DE102007047587A1 - Motor vehicle, has diagnosis device detecting operating characteristics of electrical machine, inverter and/or signal lines and controlling operating characteristics such as speed, of combustion engine during failure of components - Google Patents

Motor vehicle, has diagnosis device detecting operating characteristics of electrical machine, inverter and/or signal lines and controlling operating characteristics such as speed, of combustion engine during failure of components Download PDF

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Publication number
DE102007047587A1
DE102007047587A1 DE102007047587A DE102007047587A DE102007047587A1 DE 102007047587 A1 DE102007047587 A1 DE 102007047587A1 DE 102007047587 A DE102007047587 A DE 102007047587A DE 102007047587 A DE102007047587 A DE 102007047587A DE 102007047587 A1 DE102007047587 A1 DE 102007047587A1
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Prior art keywords
motor vehicle
combustion engine
internal combustion
battery
controller
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DE102007047587A
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German (de)
Inventor
Martin Gustmann
Manfred Stahl
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Robert Bosch GmbH
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Robert Bosch GmbH
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W2050/0001—Details of the control system
    • B60W2050/0002—Automatic control, details of type of controller or control system architecture
    • B60W2050/0008—Feedback, closed loop systems or details of feedback error signal
    • B60W2050/001—Proportional integral [PI] controller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/24—Energy storage means
    • 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
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
    • 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
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2058—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using information of the actual current value
    • 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
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/2068—Output circuits, e.g. for controlling currents in command coils characterised by the circuit design or special circuit elements
    • F02D2041/2072—Bridge circuits, i.e. the load being placed in the diagonal of a bridge to be controlled in both directions
    • 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
    • F02D2041/227—Limping Home, i.e. taking specific engine control measures at abnormal conditions
    • 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
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles
    • 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
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Abstract

The vehicle (1) has a hybrid drive comprising a drive section with an internal combustion engine (5) and an electrical machine (7). A battery (11) is provided for storing and supplying energy to loads of an electrical system. The battery is connected with the electrical machine by a pulse-controlled inverter (10). A diagnosis device (2) detects operating characteristics of the electrical machine, the pulse-controlled inverter and/or signal lines. The diagnosis device controls operating characteristics such as speed, of the combustion engine during failure of components. An independent claim is also included for a method for controlling a motor vehicle.

Description

Stand der TechnikState of the art

Die Erfindung betrifft ein Kraftfahrzeug mit Hybridantrieb nach dem Oberbegriff des Anspruchs 1.The The invention relates to a motor vehicle with hybrid drive after Preamble of claim 1.

Bei einem Kraftfahrzeug mit Hybridantrieb besteht der Antriebsstrang üblicherweise aus einem Verbrennungsmotor, mindestens einer Elektromaschine und einer Batterie. Je nach Ausführung eines parallelhybridischen Antriebsstrangs sind der Verbrennungsmotor und die Elektromaschine fest oder über eine steuerbare Trennkupplung miteinander verbunden. Die Batterie ist über einen Pulswechselrichter (Inverter) elektrisch mit der Elektromaschine verbunden. Die Baugruppen sind über Signalleitungen, insbesondere auch in Gestalt eines Bussystems, miteinander vernetzt. Ein Ausfall des Inverters würde dazu führen, dass die in der Batterie gespeicherte Energie sehr schnell durch Hochvoltverbraucher oder mittels Gleichspannungswandlern an die Hochvoltbatterie angeschlossenen Niedervoltverbraucher entnommen werden würde. Dabei besteht dann das Risiko, dass das Fahrzeug sich aus Energiemangel nicht mehr aus eigener Kraft fortbewegen kann.at a motor vehicle with hybrid drive, the drive train is usually from an internal combustion engine, at least one electric machine and a battery. Depending on the version a parallel hybrid powertrain are the internal combustion engine and the electric machine fixed or via a controllable separating clutch connected with each other. The battery is via a pulse inverter (Inverter) electrically connected to the electric machine. The assemblies are about Signal lines, in particular in the form of a bus system, networked with each other. A failure of the inverter would do so to lead, that the energy stored in the battery gets through very quickly High-voltage consumers or DC-DC converters to the high-voltage battery connected low-voltage consumers would be removed. there Then there is the risk that the vehicle is out of energy can not move on its own.

