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1. 发明授权

US5074270A Method for protecting a catalyzer 失效
标题翻译：保护催化剂的方法
公开(公告)号：US5074270A
公开(公告)日：1991-12-24
申请号：US644011
申请日：1991-01-22
申请人： Helmut Denz , Ernst Wild , Rudi Mayer
发明人： Helmut Denz , Ernst Wild , Rudi Mayer
IPC分类号： F02D41/22
CPC分类号： F02D41/221 , F01N2430/06 , Y02T10/40
摘要： The invention is directed to a method for protecting a catalyzer against overheating. The method includes the steps of checking whether an injection valve no longer correctly closes by means of a conventional diagnostic process. If the condition is present that an injection valve no longer correctly closes, the air/fuel mixture for all cylinders is enriched and an overrun switchoff is inhibited. The method leads to the condition that in all load ranges, the oxygen quantity reaching the catalyzer is limited so that no damaging afterburning can take place. In this way, the catalyzer is protected against overheating and the affected vehicle is not disabled.
摘要翻译：本发明涉及一种用于保护催化剂免于过热的方法。该方法包括以下步骤：通过常规诊断过程检查喷射阀是否不再正确关闭。如果存在注入阀不再正确关闭的情况，则所有气缸的空气/燃料混合物都会被浓缩，并且可以抑制超限切换。该方法导致在所有负载范围内到达催化剂的氧量受到限制，从而不会发生有害的后燃烧。以这种方式，催化剂被防止过热，并且受影响的车辆不被禁用。

2. 发明授权

US5090387A Method and arrangement for checking the operational capability of an exhaust-gas probe heater and the supply system thereof 失效
标题翻译：检查排气加热器及其供应系统的运行能力的方法和装置
公开(公告)号：US5090387A
公开(公告)日：1992-02-25
申请号：US684908
申请日：1991-04-30
申请人： Rudi Mayer , Helmut Denz , Ernst Wild , Rainer Frank
发明人： Rudi Mayer , Helmut Denz , Ernst Wild , Rainer Frank
IPC分类号： G01N27/409 , F02D41/14 , F02D45/00 , G01N27/00 , G01N27/12 , G01N27/26 , G01N27/406
CPC分类号： F02D41/1495 , F02D41/1494 , G01N27/4067
摘要： A method and an arrangement for carrying out the method are proposed whose fundamental concept is to perform a diagnosis of the heating device of an exhaust-gas probe, which emits a control signal for closed-loop controlling the air/fuel mixture of an internal combustion engine. The diagnosis is based on that the exhaust-gas probe is heated more rapidly because of the switching-in of the heating device than by mere heating by the exhaust gases which flow past the exhaust-gas probe. The heating device includes at least the probe heater, devices which supply the probe heater with the necessary heating power, and the supply leads therefor.
摘要翻译： PCT No.PCT / DE90 / 00569 Sec。 371日期：1991年4月30日 102（e）日期1991年4月30日PCT提交1990年7月26日PCT公布。出版物WO91 / 03636 1991年3月21日。提出了一种执行该方法的方法和装置，其基本概念是对排气探针的加热装置进行诊断，其发出用于闭环控制空气的控制信号 /内燃机的燃料混合物。诊断是基于由于加热装置的接通而使得排气探针被加热得更快，而不仅仅是通过流过排气探针的废气加热。加热装置至少包括探针加热器，为探头加热器提供必要的加热功率的装置和供应引线。

