DE102008027658A1 - Method for starting internal combustion engine of hybrid vehicle, involves starting internal combustion engine from drove operation mode, in which internal combustion engine is deactivated and is decoupled by coupling device - Google Patents

Method for starting internal combustion engine of hybrid vehicle, involves starting internal combustion engine from drove operation mode, in which internal combustion engine is deactivated and is decoupled by coupling device Download PDF

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Publication number
DE102008027658A1
DE102008027658A1 DE102008027658A DE102008027658A DE102008027658A1 DE 102008027658 A1 DE102008027658 A1 DE 102008027658A1 DE 102008027658 A DE102008027658 A DE 102008027658A DE 102008027658 A DE102008027658 A DE 102008027658A DE 102008027658 A1 DE102008027658 A1 DE 102008027658A1
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Germany
Prior art keywords
internal combustion
combustion engine
starting
drive machine
electric drive
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DE102008027658A
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German (de)
Inventor
Thomas Kress
Willibald Birzl
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Priority to DE102008027658A priority Critical patent/DE102008027658A1/en
Publication of DE102008027658A1 publication Critical patent/DE102008027658A1/en
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    • 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
    • B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
    • 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
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18027—Drive off, accelerating from standstill
    • 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
    • B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
    • 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
    • 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
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of 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
    • 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
    • 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
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • 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
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/11—Stepped gearings
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/006—Starting of engines by means of electric motors using a plurality of electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • 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
    • B60K6/26—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 motors or the generators
    • B60K2006/268—Electric drive motor starts the engine, i.e. used as starter motor
    • 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
    • B60W2510/242—Energy storage means for electrical energy
    • B60W2510/244—Charge state
    • 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
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • 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
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/10—Accelerator pedal position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0851—Circuits or control means specially adapted for starting of engines characterised by means for controlling the engagement or disengagement between engine and starter, e.g. meshing of pinion and engine gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/022—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2300/00—Control related aspects of engine starting
    • F02N2300/20—Control related aspects of engine starting characterised by the control method
    • F02N2300/2002—Control related aspects of engine starting characterised by the control method using different starting modes, methods, or actuators depending on circumstances, e.g. engine temperature or component wear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N99/00—Subject matter not provided for in other groups of this subclass
    • F02N99/002—Starting combustion engines by ignition means
    • F02N99/006—Providing a combustible mixture inside the cylinder
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • General Engineering & Computer Science (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Control Of Transmission Device (AREA)

Abstract

The method involves starting an internal combustion engine (2) from a drove operation mode, in which the internal combustion engine is deactivated and is decoupled by a coupling device (4) from the electrical drive machine. A high transmission stage is adjusted by an automatic drive unit (8) and the coupling device is controlled such that a partial force-fit coupling is made between electrical drive machine and internal combustion engine for tow starting of the internal combustion engine. An independent claim is included for a device for executing internal combustion engine starting method.

Description

Die Erfindung betrifft ein Verfahren zum Starten einer Brennkraftmaschine eines Hybridfahrzeugs gemäß dem Oberbegriff des Anspruchs 1.The The invention relates to a method for starting an internal combustion engine a hybrid vehicle according to the preamble of Claim 1.

Aus dem Stand der Technik sind bereits verschiedene Verfahren zum Starten bzw. Zustarten der Brennkraftmaschine eines fahrenden Hybridfahrzeugs bekannt. So beschreibt die DE 10 2006 022 395 A1 in ihrem einleitenden Teil ein Hybridfahrzeug mit Brennkraftmaschine und elektrischer Antriebsmaschine, wobei – ausgehend von einem elektrischen Fahrbetrieb mit deaktivierter und vom Antriebsstrang entkoppelter Brennkraftmaschine – durch einen so genannten Impulsstart die Brennkraftmaschine bei Bedarf gestartet und zugeschaltet werden kann. Hierfür wird zuerst die Drehzahl der antreibenden elektrischen Maschine erhöht und zeitgleich eine zwischen elektrischer Maschine und Getriebeeinrichtung angeordnete Trennkupplung derart angesteuert (schlupfend betrieben), dass das gemäß Fahrerwunsch vorgegebene Wunschmoment nicht beeinträchtigt wird. Anschließend wird eine zwischen elektrischer Maschine und Brennkraftmaschine angeordnete Trennkupplung geschlossen, um die Brennkraftmaschine zu beschleunigen und zuzustarten. Zeitgleich muss die getriebeseitige Trennkupplung derart angesteuert werden, dass der Schlupf reduziert und das eingestellte Fahrerwunschmoment beibehalten wird.Various methods for starting or starting the internal combustion engine of a moving hybrid vehicle are already known from the prior art. That's how it describes DE 10 2006 022 395 A1 in its introductory part, a hybrid vehicle with internal combustion engine and electric drive machine, wherein - starting from an electric drive with deactivated and decoupled from the drive train engine - by a so-called pulse start the engine can be started and switched on demand. For this purpose, the speed of the driving electric machine is first increased and at the same time a separating clutch arranged between the electric machine and the transmission device is operated in such a way (operated slipping) that the desired torque predetermined according to the driver's request is not impaired. Subsequently, a separating clutch arranged between the electric machine and the internal combustion engine is closed in order to accelerate and start the internal combustion engine. At the same time, the transmission-side clutch must be controlled so that the slip is reduced and the set driver's desired torque is maintained.

