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    ACTUATOR UNIT FOR AN INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE
    21.
    发明申请
    ACTUATOR UNIT FOR AN INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE 有权
    内燃机喷油系统的执行器单元

    公开(公告)号：US20100194244A1

    公开(公告)日：2010-08-05

    申请号：US12669071

    申请日：2008-07-15

    申请人： Jürgen Dick ,  Hellmut Freudenberg ,  Richard Pirkl

    发明人： Jürgen Dick ,  Hellmut Freudenberg ,  Richard Pirkl

    IPC分类号： H01L41/053 ,  H04R17/00

    CPC分类号： F02M61/167 ,  F02M51/0603 ,  H01L41/053 ,  Y10T29/42

    摘要： In an actuator unit for an injection system of an internal combustion engine, the difference in the longitudinal extension when a change of temperature of the piezoelectric actuator element occurs affecting the actuator unit is equalized compared to the actuator housing due to different thermal expansion coefficient values in that a fastening element is arranged on the actuator housing. The fastening element is made of a different material than the actuator housing and thus affects a force acting counter to the change of length of the actuator housing.

    摘要翻译： 在用于内燃机的喷射系统的致动器单元中，当压缩致动器元件的温度变化影响致动器单元时，纵向延伸的差异与致动器壳体相比由于不同的热膨胀系数值 紧固元件布置在致动器壳体上。 紧固元件由与致动器壳体不同的材料制成，并因此影响与致动器壳体的长度变化相反的力。

    Method and Device for Controlling a Valve
    26.
    发明申请
    Method and Device for Controlling a Valve 有权
    用于控制阀门的方法和装置

    公开(公告)号：US20080000439A1

    公开(公告)日：2008-01-03

    申请号：US11570016

    申请日：2005-05-27

    申请人： Reiner Lederle ,  Richard Pirkl ,  Hans-Jorg Wiehoff

    发明人： Reiner Lederle ,  Richard Pirkl ,  Hans-Jorg Wiehoff

    IPC分类号： F01L1/46

    CPC分类号： F02D41/2096

    摘要： An piezo actuator loading signal is determined and generated according to an output value and a pilot control value which depends on at least one operational parameter. The loading signal causes that a valve member moves into a valve seat. A first value characteristic of the electric power fed to the actuator when the valve member hits the valve seat is determined while a second value characteristic of the energy delivered to the actuator is determined when the loading process of the actuator has been completed. A real value characteristic of a sealing force with which the valve member is pressed onto the valve seat is determined according to the first and second value. The real value and a predefined setpoint value are fed to the controller which accordingly adjusts a pilot control value assignment instruction which is used for determining the pilot control value if a predefined condition is met.

    摘要翻译： 根据输出值和取决于至少一个操作参数的导频控制值来确定和产生压电致动器加载信号。 加载信号导致阀构件移动到阀座中。 当阀构件撞击阀座时供给到致动器的电力的第一值特征被确定，同时在致动器的装载过程完成时确定输送到致动器的能量的第二值特性。 根据第一和第二值确定阀构件被压到阀座上的密封力的实际值特性。 实际值和预定义的设定值被馈送到控制器，其相应地调整用于在满足预定条件时确定导频控制值的导频控制值分配指令。

    Method and apparatus for controlling a capacitive actuator
    28.
    发明授权
    Method and apparatus for controlling a capacitive actuator 有权
    用于控制电容式致动器的方法和装置

    公开(公告)号：US06472796B1

    公开(公告)日：2002-10-29

    申请号：US09513623

    申请日：2000-02-25

    申请人： Christian Hoffmann ,  Hellmut Freudenberg ,  Hartmut Gerken ,  Martin Hecker ,  Richard Pirkl

    发明人： Christian Hoffmann ,  Hellmut Freudenberg ,  Hartmut Gerken ,  Martin Hecker ,  Richard Pirkl