Offenbarung der ErfindungDisclosure of the invention

Technische AufgabeTechnical task

Der Erfindung liegt die Aufgabe zugrunde, ein verbessertes Kraftfahrzeug mit Hybridantrieb zu schaffen, bei dem durch ein besseres Energiemanagement das Risiko von Pannen infolge Ausfall eines Inverters vermindert ist.Of the Invention is based on the object, an improved motor vehicle to create a hybrid drive, through which better energy management reduces the risk of breakdowns due to failure of an inverter is.

Technische LösungTechnical solution

Ausgehend von einem Kraftfahrzeug der gattungsgemäßen Art wird diese Aufgabe durch die in Anspruch 1 genannte Erfindung gelöst. Eine Verbesserung der Eigenschaften des Kraftfahrzeugs ergibt sich erfindungsgemäß insbesondere dadurch, dass eine Diagnoseeinrichtung vorgesehen ist, die Betriebskenngrößen der Elektromaschine, des Pulswechselrichters und/oder von Signalleitungen erfasst und bei Feststellung einer Störung der genannten Komponenten eine Betriebskenngröße des Verbrennungsmotors des Kraftfahrzeugs, wie insbesondere seine Drehzahl, beeinflusst.outgoing From a motor vehicle of the generic type, this task solved by the invention mentioned in claim 1. An improvement of the properties of the motor vehicle results in particular according to the invention in that a Diagnostic device is provided, the operating characteristics of the Electric machine, the pulse inverter and / or signal lines detected and upon detection of a malfunction of said components an operating characteristic of the internal combustion engine of the motor vehicle, in particular its speed, influenced.

Vorteile der ErfindungAdvantages of the invention

Der Kern der Erfindung besteht darin, dass eine Betriebskenngröße des Verbrennungsmotors, wie insbesondere seine Drehzahl, so einzustellen, dass einerseits keine Überladung der Batterie stattfindet, andererseits aber diese noch Energie für Verbraucher zur Verfügung stellt, falls der Inverter ausfällt. Ein Ausfall des Inverters äußert sich beispielsweise dadurch, dass die in ihm vorgesehenen H-Brückenschaltungen nicht mehr ansteuerbar sind. Vorteilhaft ist dazu eine Diagnoseeinrichtung vorgesehen, die aus verschiedenen Signalen ermittelt, ob die Elektromaschine bzw. der Inverter noch betriebsbereit sind. Werden die Elektromaschine bzw. der Inverter als gestört erkannt, wird der Energiefluss der Batterie beobachtet. Sofern Energie in die Batterie fließt und keine sonstige Energiequelle vorhanden ist, kann diese Energie nur von der Elektromaschine stammen. Ein für die Steuerung der Drehzahl des Verbrennungsmotors verantwortliches Steuergerät wird durch Vorgabe eines Grenzwerts für die maximale Drehzahl und dessen Überschreitung über den Ausfall der Elektromaschine informiert. Durch anschließende Eingriffe in den Verbrennungsmotor und/oder das Getriebe, kann die Drehzahl des Verbrennungsmotors auf den gewünschten Grenzwert geregelt werden. Für die Beeinflussung der Drehzahl des Verbrennungsmotors ist vorteilhaft eine Regelungseinrichtung vorgesehen, der eingangsseitig ein Messwert des Batteriestroms und bei Feststellung einer Störung ein auf diese Störung hinweisendes Steuersignal zuführbar sind. Besonders vorteilhaft umfasst die Regelungseinrichtung einen PI-Regler. Die Regelungseinrichtung umfasst vorteilhaft eine Schalteinrichtung, die bei Feststellung einer Störung der Elektromaschine einen Eingang eines für die Steuerung des Verbrennungsmotors vorgesehenen Steuergeräts mit dem Ausgang des PI-Reglers verbindet. Zur Unterdrückung hochfrequenter Störanteile ist vorteilhaft eingangsseitig vor dem PI-Regler ein Filter angeordnet.Of the Essence of the invention is that an operating characteristic of the internal combustion engine, such as in particular, its speed to be adjusted so that on the one hand no overload the battery takes place, but on the other hand, this still energy for consumers to disposal if the inverter fails. A failure of the inverter manifests itself for example, characterized in that the H-bridge circuits provided in it are no longer controllable. A diagnostic device is advantageous for this purpose provided, which determines from various signals whether the electric machine or the inverter is still ready for operation. Be the electric machine or the inverter detected as disturbed, the energy flow of the battery is observed. Unless energy is in the battery is flowing and no other energy source is available, this energy can only come from the electric machine. One for the control of the speed the internal combustion engine responsible controller is through Specification of a limit for the maximum speed and its exceeding of the failure informed the electric machine. By subsequent intervention in the internal combustion engine and / or the gearbox, the engine speed can be adjusted to the desired Limit be regulated. For influencing the speed of the internal combustion engine is advantageous a control device provided on the input side, a measured value of the battery current and, if a fault is detected, a control signal indicative of this fault supplied are. Particularly advantageously, the control device comprises a PI controller. The control device Advantageously, a switching device, which upon detection a disorder of Electric machine an input one for the control of the internal combustion engine provided control unit connects to the output of the PI controller. For the suppression of high-frequency interference components is advantageously arranged on the input side before the PI controller a filter.

