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公开(公告)号：US10378475B2
公开(公告)日：2019-08-13
申请号：US15580504
申请日：2016-04-14
发明人： Frank Denk
摘要： A method for determining a reference current value for actuating a fuel injector, comprising a solenoid drive, for an internal combustion engine of a motor vehicle is described. The method comprises the following: (a) acquiring a multiplicity of current profiles with repeated actuation of the fuel injector, wherein each current profile has a temporal progression of the current strength of a current flowing through the solenoid drive, and wherein each actuation of the fuel injector comprises the following steps: (aa) applying a boost voltage to the solenoid drive of the fuel injector until the current strength of the current flowing through the solenoid drive reaches a first predetermined value, (ab) waiting for the current strength to reach a second predetermined value during a first free-wheeling phase, (ac) applying the boost voltage to the solenoid drive again until the current strength reaches the first predetermined value, and (ad) waiting for the current strength to reach the second predetermined value during a second free-wheeling phase, wherein the first predetermined value is varied for each actuation, the method also comprising (b) determining a multiplicity of magnetic flux profiles, wherein each magnetic flux profile corresponds to one of the multiplicity of acquired current profiles, and (c) selecting the reference current value on the basis of an analysis of the associated current profiles and magnetic flux profiles.
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公开(公告)号：US10024264B2
公开(公告)日：2018-07-17
申请号：US14905908
申请日：2014-06-26
发明人： Frank Denk
CPC分类号： F02D41/2467 , F02D41/20 , F02D2041/2013 , F02D2041/2055 , F02D2041/2058 , F02D2200/063 , F02M35/1294 , H01F7/1844
摘要： A method is provided for determining the point in time of a predetermined open state (e.g., start or stop time of an opening or closing process) of a fuel injector having a coil drive for an internal combustion engine of a motor vehicle. The method includes applying a first voltage pulse to the magnetic coil drive of the fuel injector, detecting a first temporal progression of the current intensity of a current flowing through the coil drive, applying a second voltage pulse to the magnetic coil drive of the fuel injector, detecting a second temporal progression of the current intensity of the current flowing through the coil drive, determining a differential progression based on the first and second temporal progressions of the current intensity, and determining a point in time at which the differential progression exhibits an extremum, which corresponds with the point in time of the predetermined open state.
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公开(公告)号：US10989154B2
公开(公告)日：2021-04-27
申请号：US16098033
申请日：2017-05-03
发明人： Frank Denk , Gerd Rösel
摘要： Various embodiments may include a method for actuating a fuel injector with a solenoid drive and a nozzle needle. The solenoid drive has a solenoid and a movable armature. The fuel injector has an idle stroke between the armature and the nozzle needle. An example method includes: applying a precharging current to the solenoid drive during a precharging phase to move the movable armature into mechanical contact with the nozzle needle; and applying a voltage pulse to the solenoid drive during a boost phase until the current intensity of the current flowing through the solenoid reaches a predetermined peak value.
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公开(公告)号：US10330068B2
公开(公告)日：2019-06-25
申请号：US14384013
申请日：2013-03-27
发明人： Frank Denk , Gerd Roesel
摘要： A method for determining the movement behavior of a fuel injector having a coil drive includes: (a) applying an electrical excitation to a coil of the coil drive, which prompts an opening movement of a valve needle; (b) recording the temporal progression of a first electrical measurement variable of the coil; (c) determining the time when the opening movement ends based on the recorded temporal progression of the first electrical measurement variable; (d) modifying the electrical excitation of the coil such that the valve needle performs a closing movement; (e) recording the temporal progression of a second electrical measurement variable of the coil; and (f) determining the time when the closing movement ends based on the recorded temporal progression of the second electrical measurement variable. One of the two measurement variables is the voltage present at the coil and the other is the intensity of current flowing through the coil.
