DE19958384A1 - Process for detecting a faulty sensor - Google Patents
Process for detecting a faulty sensorInfo
- Publication number
- DE19958384A1 DE19958384A1 DE19958384A DE19958384A DE19958384A1 DE 19958384 A1 DE19958384 A1 DE 19958384A1 DE 19958384 A DE19958384 A DE 19958384A DE 19958384 A DE19958384 A DE 19958384A DE 19958384 A1 DE19958384 A1 DE 19958384A1
- Authority
- DE
- Germany
- Prior art keywords
- temperature
- changes
- sensor
- variable
- temperature sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2031/00—Fail safe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/08—Controlling of coolant flow the coolant being cooling-air by cutting in or out of pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2229/00—Flame sensors
- F23N2229/10—Flame sensors comprising application of periodical fuel flow fluctuations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Erkennung eines fehlerhaften Sensors nach dem Oberbegriff des Hauptanspruchs 1.The invention relates to a method for recognizing a faulty sensor according to the preamble of main claim 1.
Bei modernen Brennkraftmaschinen mit Steuergeräten für Zündung oder/und Einspritzung wird die Kühlwassertemperatur der Brennkraftmaschine mittels eines Temperatursensors gemessen und im Steuergerät zur Diagnose verwendet. Dabei wird die gemessene Temperatur mit einer rechnerisch ermittelten Modelltemperatur als Sollwert verglichen.In modern internal combustion engines with control units for ignition or / and injection is the cooling water temperature of the Internal combustion engine measured using a temperature sensor and used in the control unit for diagnosis. The measured Temperature with a calculated model temperature compared as setpoint.
Nach diesem Stand der Technik wird dabei nur dann die gemessene Temperatur als falsch erkannt, wenn die gemessene Temperatur die Modelltemperatur unterschreitet. Bei der Diagnose ist es nicht möglich, einen defekten Temperatursensor zu erkennen, der eine konstante falsche hohe Temperatur von bspw. 80°C liefert.According to this state of the art, the measured is only then Temperature recognized as wrong when the measured temperature falls below the model temperature. With the diagnosis it is not possible to detect a defective temperature sensor that provides a constant false high temperature of, for example, 80 ° C.
Aus der DE 39 90 872 C2 ist eine Failsafe-Vorrichtung für einen Temperatursensor einer Brennkraftmaschine bekannt, mit einer Diagnoseeinrichtung zur Fehlererkennung bei der Erfassung der Kühlmitteltemperatur des Motors.DE 39 90 872 C2 describes a failsafe device for one Temperature sensor of an internal combustion engine known, with a Diagnostic device for error detection when recording the Engine coolant temperature.
Dort ist eine Temperatursensorausfall-Beurteilungseinrichtung vorgesehen, die unzulässige Temperaturwerte erkennen soll. Diese Temperatursensorausfall-Beurteilungseinrichtung beurteilt den Temperatursensor als ausgefallen, wenn sich die Signale des Temperatursensors für eine vorbestimmte Zeitdauer nicht ändern. There is a temperature sensor failure assessment device provided that should recognize impermissible temperature values. This temperature sensor failure judging device judged the temperature sensor as failed if the signals from the Do not change the temperature sensor for a predetermined period of time.
Nachteil des Stands der Technik besteht darin, daß zum einen bei Vorgabe einer rechnerisch ermittelten Modelltemperatur als Sollwert bestimmte Fehler nicht erkannt werden können, wenn bspw. die gemessene Temperatur die Modelltemperatur überschreitet und auf konstant hohem Niveau stehenbleibt und zum anderen, daß bei erwarteter Zunahme der Kühlmitteltemperatur während des Betriebs des Motors innerhalb einer vorbestimmten Zeitdauer keine Änderung in der Ausgabe des Temperatursensors erfaßt wird.The disadvantage of the prior art is that, on the one hand when specifying a calculated model temperature as Setpoint certain errors cannot be detected if For example, the measured temperature is the model temperature exceeds and remains at a constantly high level and on the other hand that if the expected increase in the Coolant temperature during engine operation within a change in the output of the Temperature sensor is detected.
