EP0470211A1 - Diagnostic process for checking regulation elements for the control of internal-combustion engines - Google Patents

Diagnostic process for checking regulation elements for the control of internal-combustion engines

Info

Publication number
EP0470211A1
EP0470211A1 EP19910900164 EP91900164A EP0470211A1 EP 0470211 A1 EP0470211 A1 EP 0470211A1 EP 19910900164 EP19910900164 EP 19910900164 EP 91900164 A EP91900164 A EP 91900164A EP 0470211 A1 EP0470211 A1 EP 0470211A1
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
intake
control
actuators
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
Application number
EP19910900164
Other languages
German (de)
French (fr)
Inventor
Rüdiger BECKER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0470211A1 publication Critical patent/EP0470211A1/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • 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
    • F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
    • 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

Definitions

  • the invention is based on a diagnostic method according to the type of the main claim.
  • the working behavior of the internal combustion engine is influenced by variations in the intake / exhaust valve control and / or by variations in the intake manifold or intake tract geometry.
  • the intake / exhaust valve control takes place either between two actuator options, e.g. B. in the camshaft changeover, instead of or the intake / exhaust valve control takes place continuously such.
  • the resonance charging of the combustion chambers in the respective operating state of the internal combustion engine is optimized by variations in the intake manifold or intake tract geometry, whereby an increased air supply into the combustion chambers of the internal combustion engine is made possible with the other unchanged position of other actuators, in particular the throttle valve.
  • other actuators in particular the throttle valve.
  • the variations occur either discontinuously, e.g. B. by actuating resonance flaps in the intake manifold or intake tract, or the variations take place continuously by controlling a number of actuating options of one or more actuators.
  • EP-A 170 018 a method for self-diagnosis of an actuator of an idle charge control in internal combustion engines is known.
  • an arbitrary actuator control for diagnosis is used for diagnosis of the actuator, i. H. that instead of the controls of the actuators to be diagnosed which optimize the other operational sequences, one or more defined actuator controls take place and their effects on other operating data of the internal combustion engine are analyzed.
  • the diagnosis can therefore only take place during certain, in particular stationary, operating states, since otherwise the program-specific, ie. H. would be disturbed by further actuators optimized operation of the internal combustion engine in its process.
  • the diagnostic method according to the invention enables diagnosis of the actuators for varying intake / exhaust valve control and / or for varying the intake manifold or intake tract geometry in the case of actuator controls which take place within the framework of the programmable controls of the internal combustion engine which optimize the operating sequence , without additional hardware effort, e.g. B. in the form of position indicators to require.
  • the data already present during normal operation of the internal combustion engine can be used for diagnosis for the diagnostic method presented here. It is particularly advantageous that the area accessible to diagnosis is not limited to the control device of the actuating device and the actuator itself. Rather, the diagnosed Area extended by this method according to the invention to all elements of the chain of effects with the variable intake manifold or intake tract geometry and / or the intake / exhaust valve control.
  • the diagnostic method for checking actuators for controlling an internal combustion engine is to be shown on the basis of a block diagram.
  • the actuators to be diagnosed are those for variations in the intake manifold or intake tract geometry and / or for variations in the intake / exhaust valve control.
  • position 1 denotes an internal combustion engine, to which the air required for combustion is supplied through an intake manifold 2 or an intake tract.
  • Position 3 summarizes actuators for varying the intake manifold or intake tract geometry and position 4 controls for varying the intake / exhaust valve control.
  • the actuators to be diagnosed are controlled by control units, which are summarized in position 5 for the sake of clarity.
  • B the measured by an air flow meter or air mass meter 6 air volume or air mass QL supplied.
  • the control of both the variations in the intake manifold or intake tract geometry 3 and the variations in the intake / exhaust valve control 4 cause the operating point of the internal combustion engine 1 to change. This changes a or Several operating data that can only be attributed indirectly to this actuator control of the actuators 3 and 4. So changes z. B. the amount of air or air mass QL sucked in through the suction pipe or the intake tract 2, which is measured by the air flow meter or air mass meter 6.
  • the control device 5 controls depending on the operating parameters of the internal combustion engine 1, in particular the speed n and / or the load L, the actuators for varying the intake manifold or intake tract geometry 3 and / or the actuators for varying the intake / exhaust valve control 4. It can now two methods of diagnosis can be used:
  • control signals of the actuators to be diagnosed which are within the scope of the program, ie. H. the controls that optimize the operating sequence of the internal combustion engine take place, fed to the diagnostic unit 7.
  • the air volume or air mass QL measured by the air flow meter or air mass meter 6 is stored as actual values and compared with stored target values. Either individual actuator variations are compared with corresponding setpoints, or the entire actuator variations are compared with stored function profiles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)
  • Testing Of Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