Weitere Vorteile ergeben sich aus der Beschreibung, der Zeichnung und den Unteransprüchen.Further Benefits result from the description, the drawing and the Dependent claims.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Ausführungsformen der Erfindung werden nachfolgend unter Bezug auf die Zeichnung näher erläutert. Dabei zeigt:embodiments The invention will be explained in more detail with reference to the drawing. there shows:

1 ein Blockschaltbild eines Kraftfahrzeugs mit Hybridantrieb; 1 a block diagram of a motor vehicle with hybrid drive;

2 eine Blockdiagramm einer erfindungsgemäßen Regeleinrichtung. 2 a block diagram of a control device according to the invention.

Ausführungsformen der Erfindungembodiments the invention

Ausführungsformen der Erfindung werden im Folgenden unter Bezug auf die Zeichnung näher erläutert. Das in 1 dargestellte Blockschaltbild zeigt ein Kraftfahrzeug 1 mit Hybridantrieb. Dabei sind allerdings nur wenige Teile des Kraftfahrzeugs 1, wie insbesondere dessen Antriebsstrang, schematisch dargestellt. Wie bereits schon eingangs erwähnt umfasst der Antriebsstrang eines Kraftfahrzeugs 1 mit Hybridantrieb einen Elektromotor 5, eine abtriebsseitig folgende erste Kupplung 6, eine elektrische Maschine 7, eine abtriebsseitig folgende zweite Kupplung 8, ein Getriebe 9 und ein mit der Antriebsachse 1.3 zusammenwirkendes Differential 1.2. Das Fahrwerk des Kraftfahrzeugs 1 ist in 1 nur durch ein Rad 1.1 angedeutet. Für die Speicherung von Energie und die Energieversorgung von Verbrauchern in dem Bordnetz des Kraftfahrzeugs 1 ist eine Batterie 11 vorgesehen. Die Batterie 11 versorgt Hochvoltverbraucher 12 des Bordnetzes direkt und Niedervoltverbraucher 14 mittelbar über einen dazwischen geschalteten Gleichspannungswandler 13. Weiterhin ist die Batterie über einen Pulswechselrichter (Inverter) 10 mit der elektrischen Maschine 7 verbunden. Mit Bezugsziffer 3 ist ein Steuergerät bezeichnet, das für die Steuerung des Verbrennungsmotors 5 des Kraftfahrzeugs 1 vorgesehen ist. Mit Bezugsziffer 2 ist eine Diagnoseeinrichtung bezeichnet, die mit dem Steuergerät 3, der Batterie 11, dem Pulswechselrichter 10 und dem Getriebe 9 verbunden ist. Die Diagnoseeinrichtung 2 kann, in einer Ausführungsvariante, vorteilhaft auch Bestandteil des Steuergeräts 3 sein.Embodiments of the invention are explained in more detail below with reference to the drawing. This in 1 Block diagram shown shows a motor vehicle 1 with hybrid drive. However, only a few parts of the motor vehicle are 1 . as in particular its drive train, shown schematically. As already mentioned at the beginning, the drive train of a motor vehicle comprises 1 with hybrid drive an electric motor 5 , a first clutch following the output side 6 , an electric machine 7 , a downstream second clutch on the output side 8th , a gearbox 9 and one with the drive axle 1.3 interacting differential 1.2 , The chassis of the motor vehicle 1 is in 1 only by a wheel 1.1 indicated. For the storage of energy and the energy supply of consumers in the electrical system of the motor vehicle 1 is a battery 11 intended. The battery 11 supplies high-voltage consumers 12 of the electrical system directly and low-voltage consumers 14 indirectly via a DC-DC converter connected in between 13 , Furthermore, the battery is powered by a pulse inverter (inverter) 10 with the electric machine 7 connected. With reference number 3 is a control unit designated for the control of the internal combustion engine 5 of the motor vehicle 1 is provided. With reference number 2 is a diagnostic device referred to the control unit 3 , the battery 11 , the pulse inverter 10 and the transmission 9 connected is. The diagnostic device 2 can, in one embodiment, advantageously also part of the controller 3 be.

