公开(公告)号：US08087290B2

公开(公告)日：2012-01-03

申请号：US11904763

申请日：2007-09-27

申请人： Stefan Wickert ,  Jochen Schoenthaler

发明人： Stefan Wickert ,  Jochen Schoenthaler

IPC分类号： G01M15/10

CPC分类号： F02D41/222 ,  F01N2560/02 ,  F02D41/1408 ,  F02D41/1445 ,  F02D41/146 ,  Y02T10/40

摘要： A method of performing a diagnosis of an exhaust gas sensor disposed in an exhaust gas region of an internal combustion engine testing the sensor to determine whether a change of at least one exhaust gas component, which is detectable by the exhaust gas sensor, results in an expected change of the sensor signal, and implementing the diagnosis if a specified change in at least one operating parameter of the internal combustion engine and/or at least one parameter of the exhaust gas in the running operation of the internal combustion engine are detected.

摘要翻译： 一种执行诊断排气传感器的方法，所述排气传感器设置在测试传感器的内燃机的排气区域中，以确定是否能够由排气传感器检测到的至少一个废气分量的变化导致 如果检测到内燃机的运行中的至少一个运转参数的指定变化和/或排气的至少一个参数，则检测出传感器信号的预期变化，以及执行诊断。

公开(公告)号：US20090044612A1

公开(公告)日：2009-02-19

申请号：US12028545

申请日：2008-02-08

申请人： Jochen Schoenthaler ,  Stefan Wickert

发明人： Jochen Schoenthaler ,  Stefan Wickert

IPC分类号： F01N11/00

CPC分类号： F02D41/222 ,  F01N3/2066 ,  F01N2560/026 ,  F02D41/146 ,  F02D41/1463 ,  F02D41/187 ,  F02D2041/0075 ,  F02D2200/1012 ,  Y02T10/40

摘要： A method to diagnose an exhaust gas sensor disposed in the exhaust gas region of an internal combustion engine, wherein provision is made for a comparison of a measurement for at least one exhaust gas component with a measurement of the exhaust gas component, which is ascertained on the basis of an exhaust gas sensor signal, and a device to implement the method are proposed. The diagnosis is only implemented if a change in at least one operating parameter of the internal combustion engine and/or at least one parameter of the exhaust gas is detected during the running operation of the internal combustion engine. Provision is made in the diagnosis for an averaging of the measurement for at least the one exhaust gas component as well as of the measurement for the exhaust gas component, which is provided by the exhaust gas sensor. Provision is additionally made for a subsequent comparison of the two averages and for an error signal to be provided if the difference of the two averages exceeds a difference threshold value. The procedural approach allows for the diagnosis to occur without a diagnostic intervention into the operation of the internal combustion engine and without an intervention into an open-loop control, which if need be is present, for the metering of a reagent substance, which is introduced into the exhaust gas region of the internal combustion engine to convert at least one exhaust gas component.

摘要翻译： 一种用于诊断设置在内燃机的排气区域中的废气传感器的方法，其中提供用于比较至少一种废气组分的测量和排气组分的测量，所述测量被确定在 提出了排气传感器信号的基础，以及实现该方法的装置。 只有在内燃机的运行操作期间检测到内燃机的至少一个操作参数和/或废气的至少一个参数的变化时，才实现诊断。 在对排气传感器提供的至少一个废气成分的测量以及排气组分的测量的平均化进行诊断时进行了规定。 另外为两个平均值的后续比较以及两个平均值的差值超过差值阈值而提供的误差信号另外设定。 程序方法允许在没有对内燃机的操作的诊断干预的情况下进行诊断，并且不介入开环控制（如果需要的话），用于测量引入的试剂物质 进入内燃机的废气区域以转化至少一个排气组分。

公开(公告)号：US07913550B2

公开(公告)日：2011-03-29

申请号：US12028545

申请日：2008-02-08

申请人： Jochen Schoenthaler ,  Stefan Wickert

发明人： Jochen Schoenthaler ,  Stefan Wickert

IPC分类号： G01M15/10

CPC分类号： F02D41/222 ,  F01N3/2066 ,  F01N2560/026 ,  F02D41/146 ,  F02D41/1463 ,  F02D41/187 ,  F02D2041/0075 ,  F02D2200/1012 ,  Y02T10/40

