EINSPRITZVORRICHTUNG
    12.
    发明公开

    公开(公告)号:EP2603688A1

    公开(公告)日:2013-06-19

    申请号:EP11733843.4

    申请日:2011-07-18

    申请人: Robert Bosch GmbH

    摘要: The invention relates to an injection device (2, 3) designed in particular for injecting a fluid into the exhaust tract (80) of an internal combustion engine, having a flexible membrane (30) mechanically connected to an armature (32) that can be displaced between at least one intake position and at least one injection position; an elastic element (36) designed and arranged for pressing the armature (32) in the direction of an injection position; and an actuator designed and arranged so that the armature (32) can be displaced from an injection position in the direction of an intake position against the force of the elastic element (36) by activating the actuator.

    摘要翻译: 本发明涉及一种特别设计用于将流体喷射到内燃机的排气管道(80)中的喷射装置(2,3),该喷射装置具有机械地连接到衔铁(32)的柔性膜(30),柔性膜(30)可以是 在至少一个进入位置和至少一个注射位置之间移位; 一个弹性元件(36),该弹性元件(36)被设计和布置成用于沿着注射位置的方向按压所述电枢(32) 以及致动器,所述致动器被设计和布置成使得电枢(32)能够通过致动致动器克服弹性元件(36)的力而从进入位置的方向上的喷射位置移动。

    EINSPRITZVORRICHTUNG ZUM EINBRINGEN EINER HARNSTOFFLÖSUNG IN DEN ABGASSTRANG EINER BRENNKRAFTMASCHINE
    14.
    发明公开
    EINSPRITZVORRICHTUNG ZUM EINBRINGEN EINER HARNSTOFFLÖSUNG IN DEN ABGASSTRANG EINER BRENNKRAFTMASCHINE 有权
    注射装置用于将尿素溶液到排气STRAND内燃机

    公开(公告)号:EP2603680A1

    公开(公告)日:2013-06-19

    申请号:EP11733852.5

    申请日:2011-07-19

    申请人: Robert Bosch GmbH

    IPC分类号: F01N3/20 F02M57/02

    摘要: The invention relates to an injection device (1), designed in particular for injecting fluid into an exhaust tract of an internal combustion engine, having a valve needle (14), an injection chamber (12) having at least one injection opening (44), and a control chamber (20). The injection device (1) is designed such that a pressure differential between the injection chamber (12) and the control chamber (20) brings about a displacement of the valve needle (14) between an open position in which a fluid flow through the injection opening (44) from the injection chamber (12) is released, and a closed position, in which the injection opening (44) is closed off. The injection chamber (22) and the control chamber (20) are hydraulically connected to an inlet (40, 42; 9), such that a pressure rise in the inlet (40, 42; 9) results in a pressure rise in the injection chamber (12), and a pressure rise in the control chamber (20) delayed in time relative to the pressure rise in the injection chamber (12), and said pressure differential brings about a displacement of the valve needle (14) from the closed position into an open position.

    EINSPRITZVORRICHTUNG
    15.
    发明公开
    EINSPRITZVORRICHTUNG 有权
    注塑设备

    公开(公告)号:EP2603679A1

    公开(公告)日:2013-06-19

    申请号:EP11733845.9

    申请日:2011-07-18

    申请人: Robert Bosch GmbH

    IPC分类号: F01N3/20

    摘要: The invention relates to an injection device (2), in particular for injecting fluid into an exhaust tract of an internal combustion engine, having a valve unit which comprises a valve needle (6), an injection chamber (38) having at least one injection opening (8), and a control chamber (36), wherein the injection device (2) is designed so that a pressure differential between the injection chamber (38) and the control chamber (36) brings about a displacement of the valve needle (6) between an open position in which the valve needle (6) releases a fluid flow through the injection opening (8), and a closed position in which the valve needle (6) closes off the injection opening (8). The injection device (2) also has a pump unit integrated in the injection device (2). The pump unit is designed so as to draw in fluid from the fluid inlet (32) during operation and to provide said fluid to the valve unit under increased pressure.