Piezoelectric actuator for a servo drive, servo drive with a piezoelectric actuator and method of producing a piezoelectric actuator
    2.
    发明授权
    Piezoelectric actuator for a servo drive, servo drive with a piezoelectric actuator and method of producing a piezoelectric actuator 失效
    用于伺服驱动器的压电致动器,具有压电致动器的伺服驱动器以及产生压电致动器的方法

    公开(公告)号:US06274967B1

    公开(公告)日:2001-08-14

    申请号:US09296227

    申请日:1999-04-22

    IPC分类号: H01L4108

    摘要: A servo drive includes a piezoelectric actuator contained in a drive housing. The actuator has an actuator stack surrounded by a hollow cylindrical spring element and an actuator casing disposed in the spring element. The spring element is clamped, together with the actuator stack, between an actuator cap and an actuator base. An elastic compound fills gaps between the drive housing and the spring element as well as between the spring element and the actuator casing, and damps an actuator motion. A piezoelectric actuator for the servo drive and a method of producing the piezoelectric actuator are also provided.

    摘要翻译: 伺服驱动器包括驱动器壳体内的压电致动器。 致动器具有由中空圆柱形弹簧元件围绕的致动器堆叠和设置在弹簧元件中的致动器壳体。 弹簧元件与致动器堆叠一起夹在致动器盖和致动器基座之间。 弹性组合物填充驱动壳体和弹簧元件之间以及弹簧元件和致动器壳体之间的间隙,并且阻止致动器运动。 还提供了用于伺服驱动器的压电致动器和制造压电致动器的方法。

    Method for producing a tubular spring and an actuator unit comprising one such tubular spring
    3.
    发明授权
    Method for producing a tubular spring and an actuator unit comprising one such tubular spring 有权
    用于制造管状弹簧的方法和包括一个这种管状弹簧的致动器单元

    公开(公告)号:US07222424B2

    公开(公告)日:2007-05-29

    申请号:US10821775

    申请日:2004-04-09

    IPC分类号: B23P15/16 B21D51/16

    摘要: A method for producing a tubular spring (12) in the form of a cylindrical hollow body, especially for pre-tensioning a piezoelectric actuator element (2) of an actuator unit (1) of a fuel injector comprises the step of providing a thin-walled, solid-drawn steel tube with a plurality of regularly arranged longish recesses (14) by means of laser cutting. Thus, an actuator unit (1) comprises a piezoelectric actuator element (2) which is arranged in a thin-walled cylindrical hollow body, wherein the hollow body being elastically embodied and pre-tensioning the actuator element (2). Furthermore, the hollow body is a solid-drawn steel tube which is provided with a plurality of longish recesses (14).

    摘要翻译: 用于制造圆柱形中空体形式的管状弹簧(12)的方法,特别是用于预紧燃料喷射器的致动器单元(1)的压电致动器元件(2)的方法,包括: 通过激光切割具有多个规则排列的较深的凹槽(14)的带壁的固体拉伸钢管。 因此,致动器单元(1)包括布置在薄壁圆柱形空心体中的压电致动器元件(2),其中中空体弹性地实施并且预张紧致动元件(2)。 此外,中空体是设置有多个较长凹部(14)的固体拉伸钢管。

    Piezoelectric assembly
    4.
    发明授权
    Piezoelectric assembly 有权
    压电组件

    公开(公告)号:US06998761B1

    公开(公告)日:2006-02-14

    申请号:US09639962

    申请日:2000-08-16

    IPC分类号: H01L41/053

    摘要: A piezoelectric assembly, a method for producing a structural unit with a prestressed piezoelectric actuator and a method for producing a hollow body for prestressing the piezoelectric actuator include an actuator pushed into a spring sleeve and force-lockingly and/or form-lockingly connected under prestress to two ends of the spring sleeve. This provides a structural unit in which the prestressing force of the piezoelectric actuator is permanently fixed by the production process.

