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    Procedure and device for diagnosing the dynamic of an exhaust gas sensor
    5.
    发明授权
    Procedure and device for diagnosing the dynamic of an exhaust gas sensor 失效
    用于诊断废气传感器动态的程序和装置

    公开(公告)号：US08186205B2

    公开(公告)日：2012-05-29

    申请号：US12421370

    申请日：2009-04-09

    申请人： Kersten Wehmeier ,  Ronaldi Rusli ,  Andreas Koring ,  Richard Hotzel

    发明人： Kersten Wehmeier ,  Ronaldi Rusli ,  Andreas Koring ,  Richard Hotzel

    IPC分类号： G01M15/10

    CPC分类号： F02D41/1495 ,  F01N11/007 ,  F01N2560/025 ,  F01N2560/14 ,  F02D41/008 ,  F02D41/1441 ,  F02D41/1454 ,  F02D2041/1432 ,  Y02T10/47

    摘要： The invention concerns a procedure and a device for diagnosing the dynamic of an exhaust gas sensor, which is arranged in an exhaust gas duct of a combustion engine and with which a parameter of the gas mixture that is supplied to the combustion engine is regulated by a control loop. It is thereby provided according to the invention that during a diagnosing period a temporal deflection of a regulation correcting variable for the parameter that is derived from an output signal of the exhaust gas sensor or a temporal course of the output signal of the exhaust gas sensor is used for the diagnosis and that the dynamic of the exhaust gas sensor is assumed in an evaluation algorithm. Thereby an improvement of the on-board diagnosis of the dynamic of the exhaust gas sensor can be achieved and in particular lambda probes, which provide a slowing down of their responding behavior, can be detected early on.

    摘要翻译： 本发明涉及一种用于诊断排气传感器的动态的程序和装置，该排气传感器布置在内燃机的排气管道中，并且通过该排气气体传感器的供给到内燃机的气体混合物的参数由 控制回路。 由此，根据本发明，在诊断期间，对于从排气传感器的输出信号导出的参数的调节校正变量的时间偏差或排气传感器的输出信号的时间过程， 用于诊断，并且在评估算法中假定废气传感器的动态。 因此，可以实现对排气传感器的动态的车载诊断的改进，并且可以在早期检测特别是提供其响应行为减慢的λ探针。

    METHOD AND DEVICE FOR THE DYNAMIC MONITORING OF A LAMBDA PROBE
    6.
    发明申请
    METHOD AND DEVICE FOR THE DYNAMIC MONITORING OF A LAMBDA PROBE 有权
    LAMBDA探针动态监测的方法和装置

    公开(公告)号：US20110314892A1

    公开(公告)日：2011-12-29

    申请号：US13170808

    申请日：2011-06-28

    申请人： Kersten Wehmeier ,  Michael Pfeil ,  Siyun Chu ,  Albrecht Clement

    发明人： Kersten Wehmeier ,  Michael Pfeil ,  Siyun Chu ,  Albrecht Clement

    IPC分类号： G01N33/00

    CPC分类号： F02D41/1495 ,  F01N2560/025 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1474

    摘要： A method for the dynamic monitoring of a first lambda probe arranged in an exhaust-gas duct of an internal combustion engine upstream of an exhaust-gas purification system. A period of an output signal of the first lambda probe is determined in a controller of the internal combustion engine, and a lambda regulating signal is determined from an output signal of a second lambda probe connected downstream of the exhaust-gas purification system. A first threshold value for a lengthening of the period of the output signal of the first lambda probe is predefined, in that a characteristic signal (46) is derived from the lambda regulating signal, in that a second threshold value for an inadmissible deviation of the characteristic signal (46) is predefined, and in that an inadmissible asymmetric delay of the first lambda probe is inferred if the lengthening of the period exceeds the first threshold value and the characteristic signal (46) deviates from the second threshold value outside predetermined limits.

    摘要翻译： 一种用于动态监测布置在废气净化系统上游的内燃机的排气管道中的第一λ探针的方法。 在内燃机的控制器中确定第一λ探针的输出信号的周期，并且根据连接在排气净化系统下游的第二λ探针的输出信号来确定λ调节信号。 用于延长第一λ探测器的输出信号的周期的第一阈值是预定义的，因为从λ调节信号导出特征信号（46），因为第二阈值对于不允许的 特征信号（46）是预定义的，并且如果周期的延长超过第一阈值并且特征信号（46）偏离第二阈值超出预定极限，则推断第一λ探针的不允许的不对称延迟。