Die nachfolgend beschriebene Erfindung ermöglicht in vorteilhafter Weise aber auch starken Dynamikverlust des Temperatursignals zu erkennen. D. h. das Temperatursignal muß nicht zwingend konstant festhängen, um als defekt eingestuft zu werden.The invention described below enables in advantageous but also strong loss of dynamic Detect temperature signal. That is, the temperature signal must do not necessarily have to be stuck constantly to be classified as defective become.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zur Erkennung eines fehlerhaften Temperatursensorsignals einer Brennkraftmaschine anzugeben durch das das Temperatursensorsignal als korrekt arbeitend erkannt wird.The present invention is therefore based on the object a method of detecting a faulty one Specify temperature sensor signal of an internal combustion engine by which the temperature sensor signal works correctly is recognized.
Diese Aufgabe wird erfindungsgemäß durch den kennzeichnenden Teil des Hauptanspruchs 1 gelöst.This object is achieved by the characterizing Part of the main claim 1 solved.
Das erfindungsgemäße Verfahren hat den wesentlichen Vorteil, daß ein als defekt erkannter Temperatursensor nicht irrtümlich als defekt erkannt wird und daß aufgrund der Störgrößenaufschaltung eine besonders hohe Zuverlässigkeit erzielt wird. The method according to the invention has the essential advantage that a temperature sensor recognized as defective is not erroneous is recognized as defective and that due to the Disturbance control a particularly high reliability is achieved.
Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen. Ein Ausführungsbeispiel ist in der einzigen Figur dargestellt.Further advantageous embodiments of the invention result from the subclaims. An embodiment is in the single figure.
Die Figur zeigt ein Flußdiagramm eines Ausführungsbeispieles der Erfindung.The figure shows a flow chart of an embodiment the invention.
In der Figur ist ein Ausführungsbeispiel eines Verfahrens zur Detektion und Beeinflussung des Temperatursignales einer Brennkraftmaschine dargestellt, das im Steuergerät der Brennkraftmaschine abläuft. Das Steuergerät umfaßt die erforderlichen Rechen-Speicher und Zeitmeßmittel.In the figure is an embodiment of a method for Detection and influencing of the temperature signal Internal combustion engine shown in the control unit of the Internal combustion engine expires. The control unit includes the required computing memory and time measuring means.
Das in der Figur dargestellte Schema geht von einem ersten Programmschritt 1 aus, durch den der Beginn des Verfahrens festgelegt ist. Im Programmschritt 2 wird die Temperatur des Kühlmittels der Brennkraftmaschine gemessen. Im Programmschritt 3 ist eine Verzweigung vorgesehen, derart, daß wenn sich die Temperatur innerhalb eines Zeitfensters ausreichend schnell ändert, zum Programm 7 gesprungen wird und der Temperatursensor als in Ordnung erkannt wird. Falls sich im Programmschritt 3 die Temperatur nicht ändert, bzw. nur sehr langsam ändert, wird im Programmschritt 4 eine Störgröße aufgeschaltet. Als Störgrößenaufschaltung kann z. B. das Ein- oder Ausschalten des Motorlüfters oder/und des Thermostatventils oder/und der Kühlmittelpumpe fungieren. Im Programmschritt 5 wird in einer Verzweigung abgefragt, ob sich die Temperatur ändert. Falls sich die Temperatur ausreichend ändert, wird entsprechend einem applizierten Schwellwert der Temperatursensor als in Ordnung erkannt im Programmschritt 7. Falls sich die Temperatur nicht ändert bzw. nur unwesentlich ändert, wird der Temperatursensor im Programmschritt 6 als defekt erkannt und es erfolgt eine Fehlanzeige oder das Steuergerät leitet einen Notlauf ein. Programmschritt 8 ist das Ende des Verfahrens.The diagram shown in the figure is based on a first program step 1 , by which the start of the method is determined. In program step 2 , the temperature of the coolant of the internal combustion engine is measured. A branch is provided in program step 3 , such that if the temperature changes sufficiently quickly within a time window, the program jumps to program 7 and the temperature sensor is recognized as OK. If the temperature does not change in program step 3 or changes only very slowly, a disturbance variable is applied in program step 4 . As a feedforward control z. B. Activate or deactivate the engine fan and / or the thermostatic valve and / or the coolant pump. In program step 5 , a branch is queried as to whether the temperature changes. If the temperature changes sufficiently, the temperature sensor is recognized as OK in accordance with an applied threshold value in program step 7 . If the temperature does not change or changes only insignificantly, the temperature sensor is recognized as defective in program step 6 and an error message is displayed or the control unit initiates an emergency operation. Program step 8 is the end of the process.