Un procédé de diagnostic permet de contrôler le fonctionnement d'organes de réglage de moteurs à combustion interne, notamment le fonctionnement et les effets de géométries diverses du collecteur d'admission ou du conduit d'aspiration, et/ou de modes de réalisation divers de la commande des soupapes d'admission ou d'échappement, le diagnostic pouvant être effectué pendant n'importe quel état de fonctionnement du moteur à combustion interne, et/ou pendant qu'il est à l'arrêt. A des fins de diagnostic, les modifications des données de fonctionnement du moteur à combustion interne provoquées uniquement de manière directe par la commande des organes de réglage et qui se produisent lors de la commande des organes de réglage sont détectées en tant que valeurs réelles et ces valeurs réelles sont comparées à des valeurs enregistrées de consigne.A diagnostic method makes it possible to control the operation of regulating members of internal combustion engines, in particular the operation and the effects of various geometries of the intake manifold or of the suction duct, and / or of various embodiments of control of the intake or exhaust valves, the diagnosis being able to be carried out during any operating state of the internal combustion engine, and / or while it is stopped. For diagnostic purposes, changes in the operating data of the internal combustion engine caused only directly by the control of the control elements and which occur when the control of the control elements are detected as actual values and these actual values are compared with recorded target values.

Description

Diaσnoseverfahren zur Überprüfung von Stellgliedern zur Steuerung von Brennkraftmaschinen Diagnostic method for checking actuators for controlling internal combustion engines
Stand der TechnikState of the art
Die Erfindung geht aus von einem Diagnoseverfahren nach der Gattung des Hauptanspruchs.The invention is based on a diagnostic method according to the type of the main claim.
Beim Betrieb von Brennkraftmaschinen ist es bekannt, daß durch Variationen der Ein-/Auslaßventilsteuerung und/oder durch Variationen der Saugrohr- bzw. Ansaugtraktgeometrie das Arbeits¬ verhalten der Brennkraftmaschine beeinflußt wird. Hierbei findet die Ein-/Auslaßventilsteuerung entweder zwischen zwei Stellermöglich¬ keiten, z. B. bei der Nockenwellenumschaltung, statt oder die Ein-/Auslaßventilsteuerung erfolgt stetig wie z. B. bei elektro- mechanischen oder elektrohydraulischen Stelleinrichtungen der Ein-/Auslaßventilsteuerung. Beispielhaft ist hier DE 32 47 916 (Vorrichtung zur Steuerung der Ventile einer Brennkraftmaschine über eine Nockenwelle) und DE-PS 21 01 761 zu nennen. Durch Variationen der Saugrohr- bzw. Ansaugtraktgeometrie wird die Resonanzaufladung der Brennräume im jeweiligen Betriebszustand der Brennkraftmaschine optimiert, wodurch bei ansonsten unveränderter Stellung anderer Stellglieder, insbesondere der Drosselklappe, eine erhöhte Luft¬ zufuhr in die Verbrennungsräume der Brennkraftmaschine ermöglicht wird. Hierzu sei beispielhaft auf DE 36 08 310 AI und DE 39 08 475 AI verwiesen. Auch in diesem Falle geschehen die Variationen entweder diskontinuierlich, z. B. durch Betätigung von Resonanzklappen im Saugrohr bzw. Ansaugtrakt, oder die Variationen geschehen kontinuierlich durch Ansteuerung mehrerer Stellmöglich¬ keiten eines oder mehrerer Stellglieder.When operating internal combustion engines, it is known that the working behavior of the internal combustion engine is influenced by variations in the intake / exhaust valve control and / or by variations in the intake manifold or intake tract geometry. Here, the intake / exhaust valve control takes place either between two actuator options, e.g. B. in the camshaft changeover, instead of or the intake / exhaust valve control takes place continuously such. B. in electro-mechanical or electro-hydraulic actuators of the intake / exhaust valve control. Examples are DE 32 47 916 (device for controlling the valves of an internal combustion engine via a camshaft) and DE-PS 21 01 761. The resonance charging of the combustion chambers in the respective operating state of the internal combustion engine is optimized by variations in the intake manifold or intake tract geometry, whereby an increased air supply into the combustion chambers of the internal combustion engine is made possible with the other unchanged position of other actuators, in particular the throttle valve. For example, see DE 36 08 310 AI and DE 39 08 475 AI referred. In this case, too, the variations occur either discontinuously, e.g. B. by actuating resonance flaps in the intake manifold or intake tract, or the variations take place continuously by controlling a number of actuating options of one or more actuators.