Als eine andere Maßnahme zum Starten der Brennkraftmaschine eines Hybridfahrzeugs, ausgehend von einem elektrischen Fahrbetrieb, wird gemäß der DE 10 2006 022 395 A1 vorgeschlagen, die bei einem Impulsstart der Brennkraftmaschine auftretende Drehzahländerung der auch zum Impulsstart eingebundenen elektrischen Antriebsmaschine durch kontinuierliche Änderungen der Getriebeübersetzung zu kompensieren. Hierfür wird bei einer aufgrund des Impulsstarts auftretenden Drehzahländerung (Verringerung der Drehzahl) das Übersetzungsverhältnis eines automatischen Getriebes entsprechend reduziert – es erfolgt eine automatische Schaltung in eine niedrigere Gangstufe (z. B. von Gangstufe 2 in Gangstufe 1).As another measure for starting the internal combustion engine of a hybrid vehicle, starting from an electric driving operation, according to the DE 10 2006 022 395 A1 proposed to compensate the occurring at a pulse start of the engine speed change of the integrated also for the pulse start electric drive machine by continuous changes in the gear ratio. For this purpose, at a speed change occurring due to the pulse start (reduction of the speed), the transmission ratio of an automatic transmission is reduced accordingly - there is an automatic shift to a lower gear (eg from gear 2 to gear 1).

Der Erfindung liegt die Aufgabe zugrunde, ein alternatives Verfahren zum Starten bzw. Zustarten einer Brennkraftmaschine eines Hybridfahrzeugs anzugeben. Insbesondere soll durch dass angegebene Verfahren ein möglichst schnelles Zustarten der Brennkraftmaschine ermöglicht werden. Ferner soll es zu keinen drehzahländerungsbedingten Komforteinbußen für die Fahrzeuginsassen kommen.Of the Invention is based on the object, an alternative method indicate for starting or Zustarten an internal combustion engine of a hybrid vehicle. In particular, should by the specified method as possible fast starting of the internal combustion engine are made possible. Furthermore, there should be no loss of comfort due to speed change come for the vehicle occupants.