    IPC分类号： H01L4108

    CPC分类号： F02D41/2096 ,  F02D41/221 ,  H02N2/06 ,  H02N2/067

    摘要： A method for controlling a capacitive actuator includes the steps of determining an energy applied to an actuator, measuring an actuator voltage present at the actuator, and inferring a functional state of the actuator by using the energy and the actuator voltage. A capacitive actuator is fed energy and the actuator voltage present at the actuator is measured. The energy and the comparison of the actuator voltage with reference values are used to infer a functional state, for example, either faults or correct function of the actuator or injection valve. Furthermore, the actuator voltage is used to infer an actuator stroke. The method is based on actuator characteristics. The invention also includes a circuit for controlling a capacitive actuator having a driving circuit with a main switch, a charging capacitor, a first series circuit including an oscillating coil, an auxiliary switch, and a second series circuit having a discharging switch, a charging switch, and a diode to be connected to the actuator, and a control device having a program and a family of characteristics with actuator characteristics defining characteristic curves, reference values, and correction factors.

    摘要翻译： 用于控制电容式致动器的方法包括以下步骤：确定施加到致动器的能量，测量致动器处存在的致动器电压，以及通过使用能量和致动器电压来推断致动器的功能状态。 电容式致动器被馈送能量，并且测量致动器处存在的致动器电压。 使用致动器电压和参考值的能量和比较来推断功能状态，例如故障或致动器或喷射阀的正确功能。 此外，致动器电压用于推断致动器行程。 该方法基于执行器特性。 本发明还包括用于控制具有主开关的驱动电路的电容式致动器的电路，充电电容器，包括振荡线圈的第一串联电路，辅助开关和具有放电开关的第二串联电路，充电开关 以及要连接到致动器的二极管，以及具有程序和特征族的控制装置，具有定义特性曲线，参考值和校正因子的致动器特性。

    Method and configuration for diagnosis of a capacitive actuator
    30.
    发明授权
    Method and configuration for diagnosis of a capacitive actuator 失效
    诊断电容式执行器的方法和配置

    公开(公告)号：US06366868B2

    公开(公告)日：2002-04-02

    申请号：US09821968

    申请日：2001-03-30

    申请人： Hellmut Freudenberg ,  Hartmut Gerken ,  Martin Hecker ,  Christian Hoffmann ,  Richard Pirkl ,  Walter Schrod

    发明人： Hellmut Freudenberg ,  Hartmut Gerken ,  Martin Hecker ,  Christian Hoffmann ,  Richard Pirkl ,  Walter Schrod

    IPC分类号： H01L4104

    CPC分类号： F02M65/00 ,  F02D41/2096 ,  F02D41/221 ,  F02D2041/2051 ,  F02D2041/2058 ,  F02D2041/2089 ,  F02D2041/2093 ,  F02M2200/21 ,  G01R31/2829 ,  H02N2/06 ,  Y10T307/747 ,  Y10T307/826

    摘要： A method of diagnosing an actuator includes supplying a predeterminable amount of energy to an actuator through a charge-reversal circuit. Faulty functional statuses of the actuator and its supply lines and/or its drive circuits, short- or long-term interruptions, short-circuits within the actuator or its supply lines, or excessively low capacitance values may be deduced from a discrepancy between reference values and determined variables including actuator voltage, actuator current, and actuator charge. A short-circuit of an electrical connection within the actuator or an electrical connection between the drive circuit and the actuator can be deduced if the actuator voltage is less than a lower voltage value. An interruption in the electrical connection within is the actuator or an electrical connection between the drive circuit and the actuator may be deduced if an actuator peak current is less than a lower current value. An apparatus for performing the method is also provided.

    摘要翻译： 诊断致动器的方法包括通过电荷反转电路向致动器提供预定量的能量。 执行机构及其供电线路和/或其驱动电路的功能状态不良，执行器或其供电线路中的短期或长期中断，短路或过低的电容值可能会从参考值 并确定变量，包括执行器电压，执行器电流和执行器充电。 如果执行器电压小于较低的电压值，则可以推导出致动器内的电气连接的短路或驱动电路与致动器之间的电气连接。 如果致动器峰值电流小于较低的电流值，那么内部电气连接的中断是致动器，或者可以推导出驱动电路和致动器之间的电气连接。 还提供了一种用于执行该方法的装置。