Weiterhin ist aus der Europäischen Patentanmeldung EP-A 170 018 ein Verfahren zur Eigendiagnose eines Stellers einer Leerlauffüllungs¬ regelung bei Brennkraftmaschinen bekannt. Dort wird zur Diagnose des Stellgliedes eine willkürliche Stellgliedansteuerung zur Diagnose benutzt, d. h. daß statt der die sonstigen Betriebsabläufe opti¬ mierenden Ansteuerungen der zu diagnostizierenden Stellglieder ein oder mehrere definierte Stellgliedansteuerungen stattfinden und deren Auswirkungen auf andere Betriebsdaten der Brennkraftmaschine analysiert werden. Die Diagnose kann somit nur während bestimmter, insbesondere stationärer Betriebszustände geschehen, da ansonsten die programmgemäße, d. h. durch weitere Stellglieder optimierte, Arbeitsweise der Brennkraftmaschine in ihrem Ablauf gestört würde.Furthermore, from the European patent application EP-A 170 018 a method for self-diagnosis of an actuator of an idle charge control in internal combustion engines is known. There, an arbitrary actuator control for diagnosis is used for diagnosis of the actuator, i. H. that instead of the controls of the actuators to be diagnosed which optimize the other operational sequences, one or more defined actuator controls take place and their effects on other operating data of the internal combustion engine are analyzed. The diagnosis can therefore only take place during certain, in particular stationary, operating states, since otherwise the program-specific, ie. H. would be disturbed by further actuators optimized operation of the internal combustion engine in its process.
Vorteil der ErfindungAdvantage of the invention
Das erfindungsgemäße Diagnoseverfahren mit den kennzeichnenden Merkmalen des Hauptanspruches ermöglicht demgegenüber eine Diagnose der Stellglieder zur Variation von Ein-/Auslaßventilsteuerung und/oder zur Variation der Saugrohr- bzw. Ansaugtraktgeometrie bei Stellgliedansteuerungen, die im Rahmen der programmgemäßen, d. h. den Betriebsablauf optimierenden Steuerungen der Brennkraftmaschine stattfinden, ohne einen zusätzlichen Hardware-Aufwand, z. B. in Form von Stellungsrückmeldern, zu erfordern. Es können für das hier vorgestellte Diagnoseverfahren, je nach Ausbildung und Integration der beteiligten Systeme, die ohnehin im normalen Betrieb der Brenn¬ kraftmaschine vorliegenden Daten zur Diagnose herangezogen werden. Besonders vorteilhaft ist es, daß der einer Diagnose zugängliche Bereich nicht nur auf das Steuergerät der Stelleinrichtung und das Stellglied selbst beschränkt ist. Vielmehr wird der diagnostizierte Bereich durch dieses erfindungsgemäße Verfahren auf alle Elemente der Wirkungskette mit der variablen Saugrohr- bzw. Ansaugtrakt¬ geometrie und/oder der Ein-/Auslaßventilsteuerung erweitert.The diagnostic method according to the invention with the characterizing features of the main claim, on the other hand, enables diagnosis of the actuators for varying intake / exhaust valve control and / or for varying the intake manifold or intake tract geometry in the case of actuator controls which take place within the framework of the programmable controls of the internal combustion engine which optimize the operating sequence , without additional hardware effort, e.g. B. in the form of position indicators to require. Depending on the design and integration of the systems involved, the data already present during normal operation of the internal combustion engine can be used for diagnosis for the diagnostic method presented here. It is particularly advantageous that the area accessible to diagnosis is not limited to the control device of the actuating device and the actuator itself. Rather, the diagnosed Area extended by this method according to the invention to all elements of the chain of effects with the variable intake manifold or intake tract geometry and / or the intake / exhaust valve control.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung darge¬ stellt und wird in der nachfolgenden Beschreibung näher erläutert.An embodiment of the invention is shown in the drawing and is explained in more detail in the following description.
Beschreibung des AusführungsbeispielsDescription of the embodiment
In diesem Ausführungsbeispiel soll anhand eines Blockschaltbildes das Diagnoseverfahren zur Überprüfung von Stellgliedern zur Steuerung einer Brennkraftmaschine gezeigt werden. Hierbei handelt es sich bei den zu diagnostizierenden Stellgliedern um solche zur Variationen der Saugrohr- bzw. Ansaugtraktgeometrie und/oder zur Variationen der Ein-/Auslaßventilsteuerung.In this exemplary embodiment, the diagnostic method for checking actuators for controlling an internal combustion engine is to be shown on the basis of a block diagram. The actuators to be diagnosed are those for variations in the intake manifold or intake tract geometry and / or for variations in the intake / exhaust valve control.
