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    • 7. 发明公开
    • EINSPRITZDÜSE FÜR KRAFTSTOFFE
    • EINSPRITZDÜSEFÜRKRAFTSTOFFE
    • EP3234344A1
    • 2017-10-25
    • EP15785135.3
    • 2015-10-27
    • Robert Bosch GmbH
    • RAU, Andreas
    • F02M61/04F02M47/02F02M61/10F02M61/12F02M61/20
    • F02M61/166F02M47/02F02M47/027F02M61/042F02M61/10F02M61/12F02M61/205F02M2200/26F02M2200/9053F02M2547/001
    • The invention relates to an injection nozzle (1) for fuels, comprising a nozzle body (2), in which a pressure chamber (4) that can be filled with fuel under high pressure is formed, in which pressure chamber a piston-shaped nozzle needle (3) is arranged in such a way that the nozzle needle can be moved longitudinally. A sealing surface (6) is formed at one end of the nozzle needle (3) and an end face (9) is formed at the opposite end, wherein the sealing surface (6) interacts with a nozzle seat (5) in order to open and close at least one injection opening (8). A control chamber (10) that can be filled with fuel under changing pressure is bounded by the end face (9) of the nozzle needle (3) such that a force can be applied to the end face (9) in the direction of the nozzle seat (5) by means of the hydraulic pressure. The nozzle needle (3) has an elastic longitudinal segment (25), which has a longitudinal stiffness of less than 40,000 N/mm.
    • 用于燃料的喷嘴(1)技术领域本发明涉及一种用于燃料的喷嘴(1),其包括喷嘴主体(2),在该喷嘴主体中形成有可以在高压下填充燃料的压力室(4),在该压力室中,活塞形喷嘴 针(3)以这样的方式布置,使得喷嘴针能够纵向移动。 在喷嘴针(3)的一端形成密封表面(6),并且在相对端形成端面(9),其中密封表面(6)与喷嘴座(5)相互作用以便 打开和关闭至少一个注射开口(8)。 可以在变化的压力下填充燃料的控制室(10)由喷嘴针(3)的端面(9)限制,使得可以沿着喷嘴针(3)的方向施加力到端面(9) 喷嘴座(5)借助于液压。 喷嘴针(3)具有弹性纵向段(25),其具有小于40,000N / mm的纵向刚度。