Die Temperaturvermessung erfolgt mittels eines Sensors, der dem Kühlwasser ausgesetzt wird oder in unmittelbarer Nähe des Kühlers angeordnet ist und dessen Ausgangssignal dem Steuergerät zugeführt wird.The temperature is measured using a sensor that Cooling water is exposed or in the immediate vicinity of the Cooler is arranged and the output signal of the Control unit is fed.
Die Erfindung ist nicht nur auf das Ausführungsbeispiel eingeschränkt, sondern kann generell zur Fehlerkennung eingesetzt werden, wobei Voraussetzung ist, daß unter vorgegebenen Umständen eine Störgröße zugeschaltet wird, die innerhalb eines auszuwertenden Zeitintervalls zu einer Änderung der Meßgröße führt. Bei Nichtauftreten der Änderung nach Zuschalten der Störgröße wird auf eine Fehlfunktion erkannt und angezeigt. Die Anwendung erfolgt in einer Auswerteeinrichtung. Die Aufschaltung der Störgröße erfolgt überlicherweise zu Zeiten, zu denen sich die Meßgröße nicht ändert. Beim Ausführungsbeispiel also, bei Bedingungen, bei denen die Motortemperatur etwa konstant ist, z. B. bei Leerlauf oder bei Fahrzeuggeschwindigkeit gleich Null. Wird unter diesen Bedingungen erkannt, daß die Temperatur konstant bleibt und sich das Ausgangssignal des Sensors nicht ändert, wird die Störgrößenaufschaltung durchgeführt.The invention is not limited to the exemplary embodiment restricted, but can generally be used for error detection are used, provided that under a disturbance variable is switched on in the specified circumstances change within a time interval to be evaluated of the measured variable. If the change does not occur after Switching on the disturbance variable is detected on a malfunction and displayed. The application takes place in an evaluation device. The disturbance variable is usually activated Times when the measured variable does not change. At the Embodiment, therefore, in conditions where the Engine temperature is approximately constant, e.g. B. at idle or at Vehicle speed is zero. Will be among these Conditions recognized that the temperature remains constant and the output signal of the sensor does not change, the Fault lock-up carried out.
Während der Störgrößenaufschaltung wird ständig die erfaßte Meßgröße (Temperatur) auf Änderung überprüft. Zusätzlich wird vom Steuergerät laufend überprüft, ob sich die Fahrzeugbetriebsbedingungen bspw. Last, Drehzahl, Umgebungstemperatur usw. während der Diagnose ändern. Dieser Einfluß auf die zu erwartende Änderung der Meßgröße (Temperatur) wird berücksichtigt. Dabei kann bei erkannter Änderung der Fahrzeugbetriebsbedingungen eine Berücksichtigung so erfolgen, daß eine rechnerische ermittelte Modelltemperatur mit berücksichtigt wird. Dabei ist wesentlich, daß das Modell neben den Änderungen der Fahrzeugbetriebsbedingungen auch die Störgrößenaufschaltung berücksichtigt.During the feedforward control, the detected is constantly Measured variable (temperature) checked for change. In addition, the control unit continuously checks whether the Vehicle operating conditions e.g. load, speed, Change ambient temperature etc. during diagnosis. This Influence on the expected change in the measured variable (Temperature) is taken into account. In the case of detected Change in vehicle operating conditions is taken into account done so that a calculated model temperature is also taken into account. It is essential that the model in addition to the changes in the vehicle operating conditions also the Disturbance feedforwarding taken into account.