摘要： A method to diagnose an exhaust gas sensor disposed in the exhaust gas region of an internal combustion engine, wherein provision is made for a comparison of a measurement for at least one exhaust gas component with a measurement of the exhaust gas component, which is ascertained on the basis of an exhaust gas sensor signal, and a device to implement the method are proposed. The diagnosis is only implemented if a change in at least one operating parameter of the internal combustion engine and/or at least one parameter of the exhaust gas is detected during the running operation of the internal combustion engine. Provision is made in the diagnosis for an averaging of the measurement for at least the one exhaust gas component as well as of the measurement for the exhaust gas component, which is provided by the exhaust gas sensor. Provision is additionally made for a subsequent comparison of the two averages and for an error signal to be provided if the difference of the two averages exceeds a difference threshold value. The procedural approach allows for the diagnosis to occur without a diagnostic intervention into the operation of the internal combustion engine and without an intervention into an open-loop control, which if need be is present, for the metering of a reagent substance, which is introduced into the exhaust gas region of the internal combustion engine to convert at least one exhaust gas component.

摘要翻译： 一种用于诊断设置在内燃机的排气区域中的废气传感器的方法，其中提供用于比较至少一种废气组分的测量和排气组分的测量，所述测量被确定在 提出了排气传感器信号的基础，以及实现该方法的装置。 只有在内燃机的运行操作期间检测到内燃机的至少一个操作参数和/或废气的至少一个参数的变化时，才实现诊断。 在对排气传感器提供的至少一个废气成分的测量以及排气组分的测量的平均化进行诊断时进行了规定。 另外为两个平均值的后续比较以及两个平均值的差值超过差值阈值而提供的误差信号另外设定。 程序方法允许在没有对内燃机的操作的诊断干预的情况下进行诊断，并且不介入开环控制（如果需要的话），用于测量引入的试剂物质 进入内燃机的废气区域以转化至少一个排气组分。

公开(公告)号：US20080148830A1

公开(公告)日：2008-06-26

申请号：US11904763

申请日：2007-09-27

申请人： Stefan Wickert ,  Jochen Schoenthaler

发明人： Stefan Wickert ,  Jochen Schoenthaler

IPC分类号： G01M15/04

CPC分类号： F02D41/222 ,  F01N2560/02 ,  F02D41/1408 ,  F02D41/1445 ,  F02D41/146 ,  Y02T10/40

摘要： A method to diagnose an exhaust gas sensor (16) disposed in an exhaust gas region (13) of an internal combustion engine (10), whereby a test is made at said sensor to determine whether a change of at least one exhaust gas component, which is detectable by the exhaust gas sensor (16), results in an expected change of the sensor signal (s_Mes), and a device for the implementation of the method are proposed. The diagnosis is only implemented if a specified change in at least one operating parameter (Md, n, agr) of the internal combustion engine (10) and/or at least one parameter (ms_Abg, NOx, ms_NOx) of the exhaust gas in the running operation of the internal combustion engine (10) are detected.The procedural approach allows for a diagnosis without a diagnostic intervention into the operation of the internal combustion engine (10) and without a diagnostic intervention into a metering control system, which if necessary is present and which controls a metering of a reagent substance into the exhaust gas region (13) of the internal combustion engine (10).

摘要翻译： 一种用于诊断设置在内燃机（10）的排气区域（13）中的废气传感器（16）的方法，由此在所述传感器处进行测试，以确定是否改变至少一个排气组分， 其可被排气传感器（16）检测到，导致传感器信号（s_Mes）的预期变化，并且提出了用于实现该方法的装置。 只有在内燃机（10）的至少一个操作参数（Md，n，agr）和/或至少一个参数（ms_Abg，NOx，ms_NOx）中的指定变化和 检测内燃机（10）的运转动作。 该程序方法允许在没有对内燃机（10）的操作的诊断干预的情况下进行诊断，并且没有对计量控制系统的诊断干预，如果需要，其存在并且控制将试剂物质计量到排气中 内燃机（10）的气体区域（13）。