Erfindungsgemäß wird die Aufgabe durch die Gesamtheit der Merkmale des Anspruchs 1 gelöst, während in den Unteransprüchen bevorzugte Weiterbildungen der Erfindung angegeben sind. Gemäß dem erfindungsgemäßen Verfahren wird bei einem so genannten Parallelhybridfahrzeug – welches sich insbesondere dadurch auszeichnet, dass die Antriebsmomente von elektrischer Maschine und Brennkraftmaschine bei gemeinsamem Betrieb der Antriebsmaschinen sich zu einem Gesamtantriebsmoment aufaddieren – ausgehend von einem Fahrbetriebsmodus, in dem die Brennkraftmaschine deaktiviert und über die Kupplungseinrichtung von der elektrischen Antriebsmaschine kraftmäßig getrennt ist, ein Starten bzw. Zustarten der Brennkraftmaschine erfolgt, indem über die Automatikgetriebeeinrichtung eine höhere Übersetzungsstufe eingestellt und die Kupplungseinrichtung derart angesteuert wird, dass zwischen elektrischer Antriebsmaschine und Brennkraftmaschine eine zumindest teilweise kraftschlüssige Kopplung zum Anschleppen der Brennkraftmaschine hergestellt wird. Mit Vorteil wird die Brennkraftmaschine bei Erreichen einer vorbestimmten Drehzahlschwelle zumindest durch die Zufuhr von Kraftstoff gestartet. Die erfindungsgemäße Vorgehensweise zum Zustarten der Brennkraftmaschine erfolgt mit Vorteil in Abhängigkeit von vorbestimmten Betriebsparametern – insbesondere sobald ein vorbestimmter elektrischer Fahrbereich verlassen wird. Dieser elektrische Fahrbereich definiert sich vorzugsweise in Abhängigkeit vom Ladezustand (SOC state of charge) der die elektrische Antriebsmaschine versorgenden Energiespeichereinrichtung und/oder in Abhängigkeit von der aktuell vorliegenden Fahrzeuggeschwindigkeit in Verbindung mit der aktuellen Lastanforderung (bzw. dem aktuellen Fahrerwunsch). Ferner ist vorgesehen, die Schaltpunkte für elektromotorisches Fahren unterschiedlich von denen für brennkraftmotorisches Fahren zu wählen. Auch ist aufgrund der Betriebsstrategie vorgesehen, sofern dies der Ladezustand der die elektrische Antriebsmaschine versorgenden Energiespeichereinrichtung zulässt, das Kraftfahrzeug in einem vorbestimmten unteren Geschwindigkeitsbereich (z. B. bis etwa 55 km/h) ausschließlich elektromotorisch anzutreiben und bei Überschreiten einer vorbestimmten Fahrzeuggeschwindigkeit die Brennkraftmaschine zu starten und das Kraftfahrzeug zumindest anteilig über die Brennkraftmaschine anzutreiben. Während des elektromotorischen Antriebs wird das Kraftfahrzeug z. B. ausschließlich in der ersten oder der zweiten Gangstufe betrieben, so dass jederzeit eine im Wesentlichen wirkungsgradoptimierte Betriebsweise der elektrischen Maschine realisiert werden kann.According to the invention the problem is solved by the entirety of the features of claim 1, while in the dependent claims preferred developments the invention are given. According to the invention Method is in a so-called parallel hybrid vehicle - which is characterized in particular by the fact that the drive torques of electrical Engine and internal combustion engine in common operation of the prime movers add up to a total drive torque - starting from a driving mode in which the internal combustion engine is deactivated and via the coupling device of the electrical Drive machine is separated by force, a Start or states of the internal combustion engine is done by over the automatic transmission device has a higher gear ratio set and the coupling device is driven in such a way that between electric drive machine and internal combustion engine an at least partially frictional coupling for towing the internal combustion engine is manufactured. Advantageously, the internal combustion engine at least by reaching a predetermined speed threshold the supply of fuel started. The procedure according to the invention for starting the internal combustion engine is advantageously carried out in dependence of predetermined operating parameters - especially as soon as is left predetermined electric driving range. This electrical Driving range is preferably defined as a function from the state of charge (SOC state) of the electric drive machine supplying energy storage device and / or in dependence from the current vehicle speed in connection with the current load request (or the current driver request). It is further provided, the switching points for electromotive Driving different from those for engine power Driving to choose. Also, due to the operating strategy provided that this is the state of charge of the electric drive machine supplying energy storage device allows the motor vehicle in a predetermined lower speed range (eg, to about 55 km / h) to be driven exclusively by electric motor and when a predetermined vehicle speed is exceeded to start the engine and the motor vehicle at least proportionately to drive the internal combustion engine. During the electromotive drive, the motor vehicle z. B. exclusively operated in the first or second gear, so anytime a substantially efficiency-optimized operation of the electrical Machine can be realized.

Durch das erfindungsgemäße Verfahren wird in besonders effizienter Weise ein Start bzw. Zustart der Brennkraftmaschine erreicht, indem das durch eine Hochschaltung freiwerdende rotatorische Moment der elektrischen Antriebsmaschine zum Antreiben der Brennkraftmaschine verwendet wird. Zusätzliche elektrische Energie zur Erhöhung der Drehzahl der elektrischen Antriebsmaschine im Vorfeld eines Brennkraftmaschinenzustarts ist nicht erforderlich.By means of the method according to the invention, a start or initiation of the internal combustion engine is achieved in a particularly efficient manner in that the rotational moment of the electric drive machine released by an upshift is used to drive the internal combustion engine. Additional electrical energy to increase the speed of the electric drive machine in advance of a Engine restarting is not required.