Im Folgenden wird, unter Bezug auf 2, eine Regeleinrichtung beschrieben, mit deren Hilfe die erfindungsgemäße Verbesserung erreichbar ist. Mit Bezugsziffer 21 ist ein Filter bezeichnet, dessen Eingang 21.1 der Messwert des Batteriestroms der Batterie 11 zugeführt wird. Das Filter 21 wirkt als Tiefpass, um störende hochfrequente Signalanteile zu filtern. Der Ausgang 21.2 des Filters 21 ist mit dem Eingang 22.1 eines PI-Reglers 22 verbunden. Die Summe aus dem Ausgangsanschluss 22.2 des PI-Reglers 22 und einem Sollwert nSoll wird dem Eingang 23.2 zugeführt. 23.2 ist ein Eingang der Schalteinrichtung 23. Der Sollwert nSoll kann Werte zwischen den Grenzwerten nObergrenze und nUntergrenze annehmen. Einem zweiten Eingang 23.1 der Schalteinrichtung 23 ist der Maximalwert nMax der Drehzahl zugeführt. Der Ausgang 23.4 der Schalteinrichtung 23 kommuniziert mit der Fahrzeugsteuerung über den Eingang 3.3. Wie schon erwähnt, kann die Diagnoseeinrichtung entweder in dem Steuergerät 3 oder auch außerhalb des Steuergeräts 3 angeordnet sein. Über den Eingang 3.1 werden dem Steuergerät 3 Betriebskenngrößen des Verbrennungsmotors 5 zugeführt. Als solche Betriebskenngrößen kommen insbesondere ein gewünschtes Drehmoment und/oder eine gewünschte Drehzahl in Betracht. Über den Ausgang 3.5 des Steuergeräts 3 werden dem Verbrennungsmotor 5 Stellgrößen zugeführt. Als solche Stellgrößen kommen insbesondere der Drosselklappenwinkel und/oder der Zündwinkel in Betracht.The following will, with reference to 2 , Described a control device by means of which the improvement according to the invention can be achieved. With reference number 21 is a filter called its input 21.1 the measured value of the battery current of the battery 11 is supplied. The filter 21 acts as a low-pass filter to filter out disturbing high-frequency signal components. The exit 21.2 of the filter 21 is with the entrance 22.1 a PI controller 22 connected. The sum of the output terminal 22.2 of the PI controller 22 and a setpoint n setpoint is the input 23.2 fed. 23.2 is an input of the switching device 23 , The setpoint n setpoint can assume values between the limit values n upper limit and n lower limit . A second entrance 23.1 the switching device 23 is the maximum value n max supplied to the speed. The exit 23.4 the switching device 23 communicates with the vehicle control via the entrance 3.3 , As already mentioned, the diagnostic device can either be in the control unit 3 or outside the control unit 3 be arranged. About the entrance 3.1 be the controller 3 Operating characteristics of the internal combustion engine 5 fed. As such operating parameters are in particular a desired torque and / or a desired speed into consideration. About the exit 3.5 of the control unit 3 become the internal combustion engine 5 Actuated variables supplied. As such manipulated variables, in particular the throttle valve angle and / or the ignition angle come into consideration.