3. 发明授权

US5311138A Device for monitoring the functon of an electric load, its drive and the associated connections 失效
标题翻译：用于监控电力负载及其驱动器及相关连接功能的装置
公开(公告)号：US5311138A
公开(公告)日：1994-05-10
申请号：US778172
申请日：1991-12-13
申请人： Karl Ott , Rudi Mayer , Helmut Denz , Hans-Peter Strobele , Reinhard Palesch , Jurgen Eckhardt
发明人： Karl Ott , Rudi Mayer , Helmut Denz , Hans-Peter Strobele , Reinhard Palesch , Jurgen Eckhardt
IPC分类号： G01R31/02 , G01R31/00 , G01R31/327
CPC分类号： G01R31/007 , G01R31/3275
摘要： Circuitry for monitoring the function of electric load, an output stage and a control circuit for driving the output stage and the lines that connect these elements. The circuitry includes at least one fault acquisition logic that is connected in parallel with the output stage. The fault acquisition logic has a terminal that connects to an input of the output stage and another terminal that connects to the output of the output stage. The fault acquisition logic also is connected to a reference potential. The fault acquisition logic has a comparator for comparing potentials for determining fault conditions. Detected fault conditions may be stored in a buffer memory that connects to a main memory. The buffer memory may also have a time delay associated with it. The circuitry also may include a coder for encoding signals indicative of the fault conditions that are detected by the fault acquisition logic. The circuitry may further include a safety disconnect to protect the output stage against overload.
摘要翻译： PCT No.PCT / DE91 / 00255 Sec。 371日期1991年12月13日 102（e）日期1991年12月13日PCT 1991年3月22日PCT公布。公开号WO91 / 16637 日期1991年10月31日。用于监控电气负载功能的电路，用于驱动输出级的输出级和控制电路以及连接这些元件的线。电路包括与输出级并联连接的至少一个故障采集逻辑。故障采集逻辑具有连接到输出级的输入的端子和连接到输出级的输出端的另一端子。故障采集逻辑也连接到参考电位。故障采集逻辑具有用于比较用于确定故障状况的电位的比较器。检测到的故障条件可能存储在连接到主存储器的缓冲存储器中。缓冲存储器也可以具有与其相关联的时间延迟。电路还可以包括编码器，用于编码指示由故障获取逻辑检测到的故障状况的信号。电路还可以包括安全断开以保护输出级免于过载。

4. 发明授权

US5763771A Method and arrangement for detecting and documenting damage to a catalytic converter 失效
标题翻译：用于检测和记录催化转化器损坏的方法和装置
公开(公告)号：US5763771A
公开(公告)日：1998-06-09
申请号：US731740
申请日：1996-10-18
申请人： Karl Ott , Helmut Denz , Ernst Wild
发明人： Karl Ott , Helmut Denz , Ernst Wild
IPC分类号： B60K15/077 , F01N3/20 , F01N9/00 , F01N11/00 , F02D45/00 , G01M15/00
CPC分类号： F01N3/20 , F01N11/00 , F01N9/00 , F01N2550/02 , Y02T10/47
摘要： The invention is directed to a method for detecting and documenting damage to a catalytic converter in a motor vehicle having a fuel tank and an internal combustion engine wherein combustion misfires can occur when the level of fuel in the tank drops below a critical level. The method includes: detecting the level of fuel in the tank utilizing a fill-level sensor device; utilizing a circuit arrangement to determine when the level in the tank reaches the critical level and switching on a warning lamp to indicate that the critical level has been reached; storing a value corresponding to the critical level and the operating state of the warning lamp in a memory as a first set of data; detecting misfires of the engine and storing information as to the misfires in the memory as a second set of data; and, logically combining the first and second sets of data when the misfires are present at the same time as the critical fill level so that a determination can be made in the context of a later read out of the logically coupled data as to whether the misfires are associated with a level of the fuel corresponding to the critical level.
摘要翻译：本发明涉及一种用于检测和记录具有燃料箱和内燃机的机动车辆中的催化转化器的损坏的方法，其中当燃料箱中的燃料水平低于临界水平时，可能发生燃烧失火。该方法包括：利用填充层传感器装置检测罐中的燃料水平; 利用电路装置来确定罐中的水位何时达到临界水平并打开警告灯以指示达到临界水平; 将与临界水平相对应的值和警告灯的操作状态存储在存储器中作为第一组数据; 检测发动机的失火并将关于存储器中的失火的信息存储为第二组数据; 并且当在与临界填充水平同时存在失火时逻辑地组合第一组数据和第二组数据，使得可以在稍后读取逻辑耦合数据的上下文中确定是否失火与对应于临界水平的燃料水平相关联。

