EP0975984B1 - Diagnose elektrischer verbraucher in einem kraftfahrzeug - Google Patents
Diagnose elektrischer verbraucher in einem kraftfahrzeug Download PDFInfo
- Publication number
- EP0975984B1 EP0975984B1 EP99906060A EP99906060A EP0975984B1 EP 0975984 B1 EP0975984 B1 EP 0975984B1 EP 99906060 A EP99906060 A EP 99906060A EP 99906060 A EP99906060 A EP 99906060A EP 0975984 B1 EP0975984 B1 EP 0975984B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- motor vehicle
- electrical
- loads
- recorded
- load
- 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.)
- Expired - Lifetime
Links
- 238000003745 diagnosis Methods 0.000 title description 6
- 238000000034 method Methods 0.000 claims description 20
- 238000011156 evaluation Methods 0.000 claims description 10
- 239000013598 vector Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 5
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- 230000000977 initiatory effect Effects 0.000 claims 2
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- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
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- 230000035945 sensitivity Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
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- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
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- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
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Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
Definitions
- the invention relates to the diagnosis of electrical consumers by evaluating the battery voltage.
- DE 44 22 149 describes how, for example, the Functionality of a lamp in normal operation of the Motor vehicle by evaluating the vehicle electrical system voltage is verifiable.
- the vehicle electrical system voltage when entering and / or Switching off individual consumers are in normal operation of the Motor vehicle interference superimposed by pressing caused by other consumers.
- DE 44 22 149 provides a remedy a modeling of the vehicle electrical system voltage during operation and / or a mathematical folding of the measured vehicle electrical system voltage with a sudden signal. Out of that one Independence from DC components and a reduced sensitivity to high-frequency interference, how they occur in the operation of the vehicle result.
- the object of the invention is to provide a Electrical system voltage evaluation for checking electrical Consumers in a motor vehicle whose Interference sensitivity further reduced and their evaluation is further simplified. This makes the Reliability of the evaluation simplified.
- the essence of the invention is various to control electrical consumers when the influences other consumers on vehicle voltage changes can be neglected.
- control unit overrun Motor vehicles whose engine using a control unit is regulated, have electronic assemblies that not only during the operation of the motor vehicle but even after the engine has been switched off, i.e. after opening of the ignition switch must be supplied with voltage. It is usually necessary to do this Power supply only for a certain period of time after stopping the engine. This Period is generally referred to as control unit overrun.
- connection of an electrical consumer in the Control unit overrun leads to a characteristic Change in the electrical system voltage by the electrical Properties of the supply line and the consumer (ohmic, capacitive and / or inductive load) and the is evaluated according to the invention for diagnosis.
- alternative other electrical parameters e.g. the current change can be measured.
- the consumers to be diagnosed are e.g. Valves like the exhaust gas recirculation valve, the tank ventilation valve, the Injectors or other units like that Secondary air pump, fan, ignition coils, etc. conceivable.
- This By default, consumers are powered by the engine control unit driven.
- the procedure can be applied to all Consumers, for example on electric heaters (for Catalyst, exhaust gas probe, etc.) and the lighting system be expanded.
- the Consumer can be controlled independently.
- the measurement signals can now through different evaluation methods respectively Signal processing algorithms are processed further. It is about typical signal curves of intact and typical courses of defective aggregates differ.
- a Control of individual consumers with the engine running and switched off generator and switched off further Consumers.
- the control is advantageously carried out in push mode with injection and ignition switched off.
- the battery voltage curve is then not Interferences from the generator or injection and / or Ignition output stages falsified.
- Figure 1 shows the basic structure of a Implementation of a first embodiment of the Invention suitable device.
- Figure 2 shows the course of the voltage, as in the Structure of Figure 1 when opening and closing the switch 2 occurs.
- Figure 3 discloses a flow diagram of the first Embodiment of the method according to the invention.
- Figure 4 shows the basic structure of a Implementation of a second embodiment of the Invention suitable device.