Im Folgenden wird die Wirkungsweise der in 2 dargestellten Regelungseinrichtung unter Bezug auf 1 und 2 beschrieben. Aus der Batterie 11 (1) fließende Ströme werden als positiv angenommen. Wird mittels der Diagnoseeinrichtung 2 ein Fehler des Inverters 10 oder der die Baugruppen verbindenden Signalleitungen festgestellt, dann wird ein Betriebsmodus „Regelung auf Grenzen" aktiviert. Dies wird durch Anlegen eines entsprechenden Steuersignals an den Eingang 23.5 der Schalteinrichtung 23 und den Eingang 3.4 des Steuergeräts 3 erreicht. Tritt an dem Eingang 22.1 des PI-Reglers 22 eine positive Regeldifferenz auf, dann wird zu einem vorgebbaren Drehzahlwert nSoll die entsprechende Ausgangsgröße des PI-Reglers 22 addiert, die den Startwert Null hat. Dadurch wird der Drehzahlwert nGrenze des Verbrennungsmotors 5 entsprechend verändert. Der über die Leitung 23.3 bereit gestellte Drehzahlwert nSoll liegt in einfacher Form als Parameter vor oder als Ergebnis eines komplexeren Rechengangs. Die an dem Ausgang 22.2 des Reglers 22 bereitgestellte Ausgangsgröße kann einen Wert zwischen den Grenzwerten nObergrenze und nUntergrenze annehmen. Tritt an dem Eingang 22.1 des PI-Reglers 22 eine negative Regeldifferenz auf, wird von einem vorgebbaren Sollwert nSoll die an dem Ausgang 22.2 des PI-Reglers 22 bereit gestellte Ausgangsgröße subtrahiert. Dies hat zur Folge, dass sich die Drehzahl nGrenze des Verbrennungsmotors 5 entsprechend verringert. Die an dem Eingang 23.1 der Schalteinrichtung 23 bereitgestellte Größe nmax ist eine Variable und beinhaltet zum Beispiel die physikalisch zulässige Drehzahl der Elektromaschine 7. In bestimmten Notlaufsituationen wird hier auch eine Begrenzung der Drehzahl des Verbrennungsmotors 5 angefordert. Dem Eingang 21.3 wird, in einem einfachen Anwendungsfall, ein Parameter mit dem Wert Null zugeführt. In einem komplexeren Anwendungsfall kann hier ein Signal anliegen, das eine Funktion des Ladezustands, der Spannung und des Stroms der Batterie 11 ist.The following is the mode of action of in 2 illustrated control device with reference to 1 and 2 described. From the battery 11 ( 1 ) flowing currents are assumed to be positive. Is by means of the diagnostic device 2 an error of the inverter 10 or if the signal lines connecting the modules are detected, then a "closed-loop control" operating mode is activated by applying a corresponding control signal to the input 23.5 the switching device 23 and the entrance 3.4 of the control unit 3 reached. Kick the entrance 22.1 of the PI controller 22 a positive control difference, then to a predetermined speed value n setpoint is the corresponding output variable of the PI controller 22 added, which has the starting value zero. As a result, the speed value n becomes the limit of the internal combustion engine 5 changed accordingly. The over the line 23.3 provided speed value n set is in a simple form as a parameter before or as a result of a complex calculation. The at the exit 22.2 of the regulator 22 provided output value can assume a value between the limits n upper limit and n lower limit . Kick the entrance 22.1 of the PI controller 22 a negative control difference, is from a predetermined setpoint n Soll the at the output 22.2 of the PI controller 22 Subtracted ready output. This has the consequence that the speed n limit of the internal combustion engine 5 reduced accordingly. The at the entrance 23.1 the switching device 23 provided quantity n max is a variable and includes, for example, the physically permissible speed of the electric machine 7 , In certain emergency situations here is also a limitation of the speed of the engine 5 requested. The entrance 21.3 In a simple application, a parameter with the value zero is supplied. In a more complex application, a signal may be present here which is a function of the state of charge, the voltage and the current of the battery 11 is.