In einer Weiterbildung der Erfindung kann der Startvorgang der Brennkraftmaschine, bei dem diese durch das aufgrund der Hochschaltung freiwerdende rotatorische Moment der elektrischen Antriebsmaschine angetrieben wird, durch den Betrieb einer zusätzlichen separaten Startereinrichtung (z. B. einen herkömmlichen Riemenstarter) unterstützt werden. Alternativ oder zusätzlich kann der Startvorgang der Brennkraftmaschine auch durch einen so genannten Direktstart unterstützt werden, indem, entweder unmittelbar vor dem Antrieb der Brennkraftmaschine (also bei nicht rotierender Kurbelwelle) durch die elektrische Antriebsmaschine oder während des Antriebs durch die elektrische Antriebsmaschine, die Brennkraftmaschine durch Wiederaktivierung der Kraftstoffzufuhr mit einem Luft/Kraftstoffgemisch versorgt wird, welches dann gezündet wird.In a development of the invention, the starting process of the internal combustion engine, in which this is released by the due to the upshift rotational moment of the electric drive machine driven by operating an additional separate starter device (eg a conventional belt starter). Alternatively or additionally, the starting process of the internal combustion engine also be supported by a so-called direct start, by, either immediately before the drive of the internal combustion engine (ie with non-rotating crankshaft) by the electric drive machine or during the drive by the electric drive machine, the internal combustion engine by reactivating the fuel supply is supplied with an air / fuel mixture, which then ignited becomes.

Bevorzugt ist die Automatikgetriebeeinrichtung als Stufenautomatikgetriebe ausgeführt, wobei die Erhöhung der Gangstufe zur Erzeugung des freiwerdenden rotatorischen Moments der elektrischen Antriebsmaschine durch Einstellung einer Übersetzungsstufe um mindestens zwei Gangstufen erfolgt (z. B. von Gangstufe 2 in Gangstufe 4). Alternativ kann eine derartige Erhöhung der Übersetzung auch über eine stufenlose Automatikgetriebeeinrichtung – ein so genanntes CVT – dargestellt werden.Prefers is the automatic transmission device as a stepped automatic transmission executed, wherein increasing the gear to the Generation of the released rotational moment of the electric drive machine by setting a translation level by at least two speed steps takes place (eg from gear 2 to gear 4). Alternatively, such an increase in translation also via a continuously variable automatic transmission device - a so-called CVT - be presented.

Grundsätzlich wird beim Zustarten der Brennkraftmaschine – ausgehend von einem Fahrbetrieb, bei dem das Kraftfahrzeug ausschließlich durch die elektrische Antriebsmaschine angetrieben wird und bei dem die Brennkraftmaschine vom Antriebsstrang bzw. der Getriebeeingangswelle entkoppelt ist – zwischen zwei sich unterscheidenden Start- bzw. Zustartarten unterschieden. Dabei erfolgt die Auswahl der Zustartart gemäß der in einem zentralen Steuergerät hinterlegten Betriebsstrategie in Abhängigkeit von vorbestimmten Betriebsparametern wie dem Ladezustand der die elektrische Antriebsmaschine versorgenden Energiespeichereinrichtung und/oder der vorliegenden Fahrzeuggeschwindigkeit in Verbindung mit der aktuell vorliegenden Lastanforderung (bzw. der zeitlichen Änderung der Lastanforderung – z. B. Fahrpedalgradient).in principle when starting the internal combustion engine - starting from a driving operation in which the motor vehicle exclusively is driven by the electric drive machine and at the engine from the drive train or the transmission input shaft decoupled - between two different starting points or different types of benefits. The selection of the kind of support takes place according to the in a central control unit deposited operating strategy depending on predetermined Operating parameters such as the state of charge of the electric drive machine supplying energy storage device and / or the present Vehicle speed in conjunction with the currently available Load request (or the temporal change of the load request - z. B. accelerator pedal gradient).