5. 发明授权

US5442551A Tank-venting system for a motor vehicle as well as a method and an arrangement for checking the operability thereof 失效
标题翻译：用于机动车辆的排气系统以及用于检查其可操作性的方法和装置
公开(公告)号：US5442551A
公开(公告)日：1995-08-15
申请号：US989026
申请日：1993-03-11
申请人： Helmut Denz , Ernst Wild , Andreas Blumenstock
发明人： Helmut Denz , Ernst Wild , Andreas Blumenstock
IPC分类号： B60K15/035 , F02D35/00 , F02M25/08 , G01M3/26 , F02M33/02 , G01M15/00
CPC分类号： G01M3/26 , B60K15/03504 , F02M25/0809
摘要： A method for determining the operability of a tank-venting system on a motor vehicle subjects the signals for the volume flow through the tank-venting valve and the signals for the pressure difference between the tank interior and the ambient to a cross-covariance analysis. The above-mentioned signals are formed by a high pass in advance of forming the cross-covariance function and the maximum or the mean value of the cross-covariance function is formed with respect to the product of the two input variables. A variance measure is formed for the signal of the volume flow through the tank-venting valve and a transfer factor is computed from the variance measure and the mean value or maximum. The tank-venting system is deemed to be operational when the transfer range lies in a pregiven region. An advantage of the method is seen in the independence of the tank-pressure changes which are not caused by volume-flow changes through the tank-venting valve. Here, changes are especially of concern which are caused by the sudden generation of vapor in the tank such as caused by sloshing fuel.
摘要翻译： PCT No.PCT / DE92 / 00504 Sec。 371日期1993年3月11日 102（e）1993年3月11日PCT PCT 1992年6月19日PCT公布。出版物WO93 / 01405 日期：1993年1月21日。一种用于确定机动车辆上的排气系统的可操作性的方法，经由通气阀的体积流量的信号和罐内部与环境之间的压力差的信号进行交叉协方差分析。上述信号在形成交叉协方差函数之前通过高通形成，并且相对于两个输入变量的乘积形成互协方差函数的最大值或平均值。对于通过排罐阀的体积流量的信号形成方差测量，并根据方差测量值和平均值或最大值计算转移系数。当转移范围在预制区域时，通风系统被认为是可操作的。该方法的优点在于容器压力变化的独立性，这不是通过通气阀的体积流量变化引起的。在这里，特别关注的是由于罐内蒸气的突然产生，如由燃料挥动引起的。

