公开(公告)号：US6131446A

公开(公告)日：2000-10-17

申请号：US84789

申请日：1998-05-27

申请人： Eberhard Schnaibel ,  Lothar Raff ,  Claus-Peter Pflieger

发明人： Eberhard Schnaibel ,  Lothar Raff ,  Claus-Peter Pflieger

IPC分类号： G01N27/409 ,  F01N3/18 ,  F02D41/14 ,  F02D41/22 ,  F02D45/00 ,  G01M19/00

CPC分类号： F02D41/1441 ,  F02D41/1474 ,  F02D41/1495 ,  F02D41/222 ,  F02D41/123 ,  Y02T10/40

摘要： The invention is directed to a method for diagnosing an exhaust-gas probe mounted in the exhaust-gas system of an internal combustion engine for conducting the exhaust gas of the engine. The exhaust-gas probe is mounted downstream of the catalytic converter. The output signal of the exhaust-gas probe is monitored as the output signal changes in response to changes of the concentration of at least one of the components of the exhaust gas. The rate of the change is applied as a criterion as to the state of deterioration of the exhaust-gas probe.

摘要翻译： 本发明涉及一种用于诊断安装在用于引导发动机的废气的内燃机的排气系统中的排气探头的方法。 排气探头安装在催化转化器的下游。 随着输出信号响应于废气中的至少一个组分的浓度变化而监测排气探针的输出信号。 作为废气探针的劣化状态的标准，适用变化率。

公开(公告)号：US6073083A

公开(公告)日：2000-06-06

申请号：US923966

申请日：1997-09-05

申请人： Eberhard Schnaibel ,  Erich Junginger ,  Lothar Raff

发明人： Eberhard Schnaibel ,  Erich Junginger ,  Lothar Raff

IPC分类号： G01N27/409 ,  F02D41/14 ,  G01N27/406 ,  G01R27/02 ,  G01R27/00

CPC分类号： F02D41/1476 ,  G01N27/4065 ,  F02D41/1456

摘要： The invention is directed to an arrangement for determining the internal resistance of a lambda probe having a positive pole and an internal resistance. A computer includes at least one computer port having a switchable state, a signal input and fixed pregiven values. A supply voltage source having a positive pole and a measurement resistor are also provided. The positive pole of the supply voltage source is connected to the positive pole of the lambda probe via the computer port and the measurement resistor. An analog/digital converter is connected forward of the signal input and the positive pole of the lambda probe is connected directly to the analog/digital converter for applying variable values to the signal input via the analog/digital converter. The computer is adapted to compute the internal resistance of the lambda probe from the variable values applied to the signal input and the fixed pregiven values. A method of determining the internal resistance of a lambda probe is also disclosed.

摘要翻译： 本发明涉及一种用于确定具有正极和内阻的λ探针的内阻的装置。 计算机包括具有可切换状态，信号输入和固定预定值的至少一个计算机端口。 还提供了具有正极和测量电阻器的电源电压源。 电源电压源的正极通过计算机端口和测量电阻连接到λ探头的正极。 模拟/数字转换器连接在信号输入端前端，λ探针的正极直接连接到模/数转换器，用于通过模拟/数字转换器将变量值应用于信号输入。 计算机适用于从应用于信号输入的变量值和固定预定值计算λ探针的内部电阻。 还公开了一种确定λ探针内阻的方法。

公开(公告)号：US5307625A

公开(公告)日：1994-05-03

申请号：US921770

申请日：1992-07-30

申请人： Erich Junginger ,  Claus-Peter Pflieger ,  Lothar Raff ,  Eberhard Schnaibel

发明人： Erich Junginger ,  Claus-Peter Pflieger ,  Lothar Raff ,  Eberhard Schnaibel

IPC分类号： F02D41/14 ,  F02D41/22 ,  F02D45/00 ,  G01M15/04 ,  G01N27/26 ,  G01N27/409 ,  F01N3/20

CPC分类号： F02D41/1483 ,  F02D41/1441 ,  F02D41/1481 ,  F02D41/1482 ,  F02D41/1495

摘要： The invention is directed to a method and an arrangement for monitoring deterioration of lambda probes in the context of a two-probe control. The signal of the lambda probe forward of the converter functions to control the lambda controller and the signal of the lambda probe rearward of the converter influences the lambda controller via an actuating variable and the degree to which the controller is influenced operates for monitoring of the probe forward of the converter. With this method and arrangement, the quality and deterioration of the lambda probe forward of the converter are advantageously detected and, if required, an alarm signal is generated.