    摘要翻译: 压电组件,用于制造具有预应力的压电致动器的结构单元的方法和用于制造用于预应力压电致动器的空心体的方法包括:致动器被推入弹簧套筒中并在预应力下被强制锁定和/或形成锁定连接 到弹簧套筒的两端。 这提供了一种结构单元,其中通过生产过程永久地固定压电致动器的预应力。

    Method for producing a piezoelectric structural unit
    5.
    发明授权
    Method for producing a piezoelectric structural unit 有权
    压电结构单元的制造方法

    公开(公告)号:US06681462B1

    公开(公告)日:2004-01-27

    申请号:US09499853

    申请日:2000-02-07

    IPC分类号: H04R1700

    摘要: A method for producing a structural unit with a prestressed piezoelectric actuator includes the steps of inserting a front end of the actuator into a hollow body, form-lockingly or force-lockingly connecting the inserted front end of the actuator to the hollow body, pressing the actuator into the hollow body with a defined force establishing a prestress of the actuator, and force-lockingly or form-lockingly connecting the actuator to the hollow body in the vicinity of a rear end of the actuator, for fixing the prestress of the actuator.

    摘要翻译: 用于制造具有预应力的压电致动器的结构单元的方法包括以下步骤:将致动器的前端插入中空体中,将致动器的插入的前端与中空体成形锁定或强制锁定连接, 致动器以确定的力确定致动器的预应力的力,并且致动器在致动器的后端附近强制锁定或形成锁定地连接到中空本体,用于固定致动器的预应力。

    Fuel injector
    8.
    发明授权
    Fuel injector 有权
    喷油器

    公开(公告)号:US06719221B2

    公开(公告)日:2004-04-13

    申请号:US10093907

    申请日:2002-03-08

    IPC分类号: F02M5900

    摘要: The fuel injector has a housing that is formed from at least one nozzle tension nut, a first injector module and a second injector module. The first injector module and the second injector module adjoin one another and are disposed in the nozzle tension nut. A fuel high-pressure bore is led through the first injector module and the second injector module. A fuel return bore is disposed in the housing. Contact surfaces between the injector modules form a first gap that adjoins the high-pressure bore. Contact surfaces between the nozzle tension nut and the injector modules form a second gap that is connected to the first gap. The return line adjoins the second gap for the discharge of fuel that has entered the second gap from the high-pressure bore via the first gap. The fuel injector is such that the second gap is sealed off relative to the surroundings of the fuel injector.

    摘要翻译: 燃料喷射器具有由至少一个喷嘴张紧螺母,第一喷射器模块和第二喷射器模块形成的壳体。 第一注射器模块和第二注射器模块彼此相邻并且设置在喷嘴张紧螺母中。 燃料高压孔被引导通过第一注射器模块和第二注射器模块。 燃料回流孔设置在壳体中。 喷射器模块之间的接触表面形成邻接高压孔的第一间隙。 喷嘴张紧螺母和喷射器模块之间的接触表面形成连接到第一间隙的第二间隙。 返回管线邻接第二间隙,用于经由第一间隙从高压孔进入第二间隙的燃料排放。 燃料喷射器使得第二间隙相对于燃料喷射器的周围被密封。

    Fuel injection valve for an internal combustion engine
    10.
    发明授权
    Fuel injection valve for an internal combustion engine 有权
    内燃机燃油喷射阀

    公开(公告)号:US06546914B1

    公开(公告)日:2003-04-15

    申请号:US09555406

    申请日:2000-11-27

    IPC分类号: F02M3704

    摘要: The nozzle body (5) of a fuel injection valve has a central bore (54) in which a nozzle needle (1) is guided. The tip (52) of the nozzle body (5) has a tapered valve seat (55) which forms together with the sealing edge (27) of the nozzle needle (1) a valve (27, 55) which controls the flow of fuel to the injection holes (9) in the nozzle tip (52). Underneath the sealing edge (27) a circumferential groove (33) is disposed in the truncatoconical needle tip (30, 35, 40, 45) at the level of which the injection holes (9) are disposed, so that when the valve (27, 55) opens the nozzle needle (1) is axially stabilized and the shaping of the injected jet is improved.

    摘要翻译: 燃料喷射阀的喷嘴体(5)具有引导喷嘴针(1)的中心孔(54)。 喷嘴体(5)的尖端(52)具有锥形阀座(55),其与喷嘴针(1)的密封边缘(27)一起形成控制燃料流动的阀门(27,55) 到喷嘴尖端(52)中的喷射孔(9)。 在密封边缘(27)的下方,周向凹槽(33)设置在其中设置注射孔(9)的水平处的锥形针尖(30,35,40,45)中,使得当阀(27) ,55)打开喷嘴针(1)轴向稳定,并且注射射流的成形改善。