6. 发明授权

US5255515A Method and arrangement for obtaining an evaluation value for the performance loss of a catalytic converter 失效
标题翻译：获得催化转化器性能损失评估值的方法和装置
公开(公告)号：US5255515A
公开(公告)日：1993-10-26
申请号：US981844
申请日：1992-11-25
申请人： Andreas Blumenstock , Ernst Wild , Helmut Denz , Klaus Ries-Muller
发明人： Andreas Blumenstock , Ernst Wild , Helmut Denz , Klaus Ries-Muller
IPC分类号： F01N3/20 , F01N11/00 , F02B77/08 , F02D35/00 , G01M15/04 , G01N33/00 , F07N3/20
CPC分类号： F01N11/007 , F01N2550/02 , Y02T10/47
摘要： The invention is directed to a method for obtaining a value for evaluating the performance loss of a catalytic converter with the aid of a forward signal of a forward gas probe mounted forward of the catalytic converter and a rearward signal of a rearward gas probe mounted rearward of the catalytic converter, the catalytic converter being connected to an internal combustion engine. The method includes the steps of: carrying out the method during the steady-state operation of the engine; multiplying the forward signal and the rearward signal with each other to form a plurality of products; averaging the products over a plurality of oscillations of the forward signal to obtain a mean value; and, utilizing the mean value as a value for evaluating the performance loss of the catalytic converter. This correlation method can be varied in different ways and especially in that the forward-probe signal is correlated without or with phase shift with the rearward-probe signal. A cross-correlation factor or the real or imaginary component of an orthogonal correlation or other correlation values are obtained in dependence upon the nature of the correlation. These correlation values are used for evaluating the performance loss of the catalytic converter. The evaluation of the performance loss of the catalytic converter with the aid of these correlation values is very significantly more reliable than the evaluation with the aid of amplitudes or amplitude mean values of the probe signals.
摘要翻译：本发明涉及一种用于通过安装在催化转化器前方的正向气体探针的前向信号和后方气体探针的向后信号获得用于评估催化转化器的性能损失的值的方法，催化转化器，催化转化器连接到内燃机。该方法包括以下步骤：在发动机的稳态运行期间执行该方法; 将前向信号和后向信号彼此相乘以形成多个乘积; 在正向信号的多个振荡中对产品进行平均以获得平均值; 并利用平均值作为评价催化转化器的性能损失的值。该相关方法可以以不同的方式变化，特别是前向探针信号与后向探测信号无相关或相移相关。取决于相关性质，获得正交相关或其他相关值的互相关因子或实分量或虚分量。这些相关值用于评估催化转化器的性能损失。借助于这些相关值对催化转化器的性能损失的评估与借助于探测信号的幅度或振幅平均值的评估相比非常显着更可靠。

7. 发明授权

US5666925A Method and arrangement for diagnosing a tank-venting system 失效
标题翻译：诊断通气系统的方法和装置
公开(公告)号：US5666925A
公开(公告)日：1997-09-16
申请号：US647757
申请日：1996-05-15
申请人： Helmut Denz , Ernst Wild , Andreas Blumenstock , Georg Mallebrein
发明人： Helmut Denz , Ernst Wild , Andreas Blumenstock , Georg Mallebrein
IPC分类号： G01M3/24 , B60K15/077 , F02M25/08 , F02M37/00 , G01M3/26 , F02M37/04
CPC分类号： F02M25/0809
摘要： The invention is directed to a method for checking the tightness of a tank-venting system used with an internal combustion engine having an intake pipe. The tank-venting system includes a fuel tank wherein fuel vapor forms, a storage device connected to the fuel tank, the storage device having a vent opening and a device for closing the vent opening, and a tank-venting valve interconnecting the intake pipe and the storage device whereby the fuel vapor is conducted from the tank to the intake pipe via the storage device and the tank-venting valve. The method includes the steps of: (a) during operation of the engine and while the venting opening is closed, carrying out one of the following: (a1) opening the tank-venting valve and drawing a predetermined quantity of gaseous substance through the tank-venting valve, or (a2) opening the tank-venting valve and drawing a gaseous substance through the tank-venting valve so long until a predetermined underpressure is reached in the tank-venting system, so that a pressure fluctuation is produced in the tank-venting system with the pressure fluctuation being characterized by a plurality of characteristic variables; (b) evaluating at least one of the characteristic variables to judge the tightness of the tank-venting system.
摘要翻译：本发明涉及一种用于检查与具有进气管的内燃机一起使用的排气系统的紧密度的方法。排气系统包括燃料蒸气形成的燃料箱，连接到燃料箱的存储装置，具有通气口的存储装置和用于关闭通风口的装置，以及将进气管和存储装置，其中燃料蒸气经由存储装置和排气阀从罐传导到进气管。该方法包括以下步骤：（a）在发动机运转期间和通气口关闭的同时，执行以下操作之一：（a1）打开排气阀并通过罐抽出预定量的气态物质或者（a2）打开排气阀，并将气体物质通过罐排放阀长时间直到达到在通气系统中预定的负压，从而在罐中产生压力波动压力波动的特征在于多个特征变量; （b）评估至少一个特征变量来判断排气系统的紧密度。