Eine erste Startart erfolgt in Abhängigkeit von der Lastanforderung, wobei bei Erreichen einer vorbestimmten Mindest-Lastanforderung (bzw. bei Erreichen oder Überschreiten einer vorbestimmten Lastanforderungsänderung) der Start der Brennkraftmaschine schnellstmöglich durch Aktivierung einer separaten Startereinrichtung initiiert wird. Bei dieser Art von Start kann vielmehr unmittelbar eine Rückschaltung in eine niedrigere Gangstufe erfolgen, um die anstehende erhöhte Lastanforderung so schnell wie möglich umzusetzen.A first startup takes place depending on the load request, wherein upon reaching a predetermined minimum load request (or upon reaching or exceeding a predetermined load request change) the start of the engine as quickly as possible Activation of a separate starter device is initiated. at Rather, this type of launch can be directly a downshift take place in a lower gear to increase the upcoming Implement load request as soon as possible.

In einer zweiten Startart, wird die Brennkraftmaschine gemäß dem erfindungsgemäßen Verfahren gestartet, wobei in diesem Fall keine erhöhte Lastanforderung vorliegt. Diese Startart erfolgt insbesondere sobald der die elektrische Antriebsmaschine versorgende Energiespeicher eine vorbestimmte Ladeschwelle unterschreitet oder wenn aufgrund einer schleichenden Erhöhung der Lastanforderung (z. B. mit einem Fahrpedalgradienten kleiner einem vorbestimmten Grenzgradienten) ein Start der Brennkraftmaschine erforderlich wird bzw. sinnvoll erscheint.In a second startup, the internal combustion engine according to the inventive method started, wherein in In this case, there is no increased load request. These Startup takes place in particular as soon as the supplying the electric drive machine Energy storage falls below a predetermined charging threshold or if due to a creeping increase in the load requirement (eg with an accelerator pedal gradient less than a predetermined one Grenzgradienten) a start of the internal combustion engine is required or makes sense.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben. Es zeigen:One Embodiment of the invention is in the drawing and will be described in more detail below. It demonstrate:

1: den Antriebsstrang eines so genannten Parallelhybridfahrzeugs in einer schematischen Darstellung, und 1 : the drive train of a so-called parallel hybrid vehicle in a schematic representation, and

2: die Momentenkennlinie einer elektrischen Antriebsmaschine. 2 : the torque characteristic of an electric drive machine.

1 zeigt den Antriebsstrang eines so genannten Parallelhybridfahrzeugs, bei dem für den Fall, dass beide Antriebseinrichtungen (Elektromaschine und Brennkraftmaschine) zur Erzeugung von Antriebsmoment in den Antriebsstrang eingekoppelt sind und entsprechend angesteuert werden, das resultierende Gesamtantriebsmoment sich aus der Addition beider Einzelmomente ergibt. Der Antriebsstrang umfasst eine Brennkraftmaschine 2 zur Erzeugung eines ersten Antriebsmoments, eine über eine steuerbare Kupplungseinrichtung (im Folgenden auch als Trennkupplung bezeichnet) 4 mit der Kurbelwelle der Brennkraftmaschine 2 gekoppelte elektrische Maschine 6 zur Erzeugung eines zweiten Antriebsmoments sowie eine mit der elektrischen Maschine 6 ausgangsseitig verbundene bzw. an diese angekoppelte Automatikgetriebeeinrichtung 8. Dabei ist die elektrische Maschine 6 mit Vorteil über eine weitere steuerbare Trennkupplung 10 mit der Eingangswelle der Automatikgetriebeeinrichtung 8 verbunden. Des Weiteren ist die Brennkraftmaschine 2 bzw. deren Kurbelwelle (vorzugsweise an ihrem der Trennkupplung 4 abgekehrten Ende) über einen Riemenantrieb oder dergleichen mit einer separaten Startereinrichtung 12 gekoppelt. Zur Steuerung der Antriebsstrangkomponenten sind diese beispielsweise über ein Bussystem BUS mit einer zentralen Steuereinrichtung 14 verbunden, über die ein Start der Brennkraftmaschine 2 (etwa in Abhängigkeit von vorbestimmten Betriebsparametern) gemäß dem erfindungsgemäßen Verfahren durchgeführt werden kann. Der Rotor der elektrischen Maschine 6, die sowohl generatorisch als auch motorisch betrieben werden kann, ist zwischen Brennkraftmaschinenausgangswelle und Getriebeeingangswelle angeordnet. 1 shows the drive train of a so-called parallel hybrid vehicle, in which for the case that both drive means (electric machine and engine) are coupled to generate drive torque in the drive train and are controlled accordingly, the resulting total drive torque resulting from the addition of both individual moments. The powertrain includes an internal combustion engine 2 for generating a first drive torque, one via a controllable clutch device (also referred to below as a disconnect clutch) 4 with the crankshaft of the internal combustion engine 2 coupled electric machine 6 for generating a second drive torque and one with the electric machine 6 on the output side connected or coupled to this automatic transmission device 8th , Here is the electric machine 6 with advantage over another controllable separating clutch 10 with the input shaft of the automatic transmission device 8th connected. Furthermore, the internal combustion engine 2 or its crankshaft (preferably at its the disconnect clutch 4 turned-off end) via a belt drive or the like with a separate starter device 12 coupled. To control the powertrain components, these are for example via a bus system BUS with a central control device 14 connected, over which a start of the internal combustion engine 2 (As a function of predetermined operating parameters) can be performed according to the inventive method. The rotor of the electric machine 6 , which can be operated both as a generator and a motor, is arranged between the engine output shaft and transmission input shaft.