Die erfindungsgemäße Fehlererkennung kann gleich nach dem Einschalten ablaufen und danach nach vorgebbaren Zeitintervallen wiederholt werden. Insbesondere bei Verdacht auf Fehler sollte die Fehlererkennung so oft wiederholt werden bis eindeutig feststeht ob ein Fehler aufgetreten ist.The error detection according to the invention can be done immediately after Switch on expire and then after predefinable Time intervals are repeated. Especially if you suspect it error detection should be repeated as often as possible until it is clear whether an error has occurred.
Wird nach Aufschalten einer Störgröße keine Änderung der Meßgröße erkannt, wird bei einer Ausgestaltung der Erfindung eine zweite Störgröße aufgeschaltet und die zeitliche Reaktion überprüft. Ändert sich die Meßgröße erst nach der zweiten Störgrößenaufschaltung, wird der Sensor als in Ordnung befunden und die erste Störgröße bzw. das entsprechende Aggregat als defekt angesehen.If a disturbance variable is not applied, the Measured variable is recognized in one embodiment of the invention a second disturbance variable and the time response checked. The measured variable only changes after the second Feedforward control, the sensor is found to be in order and the first disturbance variable or the corresponding aggregate as viewed defective.
Eine weitere Ausgestaltung der Erfindung besteht darin, daß die Diagnose in der Nachlaufphase einer Brennkraftmaschine erfolgt und der dann gegebenenfalls erkannte Fehler in einen Speicher des Steuergeräts eingetragen wird, so daß er beim Neustart gleich angezeigt werden kann.Another embodiment of the invention is that the Diagnosis takes place in the after-running phase of an internal combustion engine and the error, if any, then recognized in a memory of the control unit is entered so that it when restarting can be displayed immediately.
Claims (10)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19958384A DE19958384A1 (en) | 1999-12-03 | 1999-12-03 | Process for detecting a faulty sensor |
EP00993273A EP1187977A2 (en) | 1999-12-03 | 2000-11-22 | Method for identifying a faulty sensor |
JP2001542677A JP2003515694A (en) | 1999-12-03 | 2000-11-22 | How to detect erroneous sensors |
KR1020017009735A KR20020005583A (en) | 1999-12-03 | 2000-11-22 | Method for identifying a faulty sensor |
PCT/DE2000/004119 WO2001040636A2 (en) | 1999-12-03 | 2000-11-22 | Method for identifying a faulty sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19958384A DE19958384A1 (en) | 1999-12-03 | 1999-12-03 | Process for detecting a faulty sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19958384A1 true DE19958384A1 (en) | 2001-06-07 |
Family
ID=7931340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19958384A Ceased DE19958384A1 (en) | 1999-12-03 | 1999-12-03 | Process for detecting a faulty sensor |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1187977A2 (en) |
JP (1) | JP2003515694A (en) |
KR (1) | KR20020005583A (en) |
DE (1) | DE19958384A1 (en) |
WO (1) | WO2001040636A2 (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10329038B3 (en) * | 2003-06-27 | 2005-02-24 | Audi Ag | Monitoring motor vehicle part temperature sensor operability, involves checking for defined minimum temperature change over defined period of measurement with starting temperature as reference value |
DE102005019588A1 (en) * | 2005-04-27 | 2006-11-09 | BSH Bosch und Siemens Hausgeräte GmbH | Method for monitoring a temperature-dependent resistance, in particular in a tumble dryer |
DE102006011138A1 (en) * | 2006-01-16 | 2007-07-19 | Conti Temic Microelectronic Gmbh | Assembly functional testing method for motor vehicle, involves supplying error condition parameters corresponding to defective function of assembly and fed in point of time, and testing parameters whether error is recognized based on rule |