摘要翻译： 本发明涉及一种用于在双探针控制的上下文中监测λ探针的劣化的方法和装置。 转换器前面的λ探测器的信号用于控制λ控制器，并且转换器后面的λ探测器的信号通过致动变量影响λ控制器，并且控制器受影响的程度用于监测探头 转发器前进。 利用该方法和布置，有利地检测转换器前端的λ探针的质量和劣化，并且如果需要，产生报警信号。

公开(公告)号：US5298865A

公开(公告)日：1994-03-29

申请号：US872810

申请日：1992-04-24

申请人： Helmut Denz ,  Werner Mezger ,  Johannes-Dieter Wichterich ,  Ernst Wild ,  Joachim Heimes ,  Eugen Joos ,  Lothar Raff ,  Eberhard Schnaibel

发明人： Helmut Denz ,  Werner Mezger ,  Johannes-Dieter Wichterich ,  Ernst Wild ,  Joachim Heimes ,  Eugen Joos ,  Lothar Raff ,  Eberhard Schnaibel

IPC分类号： G01N27/409 ,  F02D41/14 ,  G01N27/406 ,  G01N27/417 ,  G01R31/02 ,  F01N3/00 ,  F02M7/00

CPC分类号： F02D41/1495 ,  G01N27/4065 ,  G01N27/4175

摘要： The invention is directed to a connecting circuit for a potential-free lambda probe having a ground line and a signal line and having an offset voltage source which is connected to the ground line. This offset voltage source raises the potential of the ground line to a pregiven value relative to ground. A ground short is directly detectable in the connecting circuit of the invention in that the potential measured at the signal line drops below the offset voltage. In this way, it is no longer required as in conventional circuits to check for a ground short by enriching the mixture of an engine and to monitor the exhaust gas with the lambda probe.

摘要翻译： 本发明涉及一种具有接地线和信号线的无电位λ探针的连接电路，并且具有连接到接地线的偏移电压源。 该偏移电压源将地线的电位提高到相对于地的预定值。 在本发明的连接电路中可以直接检测到接地短路，因为在信号线处测量的电位降到偏移电压以下。 以这种方式，不再像传统电路那样通过富集发动机的混合物并用λ探测器监测排气来检查地面短路。

公开(公告)号：US06245205B1

公开(公告)日：2001-06-12

申请号：US09379368

申请日：1999-08-23

申请人： Eberhard Schnaibel ,  Lothar Raff

发明人： Eberhard Schnaibel ,  Lothar Raff

IPC分类号： G01N27409

CPC分类号： F02D41/1495

摘要： The invention is directed to a diagnostic arrangement for a potentiometric, electrical exhaust-gas probe for the control of combustion processes with a periodic change of the composition of the combusting air/fuel mixture between oxygen deficiency and oxygen excess. The exhaust-gas probe is heated by an electric heater and outputs a probe signal when the exhaust-gas probe operates without fault which changes between a first region of high signal values (oxygen deficiency) and a second region of low signal values (oxygen excess) with the first region and the second region being separated by a third region of values. A fault announcement is outputted when the probe signal lies within the third region longer than a pregiven longest duration. A fault announcement is also outputted when changes of the current supplied to the electric heater occur within the pregiven longest duration and when the probe signal has temporarily left the third region of values after the change of the heater current.

摘要翻译： 本发明涉及用于控制燃烧过程的电位计，电气排气探针的诊断装置，其中氧气缺氧和氧气过量之间的燃烧空气/燃料混合物的组成的周期性变化。 废气探头由电加热器加热，当排气探针无故障地操作时，输出探测信号，在高信号值（缺氧）的第一区域和低信号值的第二区域（氧气过量）之间发生变化 ），其中第一区域和第二区域被第三区域区分开。 当探测信号处于第三区域内时比输出最长持续时间更长的时间，输出故障通知。 当提供给电加热器的电流的变化发生在预先设定的最长持续时间内并且当探头信号在加热器电流改变之后暂时离开第三区域时，也输出故障通知。