In 2 ist die Momentenkennlinie der elektrischen Maschine 6 schematisch dargestellt. Wie jede elektrische, motorisch betriebene Maschine liefert auch die elektrische Antriebsmaschine 6 unmittelbar nach dem Start (n > 0) ein sehr hohes Drehmoment Mmax – weshalb sich Elektromotoren grundsätzlich für den Anfahrbetrieb und den Fahrbetrieb bei kleinen Fahrzeuggeschwindigkeiten besonders gut eignen. Elektromotoren stellen daher drehmomenttechnisch gesehen eine ideale Ergänzung zur Brennkraftmaschine dar, da diese erst ab einer bestimmten höheren Drehzahl ein nennenswertes Drehmoment erzeugt. Im dargestellten Ausführungsbeispiel wird – ausgehend von einem rein elektrischen Fahrbetrieb – zu einem Zeitpunkt, zu dem die elektrische Maschine 6 bei einer bestimmten Gangstufe (z. B. Gangstufe 1) mit einer Drehzahl n1 von z. B. 3000 U/min betrieben wird und ein bestimmtes erstes Antriebsmoment M1 erzeugt, über die Steuereinrichtung 14 ein Hochschaltbefehl generiert und an die Automatikgetriebeeinrichtung 8 weitergeleitet. Durch die hierdurch eingeleitete automatische Hochschaltung (zu einem Zeitpunkt, zu dem die Leistungsanforderung bzw. deren Gradient kleiner/gleich einer vorbestimmten Schwelle ist und der Start der Brennkraftmaschine 6 aufgrund anderer vorbestimmter Bedingungen erfolgt) in eine höhere Gangstufe (z. B. von Gangstufe 1 in Gangstufe 2 oder 3) wird ein rotatorisches Moment der elektrischen Maschine 6 freigesetzt, welches gezielt zum Antrieb der Brennkraftmaschine 2 zu deren Start eingesetzt wird. Äquivalent zu der Erhöhung der Gangstufe und dem Freiwerden des rotatorischen Moments der elektrischen Maschine 6 wird die Drehzahl n der elektrischen Maschine 6 um ein entsprechendes Maß (analog zur Übersetzungsänderung) auf die Drehzahl n2 verringert. Durch die Reduzierung der Drehzahl n der elektrischen Maschine 6 wird diese in einem Betriebsbereich mit erhöhtem Drehmoment betrieben (Drehmoment M2 bei auf n2 reduzierter Drehzahl). So wird im Wesentlichen zeitgleich mit der Hochschaltung in eine höhere Gangstufe die bis zu diesem Zeitpunkt geöffnete Trennkupplung 4 zwischen Brennkraftmaschine 2 und elektrischer Maschine 6 geschlossen und das freigewordene rotatorische Moment (ΔM = M2 – M1) der elektrischen Maschine 6 zumindest teilweise auf die Kurbelwelle der Brennkraftmaschine 2 übertragen. Bei einem nicht fahrleistungsbedingten Wechsel der Antriebsquellen, von einem Antrieb ausschließlich durch die elektrische Maschine 6 auf einen Antrieb ausschließlich durch die Brennkraftmaschine oder auf einen Antrieb durch elektrische Maschine 6 und Brennkraftmaschine 2 gemeinsam, wird demnach automatisch eine Hochschaltung in der Getriebeeinrichtung 8 ausgelöst und die hierdurch freiwerdende kinetische Energie (rotatorisches Moment der elektrischen Maschine 6), die dem Getriebeeingang nebst elektrischer Maschine 6 und nebst einem etwaig vorhandenen Schwingungstilger entzogen werden muss, zum Start der Brennkraftmaschine 2 genutzt.In 2 is the torque characteristic of the elek machine 6 shown schematically. Like every electric, motor-driven machine, the electric drive machine also delivers 6 Immediately after the start (n> 0) a very high torque M max - which is why electric motors are particularly well suited for starting and driving at low vehicle speeds. Electric motors therefore represent an ideal complement to the internal combustion engine in terms of torque technology, since this generates a significant torque only above a certain higher speed. In the illustrated embodiment is - starting from a purely electric driving - at a time at which the electric machine 6 at a certain gear ratio (eg gear ratio 1) with a speed n1 of z. B. 3000 U / min is operated and generates a specific first drive torque M1, via the control device 14 generates an upshift command and to the automatic transmission device 8th forwarded. By thus initiated automatic upshift (at a time when the power requirement or its gradient is less than / equal to a predetermined threshold and the start of the internal combustion engine 6 due to other predetermined conditions) to a higher gear (eg, from gear 1 to gear 2 or 3) becomes a rotary moment of the electric machine 6 released, which specifically to drive the internal combustion engine 2 is used to their start. Equivalent to the increase in the gear stage and the release of the rotational moment of the electric machine 6 becomes the speed n of the electric machine 6 reduced by a corresponding amount (analogous to the ratio change) to the speed n2. By reducing the speed n of the electric machine 6 this is operated in an operating range with increased torque (torque M2 with speed reduced to n2). Thus, substantially simultaneously with the upshift to a higher gear, the up to this time open clutch 4 between internal combustion engine 2 and electric machine 6 closed and the released rotational moment (ΔM = M2 - M1) of the electric machine 6 at least partially on the crankshaft of the internal combustion engine 2 transfer. In the case of non-driving power-related change of the drive sources, of a drive exclusively by the electric machine 6 to a drive exclusively by the internal combustion engine or to a drive by electric machine 6 and internal combustion engine 2 together, therefore automatically an upshift in the transmission device 8th triggered and thereby released kinetic energy (rotational moment of the electric machine 6 ), the transmission input and electrical machine 6 and in addition to any existing vibration absorber must be withdrawn, the start of the internal combustion engine 2 used.