- Figure 5 discloses a flow diagram of the second Embodiment of the method according to the invention.
- the 1 in Figure 1 denotes an electrical Consumer who with closed switch 2 with a Vehicle battery 3 is connected. Those in the circuit Consumer 1, switch 2 and battery 3 prevailing On-board electrical system voltage is detected with the voltmeter 4 and the Control unit 5 supplied for evaluation. The control unit 5 controls switch 2. Depending on the result of the evaluation an error lamp 6 can be activated by the control device 5.
- the voltage curve is characterized by the electrical properties of the supply line and the consumer.
- the voltage curve according to Figure 2 results from an on-board electrical system source voltage of 12 V, an internal resistance of the voltage source of 20 m ⁇ , an ohmic lead resistance of 58 m ⁇ , an inductive lead resistance of 60 ⁇ as well as the connection of a powerful ohmic consumer with a 2 ⁇ resistor to a low-power consumer of 24 ⁇ resistance.
- the lead resistances mentioned represent long leads in a motor vehicle electrical system. They correspond to a line with a length of 5 m and a cross section of 1.5 m 2 .
- Step 3.2 After switching off the engine in step 3.1 Step 3.2 all electrical consumers except that Control unit 5 itself turned off. If in Control unit overrun functions such as free burning of the Hot wire air mass meter take place, its end awaited. Step 3.3 switches individual consumers detached from their destination in normal operation Diagnostic purposes on and off. For example Injectors, ignition coils, exhaust gas recirculation valves Tank vent valve, a secondary air pump, electric Fans, electric heaters, for example for Flue gas probes or the lighting system operated briefly become.
- Threshold values of approx. 8 V for switching on and 50V for the Suitable for switching off.
- the reference threshold of 8 volts not reached when switched on is with large Probability of an electrical defect, e.g. one Interruption of the supply line.
- step 3.4 he follows a recording of the voltage values during the switching operations. For example, peak values or several Measured values showing the time course of the voltage change reflect, be grasped.
- Step 3.5 is for Comparison of the detected values with predetermined ones Reference values.
- Threshold values for comparison with measuring peak values or also stored reference curves in question.
- Curves can, for example, consist of n in succession an n-dimensional vector is calculated become an n-dimensional reference vector corresponds.
- the length of the difference vector i.e. the The distance between the two vectors must be for a functional consumer also exceed a threshold.
- Step 3.6 the display and / or storage of the Error information.
- Error lamp 6 is used for the display Storage in the control unit 5 enables statistical Validation of the diagnostic result. So it can make sense be the error lamp only when the switch on the same error and also with repeated Failure to delete the error.
- Number 7 represents a generator with excitation inductances 8.
- the generator can be disconnected from the electrical system.
- this is made possible by a switch 9 which is switched from Control unit 5 can be operated.
- Switch 9 will opened when a means 11 for detecting a Sliding operating state of the internal combustion engine 10 Push operation signals.
- Push operation is, for example, with Driving a car downhill when the internal combustion engine is off the wheels are driven. For example, it can Falling below a predetermined lower value for the Position of a power actuator of the engine detected become.
- switch 16 is opened, which the Ignition and / or injection output stages 14 and 15 from the vehicle electrical system separates. This deactivates the igniters 12 and Fuel injectors 13 in overrun and prevents interference from these components in the Board supply voltage.
- Fig. 4 b shows with a mechanical or electrical Coupling 17 between generator 7 and internal combustion engine 10 another way of interference coupling of the generator to prevent on-board electrical system voltage.
- the mechanical adhesion in Push operation interrupted by opening the clutch 17 be so that the generator is not driven.
- the Interruption of the flow of power is an alternative to open the switch 9 in the power supply Pathogen inductances.
- step 5.1 checks whether there is a push mode.
- step 5.2 the switch-off is positive the generator via mechanical decoupling or opening the Switch 9 in the excitation circuit of the generator and that Switching off electrical consumers, especially of Injection and ignition output stages.