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5.发明申请公开(公告)号：US20150152830A1
公开(公告)日：2015-06-04
申请号：US14384013
申请日：2013-03-27
发明人： Frank Denk , Gerd Rösel
IPC分类号： F02M65/00
CPC分类号： F02M65/00 , F02D41/04 , F02D41/14 , F02D41/20 , F02D41/2467 , F02D2041/2051 , F02D2041/2055 , F02D2041/2058
摘要： A method for determining the movement behavior of a fuel injector having a coil drive includes: (a) applying an electrical excitation to a coil of the coil drive, which prompts an opening movement of a valve needle; (b) recording the temporal progression of a first electrical measurement variable of the coil; (c) determining the time when the opening movement ends based on the recorded temporal progression of the first electrical measurement variable; (d) modifying the electrical excitation of the coil such that the valve needle performs a closing movement; (e) recording the temporal progression of a second electrical measurement variable of the coil; and (f) determining the time when the closing movement ends based on the recorded temporal progression of the second electrical measurement variable. One of the two measurement variables is the voltage present at the coil and the other is the intensity of current flowing through the coil.
摘要翻译： 一种用于确定具有线圈驱动器的燃料喷射器的运动特性的方法包括：（a）对线圈驱动器的线圈施加电激励，其促使阀针的打开运动; （b）记录线圈的第一电测量变量的时间进展; （c）基于第一电测量变量的记录的时间进度来确定打开运动结束的时间; （d）修改线圈的电激励，使得阀针执行闭合运动; （e）记录线圈的第二电测量变量的时间进展; 和（f）基于第二电测量变量的记录的时间进度确定关闭运动结束的时间。 两个测量变量之一是存在于线圈处的电压，另一个是流过线圈的电流强度。
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公开(公告)号：US09957909B2
公开(公告)日：2018-05-01
申请号：US15309853
申请日：2015-03-25
发明人： Frank Denk
CPC分类号： F02D41/2467 , F02D41/20 , F02D41/247 , F02D41/248 , F02D2041/2013 , F02D2041/2055 , F02D2041/2058
摘要： The present disclosure relates to injection valves. The teachings thereof may be embodied in various valves, fuel injectors, and methods for controlling valves. An example method for setting operational parameters of a fuel injector may include: determining a measurement-specific maximum current value; applying a voltage pulse to the coil drive of the fuel injector; detecting a time curve of the current intensity of a current flowing through the coil drive; ending the voltage pulse when the detected current intensity reaches the maximum current value; and storing the time curve of the detected current intensity. The method may include generating a plurality of differential curves each based on two stored time curves of the detected current intensity for successive measurements; determining a peak current for driving the actuator of the fuel injector based at least in part on the plurality of differential curves; and operating the coil at the determined peak current.
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7.发明申请Determination of The Point in Time of a Predetermined Open State of a Fuel Injector 有权确定燃料喷射器的预定打开状态的时间点公开(公告)号：US20160160784A1
公开(公告)日：2016-06-09
申请号：US14905908
申请日：2014-06-26
发明人： Frank Denk
CPC分类号： F02D41/2467 , F02D41/20 , F02D2041/2013 , F02D2041/2055 , F02D2041/2058 , F02D2200/063 , F02M35/1294 , H01F7/1844
摘要： A method is provided for determining the point in time of a predetermined open state (e.g., start or stop time of an opening or closing process) of a fuel injector having a coil drive for an internal combustion engine of a motor vehicle. The method includes applying a first voltage pulse to the magnetic coil drive of the fuel injector, detecting a first temporal progression of the current intensity of a current flowing through the coil drive, applying a second voltage pulse to the magnetic coil drive of the fuel injector, detecting a second temporal progression of the current intensity of the current flowing through the coil drive, determining a differential progression based on the first and second temporal progressions of the current intensity, and determining a point in time at which the differential progression exhibits an extremum, which corresponds with the point in time of the predetermined open state.