DE102005003251B4 (en) * | 2004-02-18 | 2008-11-27 | General Motors Corp., Detroit | A method of testing and determining the irrationality of an engine cooling temperature sensor in a vehicle |
WO2009106181A1 (en) * | 2008-02-26 | 2009-09-03 | Robert Bosch Gmbh | Diagnostic method and drive control |
DE102009057586A1 (en) * | 2009-12-09 | 2011-06-16 | Continental Automotive Gmbh | Method for monitoring a coolant temperature sensor of a motor vehicle and control device |
DE102010001618A1 (en) * | 2010-02-05 | 2011-08-11 | Robert Bosch GmbH, 70469 | Method for diagnosing thermostat in air-cooled refrigerant circuit of combustion engine in motor car, involves switching on fan temporarily during diagnostic process before measured temperature reaches predeterminable temperature |
DE10131760B4 (en) * | 2001-06-30 | 2012-06-21 | Robert Bosch Gmbh | Method for testing a sensor |
DE102011018864A1 (en) | 2011-04-28 | 2012-10-31 | Audi Ag | Method for starting internal combustion engine after rest break, involves setting amount of air and fuel supplied to engine as function of cooling water temperature or reference temperature |
DE102011088409B3 (en) * | 2011-12-13 | 2013-03-14 | Continental Automotive Gmbh | Method and device for monitoring a temperature sensor |
DE102005048313B4 (en) * | 2005-10-06 | 2013-10-10 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Method for diagnosing the condition of a thermostat |
DE102005007105B4 (en) * | 2004-02-25 | 2015-01-08 | Scania Cv Ab | Monitoring of coolant temperature sensors |
DE102005007324B4 (en) * | 2004-02-25 | 2015-01-08 | Scania Cv Ab | Monitoring engine coolant temperature sensors |
CN106574882A (en) * | 2014-08-28 | 2017-04-19 | 罗伯特·博世有限公司 | Control device for a cooling device and method for testing a cooling device |
DE102016211485A1 (en) * | 2016-06-27 | 2017-12-28 | Robert Bosch Gmbh | Sensor unit and method for functional testing of a sensor of the sensor unit |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006233473A (en) * | 2005-02-23 | 2006-09-07 | Matsushita Electric Ind Co Ltd | Toilet seat apparatus |
JP4963052B2 (en) * | 2006-09-22 | 2012-06-27 | Udトラックス株式会社 | Exhaust temperature sensor abnormality detection device |
JP2010101860A (en) * | 2008-10-27 | 2010-05-06 | Mitsubishi Motors Corp | Failure diagnosis device of mechanism loaded on vehicle |
KR102452470B1 (en) * | 2018-05-15 | 2022-10-11 | 현대자동차주식회사 | Fault diagnosis method of coolant temperature sensor for vehicles |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6432443U (en) * | 1987-08-20 | 1989-03-01 | ||
DE3990872C3 (en) | 1988-07-29 | 1997-10-09 | Mitsubishi Motors Corp | Failsafe device for a temperature sensor |
US5235527A (en) * | 1990-02-09 | 1993-08-10 | Toyota Jidosha Kabushiki Kaisha | Method for diagnosing abnormality of sensor |
GB9402018D0 (en) * | 1994-02-02 | 1994-03-30 | British Gas Plc | Apparatus for detecting faults in a combustion sensor |
DE19612212B4 (en) * | 1995-03-31 | 2005-12-08 | Denso Corp., Kariya | Diagnostic device for an air / fuel ratio sensor |
JP3116781B2 (en) * | 1995-09-11 | 2000-12-11 | トヨタ自動車株式会社 | Radiator cooling fan system abnormality detector |
JP3718895B2 (en) * | 1996-02-23 | 2005-11-24 | 株式会社ノーリツ | Hot water storage temperature sensor failure detection device for water heater |
JP3675108B2 (en) * | 1996-06-24 | 2005-07-27 | トヨタ自動車株式会社 | Fault diagnosis device for water temperature sensor |
JP3204108B2 (en) * | 1996-08-23 | 2001-09-04 | トヨタ自動車株式会社 | Air temperature sensor abnormality detection device |
JPH11326137A (en) * | 1998-05-19 | 1999-11-26 | Hitachi Ltd | Engine controller |
-
1999
- 1999-12-03 DE DE19958384A patent/DE19958384A1/en not_active Ceased
-
2000