    METHOD AND DEVICE FOR REGULATING THE FUEL/AIR RATIO OF A COMBUSTION PROCESS
    7.
    发明申请
    METHOD AND DEVICE FOR REGULATING THE FUEL/AIR RATIO OF A COMBUSTION PROCESS 有权
    用于调节燃烧过程的燃料/空气比的方法和装置

    公开(公告)号：US20100212291A1

    公开(公告)日：2010-08-26

    申请号：US12647717

    申请日：2009-12-28

    申请人： Eberhard SCHNAIBEL ,  Kersten Wehmeier ,  Klaus Hirschmann ,  Richard Hotzel

    发明人： Eberhard SCHNAIBEL ,  Kersten Wehmeier ,  Klaus Hirschmann ,  Richard Hotzel

    IPC分类号： F02D41/00 ,  F01N9/00

    CPC分类号： F02D41/0295 ,  F01N13/009 ,  F01N13/0097 ,  F01N2430/06 ,  F01N2570/16 ,  F02D41/1441 ,  F02D41/1454 ,  F02D2041/1418 ,  F02D2041/1422 ,  F02D2250/36

    摘要： A method for regulating the fuel/air ratio of a combustion process which is operated alternatingly with excess air and air deficiency, and having at least one catalyst volume in the exhaust gas of the combustion process which stores oxygen when there is excess oxygen in the exhaust gas and gives it off when there is oxygen deficiency, in which method the oxygen charges into the catalyst volume taking place when there is excess air, and the oxygen discharges from the catalyst volume taking place when there is air deficiency determined, and in which the fuel/air ratio is regulated in a first control loop such that the sum of the oxygen charges and oxygen discharges determined in a predefined interval takes on a predetermined value, wherein the combustion process is operated using oxygen excess or oxygen deficiency, respectively, at least until these appear at an oxygen-sensitive Nernst probe downstream from the catalyst volume.

    摘要翻译： 一种用于调节燃烧过程的燃料/空气比的方法，所述燃烧过程与过量的空气和空气不足交替地操作，并且在排气中存在过多的氧气时存储氧气的燃烧过程的废气中具有至少一个催化剂体积 气体，当有氧缺乏时将其释放出来，在这种方法中，当存在空气过剩时，氧气进入催化剂体积，当确定空气不足时，氧气从催化剂体积排出，其中 在第一控制回路中调节燃料/空气比，使得在预定间隔中确定的氧气和氧气排出的总和达到预定值，其中燃烧过程分别使用氧气过量或氧气缺乏运行 直到这些出现在催化剂体积下游的氧敏敏恩斯特探针。

    PROCEDURE AND DEVICE FOR DIAGNOSING AN EXHAUST GAS PROBE
    8.
    发明申请
    PROCEDURE AND DEVICE FOR DIAGNOSING AN EXHAUST GAS PROBE 有权

    公开(公告)号：US20100083743A1

    公开(公告)日：2010-04-08

    申请号：US12571587

    申请日：2009-10-01

    申请人： Kersten Wehmeier ,  Ronaldi Rusli ,  Andreas Koring ,  Richard Hotzel

    发明人： Kersten Wehmeier ,  Ronaldi Rusli ,  Andreas Koring ,  Richard Hotzel

    IPC分类号： G01M15/10

    CPC分类号： F02D41/1495 ,  F02D41/146 ,  F02D2041/1431 ,  F02D2041/1432 ,  G01N27/4175

    摘要： The invention relates to a procedure and a device for diagnosing the increasing speed and the dead time of an exhaust gas probe, which is arranged in the exhaust gas duct of a combustion engine, whereby the diagnosis is carried out due to a comparison of a modeled and a measured signal after a default change of a fuel air ratio of an air fuel mixture that is supplied to the combustion engine and whereby the signal is an output signal of the exhaust gas probe or a modeled or measured signal that is derived from the output signal. It is thereby provided that a first extreme value is determined in the course of the modeled signal and that a first point of time and a first starting value are determined if the modeled signal deviates by a default amount from the first extreme value, that a second extreme value in the course of the measured signal is determined and that a second point of time and a second starting value are determined, if the measured signal deviates from the second extreme value by a pre-determined amount, that a first integral is created over a pre-determined period of time, beginning at the first point of time above the different between the first starting value and the modeled signal and that a second integral is created over a second period of time, beginning at the second point of time, above the difference between the second starting value and the measured signal, that the second period of time is equal to the pre-determined period of time or that the end of the second period of time related to the point of time of the change of the fuel air ratio or related to a first point of time is determined and that from a quantitative comparison between the first integral and the second integral a quantitative comparative value is created, which indicates the increasing speed and/or the dead time of the exhaust gas probe. The procedure and the device enable a secure diagnosis of the increasing speed and the dead time of exhaust gas probes in the exhaust gas of combustion engines depending on the changing direction of the fuel air ratio that is supplied to the combustion engine.

