Actuator Arrangement for use in a Fuel Injector
    3.
    发明公开
    Actuator Arrangement for use in a Fuel Injector 有权
    Aktuatoranordnung zur Verwendung mit einem Kraftstoffinjektor

    公开(公告)号:EP2372139A1

    公开(公告)日:2011-10-05

    申请号:EP10157760.9

    申请日:2010-03-25

    CPC classification number: F02M51/0603 F02M61/168 F02M63/0026

    Abstract: The present invention relates an actuator arrangement for use in a fuel injector, comprising: a piezoelectric actuator having a body section, said body section having a first end piece and a second end piece; a sleeve which enshrouds at least part of the body section of the actuator; and at least one constrictive member, disposed externally with respect to the sleeve wherein the constrictive member applies a constrictive force to the sleeve to maintain a seal between the sleeve and the underlying body section of the actuator. The underlying body section comprises an alternation of smooth sections and rough sections; said rough sections comprising superficial markings.

    Abstract translation: 本发明涉及一种用于燃料喷射器的致动器装置,包括:具有主体部分的压电致动器,所述主体部分具有第一端部件和第二端部件; 套筒,其包围致动器的主体部分的至少一部分; 以及至少一个缩颈构件,其相对于所述套筒设置在外部,其中所述缩颈构件向所述套筒施加约束力以保持所述套筒和所述致动器的下面的身体部分之间的密封。 下面的主体部分包括平滑部分和粗糙部分的交替; 所述粗糙部分包括表面标记。

    Method of Encapsulating an Actuator having a Piezoelectric Actuator Stack
    5.
    发明公开
    Method of Encapsulating an Actuator having a Piezoelectric Actuator Stack 有权
    Verfahren zur Verkapselung eines Aktuators mit einem piezoelektrischen Aktuatorstapel

    公开(公告)号:EP2343746A1

    公开(公告)日:2011-07-13

    申请号:EP10150453.8

    申请日:2010-01-11

    CPC classification number: H01L41/0533 F02M51/0603 H01L41/083 H01L41/23

    Abstract: The invention concerns an encapsulated actuator as well as a method of encapsulating an actuator/stack in an encapsulation member, which comprising at least an innermost heat shrinkable, polymeric sleeve member and an overlaying outermost, heat shrinkable, polymeric sleeve member. The sleeve members have each a different shrinkage temperature, wherein the shrinkage temperature of the outermost sleeve member is higher than the shrinkage temperature of the innermost sleeve member. The method comprising essentially the following steps:
    a. Arranging the stack inside the innermost sleeve member,
    b. Arranging the outermost sleeve member so as to overlay the innermost sleeve member(s),
    c. Placing the stack under vacuum so as to degas it,
    d. Heating the stack above the shrinkage temperature of the outermost sleeve member so as to shrink the outermost sleeve member,
    e. Placing the stack under atmospheric pressure
    f. Cooling the stack.

    Abstract translation: 本发明涉及封装的致动器以及将致动器/堆叠封装在密封构件中的方法,其包括至少最内部的可热收缩的聚合物套筒构件和覆盖最外的可热收缩的聚合物套筒构件。 套筒构件具有不同的收缩温度,其中最外层套筒构件的收缩温度高于最内套筒构件的收缩温度。 该方法基本上包括以下步骤:a。 将堆叠排列在最内套筒构件内,b。 排列最外侧的套筒构件以覆盖最内侧的套筒构件,c。 将叠层放置在真空下以脱气,d。 将堆叠加热到最外层套筒构件的收缩温度以上以收缩最外层的套筒构件, 将堆叠置于大气压下f。 冷却堆叠。

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