- 2000-11-22 KR KR1020017009735A patent/KR20020005583A/en not_active Application Discontinuation
- 2000-11-22 JP JP2001542677A patent/JP2003515694A/en active Pending
- 2000-11-22 EP EP00993273A patent/EP1187977A2/en not_active Withdrawn
- 2000-11-22 WO PCT/DE2000/004119 patent/WO2001040636A2/en not_active Application Discontinuation
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10131760B4 (en) * | 2001-06-30 | 2012-06-21 | Robert Bosch Gmbh | Method for testing a sensor |
DE10329038B3 (en) * | 2003-06-27 | 2005-02-24 | Audi Ag | Monitoring motor vehicle part temperature sensor operability, involves checking for defined minimum temperature change over defined period of measurement with starting temperature as reference value |
DE102005003251B4 (en) * | 2004-02-18 | 2008-11-27 | General Motors Corp., Detroit | A method of testing and determining the irrationality of an engine cooling temperature sensor in a vehicle |
DE102005007324B4 (en) * | 2004-02-25 | 2015-01-08 | Scania Cv Ab | Monitoring engine coolant temperature sensors |
DE102005007105B4 (en) * | 2004-02-25 | 2015-01-08 | Scania Cv Ab | Monitoring of coolant temperature sensors |
US7748897B2 (en) | 2005-04-27 | 2010-07-06 | Bsh Bosch Und Siemens Hausgeraete Gmbh | Method for monitoring a temperature-dependent resistor, particularly in a clothes dryer |
DE102005019588A1 (en) * | 2005-04-27 | 2006-11-09 | BSH Bosch und Siemens Hausgeräte GmbH | Method for monitoring a temperature-dependent resistance, in particular in a tumble dryer |
DE102005048313B4 (en) * | 2005-10-06 | 2013-10-10 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Method for diagnosing the condition of a thermostat |
DE102006011138B4 (en) | 2006-01-16 | 2022-09-29 | Continental Automotive Technologies GmbH | Process for functional testing of an assembly |
DE102006011138A1 (en) * | 2006-01-16 | 2007-07-19 | Conti Temic Microelectronic Gmbh | Assembly functional testing method for motor vehicle, involves supplying error condition parameters corresponding to defective function of assembly and fed in point of time, and testing parameters whether error is recognized based on rule |
WO2009106181A1 (en) * | 2008-02-26 | 2009-09-03 | Robert Bosch Gmbh | Diagnostic method and drive control |
US8538623B2 (en) | 2009-12-09 | 2013-09-17 | Continental Automotive Gmbh | Method for monitoring a coolant temperature sensor of a motor vehicle and controller |
DE102009057586A1 (en) * | 2009-12-09 | 2011-06-16 | Continental Automotive Gmbh | Method for monitoring a coolant temperature sensor of a motor vehicle and control device |
DE102009057586B4 (en) * | 2009-12-09 | 2016-02-18 | Continental Automotive Gmbh | A method for monitoring a coolant temperature sensor of a motor vehicle with an internal combustion engine and an additional heater and control device |
DE102010001618A1 (en) * | 2010-02-05 | 2011-08-11 | Robert Bosch GmbH, 70469 | Method for diagnosing thermostat in air-cooled refrigerant circuit of combustion engine in motor car, involves switching on fan temporarily during diagnostic process before measured temperature reaches predeterminable temperature |
DE102011018864A1 (en) | 2011-04-28 | 2012-10-31 | Audi Ag | Method for starting internal combustion engine after rest break, involves setting amount of air and fuel supplied to engine as function of cooling water temperature or reference temperature |
WO2013087476A1 (en) | 2011-12-13 | 2013-06-20 | Continental Automotive Gmbh | Method and device for monitoring a temperature sensor |
DE102011088409B3 (en) * | 2011-12-13 | 2013-03-14 | Continental Automotive Gmbh | Method and device for monitoring a temperature sensor |
CN106574882A (en) * | 2014-08-28 | 2017-04-19 | 罗伯特·博世有限公司 | Control device for a cooling device and method for testing a cooling device |
