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公开(公告)号：US08368288B2
公开(公告)日：2013-02-05
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： H01L41/083
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。
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公开(公告)号：USRE38470E1
公开(公告)日：2004-03-23
申请号：US09845862
申请日：2001-04-30
IPC分类号： H01L4104
CPC分类号： H01L41/042 , F02D41/2096 , H02N2/06 , H02N2/067
摘要： In a driving operation, a capacitive actuator is charged from a series circuit of two capacitors having a charging voltage. An actuator voltage established at the actuator is controlled to a prescribed desired value in a course of a subsequent driving operation; the same procedure occurs for further actuators.
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公开(公告)号：US06333585B1
公开(公告)日：2001-12-25
申请号：US09555019
申请日：2000-08-15
IPC分类号： H01L4108
CPC分类号： H02N2/067 , F02D41/2096
摘要： A capacitive actuator (P), especially for a piezoelectrically operated injection valve for an internal combustion engine, is short-circuited by a discharge switch (M) after an actuation, the controlling input of the discharge switch (M) being connected to the actuator (P) so that the discharge switch (M) in case of a failure of the external control, is automatically rendered conductive by the actuator voltage (UP) and the actuator (P) is therefore automatically discharged.
摘要翻译： 特别是用于内燃机的压电操作的喷射阀的电容式致动器（P）在致动之后被放电开关（M）短路，放电开关（M）的控制输入端连接到致动器 （P），使得在外部控制失败的情况下的放电开关（M）由致动器电压（UP）自动导通，并且致动器（P）因此被自动放电。
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公开(公告)号：US6137208A
公开(公告)日：2000-10-24
申请号：US250875
申请日：1999-02-16
CPC分类号： F02D41/2096 , H02N2/06 , H02N2/067 , F02D2041/2003
摘要： A device and a method for driving at least one capacitive actuator, in particular a piezoelectrically operated fuel injection valve of an internal combustion engine, by a microprocessor-controlled control circuit. The device has a charging capacitor which can be recharged by an energy source, which charges the at least one actuator via switches controlled by the control circuit, and into which the actuator is discharged again.
摘要翻译： 一种用于通过微处理器控制的控制电路驱动至少一个电容式致动器，特别是内燃机的压电操作的燃料喷射阀的装置和方法。 该装置具有充电电容器，该充电电容器可以由能量源进行充电，能量源通过由控制电路控制的开关对至少一个致动器充电，再次将致动器放电到该电容器中。
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公开(公告)号：US5986360A
公开(公告)日：1999-11-16
申请号：US133764
申请日：1998-08-12
CPC分类号： F02D41/2096 , H02N2/06 , H02N2/067 , F02D2041/2003 , F02M2200/21 , Y10T307/826 , Y10T307/858
摘要： One or more capacitive actuators are controlled by a device that charges the actuators via a capacitor and from a switched mode power supply SMPS that operates according to the flyback converter principle. The secondary coil of the switched mode power supply functions as the charging coil and the discharging coil, i.e., it simultaneously undertakes the function of the large, heavy charging coil. This saves space and weight.
摘要翻译： 一个或多个电容性致动器由通过电容器和根据反激转换器原理操作的开关模式电源SMPS对致动器充电的装置来控制。 开关型电源的次级线圈用作充电线圈和放电线圈，即同时承担大型重型充电线圈的功能。 这样可以节省空间和重量。
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