- step 5.2 follow the steps 3.3 already explained until 3.6. In other words: it is switched on individual consumer to be checked, the inclusion of Voltage and / or current values, the comparison of the recorded values with reference values as well as displaying and / or storing errors depending on the Comparison result.
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)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Description
Claims (12)
- Verfahren zur Überprüfung elektrischer Verbraucher in einem Kraftfahrzeugdurch Auswerten einer elektrischen Größe im Bordnetz des Kraftfahrzeugesbei Betriebszustandsänderungen des Verbrauchers,die in besonderen Betriebszuständen des Kraftfahrzeugeslosgelöst von ihrer Bestimmung im Normalbetriebvom Steuergerät ausgelöst werden.
- Verfahren nach Anspruch 1, gekennzeichnet durch den Steuergerätenachlauf nach dem Abstellen des Kraftfahrzeuges als besonderer Betriebszustand.
- Verfahren nach Anspruch 1, gekennzeichnet durch eine Abschaltung von wenigstens einer der Funktionen Zündung oder Einspritzung eines Verbrennungsmotors des Kraftfahrzeuges und/oder Abschaltung eines vom Verbrennungsmotors angetriebenen elektrischen Generators.
- Verfahren nach einem der vorhergehenden Ansprüche, gekennzeichnet durch seine Anwendung auf Verbraucher, die im Normalbetrieb des Kraftfahrzeuges üblicherweise vom Steuergerät angesteuert werden.
- Verfahren nach Anspruch 4, gekennzeichnet durchVentile, wie das Abgasrückführventil, das Tankentlüftungsventil, die Einspritzventile odersonstige Aggregate wie die Sekundärluftpumpe, Lüfter, Zündspulen, elektrische Katalysator und/oder Abgassondenheizungen als elektrische Verbraucher.
- Verfahren nach Anspruch 1, gekennzeichnet durch seine Anwendung auf weitere unabhängig von anderen Verbrauchern ansteuerbare Verbraucher, die üblicherweise nicht durch das Steuergerät betätigt werden, wie die Lichtanlage.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die eine Spannung oder ein Strom beim An- und/oder Ausschalten des Verbrauchers aufgenommen und mit wenigstens einem vorbestimmten Referenzwert verglichen wird.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß Spitzenwerte oder auch mehrere Meßwerte, die den zeitlichen Verlauf der Spannungsänderung widerspiegeln, erfaßt werden und mit Referenzschwellwerten oder Referenzkurven verglichen werden.
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß die aufgenommenen Werte durch verschiedene Auswerteverfahren beziehungsweise Signalverarbeitungsalgorithmen weiterverarbeitet werden.
- Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß aus n zeitlich hintereinander aufgenommenen Meßwerten ein n-dimensionaler Vektor berechnet werden, der zu einem n-dimensionalen Referenzvektor korrespondiert und daß die Länge des Differenzvektors, also der Abstand beider Vektoren mit einem Schwellwert verglichen wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß ein erkannter Fehler angezeigt und/oder abgespeichert wird.