公开(公告)号：US6034610A

公开(公告)日：2000-03-07

申请号：US114483

申请日：1998-07-13

申请人： Eberhard Schnaibel ,  Erich Junginger ,  Lothar Raff

发明人： Eberhard Schnaibel ,  Erich Junginger ,  Lothar Raff

IPC分类号： G01N27/409 ,  F02B39/16 ,  F02D41/14 ,  G01N27/26 ,  G01N27/407 ,  G01N27/416 ,  G08B21/00

CPC分类号： F02B39/16 ,  F02D41/1455 ,  F02D41/1494 ,  F02D41/1495 ,  F02D41/1496 ,  G01N27/407 ,  G01N27/4163

摘要： The invention is directed to a method for monitoring the operation of a gas probe, such as a .lambda.-probe for an internal combustion engine. The .lambda.-probe has a probe ceramic (Nernst cell) and a probe heater. The internal resistance (x) of the probe ceramic is measured and a desired value (y) is determined in dependence upon the temperature of the gas to be detected and the heating power of the probe heater. The internal resistance (x) is then compared to the desired value (y) and, when the measured value of the internal resistance (x) exceeds the desired value (y), then a fault signal is generated and/or the fault signal is outputted and/or the fault signal is stored.

摘要翻译： 本发明涉及用于监测气体探针（例如用于内燃机的λ探针）的操作的方法。 λ探针具有探针陶瓷（能斯特细胞）和探针加热器。 测量探针陶瓷的内阻（x），并根据被检测气体的温度和探针加热器的加热功率来确定期望值（y）。 然后将内部电阻（x）与期望值（y）进行比较，并且当内部电阻（x）的测量值超过期望值（y）时，产生故障信号和/或故障信号 输出和/或故障信号被存储。

公开(公告)号：US5267439A

公开(公告)日：1993-12-07

申请号：US806309

申请日：1991-12-13

申请人： Lothar Raff ,  Eberhard Schnaibel

发明人： Lothar Raff ,  Eberhard Schnaibel

IPC分类号： B01J38/00 ,  F01N11/00 ,  G01M15/04 ,  F01N3/20

CPC分类号： F01N11/007 ,  F01N2550/02 ,  Y02T10/47

摘要： The invention is directed to a method for checking the aging condition of a catalyzer by utilizing a lambda probe rearward of the catalyzer. For a transition from lean to rich which takes place within a pregiven time span, a check is made if an overshoot of the probe signal occurs which exceeds a pregiven amplitude. A conclusion is drawn as to the aging condition of the catalyzer from an overshoot when the latter occurs. Transitions between lean and rich and vice versa take place especially during the transition from overrun operation to controlled operation of the engine. Transitions of this kind have large swings of the signals of the lambda probes and this permits reliable measurements. In contrast, conventional methods operate exclusively when the engine to which the catalyzer belongs is lambda controlled. The relatively small signal amplitudes occurring thereby lead to a signal/noise ratio which is considerably poorer than in the methods according to the invention.

摘要翻译： 本发明涉及一种通过利用催化剂后面的λ探针来检查催化剂的老化状态的方法。 对于在预先设定的时间范围内发生从瘦到丰富的过渡，如果发生超过预先设定的幅度的探头信号的过冲，则进行检查。 从后期发生时的催化剂的老化状况得出结论。 精益和富余之间的转变反之亦然，特别是在从超速运行过渡到发动机的受控操作过程中。 这种转换具有λ探针信号的大的波动，这样可以进行可靠的测量。 相比之下，当催化剂所属的发动机是λ控制时，常规方法仅仅是操作的。 由此产生的相对较小的信号幅度导致与根据本发明的方法相比差的信噪比。

公开(公告)号：US5203165A

公开(公告)日：1993-04-20

申请号：US738360

申请日：1991-07-31

申请人： Ernst Wild ,  Gunther Plapp ,  Lothar Raff ,  Michael Westerdorf ,  Eberhard Schnaibel

发明人： Ernst Wild ,  Gunther Plapp ,  Lothar Raff ,  Michael Westerdorf ,  Eberhard Schnaibel

IPC分类号： F01N9/00 ,  F01N11/00 ,  F02D41/14

CPC分类号： F01N11/007 ,  F02D41/1441 ,  F02D41/1487 ,  F01N2550/02 ,  F02D41/1456 ,  Y02T10/47

摘要： The invention is directed to a method for lambda control of an internal combustion engine having a catalyzer and a measuring probe arrangement in front of the catalyzer for emitting a measuring signal and a testing probe arrangement behind the catalyzer for emitting a test signal. The method includes the steps of: forming a ratio between the measuring signal and the test signal at pregiven operating conditions; evaluating said ratio as an estimating quantity for the conversion rate of the catalyzer; and, modifying output values of control parameters in a pregiven controlled manner on the basis of the instantaneous values of said ratio, said output values being applicable for controlling an internal combustion engine having a new catalyzer. This method affords the advantage that it evaluates a catalyzer with the aid of the above-mentioned ratio value and controllably modifies values of control parameters in dependence upon the evaluation ratio. This leads to an especially stable control with low toxic gas discharge.

