Method for improving the long-term stability of a piezoelectric actuator and a piezoelectric actuator
    4.
    发明授权
    Method for improving the long-term stability of a piezoelectric actuator and a piezoelectric actuator 有权
    一种用于改善压电致动器和压电致动器的长期稳定性的方法

    公开(公告)号:US07218037B2

    公开(公告)日:2007-05-15

    申请号:US11189334

    申请日:2005-07-26

    IPC分类号: H01L41/053

    CPC分类号: H01L41/0533

    摘要: A method is described for improving the long-term stability of a piezoelectric actuator encased in a potting compound containing or forming hydrogen atoms. Oxygen is contained in the piezoelectric actuator's piezoelectric ceramic. Appropriate means are employed so that unsaturated bonds of the hydrogen in the potting compound will release less oxygen from the piezoelectric ceramic. One means consists in reducing the concentration of hydrogen in the potting compound, with appropriate thermal processes as a result of which the concentration of hydrogen will be reduced to below a predefined threshold being applied after the piezoelectric actuator has been encased in the potting compound. Means that form bonds with the hydrogen in the potting compound or duct oxygen thereto are provided in further embodiments.

    摘要翻译: 描述了一种用于改善封装在含有或形成氢原子的封装化合物中的压电致动器的长期稳定性的方法。 氧气被包含在压电致动器的压电陶瓷中。 使用合适的方法,使得灌封化合物中的氢的不饱和键将从压电陶瓷释放更少的氧。 一种手段在于通过适当的热处理来降低灌封化合物中的氢浓度,由此在将压电致动器封装在灌封化合物中之后,氢的浓度将降低到低于预定阈值。 在另外的实施方案中提供了与灌封化合物中的氢形成键或其导管氧的方式。

    Actuator for Actuating a Fuel Injection Valve
    5.
    发明申请
    Actuator for Actuating a Fuel Injection Valve 有权
    用于启动燃油喷射阀的执行器

    公开(公告)号:US20080149070A1

    公开(公告)日:2008-06-26

    申请号:US11813340

    申请日:2005-11-25

    IPC分类号: F02M51/00

    摘要: An actuator for actuating a fuel injection valve has a piezoactuator, enclosed in an actuator housing unit (14, 16). The housing unit has a cylindrical actuator housing (14) which is elongate in its axial direction (A) and at least partially encased by an extruded plastic coat. The actuator housing unit (14, 16), in its encased area, is provided with a ventilation aperture (20) in which a ventilation element (22) produced from a microporous material is disposed.

    摘要翻译: 用于致动燃料喷射阀的致动器具有封闭在致动器壳体单元(14,16)中的压电致动器。 壳体单元具有圆柱形致动器壳体(14),其在其轴向(A)上是细长的,并且至少部分地被挤出的塑料涂层包裹。 在其封装区域中的致动器壳体单元(14,16)设置有通风孔(20),其中设置由微孔材料制成的通风元件(22)。

    Actuator for actuating a fuel injection valve
    7.
    发明授权
    Actuator for actuating a fuel injection valve 有权
    用于致动燃料喷射阀的致动器

    公开(公告)号:US07906888B2

    公开(公告)日:2011-03-15

    申请号:US11813340

    申请日:2005-11-25

    IPC分类号: H01L41/08

    摘要: An actuator for actuating a fuel injection valve has a piezoactuator, enclosed in an actuator housing unit (14, 16). The housing unit has a cylindrical actuator housing (14) which is elongate in its axial direction (A) and at least partially encased by an extruded plastic coat. The actuator housing unit (14, 16), in its encased area, is provided with a ventilation aperture (20) in which a ventilation element (22) produced from a microporous material is disposed.

    摘要翻译: 用于致动燃料喷射阀的致动器具有封闭在致动器壳体单元(14,16)中的压电致动器。 壳体单元具有圆柱形致动器壳体(14),其在其轴向(A)上是细长的,并且至少部分地被挤出的塑料涂层包裹。 在其封装区域中的致动器壳体单元(14,16)设置有通风孔(20),其中设置由微孔材料制成的通风元件(22)。

    Fuel Injector With a Housing, and Method For Finishing and Labeling the Housing
    8.
    发明申请
    Fuel Injector With a Housing, and Method For Finishing and Labeling the Housing 审中-公开
    具有外壳的燃油喷射器,以及用于完成和标记壳体的方法

    公开(公告)号:US20080197314A1

    公开(公告)日:2008-08-21

    申请号:US11916238

    申请日:2006-05-23

    IPC分类号: F16K27/00

    摘要: A fuel injector has a housing for an actuator (1), especially to a fuel injector with a connector of a contact stud support injection-molded thereto. The injector has a casing (10), disposed across at least part of the periphery of the actuator (1), and an actuator cover (20) placed on the casing (10). The actuator cover (20) is laser-welded to the casing (10) in an overlapping area (30) between the actuator cover (20) and the casing (10). According to a method for finishing the housing of a fuel injector having the aforementioned features, a laser beam used for a laser welding method is incident on the overlapping area (30) in a substantially perpendicular or substantially parallel orientation in relation to the axial direction (A) of the actuator (1) and laser-welds the actuator cover (20) to the casing (10).

    摘要翻译: 燃料喷射器具有用于致动器(1)的壳体,特别是具有注塑到其上的接触柱支撑件的连接器的燃料喷射器。 喷射器具有设置在致动器(1)的周边的至少一部分上的壳体(10)和放置在壳体(10)上的致动器盖(20)。 致动器盖(20)在致动器盖(20)和壳体(10)之间的重叠区域(30)中被激光焊接到壳体(10)。 根据用于完成具有上述特征的燃料喷射器的壳体的方法,用于激光焊接方法的激光束相对于轴向方向以大致垂直或基本上平行的方向入射在重叠区域(30)上 A)并将致动器盖(20)激光焊接到壳体(10)。