- Vorrichtung zur Überprüfung elektrischer Verbraucher in einem Kraftfahrzeug mitMitteln (4, 5) zum Erfassen und Auswerten einer elektrischen Größe im Bordnetz des Kraftfahrzeuges mit einem elektrischen Generatorwobei die elektrische Größe als Reaktion auf die Auslösung des Verbrauchers erfaßt und ausgewertet wird und wobei die Auslösung des Verbrauchers in besonderen Betriebszuständen des Kraftfahrzeugeslosgelöst von der Zweckbestimmung des Verbrauchers im Normalbetrieb erfolgt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19801627 | 1998-01-17 | ||
DE1998101627 DE19801627C1 (de) | 1998-01-17 | 1998-01-17 | Diagnose elektrischer Verbraucher in einem Kraftfahrzeug |
PCT/DE1999/000105 WO1999036794A1 (de) | 1998-01-17 | 1999-01-18 | Diagnose elektrischer verbraucher in einem kraftfahrzeug |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0975984A1 EP0975984A1 (de) | 2000-02-02 |
EP0975984B1 true EP0975984B1 (de) | 2004-08-11 |
Family
ID=7854902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99906060A Expired - Lifetime EP0975984B1 (de) | 1998-01-17 | 1999-01-18 | Diagnose elektrischer verbraucher in einem kraftfahrzeug |
Country Status (5)
Country | Link |
---|---|
US (1) | US6122576A (de) |
EP (1) | EP0975984B1 (de) |
JP (1) | JP4443635B2 (de) |
DE (2) | DE19801627C1 (de) |
WO (1) | WO1999036794A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3758022B2 (ja) * | 1999-12-27 | 2006-03-22 | 三菱自動車工業株式会社 | 車両用電装機器の強制駆動装置 |
DE10009770B4 (de) * | 2000-03-01 | 2004-11-18 | Voith Turbo Gmbh & Co. Kg | Elektronische Steuervorrichtung für ein Kraftfahrzeug und Datensicherungsverfahren hierfür |
JP4124729B2 (ja) * | 2001-08-15 | 2008-07-23 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 短時間使用可能なエネルギーを形成することによって搭載電源回路網を安定化する方法 |
FR2829310B1 (fr) * | 2001-09-06 | 2004-09-24 | Peugeot Citroen Automobiles Sa | Procede et dispositif de controle d'organes electriques a bord d'un vehicule |
DE102004030955A1 (de) * | 2004-06-26 | 2006-01-12 | Adam Opel Ag | Verfahren zum Freibrennen von elektrischen Kontakten einer Messvorrichtung |
DE102004053953A1 (de) * | 2004-11-09 | 2006-05-11 | Daimlerchrysler Ag | Prüfverfahren für eine Fahrzeugelektronik |
JP4108712B2 (ja) * | 2006-02-17 | 2008-06-25 | 三菱電機株式会社 | 自動車用燃料残量検出装置 |
DE102011103172A1 (de) * | 2011-06-01 | 2012-12-06 | Lucas Automotive Gmbh | Verfahren und Vorrichtung zum Ermitteln eines parasitären Widerstands für ein Kraftfahrzeug-Steuergerät |
DE102014018640B3 (de) * | 2014-12-13 | 2016-03-03 | Audi Ag | Verfahren zur elektrischen Widerstandsmessung im Kraftfahrzeug und Kraftfahrzeug |
DE102019203927A1 (de) * | 2019-03-22 | 2020-09-24 | Robert Bosch Gmbh | Verfahren zur Bordnetzdiagnostik |
CN114251157A (zh) * | 2021-12-24 | 2022-03-29 | 潍柴动力股份有限公司 | 一种油气分离器管路、诊断油气分离器故障的方法及装置 |
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US4207611A (en) * | 1978-12-18 | 1980-06-10 | Ford Motor Company | Apparatus and method for calibrated testing of a vehicle electrical system |
KR910003809Y1 (ko) * | 1987-03-31 | 1991-06-03 | 미쓰비시전기 주식회사 | 자기진단용 다기능 테스터 |
GB2210999B (en) * | 1987-10-09 | 1992-04-29 | Fuji Heavy Ind Ltd | Diagnostic system for a motor vehicle |
DE3832123A1 (de) * | 1987-10-09 | 1989-04-27 | Fuji Heavy Ind Ltd | Diagnosesystem fuer ein kraftfahrzeug |