摘要翻译： 本发明涉及一种用于在催化剂前面具有催化剂和测量探针装置的用于发射测量信号的内燃机的λ控制方法和用于发射测试信号的催化剂后面的测试探针装置。 该方法包括以下步骤：在预定的操作条件下形成测量信号与测试信号之间的比率; 将所述比例评估为所述催化剂的转化率的估计量; 并且基于所述比率的瞬时值，以预定的控制方式修改控制参数的输出值，所述输出值适用于控制具有新催化剂的内燃机。 该方法具有借助于上述比值来评价催化剂的优点，并根据评价比可控制地改变控制参数的值。 这导致了具有低毒气体排放的特别稳定的控制。

公开(公告)号：US5167120A

公开(公告)日：1992-12-01

申请号：US840817

申请日：1992-02-25

申请人： Erich Junginger ,  Lothar Raff ,  Eberhard Schnaibel

发明人： Erich Junginger ,  Lothar Raff ,  Eberhard Schnaibel

IPC分类号： F01N9/00 ,  F02D41/14 ,  F02D45/00

CPC分类号： F02D41/1441 ,  F02D41/1494

摘要： The invention is directed to a method for the temperature open-loop control and closed-loop control of exhaust gas probes for mixture control systems having several heatable exhaust gas probes. For this purpose, the temperature of one exhaust gas probe is closed-loop controlled in a control loop and the heaters of other exhaust gas probes are open-loop controlled. The closed-loop controlled exhaust gas probe controls the open-loop controlled exhaust gas probes insofar as the actuating variable of the temperature control loop is used as the output value for the temperature open-loop control of the other exhaust gas probes.

摘要翻译： 本发明涉及一种用于具有几个可加热排气探针的混合物控制系统的排气探针的温度开环控制和闭环控制的方法。 为此，一个排气探头的温度在控制回路中闭环控制，其他排气探头的加热器是开环控制的。 只要使用温度控制回路的驱动变量作为其他废气探头的温度开环控制的输出值，闭环控制的排气探头就控制开环控制的排气探头。

公开(公告)号：US5140535A

公开(公告)日：1992-08-18

申请号：US466264

申请日：1990-02-20

申请人： Lothar Raff ,  Eberhard Schnaibel ,  Michael Westerdorf

发明人： Lothar Raff ,  Eberhard Schnaibel ,  Michael Westerdorf

IPC分类号： G01N27/409 ,  F02D41/14 ,  G01N27/406

CPC分类号： G01N27/4065 ,  F02D41/1496 ,  F02D41/1456

摘要： In a method for lambda value detection, the voltages of the loaded and the unloaded lambda sensor are detected and the internal resistance of the sensor is calculated from these values with the aid of the known value of the load resistance. The value of the internal resistance and the respective value of the voltage of the sensor in the unloaded state serve as input variables for a characteristic field, in which lambda values dependent on values of the internal resistance and of the voltage of the sensor in the unloaded state are stored. The method of the invention affords the advantage that lambda values can be measured very accurately even in the strongly temperature-dependent rich branch of a sensor, for example, of a sensor of the Nernst type. The values thus detected can be indicated by a measuring device or they can be used for exhaust gas control, for example in warming-up or at full load.

摘要翻译： PCT No.PCT / DE88 / 00504 Sec。 371日期1990年2月20日 102（e）1990年2月20日日期PCT提交1988年8月18日PCT公布。 出版物WO89 / 01623 日期：1989年2月23日。在λ值检测的方法中，检测负载和未加载的λ传感器的电压，并借助已知的负载电阻值从这些值计算传感器的内部电阻 。 内部电阻的值和传感器在无负载状态下的电压的相应值用作特征场的输入变量，其中取决于内部电阻值和传感器在未加载的电压的值的λ值 状态被存储。 本发明的方法提供的优点是，即使在传感器（例如，恩斯特型）的传感器的强烈依赖于温度的丰富支路中也可以非常精确地测量λ值。 这样检测的值可以由测量装置指示，或者它们可以用于排气控制，例如在预热或满载时。