公开(公告)号：US5291873A

公开(公告)日：1994-03-08

申请号：US895550

申请日：1992-06-08

Applicant: Klaus Hirschmann ,  Lothar Raff ,  Lutz Reuschenbach ,  Eberhard Schnaibel

Inventor： Klaus Hirschmann ,  Lothar Raff ,  Lutz Reuschenbach ,  Eberhard Schnaibel

IPC: F02D41/14 ,  F02D45/00

CPC classification number: F02D41/1486 ,  F02D41/1483

Abstract: The invention is directed to a method for determining the particular current value of at least one control parameter for a lambda control of an internal combustion engine which provides a shift to make the fuel mixture lean or a shift to make the fuel mixture rich in dependence upon the operating state of the controlled engine. The method includes the steps of: determining a base value for the control parameter in dependence upon the current value of at least one pregiven operating variable as the current value applies for a control with a minimal discharge of toxic gas during steady-state operation of the engine; and, modifying the base value with a transition variable having a value decaying as a function of time when changes in the operating state of the engine occur. The method of the invention affords the advantage that the control parameter does not have a value which was applied for a minimum discharge of toxic gas for a typical operation sequence at steady-state or transient operation; instead, for steady-state and transient operations, optimized values are available. In this way, a discharge of exhaust gas is obtained which is lower compared to possibilities which have existed up until now.

Abstract translation: 本发明涉及一种用于确定内燃机的λ控制的至少一个控制参数的特定电流值的方法，所述控制参数提供了使燃料混合物偏离或使燃料混合物富集的变化 受控发动机的运行状态。 该方法包括以下步骤：根据至少一个预定操作变量的当前值来确定控制参数的基值，因为当前值适用于在稳态运行期间具有最小排放有毒气体的控制 发动机; 以及当发生发动机的运行状态发生变化时，用具有衰减作为时间的函数的值的转换变量来修改基值。 本发明的方法提供的优点是，在稳态或瞬态操作中，控制参数不具有用于典型操作顺序的有毒气体的最小排放的值; 相反，对于稳态和瞬态操作，可以使用优化值。 以这种方式，获得与迄今为止存在的可能性相比较低的废气排放。

公开(公告)号：US5267439A

公开(公告)日：1993-12-07

申请号：US806309

申请日：1991-12-13

Applicant: Lothar Raff ,  Eberhard Schnaibel

Inventor： Lothar Raff ,  Eberhard Schnaibel

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

CPC classification number: F01N11/007 ,  F01N2550/02 ,  Y02T10/47

Abstract: 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.

Abstract translation: 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

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

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

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

CPC classification number: F01N11/007 ,  F02D41/1441 ,  F02D41/1487 ,  F01N2550/02 ,  F02D41/1456 ,  Y02T10/47

Abstract: 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.

Abstract translation: 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

Applicant: Erich Junginger ,  Lothar Raff ,  Eberhard Schnaibel

Inventor： Erich Junginger ,  Lothar Raff ,  Eberhard Schnaibel

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

CPC classification number: F02D41/1441 ,  F02D41/1494

Abstract: 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.

Abstract translation: 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

Applicant: Lothar Raff ,  Eberhard Schnaibel ,  Michael Westerdorf

Inventor： Lothar Raff ,  Eberhard Schnaibel ,  Michael Westerdorf

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

CPC classification number: G01N27/4065 ,  F02D41/1496 ,  F02D41/1456

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US4419190A

公开(公告)日：1983-12-06

申请号：US357803

申请日：1982-03-12

Applicant: Hermann Dietz ,  Ferdinand Grob ,  Klaus Muller ,  Lothar Raff ,  Franz Rieger ,  Hans-Martin Wiedenmann

Inventor： Hermann Dietz ,  Ferdinand Grob ,  Klaus Muller ,  Lothar Raff ,  Franz Rieger ,  Hans-Martin Wiedenmann

