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    Fuel injector having piezoelectric actuator with preload control element and method
    5.
    发明授权
    Fuel injector having piezoelectric actuator with preload control element and method 失效
    具有预压控制元件和方法的压电致动器的燃油喷射器

    公开(公告)号：US07714483B2

    公开(公告)日：2010-05-11

    申请号：US12077640

    申请日：2008-03-20

    申请人： Amy M. Hess ,  Daniel R. Ibrahim ,  Stephen R. Lewis ,  Jayaraman Venkataraghavan ,  Shriprasad Lakhapati

    发明人： Amy M. Hess ,  Daniel R. Ibrahim ,  Stephen R. Lewis ,  Jayaraman Venkataraghavan ,  Shriprasad Lakhapati

    IPC分类号： H01L41/053 ,  H01L41/083

    CPC分类号： H01L41/0536 ,  F02M47/027 ,  F02M51/0603 ,  F02M61/167 ,  H01L41/083

    摘要： A fuel injector includes a piezoelectric actuator subassembly having a casing and a piezoelectric element disposed within the casing. The piezoelectric element has an operating temperature range and includes a thermally contractive material having a negative thermal expansion coefficient over a second temperature range overlapping with the operating temperature range. A preload control element is coupled with the piezoelectric element and includes a thermally expansive material having a positive thermal expansion coefficient over the second temperature range. The preload control element maintains a constant preload on the piezoelectric element over a wide temperature range to inhibit temperature induced variability in operation, and can axially lengthen in opposition to axial shortening of the piezoelectric element, responsive to a temperature increase.

    摘要翻译： 燃料喷射器包括具有壳体和设置在壳体内的压电元件的压电致动器子组件。 压电元件具有工作温度范围，并且包括在与工作温度范围重叠的第二温度范围内具有负热膨胀系数的热收缩材料。 预压控制元件与压电元件耦合，并且包括在第二温度范围内具有正热膨胀系数的热膨胀材料。 预压控制元件在宽的温度范围内在压电元件上保持恒定的预载荷，以防止温度引起的操作变化，并且可以响应于温度升高而轴向地延长与压电元件的轴向缩短相反。

    Fuel injector having piezoelectric actuator with preload control element and method
    6.
    发明申请
    Fuel injector having piezoelectric actuator with preload control element and method 失效
    具有预压控制元件和方法的压电致动器的燃油喷射器

    公开(公告)号：US20090236441A1

    公开(公告)日：2009-09-24

    申请号：US12077640

    申请日：2008-03-20

    申请人： Amy M. Hess ,  Daniel R. Ibrahim ,  Stephen R. Lewis ,  Jayaraman Venkataraghavan ,  Shriprasad Lakhapati

    发明人： Amy M. Hess ,  Daniel R. Ibrahim ,  Stephen R. Lewis ,  Jayaraman Venkataraghavan ,  Shriprasad Lakhapati

    IPC分类号： B05B1/02

    CPC分类号： H01L41/0536 ,  F02M47/027 ,  F02M51/0603 ,  F02M61/167 ,  H01L41/083

    摘要： A fuel injector includes a piezoelectric actuator subassembly having a casing and a piezoelectric element disposed within the casing. The piezoelectric element has an operating temperature range and includes a thermally contractive material having a negative thermal expansion coefficient over a second temperature range overlapping with the operating temperature range. A preload control element is coupled with the piezoelectric element and includes a thermally expansive material having a positive thermal expansion coefficient over the second temperature range. The preload control element maintains a constant preload on the piezoelectric element over a wide temperature range to inhibit temperature induced variability in operation, and can axially lengthen in opposition to axial shortening of the piezoelectric element, responsive to a temperature increase.

