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15 条记录 (耗时 0.026 秒)

    Apparatus and method for detecting a short circuit to the battery voltage when driving piezoelectric elements
    11.
    发明授权
    Apparatus and method for detecting a short circuit to the battery voltage when driving piezoelectric elements 有权
    用于在驱动压电元件时检测电池电压短路的装置和方法

    公开(公告)号：US06522049B2

    公开(公告)日：2003-02-18

    申请号：US09824292

    申请日：2001-04-02

    申请人： Johannes-Jörg Rueger

    发明人： Johannes-Jörg Rueger

    IPC分类号： H01L4109

    CPC分类号： F02D41/2096 ,  F02D41/221 ,  F02D41/3809 ,  F02D2041/2093 ,  H02N2/062 ,  H02N2/067

    摘要： The invention describes an apparatus and method for detecting a short circuit to a battery voltage when driving a piezoelectric element, for example, used as an actuator in a fuel injection system of an internal combustion engine. The apparatus and method are characterized in that separate switches are used for selecting a piezoelectric element to be operated and for selecting the operation that is to be performed on the piezoelectric element. A short circuit to battery voltage is detected by first activating the switches to select a piezoelectric element. For a predetermined time interval, the invention monitors for abnormal currents flowing in series with the piezoelectric element. If abnormal currents are detected, an error signal is generated indicating a short circuit to battery voltage. If no abnormal currents are detected during the predetermined time interval, then the switches for selecting a charging or discharging operation are activated to continue with the normal cycling of the piezoelectric elements.

    摘要翻译： 本发明描述了一种用于在驱动压电元件例如用作内燃机的燃料喷射系统中的致动器时检测电池电压短路的装置和方法。 该装置和方法的特征在于，使用单独的开关来选择要被操作的压电元件和用于选择对压电元件执行的操作。 通过首先启动开关来选择压电元件来检测电池电压的短路。 在预定的时间间隔内，本发明监测与压电元件串联流动的异常电流。 如果检测到异常电流，则产生指示电池电压短路的误差信号。 如果在预定时间间隔内没有检测到异常电流，则用于选择充电或放电操作的开关被激活以继续压电元件的正常循环。

    Online optimization of injection systems having piezoelectric elements
    13.
    发明授权
    Online optimization of injection systems having piezoelectric elements 失效
    具有压电元件的注射系统的在线优化

    公开(公告)号：US06691682B2

    公开(公告)日：2004-02-17

    申请号：US09824081

    申请日：2001-04-02

    申请人： Johannes-Jörg Rueger ,  Dirk Samuelsen

    发明人： Johannes-Jörg Rueger ,  Dirk Samuelsen

    IPC分类号： F02M3704

    CPC分类号： F02D41/2096 ,  F02D41/008 ,  F02D41/2438 ,  F02D41/2467

    摘要： Online optimization of injection systems having piezoelectric elements which are used, for example, as actuators in a fuel injection system of an internal combustion engine, wherein the piezoelectric element is activated by an activation voltage having a value set as a function of operating characteristics of the particular piezoelectric element, and based upon, for example, a correction value for injected fuel volume.

    摘要翻译： 具有压电元件的喷射系统的在线优化，所述压电元件例如用作内燃机的燃料喷射系统中的致动器，其中所述压电元件由具有设定为所述内燃机的运行特性的函数的激活电压而被激活 特定的压电元件，并且基于例如喷射燃料量的校正值。

    Time- and event-controlled activation system for charging and discharging piezoelectric elements
    14.
    发明授权
    Time- and event-controlled activation system for charging and discharging piezoelectric elements 失效
    用于充电和放电压电元件的时间和事件控制的激活系统

    公开(公告)号：US07019436B2

    公开(公告)日：2006-03-28

    申请号：US09824167

    申请日：2001-04-02

    申请人： Johannes-Jörg Rueger ,  Alexander Hock

    发明人： Johannes-Jörg Rueger ,  Alexander Hock

    IPC分类号： H01L41/08

    CPC分类号： F02D41/2096 ,  H02N2/067

    摘要： The invention describes an apparatus and a method for charging or discharging a piezoelectric element of a system, e.g., for a fuel injection system. The method and apparatus are characterized in that the current of a system is regulated as a function of a time characteristic and an event characteristic to achieve an effective low absolute average current.

    摘要翻译： 本发明描述了一种用于对例如用于燃料喷射系统的系统的压电元件进行充电或放电的装置和方法。 该方法和装置的特征在于，系统的电流作为时间特性和事件特性的函数被调节以实现有效的低绝对平均电流。