    Procedure and device for detecting manipulations at lambda probes
    9.
    发明授权
    Procedure and device for detecting manipulations at lambda probes 有权
    用于检测λ探针操作的步骤和装置

    公开(公告)号：US08381567B2

    公开(公告)日：2013-02-26

    申请号：US12611237

    申请日：2009-11-03

    申请人： Kersten Wehmeier ,  Michael Fey ,  Andreas Koring

    发明人： Kersten Wehmeier ,  Michael Fey ,  Andreas Koring

    IPC分类号： G01M15/10 ,  F02D41/22

    CPC分类号： F02D41/1474 ,  F02D41/1495 ,  F02D41/222 ,  F02D2041/2051 ,  F02D2041/2058 ,  G01M15/104 ,  Y02T10/40

    摘要： A procedure for detecting manipulations at lambda comprises the following steps; the lambda probe is excited by at least one electric excitation signal; at least one electric response signal of the probe is detected; the at least one response signal is compared to at least one default electric response signal that characterizes a not manipulated probe; the deviation of the detected at least one electric response signal from the at least one default electric response signal is used for detecting a manipulation of the probe. A device for detecting manipulations at lambda probes characterized by a switch assembly, with which the probe can be impinged with an electric excitation signal, in particular a step-wise electric excitation, preferably with a current impulse, by a evaluation switch device for evaluating a response signal, in particular the probe voltage and for comparing the excitation signal with the response signal and for assuming a manipulation in the case of a deviation of the response signal from a response signal that characterizes a not manipulated probe.

    摘要翻译： 用于检测λ的操作的过程包括以下步骤： λ探针由至少一个电激励信号激发; 检测探头的至少一个电响应信号; 将至少一个响应信号与表征未被操纵的探针的至少一个默认电响应信号进行比较; 检测到的至少一个电响应信号与至少一个默认电响应信号的偏差用于检测探头的操作。 一种用于检测在λ探针上的操作的装置，其特征在于开关组件，探针可以通过评估开关装置用电激励信号，特别是逐步电激励，优选地以电流脉冲冲击，用于评估 响应信号，特别是探针电压，并用于将激励信号与响应信号进行比较，并且用于在响应信号与表征未操纵的探针的响应信号偏离的情况下进行操作。

    Procedure and device for diagnosing an exhaust gas probe
    10.
    发明授权
    Procedure and device for diagnosing an exhaust gas probe 有权
    用于诊断排气探头的步骤和装置

    公开(公告)号：US08245566B2

    公开(公告)日：2012-08-21

    申请号：US12571587

    申请日：2009-10-01

    申请人： Kersten Wehmeier ,  Ronaldi Rusli ,  Andreas Koring ,  Richard Hotzel

    发明人： Kersten Wehmeier ,  Ronaldi Rusli ,  Andreas Koring ,  Richard Hotzel

    IPC分类号： G01M15/10

    CPC分类号： F02D41/1495 ,  F02D41/146 ,  F02D2041/1431 ,  F02D2041/1432 ,  G01N27/4175

    摘要： A procedure and device for diagnosing the increasing speed and the dead time of an exhaust gas probe includes carrying out the diagnosis by comparing a modeled and a measured signal after a default change of a fuel air ratio of an air fuel mixture that is supplied to a combustion engine. The signal is an output signal of the exhaust gas probe or a modeled or measured signal that is derived from the output signal. The device for diagnosing the velocity and the dead time of an exhaust gas probe also includes a comparing unit for comparing the modeled signal with the measured signal for diagnosing the velocity and the dead time of the exhaust gas probe after a default change of a fuel air ratio of an air fuel mixture that is supplied to the combustion engine.

    摘要翻译： 用于诊断排气探头的增加速度和死区时间的程序和装置包括通过比较在供给到空气燃料混合物的空气燃料混合物的燃料空气比的默认变化之后的建模和测量信号来进行诊断 内燃机。 该信号是排气探针的输出信号或从输出信号导出的建模或测量信号。 用于诊断排气探头的速度和死区时间的装置还包括比较单元，用于将建模的信号与用于诊断燃料空气的默认变化之后的排气探针的速度和死区时间的测量信号进行比较 供给到内燃机的空气燃料混合物的比例。