    摘要翻译： 燃料喷射器包括具有壳体和设置在壳体内的压电元件的压电致动器子组件。 压电元件具有工作温度范围，并且包括在与工作温度范围重叠的第二温度范围内具有负热膨胀系数的热收缩材料。 预压控制元件与压电元件耦合，并且包括在第二温度范围内具有正热膨胀系数的热膨胀材料。 预压控制元件在宽的温度范围内在压电元件上保持恒定的预载荷，以防止温度引起的操作变化，并且可以响应于温度升高而轴向地延长与压电元件的轴向缩短相反。

    Fuel injector having reduced armature cavity pressure
    7.
    发明授权
    Fuel injector having reduced armature cavity pressure 有权
    燃油喷射器具有降低的电枢腔压力

    公开(公告)号：US08910882B2

    公开(公告)日：2014-12-16

    申请号：US13167528

    申请日：2011-06-23

    申请人： Bryan D. Moore ,  Daniel R. Ibrahim ,  Sana Mahmood ,  Adam Duresky ,  Christopher D. Hanson

    发明人： Bryan D. Moore ,  Daniel R. Ibrahim ,  Sana Mahmood ,  Adam Duresky ,  Christopher D. Hanson

    IPC分类号： F02D1/06

    CPC分类号： F02M47/027 ,  F02M53/043 ,  F02M63/0017 ,  F02M63/0071 ,  F02M63/0075 ,  F02M2200/28 ,  F02M2547/008

    摘要： A fuel injector for an engine is disclosed. The fuel injector may have a fuel nozzle with at least one injection orifice, and a needle element movable within the fuel nozzle between a first position at which the needle element inhibits fuel flow and a second position at which fuel flow is substantially uninhibited. The fuel injector may also have a control chamber located at a base end of the needle element, a body, and a control valve disposed within the body and movable to selectively drain the control chamber, thereby causing the needle element to move between the first and second positions. The fuel injector may further have an armature disposed within an armature cavity of the body and selectively energized to move the control valve, and a pressure reducer disposed within the body and configured to reduce a pressure of the armature cavity.

    摘要翻译： 公开了一种用于发动机的燃油喷射器。 燃料喷射器可以具有带有至少一个喷射孔的燃料喷嘴，以及可在燃料喷嘴内可移动的针元件，该第一位置在针元件抑制燃料流动的第一位置和燃料流基本上不被禁止的第二位置之间。 燃料喷射器还可以具有位于针元件的基端的控制室，主体和设置在主体内的控制阀，并且可移动以便选择性地排出控制室，从而使针元件在第一和第 第二职位 燃料喷射器还可以具有设置在主体的电枢腔内的电枢并选择性地通电以移动控制阀，以及设置在主体内并被构造成减小电枢腔的压力的减压器。

    FUEL INJECTOR HAVING REDUCED ARMATURE CAVITY PRESSURE
    8.
    发明申请
    FUEL INJECTOR HAVING REDUCED ARMATURE CAVITY PRESSURE 有权
    燃油喷射器具有降低的压力空气压力

    公开(公告)号：US20120325926A1

    公开(公告)日：2012-12-27

    申请号：US13167528

    申请日：2011-06-23

    申请人： Bryan D. MOORE ,  Daniel R. Ibrahim ,  Sana Mahmood ,  Adam Duresky ,  Christopher D. Hanson

    发明人： Bryan D. MOORE ,  Daniel R. Ibrahim ,  Sana Mahmood ,  Adam Duresky ,  Christopher D. Hanson

    IPC分类号： F02D1/00

    CPC分类号： F02M47/027 ,  F02M53/043 ,  F02M63/0017 ,  F02M63/0071 ,  F02M63/0075 ,  F02M2200/28 ,  F02M2547/008

    摘要： A fuel injector for an engine is disclosed. The fuel injector may have a fuel nozzle with at least one injection orifice, and a needle element movable within the fuel nozzle between a first position at which the needle element inhibits fuel flow and a second position at which fuel flow is substantially uninhibited. The fuel injector may also have a control chamber located at a base end of the needle element, a body, and a control valve disposed within the body and movable to selectively drain the control chamber, thereby causing the needle element to move between the first and second positions. The fuel injector may further have an armature disposed within an armature cavity of the body and selectively energized to move the control valve, and a pressure reducer disposed within the body and configured to reduce a pressure of the armature cavity.