Als Position 1 wird in dem Ausführungsbeispiel eine Brennkraft¬ maschine bezeichnet, der durch ein Saugrohr 2 bzw. einen Ansaugtrakt die zur Verbrennung nötige Luft zugeführt wird. Die Position 3 faßt Stellglieder zur Variation der Saugrohr- bzw. Ansaugtraktgeometrie und die Position 4 Stellglieder zur Variation der Ein/Auslaßventil¬ steuerung zusammen. Die Ansteuerung der zu diagnostizierenden Stell¬ glieder erfolgt durch Steuereinheiten, die der Übersichtlichkeit wegen in Position 5 zusammengefaßt werden. Einer Diagnoseeinheit 7 werden die Steuersignale der zu diagnostizierenden Stellglieder und weitere Betriebsdaten, wie z. B. die von einem Luftmengenmesser bzw. Luftmassenmesser 6 gemessene Luftmenge bzw. Luftmasse QL, zugeführt.In the exemplary embodiment, position 1 denotes an internal combustion engine, to which the air required for combustion is supplied through an intake manifold 2 or an intake tract. Position 3 summarizes actuators for varying the intake manifold or intake tract geometry and position 4 controls for varying the intake / exhaust valve control. The actuators to be diagnosed are controlled by control units, which are summarized in position 5 for the sake of clarity. A control unit 7, the control signals of the actuators to be diagnosed and other operating data such. B. the measured by an air flow meter or air mass meter 6 air volume or air mass QL supplied.
Die Ansteuerung sowohl der Variationen der Saugrohr- bzw. Ansaug¬ traktgeometrie 3 als auch der Variationen der Ein-/Auslaßventil- steuerung 4 bewirken eine Veränderung des Arbeitspunktes der Brenn¬ kraftmaschine 1. Hierdurch bedingt ist eine Veränderung einer oder mehrerer Betriebsdaten, die lediglich mittelbar auf diese Stell¬ gliedansteuerung der Stellglieder 3 und 4 zurückzuführen sind. So verändert sich z. B. die durch das Saugrohr bzw. den Ansaugtrakt 2 angesaugte Luftmenge bzw. Luftmasse QL, die durch den Luftmengen¬ messer bzw. Luftmassenmesser 6 gemessen wird. Das Steuergerät 5 steuert abhängig von Betriebskenngrößen der Brennkraftmaschine 1, inbesondere der Drehzahl n und/oder der Last L, die Stellglieder zur Variation der Saugrohr- bzw. Ansaugtraktgeometrie 3 und/oder die Stellglieder zur Variationen der Ein-/Auslaßventilsteuerung 4. Es können nun zwei Möglichkeiten der Diagnose angewendet werden:The control of both the variations in the intake manifold or intake tract geometry 3 and the variations in the intake / exhaust valve control 4 cause the operating point of the internal combustion engine 1 to change. This changes a or Several operating data that can only be attributed indirectly to this actuator control of the actuators 3 and 4. So changes z. B. the amount of air or air mass QL sucked in through the suction pipe or the intake tract 2, which is measured by the air flow meter or air mass meter 6. The control device 5 controls depending on the operating parameters of the internal combustion engine 1, in particular the speed n and / or the load L, the actuators for varying the intake manifold or intake tract geometry 3 and / or the actuators for varying the intake / exhaust valve control 4. It can now two methods of diagnosis can be used:
Zum einen werden die Ansteuersignale der zu diagnostizierenden Stellglieder, die im Rahmen der programmgemäßen, d. h. den Betriebs¬ ablauf der Brennkraftmaschine optimierenden Ansteuerungen statt¬ finden, der Diagnoseeinheit 7 zugeführt.On the one hand, the control signals of the actuators to be diagnosed, which are within the scope of the program, ie. H. the controls that optimize the operating sequence of the internal combustion engine take place, fed to the diagnostic unit 7.
Zum anderen werden bei bestimmten, z. B. stationären Betriebszu- ständen, definierte Ansteuerungen der zu diagnostizierenden Stell¬ glieder willkürlich getätigt und der Diagnoseeinheit 7 zugeführt. Willkürlich heißt hier, daß statt der die Betriebsabläufe der Brenn¬ kraftmaschine optimierenden Ansteuerungen definierte Stellglieder- ansteuerungen stattfinden.On the other hand, certain, e.g. B. stationary operating states, defined actuations of the actuators to be diagnosed are carried out arbitrarily and fed to the diagnostic unit 7. Here, arbitrarily means that instead of the controls that optimize the operating sequences of the internal combustion engine, defined actuator controls take place.
Abhängig von diesen Ansteuersignalen werden in der Diagnoseeinheit 7 Betriebsdaten der Brennkraftmaschine, die lediglich mittelbar auf diese Stellgliedansteuerung zurückzuführen sind, z. B. die durch den Luftmengenmesser bzw. Luftmassenmesser 6 gemessene Luftmenge bzw. Luftmasse QL, als Istwerte gespeichert und mit gespeicherten Soll¬ werten verglichen. Hierbei werden entweder einzelne Steller¬ variationen mit entsprechenden Sollwerten verglichen, oder es werden die gesamten Stellervariationen mit gespeicherten Funktionsverläufen verglichen. Depending on these control signals, 7 operating data of the internal combustion engine, which can only be attributed indirectly to this actuator control, z. For example, the air volume or air mass QL measured by the air flow meter or air mass meter 6 is stored as actual values and compared with stored target values. Either individual actuator variations are compared with corresponding setpoints, or the entire actuator variations are compared with stored function profiles.