IPC: G01N27/41 ,  G01K7/00 ,  G01K7/28 ,  G01N27/406 ,  G01N27/409 ,  G05D23/24 ,  G01N27/58

CPC classification number: G01N27/4065 ,  G01K7/28 ,  G05D23/1906 ,  G05D23/24

Abstract: To provide for temperature measurement of a solid electrolyte polarographic gas composition sensor, an ac signal is superimposed from an ac voltage source (2) on the applied voltage from a voltage source (1) if the sensor is a polarographic sensor, the ac signal being separated from the output by a filter combination (6, 7), the dc output being evaluated as usual, and the ac output being rectified in a rectifier (9) to obtain a measure of the temperature since the ac resistance (R.sub.alt) is highly temperature dependent (see FIG. 3). The ac preferably is about 10% of the applied dc voltage, so that the voltage swing of the ac potential falls well within the linear range of output current with respect to voltage (see FIG. 2). The output from the ac channel (7, 9) to evaluate the temperature signal can be connected to a control loop circuit (10, 11), including a heater (11) to heat the sensor to maintain a uniform temperature thereof.

Abstract translation: 为了提供固体电解质极谱气体组成传感器的温度测量，如果传感器是极谱传感器，则交流电信号从交流电压源（2）叠加在来自电压源（1）的施加电压上，交流信号为 通过滤波器组合（6,7）从输出分离，直流输出按照常规进行评估，并且交流输出在整流器（9）中整流以获得由于交流电阻（Ralt）高的温度的测量 温度依赖（参见图3）。 交流电压优选为所施加的直流电压的约10％，使得交流电位的电压摆幅相对于电压在输出电流的线性范围内很好地下降（见图2）。 来自用于评估温度信号的交流通道（7,9）的输出可以连接到包括加热器（11）的控制回路电路（10,11），以加热传感器以保持其均匀的温度。

公开(公告)号：US07109721B2

公开(公告)日：2006-09-19

申请号：US10888295

申请日：2004-07-09

Applicant: Helmut Maurer ,  Eberhard Schnaibel ,  Lothar Raff ,  Oliver Hoerrmann

Inventor： Helmut Maurer ,  Eberhard Schnaibel ,  Lothar Raff ,  Oliver Hoerrmann

IPC: G01R31/327 ,  H01H1/60

CPC classification number: H01H1/605 ,  Y10T307/924

Abstract: A method and an electronic circuit for regenerating an electrical contact are provided in order to remedy the problem of electrical contacts becoming highly resistive over time. Electrical contacts become highly resistive over time, particularly when the contacts are thermally highly stressed and/or exposed to corrosive gases. To remedy this undesired effect and to reestablish the low resistance of the contacts, an electrical regenerating signal is applied to these contacts.

Abstract translation: 提供一种用于再生电触头的方法和电子电路，以便补救电触头随时间变得高度阻力的问题。 电触点随时间变得高度阻力，特别是当触点受到高度的高应力和/或暴露于腐蚀性气体时。 为了补救这种不良影响并重新建立触点的低电阻，电再生信号被施加到这些触点。

公开(公告)号：US6131446A

公开(公告)日：2000-10-17

申请号：US84789

申请日：1998-05-27

Applicant: Eberhard Schnaibel ,  Lothar Raff ,  Claus-Peter Pflieger

Inventor： Eberhard Schnaibel ,  Lothar Raff ,  Claus-Peter Pflieger

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

CPC classification number: F02D41/1441 ,  F02D41/1474 ,  F02D41/1495 ,  F02D41/222 ,  F02D41/123 ,  Y02T10/40

Abstract: 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.

Abstract translation: 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

Applicant: Eberhard Schnaibel ,  Erich Junginger ,  Lothar Raff

Inventor： Eberhard Schnaibel ,  Erich Junginger ,  Lothar Raff

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

CPC classification number: F02D41/1476 ,  G01N27/4065 ,  F02D41/1456

Abstract: 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.

Abstract translation: 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

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

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

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

CPC classification number: F02D41/1483 ,  F02D41/1441 ,  F02D41/1481 ,  F02D41/1482 ,  F02D41/1495

Abstract: 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.

Abstract translation: 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。