    摘要翻译： 公开了一种用于发动机的燃油喷射器。 燃料喷射器可以具有带有至少一个喷射孔的燃料喷嘴，以及可在燃料喷嘴内可移动的针元件，该第一位置在针元件抑制燃料流动的第一位置和燃料流基本上不被禁止的第二位置之间。 燃料喷射器还可以具有位于针元件的基端的控制室，主体和设置在主体内的控制阀，并且可移动以便选择性地排出控制室，从而使针元件在第一和第 第二职位 燃料喷射器还可以具有设置在主体的电枢腔内的电枢并选择性地通电以移动控制阀，以及设置在主体内并被构造成减小电枢腔的压力的减压器。

    System and method for internal cooling of a fuel injector
    9.
    发明授权
    System and method for internal cooling of a fuel injector 有权
    燃料喷射器内部冷却的系统和方法

    公开(公告)号：US08517284B2

    公开(公告)日：2013-08-27

    申请号：US12465458

    申请日：2009-05-13

    申请人： Daniel R. Ibrahim ,  Stephen R. Lewis ,  Avinash R. Manubolu

    发明人： Daniel R. Ibrahim ,  Stephen R. Lewis ,  Avinash R. Manubolu

    IPC分类号： B05B1/24 ,  B05B15/00 ,  B05B9/00 ,  B05B1/30

    CPC分类号： F02M53/043 ,  F02M47/027

    摘要： A fuel injector includes an injector body forming an actuator portion. An actuator bore is formed in the actuator portion and is at least partially defined by an inner surface and by an end surface. An actuator disposed in the actuator bore and has an outer surface such that a flow channel can be defined between the inner surface of the actuator bore and the outer surface of the actuator. A cooling flow passage is formed in the injector body, in fluid communication with the actuator bore, and is adapted to supply cooling fluid to the actuator bore. A drain passage is formed in the injector body, in fluid communication with the actuator bore. An internal cooling fluid flow path extends from the cooling flow passage, through the flow channel, and from the flow channel through the drain passage.

    摘要翻译： 燃料喷射器包括形成致动器部分的喷射器主体。 致动器孔形成在致动器部分中，并且至少部分地由内表面和端表面限定。 致动器设置在致动器孔中并且具有外表面，使得可以在致动器孔的内表面和致动器的外表面之间限定流动通道。 冷却流道形成在喷射器主体中，与致动器孔流体连通，并且适于向致动器孔提供冷却流体。 排出通道形成在喷射器主体中，与致动器孔流体连通。 内部冷却流体流动路径从冷却流道延伸通过流动通道，并且从流动通道通过排放通道延伸。

    Engine and control valve assembly having reduced variability in operation over time
    10.
    发明申请
    Engine and control valve assembly having reduced variability in operation over time 审中-公开
    发动机和控制阀组件随着时间的推移具有降低的操作变异性

    公开(公告)号：US20090165749A1

    公开(公告)日：2009-07-02

    申请号：US12005541

    申请日：2007-12-27

    申请人： Daniel R. Ibrahim ,  Stephen R. Lewis ,  Dianqi Fang

    发明人： Daniel R. Ibrahim ,  Stephen R. Lewis ,  Dianqi Fang

    IPC分类号： F16K31/02 ,  F02M61/18 ,  F02M51/00

    CPC分类号： F02M47/027 ,  F02M63/0015 ,  F02M63/004 ,  F02M63/0045 ,  F02M2200/8053 ,  Y10T137/0318

    摘要： A control valve assembly includes a one-piece valve movable between a first position at which the valve closes a seat defined by a housing and positioned fluidly between a fluid inlet and a first fluid outlet, and a second position at which the valve is out of contact with the seat. The valve includes an outer diameter having an annular seating shoulder located thereon which is configured to contact a frustoconical surface of the seat when the valve is at the first position, and the annular seating shoulder is further configured to deform in response to contacting the frustonical surface without changing a seating diameter associated therewith. Closing the seat with the annular seating shoulder reduces performance variability of the valve over time.

    摘要翻译： 控制阀组件包括可在第一位置和第二位置之间移动的单件阀，阀的第一位置在阀的第一位置和第二位置之间，第二位置在阀的第一位置处阀闭合由壳体限定的阀座，并且流体地定位在流体入口与第一流体出口之间， 与座位接触。 该阀包括外径，该外径具有位于其上的环形座肩，当该阀位于第一位置时，该外径构造成接触该座椅的截头圆锥形表面，并且该环形座肩进一步构造成响应于截锥形表面 而不改变与其相关联的座径。 用环形座肩关闭座椅会降低阀门的性能变化。