Claims

Ansprüche Expectations
1. Verfahren zur Diagnose von Funktionselementen einer Brennkraft¬ maschine bei aufrechterhaltender Funktion des die Betriebsabläufe der Brennkraftmaschine steuernden bzw. regelnden Steuer- und Regel¬ systems, dadurch gekennzeichnet, daß1. A method for diagnosing functional elements of an internal combustion engine while maintaining the function of the control and regulating systems which control or regulate the operating processes of the internal combustion engine, characterized in that
- während des Normalbetriebes der Brennkraftmaschine zur Steuerung bzw. Regelung des Betriebes der Brennkraftmaschine Stellglieder zur Variation der Saugrohr- bzw. Ansaugtraktgeometrie und/oder zur Variation der Ein-/Auslaßventilsteuerung der Brennkraftmaschine angesteuert werden und- Actuators for varying the intake manifold or intake tract geometry and / or for varying the intake / exhaust valve control of the internal combustion engine are controlled during normal operation of the internal combustion engine to control or regulate the operation of the internal combustion engine and
- bei beliebig wählbaren Betriebszuständen die Änderungen von Betriebsdaten der Brennkraftmaschine während dieser Ansteuerungen als Istwerte erfaßt werden und diese Istwerte mit gespeicherten Sollwerten verglichen werden und- With any selectable operating states, the changes in operating data of the internal combustion engine during these actuations are recorded as actual values and these actual values are compared with stored target values and
- die Vergleichsergebnisse zur Diagnose der Funktionselemente der Brennkraftmaschine herangezogen werden.- The comparison results are used to diagnose the functional elements of the internal combustion engine.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Variationen der Ein-/Auslaßventilsteuerung durch Nockenwellenum- schaltungen herbeigeführt werden.2. The method according to claim 1, characterized in that the variations of the intake / exhaust valve control are brought about by switching camshafts.
3. Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Variationen der Ein-/Auslaßventil- steuerung durch elektromechanische oder elektrohydraulische Steuer¬ vorrichtungen herbeigeführt werden. 3. The method according to at least one of the preceding claims, characterized in that the variations of the intake / exhaust valve control are brought about by electromechanical or electrohydraulic control devices.
4. Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Variationen der Saugrohr- bzw. An¬ saugtraktgeometrie entweder diskontinuierlich, z. B. durch Betäti¬ gung von Resonanzklappen im Saugrohr bzw. Ansaugtrakt als Stellglie¬ der, oder durch kontinuierlich durch Ansteuerung mehrerer Stell¬ möglichkeiten eines oder mehrerer Stellglieder geschehen.4. The method according to at least one of the preceding claims, characterized in that the variations of the intake manifold or An¬ intake tract geometry either discontinuously, for. B. by actuation of resonance flaps in the intake manifold or intake tract as an actuator, or by continuously by activating several actuating options of one or more actuators.
5. Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Stellgliedansteuerungen willkürlich getätigt wird, d. h. daß statt der die sonstigen Betriebsabläufe optimierenden Ansteuerungen der zu diagnostizierenden Stellglieder ein oder mehrere definierte Stellgliedansteuerungen stattfinden.5. The method according to at least one of the preceding claims, characterized in that the actuator controls is made arbitrarily, d. H. that instead of the controls of the actuators to be diagnosed that optimize the other operating processes, one or more defined actuator controls take place.
6. Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die willkürlichen Stellgliedansteuerun¬ gen bei stationären Betriebszuständen stattfinden und/oder die Ein¬ flüsse der übrigen Stellglieder während der Diagnose in ihrem Funktionsverlauf gespeichert sind und berücksichtigt werden.6. The method according to at least one of the preceding claims, characterized in that the arbitrary actuator controls take place in steady-state operating states and / or the influences of the other actuators are stored during the diagnosis in their function and are taken into account.
7. Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß bei der willkürlichen Stellgliedansteu¬ erung die gesamte mögliche Stellervariation in ihrem Funktionsver¬ lauf abgefahren wird und die entsprechenden Änderungen der zuge¬ ordneten Istwerte erfaßt und mit gespeicherten Funktionsverläufen verglichen werden.7. The method according to at least one of the preceding claims, characterized in that the entire possible actuator variation is traversed in its function course in the arbitrary control element control and the corresponding changes in the assigned actual values are detected and compared with stored function profiles.
8. Verf.ihren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß als Betriebsdaten der Brennkraftmaschine beispielsweise die Drehzahl und/oder die Luftmenge bzw. Luftmasse erfaßt werden. 8. Verf.ihren according to at least one of the preceding claims, characterized in that, for example, the speed and / or the air quantity or air mass are recorded as operating data of the internal combustion engine.
9. Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß als Funktionselemente die Stellglieder zur Variation der Saugrohr- bzw. Ansaugtraktgeometrie und/oder zur Variation der Ein-/Auslaßventilsteuerung der Brennkraftmaschine diagnostiziert werden.9. The method according to at least one of the preceding claims, characterized in that the actuators for varying the intake manifold or intake tract geometry and / or for varying the intake / exhaust valve control of the internal combustion engine are diagnosed as functional elements.
10. Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß als Funktionselemente beliebige Elemente der Brennkraftmaschine und des Steuer- bzw. Regelsystems der Brenn¬ kraftmaschine, die in einer Wirkungsverbindung mit den Stellgliedern zur Variation der Saugrohr- bzw. Ansaugtraktgeometrie und/oder zur Variation der Ein-/Auslaßventilsteuerung der Brennkraftmaschine stehen, auf Fehlfunktionen hin diagnostiziert werden. 10. The method according to at least one of the preceding claims, characterized in that as functional elements any elements of the internal combustion engine and the control system of the internal combustion engine, which are in operative connection with the actuators for varying the intake manifold or intake tract geometry and / or stand for variation of the intake / exhaust valve control of the internal combustion engine, are diagnosed for malfunctions.
EP19910900164 1990-02-26 1990-12-13 Diagnostic process for checking regulation elements for the control of internal-combustion engines Ceased EP0470211A1 (en)

Applications Claiming Priority (2)

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DE4005973 1990-02-26
DE4005973A DE4005973A1 (en) 1990-02-26 1990-02-26 DIAGNOSTIC METHOD FOR CHECKING ACTUATORS FOR CONTROLLING INTERNAL COMBUSTION ENGINES

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US (1) US5249459A (en)
EP (1) EP0470211A1 (en)
JP (2) JPH04505489A (en)
KR (1) KR920701632A (en)
DE (1) DE4005973A1 (en)
WO (1) WO1991013246A1 (en)

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US5249459A (en) 1993-10-05
WO1991013246A1 (en) 1991-09-05
JPH04505489A (en) 1992-09-24
DE4005973A1 (en) 1991-09-05
DE4005973C2 (en) 1992-09-10
KR920701632A (en) 1992-08-12
JP2002030973A (en) 2002-01-31

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