Claims (9)

Kraftfahrzeug (1) mit Hybridantrieb, dessen Antriebsstrang mindestens einen Verbrennungsmotor (5) und mindestens eine Elektromaschine (7) umfasst, bei dem für die Speicherung von Energie und die Versorgung von Verbrauchern des Bordnetzes eine Batterie (11) vorgesehen ist, die über einen Pulswechselrichter (10) mit der Elektromaschine (7) verbunden ist, dadurch gekennzeichnet, dass eine Diagnoseeinrichtung (2) vorgesehen ist, die Betriebskenngrößen der Elektromaschine (7), des Pulswechselrichters (10) und/oder von Signalleitungen erfasst und die bei Feststellung einer Störung der genannten Komponenten eine Betriebskenngröße des Verbrennungsmotors (5), wie insbesondere die Drehzahl, beeinflusst.Motor vehicle ( 1 ) with hybrid drive, the drive train at least one internal combustion engine ( 5 ) and at least one electric machine ( 7 ), in which, for the storage of energy and the supply of consumers of the electrical system, a battery ( 11 ) is provided, which via a pulse inverter ( 10 ) with the electric machine ( 7 ), characterized in that a diagnostic device ( 2 ), the operating characteristics of the electric machine ( 7 ), of the pulse inverter ( 10 ) and / or signal lines detected and the operating characteristic of the internal combustion engine upon detection of a malfunction of said components ( 5 ), in particular the speed, influenced. Kraftfahrzeug nach Anspruch 1, dadurch gekennzeichnet, dass für die Beeinflussung der Drehzahl des Verbrennungsmotors (5) eine Regelungseinrichtung (20) vorgesehen ist, der eingangsseitig ein Messwert des Batteriestroms der Batterie (11) und bei Feststellung einer Störung ein auf diese Störung hinweisendes Steuersignal zuführbar ist.Motor vehicle according to claim 1, characterized in that for influencing the rotation number of internal combustion engine ( 5 ) a control device ( 20 ), the input side, a measured value of the battery current of the battery ( 11 ) and upon detection of a disturbance indicative of this disturbance control signal can be fed. Kraftfahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Regelungseinrichtung (20) einen PI-Regler (22) umfasst.Motor vehicle according to one of the preceding claims, characterized in that the regulating device ( 20 ) a PI controller ( 22 ). Kraftfahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Regelungseinrichtung (20) eine Schalteinrichtung (23) umfasst, die bei Feststellung einer Störung der Elektromaschine einen Eingang eines für die Steuerung des Verbrennungsmotors vorgesehenen Steuergeräts mit dem Ausgang des PI-Reglers (22) verbindet.Motor vehicle according to one of the preceding claims, characterized in that the regulating device ( 20 ) a switching device ( 23 ), which upon detection of a fault of the electric machine, an input of a provided for the control of the internal combustion engine control unit with the output of the PI controller ( 22 ) connects. Kraftfahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eingangsseitig vor dem PI-Regler (22) ein Filter (21) angeordnet ist.Motor vehicle according to one of the preceding claims, characterized in that on the input side before the PI controller ( 22 ) a filter ( 21 ) is arranged. Kraftfahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der PI-Regler (22) durch ein Softwaremodul realisiert ist.Motor vehicle according to one of the preceding claims, characterized in that the PI controller ( 22 ) is realized by a software module. Verfahren für die Steuerung eines Kraftfahrzeugs (1) mit Hybridantrieb, dessen Antriebsstrang mindestens einen Verbrennungsmotor (5) und mindestens eine Elektromaschine (7) umfasst, bei dem für die Speicherung von Energie und die Versorgung von Verbrauchern des Bordnetzes eine Batterie (11) vorgesehen ist, die über einen Pulswechselrichter mit der Elektromaschine (7) verbunden ist, dadurch gekennzeichnet, dass die Elektromaschine (7), der Pulswechselrichter und ggf. diese Komponenten verbindende Signalleitungen auf das Auftreten von Störungen überwacht werden und dass bei Auftreten einer Störung eine Betriebskenngröße, insbesondere die Drehzahl des Verbrennungsmotors (5), derart beeinflusst wird, dass keine Überladung der Batterie (11) stattfindet.Method for controlling a motor vehicle ( 1 ) with hybrid drive, the drive train at least one internal combustion engine ( 5 ) and at least one electric machine ( 7 ), in which, for the storage of energy and the supply of consumers of the electrical system, a battery ( 11 ) is provided, which via a pulse inverter with the electric machine ( 7 ), characterized in that the electric machine ( 7 ), the pulse inverter and possibly these components connecting signal lines are monitored for the occurrence of disturbances and that when a fault occurs, an operating parameter, in particular the speed of the internal combustion engine ( 5 ) is influenced in such a way that no overcharging of the battery ( 11 ) takes place. Verfahren für die Steuerung eines Kraftfahrzeugs nach Anspruch 7, dadurch gekennzeichnet, dass ein Messwert des Stroms der Batterie (11) erfasst wird, dass dieser Messwert einem PI-Regler als Eingangsgröße zugeführt wird und dass die in Abhängigkeit von dieser Eingangsgröße ermittelte Ausgangsgröße des PI-Reglers einem Sollwert der Drehzahl des Verbrennungsmotors (5) überlagert wird.Method for the control of a motor vehicle according to claim 7, characterized in that a measured value of the current of the battery ( 11 ) is detected, that this measured value is fed to a PI controller as an input variable and that the output variable of the PI controller, which is determined as a function of this input variable, corresponds to a nominal value of the rotational speed of the internal combustion engine ( 5 ) is superimposed. Verfahren für die Steuerung eines Kraftfahrzeugs nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass für die Signale an dem Ausgang (22.2) des PI-Reglers (22) Grenzwerte (nObergrenze, nUntergrenze) vorgesehen sind und dass die zwischen diesen Grenzwerten liegenden Signale einem Sollwert (nSoll) der Drehzahl des Verbrennungsmotors (5) überlagert werden.Method for the control of a motor vehicle according to one of the preceding claims, characterized in that for the signals at the output ( 22.2 ) of the PI controller ( 22 ) Limit values (n upper limit , n lower limit ) are provided and that the signals lying between these limit values correspond to a nominal value (n setpoint ) of the rotational speed of the internal combustion engine ( 5 ) are superimposed.
DE102007047587A 2007-10-05 2007-10-05 Motor vehicle, has diagnosis device detecting operating characteristics of electrical machine, inverter and/or signal lines and controlling operating characteristics such as speed, of combustion engine during failure of components Withdrawn DE102007047587A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012092568A1 (en) 2010-12-31 2012-07-05 Cummins Inc. Accessory drive motor configuration

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012092568A1 (en) 2010-12-31 2012-07-05 Cummins Inc. Accessory drive motor configuration
EP2659106A4 (en) * 2010-12-31 2016-03-16 Cummins Inc Accessory drive motor configuration

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