8. 发明授权

US5460141A Method and apparatus for checking the tightness of a tank-venting system 失效
标题翻译：用于检查排气系统密封性的方法和装置
公开(公告)号：US5460141A
公开(公告)日：1995-10-24
申请号：US246518
申请日：1994-05-20
申请人： Helmut Denz , Ernst Wild , Andreas Blumenstock
发明人： Helmut Denz , Ernst Wild , Andreas Blumenstock
IPC分类号： F02M25/08 , F02M33/02
CPC分类号： F02M25/0809
摘要： The invention is directed to a method for checking the tightness of a tank-venting system when a pregiven test condition is satisfied. The method includes the steps of: (a) building up a difference pressure in the tank-venting system irrespective of whether the pregiven test condition is satisfied; (b) determining the presence of the test condition and then closing the tank-venting system; (c) determining the value of the decay gradient of the difference pressure when the pregiven test condition is satisfied thereby losing no time in starting the check of the tightness; and, (d) drawing a conclusion as to the tightness of the tank-venting system when the value of the decay gradient is less in magnitude than a threshold decay gradient. In this way, as soon as the test condition is satisfied, a determination of the value of the decay gradient of the difference pressure already built up can be started. An apparatus for carrying out the method is also disclosed.
摘要翻译：本发明涉及一种在满足预制测试条件时检查罐排气系统的紧密度的方法。该方法包括以下步骤：（a）建立罐排气系统中的差压，无论是否满足预先测试条件; （b）确定测试条件的存在，然后关闭油箱排气系统; （c）确定当预先测试条件满足时差压的衰减梯度的值，从而在开始检查紧密度时没有时间; 和（d）当衰减梯度的值小于阈值衰减梯度时，得出关于通气系统的紧密度的结论。以这种方式，一旦满足测试条件，就可以开始确定已经建立的差压的衰减梯度的值。还公开了一种用于执行该方法的装置。

9. 发明授权

US5298865A Connecting circuit for connecting a lambda probe to a control apparatus of an internal combustion engine and test method for said circuit 失效
标题翻译：用于将λ探针连接到内燃机的控制装置的连接电路和用于所述电路的测试方法
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。

10. 发明授权

US5193512A Tank-venting system for a motor vehicle and method for checking the operability thereof 失效
标题翻译：用于电动车辆的油罐系统和检查其操作性的方法
公开(公告)号：US5193512A
公开(公告)日：1993-03-16
申请号：US768973
申请日：1991-10-08
申请人： Ulrich Steinbrenner , Helmut Denz , Ernst Wild , Wolfgang Wagner
发明人： Ulrich Steinbrenner , Helmut Denz , Ernst Wild , Wolfgang Wagner
IPC分类号： F02B77/08 , F02M25/08 , F02M37/00
CPC分类号： F02M25/0809 , F02M25/0818
摘要： A tank-venting system has an adsorption filter (AF) with a venting line (BL) which can be shut off by means of a controllable shut-off valve (AV). The shut-off venting valve makes it possible to set underpressures and overpressures in the system in a concerted manner in order to check its operability. As a result, particularly reliable information relating to the operability can be obtained.
摘要翻译： PCT No.PCT / DE91 / 00010 Sec。 371日期1991年10月8日 102（e）日期1991年10月8日PCT 1991年1月9日PCT PCT。出版物WO91 / 12426 日期为1991年8月22日。一种排气系统具有吸气过滤器（AF），通气管线（BL）可通过可控截止阀（AV）切断。关闭通气阀可以以一致的方式设置系统中的欠压和超压，以便检查其可操作性。结果，可以获得与可操作性有关的特别可靠的信息。

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