JPH0830672B2 (ja) * | 1987-12-11 | 1996-03-27 | 富士重工業株式会社 | 車輌診断装置 |
JPH0718779B2 (ja) * | 1988-02-16 | 1995-03-06 | 富士重工業株式会社 | 車輌診断装置 |
JPH0776725B2 (ja) * | 1988-02-18 | 1995-08-16 | 富士重工業株式会社 | 車輌診断装置 |
JPH0776726B2 (ja) * | 1988-02-18 | 1995-08-16 | 富士重工業株式会社 | 車輌診断装置 |
JPH0776724B2 (ja) * | 1988-02-18 | 1995-08-16 | 富士重工業株式会社 | 車輌診断装置 |
JPH079388B2 (ja) * | 1988-02-29 | 1995-02-01 | 富士重工業株式会社 | 車輌診断システム |
DE4026232C2 (de) * | 1990-08-18 | 2003-09-04 | Bosch Gmbh Robert | Einrichtung zur Überwachung eines Drehzahlgebers |
US5809437A (en) * | 1995-06-07 | 1998-09-15 | Automotive Technologies International, Inc. | On board vehicle diagnostic module using pattern recognition |
US5506773A (en) * | 1992-08-11 | 1996-04-09 | Nippondenso Co., Ltd. | Self-diagnosing apparatus for motor vehicles |
JP3309437B2 (ja) * | 1992-08-19 | 2002-07-29 | 株式会社デンソー | 車両の自己診断装置 |
JPH0674086A (ja) * | 1992-08-27 | 1994-03-15 | Nippondenso Co Ltd | 車両の自己診断装置 |
US5448492A (en) * | 1992-10-26 | 1995-09-05 | United Technologies Automotive, Inc. | Monitoring the characteristics of a load driver controlled by a microcontroller |
DE4338462B4 (de) * | 1993-11-11 | 2004-04-22 | Hella Kg Hueck & Co. | Kontrollsystem für elektrische Verbraucher in Kraftfahrzeugen |
US5550762A (en) * | 1993-12-20 | 1996-08-27 | Doll; John A. | Diagnostic system for electronic automotive system |
DE4402853C1 (de) * | 1994-01-31 | 1994-11-24 | Daimler Benz Ag | Handsender zur Fernbedienung verschiedener Fahrzeugsysteme |
DE4422149A1 (de) * | 1994-06-27 | 1996-01-04 | Bosch Gmbh Robert | Verfahren zur Auswertung von Signalen |
JP3203162B2 (ja) * | 1995-08-31 | 2001-08-27 | 株式会社日立製作所 | 自動車用負荷駆動装置 |
DE19539852C1 (de) * | 1995-10-26 | 1996-10-02 | Daimler Benz Ag | Fehlbedienungsgeschützte Zündschlüssel-Fahrzeug-Kommunikationseinrichtung |
US5739592A (en) * | 1996-01-31 | 1998-04-14 | Grote Industries, Inc. | Power and communications link between a tractor and trailer |
US5890080A (en) * | 1996-06-25 | 1999-03-30 | Freightliner Corporation | Truck with monitored and resettable electronic control units |
US6014598A (en) * | 1996-06-28 | 2000-01-11 | Arcelik A.S. | Model-based fault detection system for electric motors |
JP3345829B2 (ja) * | 1997-03-31 | 2002-11-18 | 本田技研工業株式会社 | 車両用の診断プログラム作成装置 |
US5950149A (en) * | 1997-06-30 | 1999-09-07 | Chrysler Corporation | Method for testing vehicle electrical system during manufacturing |
-
1998
- 1998-01-17 DE DE1998101627 patent/DE19801627C1/de not_active Expired - Fee Related
-
1999
- 1999-01-10 US US09/381,164 patent/US6122576A/en not_active Expired - Lifetime
- 1999-01-18 WO PCT/DE1999/000105 patent/WO1999036794A1/de active IP Right Grant
- 1999-01-18 JP JP53665299A patent/JP4443635B2/ja not_active Expired - Fee Related
- 1999-01-18 EP EP99906060A patent/EP0975984B1/de not_active Expired - Lifetime
- 1999-01-18 DE DE59910180T patent/DE59910180D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2001520749A (ja) | 2001-10-30 |
DE59910180D1 (de) | 2004-09-16 |
EP0975984A1 (de) | 2000-02-02 |
US6122576A (en) | 2000-09-19 |
WO1999036794A1 (de) | 1999-07-22 |
JP4443635B2 (ja) | 2010-03-31 |
DE19801627C1 (de) | 1999-06-10 |
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