DE102016211485A1 (en) * | 2016-06-27 | 2017-12-28 | Robert Bosch Gmbh | Sensor unit and method for functional testing of a sensor of the sensor unit |
Also Published As
Publication number | Publication date |
---|---|
EP1187977A2 (en) | 2002-03-20 |
JP2003515694A (en) | 2003-05-07 |
WO2001040636A2 (en) | 2001-06-07 |
KR20020005583A (en) | 2002-01-17 |
WO2001040636A3 (en) | 2001-12-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19958384A1 (en) | Process for detecting a faulty sensor | |
DE102004008142B4 (en) | Fault diagnostic device for an engine cooling water temperature sensor | |
EP1039287B1 (en) | Method for detecting of exhaust gas degrading and catalysator destroying misfiring of a combustion engine | |
EP0795077B1 (en) | Process and device for monitoring a fuel metering system | |
EP1165948B1 (en) | Method for recognition of cooling system faults in a motor vehicle engine | |
DE102005037717B3 (en) | Method of treating or identifying faults in an exterior temperature sensor of a vehicle based on temperature gradient | |
EP1573188B1 (en) | Device and method for identifying defects in a fuel injection system | |
WO2004040104A1 (en) | Method for testing at least three sensors, which detect a measurable variable for an internal combustion engine | |
DE102005049069A1 (en) | Internal combustion engine operating method, involves determining reference value of air ratio when fuel injection of cylinder is deactivated, and activating fuel injection of cylinder | |
DE102011089503A1 (en) | Diagnostic procedure for particulate filter arranged in effluent stream of combustion engine, involves comparing detected particle mass concentration with selected particle mass concentration threshold value | |
DE102004048136A1 (en) | Method for diagnosing a nitrogen oxide sensor arranged in the exhaust gas region of an I.C. engine comprises carrying out the diagnosis after switching off the engine in the after-running of a control device | |
DE10341454A1 (en) | Method for checking at least three sensors that detect a measurement variable in the area of an internal combustion engine | |
EP1274931A1 (en) | Method for recognizing and correcting errors | |
DE102009057735A1 (en) | Differential pressure sensor frozen state detection method for exhaust gas tract of motor vehicle, involves using value of sensor signal if it is determined that curing condition is fulfilled to indicate sensor is not frozen | |
DE4203247C2 (en) | Misfire monitoring device for an internal combustion engine | |
DE10329039B3 (en) | Function checking method for temperature sensor associated with automobile component using comparison of temperature values provided by temperature sensor and by second temperature measuring device | |
DE19601393A1 (en) | Assessment of abnormalities in IC engine crankshaft angle sensor | |
WO2017102067A1 (en) | Method for checking the association of structure-borne noise sensors with cylinders of an internal combustion engine | |
DE10022533B4 (en) | Fail-safe device and failsafe method of an engine | |
DE10040254B4 (en) | Method for diagnosing a component of an internal combustion engine | |
DE102017004895B4 (en) | Method for monitoring a cylinder pressure sensor | |
DE102011088919B3 (en) | Method for checking functionality of two controllable valves of cooling system for engine of vehicle, involves detecting valve which is in closed state to be defective when other valve is in opened state | |
DE10014752B4 (en) | Method and device for monitoring a thermostatic valve | |
DE102005004741A1 (en) | Method and device for diagnosing sensors of an air supply of an internal combustion engine | |
WO2006050844A1 (en) | Secondary air diagnosis in an internal combustion engine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8131 | Rejection |