摘要翻译： 提供了一种用于确定具有用于机动车辆的内燃机的线圈驱动器的燃料喷射器的预定打开状态（例如，打开或关闭过程的开始或停止时间）的时间点的方法。 该方法包括：向燃料喷射器的电磁线圈驱动器施加第一电压脉冲，检测流过线圈驱动器的电流的当前强度的第一时间进展，向燃料喷射器的电磁线圈驱动器施加第二电压脉冲 检测流过线圈驱动器的电流的当前强度的第二时间进展，基于当前强度的第一和第二时间进度确定差分进展，以及确定差分进展呈现极值的时间点 ，其对应于预定打开状态的时间点。
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8.发明申请Method and Device for Controlling an Injection Process Comprising a Pre-Injection and a Main Injection 审中-公开用于控制包括预注射和主注射的注射过程的方法和装置公开(公告)号：US20150184626A1
公开(公告)日：2015-07-02
申请号：US14418214
申请日：2013-07-29
发明人： Frank Denk
CPC分类号： F02M51/061 , F02D41/2096 , F02D41/2454 , F02D41/30 , F02D41/3005 , F02D41/402 , F02D2041/2017 , Y02T10/44
摘要： A method for adapting a current profile for a multi-injection process by a fuel injector includes applying to a coil a first excitation profile causing a first multi-injection in which two sub-injection processes are separated such that the fuel injector completely closes in the meantime, determining the closing point of the fuel injector, calculating a minimally possible separation time between the end of the excitation for a first sub-injection process and the beginning of the excitation for a second sub-injection process for a second multi-injection, the fuel injector completely closing between the two sub-injection processes, applying to the coil a second excitation profile leading to the second multi-injection, determining a current intensity rise time during a boost phase of the second sub-injection process, and applying to the coil a third electric excitation profile having a pre-charge phase that pre-magnetizes the coil drive, for each sub-injection process.
摘要翻译： 用于通过燃料喷射器适应多次喷射过程的电流分布的方法包括向线圈施加第一激励分布，其引起第一多次喷射，其中两个分注射过程被分离，使得燃料喷射器在 同时，确定燃料喷射器的关闭点，计算用于第一次喷射过程的激发结束与用于第二多次喷射的第二次喷射过程的激发开始之间的最小可能的分离时间， 所述燃料喷射器在所述两个子喷射过程之间完全关闭，向所述线圈施加导致第二多次喷射的第二激发分布，确定在所述第二次喷射过程的升压阶段期间的电流强度上升时间， 所述线圈具有针对每个次注射过程具有预磁化线圈驱动器的预充电阶段的第三电激励曲线。
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公开(公告)号：US10746126B2
公开(公告)日：2020-08-18
申请号：US15809649
申请日：2017-11-10
发明人： Frank Denk
摘要： A method for actuating a fuel injector having a magnetic coil drive for an internal combustion engine of a motor vehicle is disclosed. The fuel injector has a first terminal and a second terminal, where the first terminal is connectable via a switch element to ground and the second terminal is connected to ground. The method includes the following: actuating the switch element to connect the first terminal to ground, acquiring a time curve of the current strength of a current flowing through the magnetic coil drive, and applying a voltage pulse to the magnetic coil drive to initiate an opening procedure of the fuel injection. A duration of the voltage pulse is established as a function of the acquired time curve of the current strength. Furthermore, an engine controller and a computer program are described.
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公开(公告)号：US20180156153A1
公开(公告)日：2018-06-07
申请号：US15580504
申请日：2016-04-14
发明人： Frank Denk
CPC分类号： F02D41/2467 , F02D41/20 , F02D2041/2003 , F02D2041/2041 , F02D2041/2055 , F02D2041/2058
摘要： A method for determining a reference current value for actuating a fuel injector, comprising a solenoid drive, for an internal combustion engine of a motor vehicle is described. The method comprises the following: (a) acquiring a multiplicity of current profiles with repeated actuation of the fuel injector, wherein each current profile has a temporal progression of the current strength of a current flowing through the solenoid drive, and wherein each actuation of the fuel injector comprises the following steps: (aa) applying a boost voltage to the solenoid drive of the fuel injector until the current strength of the current flowing through the solenoid drive reaches a first predetermined value, (ab) waiting for the current strength to reach a second predetermined value during a first free-wheeling phase, (ac) applying the boost voltage to the solenoid drive again until the current strength reaches the first predetermined value, and (ad) waiting for the current strength to reach the second predetermined value during a second free-wheeling phase, wherein the first predetermined value is varied for each actuation, the method also comprising (b) determining a multiplicity of magnetic flux profiles, wherein each magnetic flux profile corresponds to one of the multiplicity of acquired current profiles, and (c) selecting the reference current value on the basis of an analysis of the associated current profiles and magnetic flux profiles.
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