (24) at least indirectly in the direction of the valve seat (13).
    • 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,其包括壳体(1),活塞形的外部阀针(10)以纵向可移动的方式布置在孔(3)中。 所述阀针与配置在位于燃烧室侧的孔(3)的端部上的阀座(13)协作以控制至少一个喷射口(7)。 控制室(24)构造在壳体(1)中,其中控制室(24)中的压力可以通过阀(33)调节。 由于控制室(24)中的压力,闭合力至少间接地在阀座(13)的方向上被施加到外阀针(10)上。 在外阀针(10)中构造至少一个压力表面(9; 101)。 内阀针(12)在外阀针(10)中被引导,所述外阀针(10)控制阀座(13)上的至少一个附加注射口(7)并且通过控制室(24)中的压力 )至少间接地在阀座(13)的方向上移动。