Durch das erfindungsgemäße Verfahren wird eine ohnehin im System vorhandene kinetische Energie in Betriebssituationen, in denen der Start der Brennkraftmaschine 2 nicht aus Fahrleistungsgründen erfolgt (also Fahrleistungsanforderung unterhalb einer vorbestimmten Schwelle), bereitgestellt bzw. freigesetzt,. Hierdurch kann zum einen der Kraftstoffverbrauch des Kraftfahrzeugs signifikant reduziert werden und zum anderen eine zusätzliche Startereirichtung 12 bei gleicher oder verbesserter Lebensdauer kleiner und kostengünstiger dimensioniert werden.By the method according to the invention is an existing anyway in the system kinetic energy in operating situations in which the start of the internal combustion engine 2 not done for driving performance reasons (ie driving performance requirement below a predetermined threshold), provided or released. As a result, on the one hand the fuel consumption of the motor vehicle can be significantly reduced and, on the other hand, an additional starting device 12 be sized smaller and cheaper at the same or improved life.

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • - DE 102006022395 A1 [0002, 0003] - DE 102006022395 A1 [0002, 0003]

Claims (8)

Verfahren zum Starten einer Brennkraftmaschine (2) eines Hybridfahrzeugs, – bei dem die von einer Brennkraftmaschine (2) und von einer elektrischen Antriebsmaschine (6) erzeugbaren Drehmomente je nach Betriebszustand einzeln oder additiv auf eine Getriebeeingangswelle einer Automatikgetriebeeinrichtung (8) wirken, – und bei dem die Brennkraftmaschine (2) und die elektrische Antriebsmaschine (6) je nach Betriebszustand über eine steuerbare Kupplungseinrichtung (4) miteinander koppelbar oder von einander trennbar sind, dadurch gekennzeichnet, dass – ausgehend von einem Fahrbetriebsmodus, in dem die Brennkraftmaschine (2) deaktiviert und über die Kupplungseinrichtung (4) von der elektrischen Antriebsmaschine (6) entkoppelt ist, ein Starten der Brennkraftmaschine (2) erfolgt, indem über die Automatikgetriebeeinrichtung (8) eine höhere Übersetzungsstufe eingestellt und die Kupplungseinrichtung (4) derart angesteuert wird, dass zwischen elektrischer Antriebsmaschine (6) und Brennkraftmaschine (2) eine zumindest teilweise kraftschlüssige Kopplung zum Anschleppen der Brennkraftmaschine (2) hergestellt wird.Method for starting an internal combustion engine ( 2 ) of a hybrid vehicle, - in which the of an internal combustion engine ( 2 ) and an electric drive machine ( 6 ) can be generated individually or in addition to a transmission input shaft of an automatic transmission device depending on the operating state ( 8th ) act, - and in which the internal combustion engine ( 2 ) and the electric drive machine ( 6 ) depending on the operating state via a controllable coupling device ( 4 ) can be coupled to each other or separated from one another, characterized in that - starting from a driving mode in which the internal combustion engine ( 2 ) and via the coupling device ( 4 ) of the electric drive machine ( 6 ) is decoupled, starting the internal combustion engine ( 2 ) is carried out by the automatic transmission device ( 8th ) set a higher gear ratio and the clutch device ( 4 ) is controlled such that between electric drive machine ( 6 ) and internal combustion engine ( 2 ) an at least partially non-positive coupling for towing the internal combustion engine ( 2 ) will be produced. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass während des Startvorgangs der Brennkraftmaschine (2) diese über eine zusätzliche Startereinrichtung (12) mit einem zusätzlichen Antriebsmoment zum Anschleppen beaufschlagt wird.A method according to claim 1, characterized in that during the starting process of the internal combustion engine ( 2 ) these via an additional starter device ( 12 ) is acted upon with an additional drive torque for towing. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass vor dem Einleiten des Startvorgangs der Brennkraftmaschine (2) oder während des Startvorgangs die Brennkraftmaschine (2) analog einem Direktstart mit einem Luft /Kraftstoffgemisch versorgt und dieses gezündet wird.Method according to one of the preceding claims, characterized in that before initiating the starting process of the internal combustion engine ( 2 ) or during the starting process, the internal combustion engine ( 2 ) supplied analogous to a direct start with an air / fuel mixture and this is ignited. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Automatikgetriebeeinrichtung (8) eine Stufenautomatikgetriebeeinrichtung ist und für die Einstellung einer höheren Übersetzungsstufe die Getriebeeinrichtung hoch geschaltet wird, insbesondere eine Hochschaltung um mindestens zwei Gangstufen erfolgt.Method according to one of the preceding claims, characterized in that the automatic transmission device ( 8th ) is a Stufenautomatikgetriebeeinrichtung and for setting a higher gear ratio, the transmission device is switched high, in particular an upshift to at least two gear steps takes place. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass zwischen zumindest zwei unterschiedlichen Zustartarten für die zu startende Brennkraftmaschine (2) unterschieden wird, wobei bei einer der Zustartarten ein Start der Brennkraftmaschine (2) aufgrund einer vorbestimmten Mindest-Fahrleistungsanforderung erfolgt.Method according to one of the preceding claims, characterized in that between at least two different types of support for the internal combustion engine to be started ( 2 ) is distinguished, wherein one of the Zustartarten a start of the internal combustion engine ( 2 ) takes place on the basis of a predetermined minimum driving performance requirement. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass bei einem Start der Brennkraftmaschine (2) aufgrund einer vorbestimmten Mindest-Fahrleistungsanforderung keine Einstellung einer höheren Übersetzungsstufe erfolgt.A method according to claim 5, characterized in that at a start of the internal combustion engine ( 2 ) due to a predetermined minimum driving power requirement no adjustment of a higher gear ratio is done. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass bei einem Start der Brennkraftmaschine (2) aufgrund einer vorbestimmten Mindest-Fahrleistungsanforderung kein Anschleppen der Brennkraftmaschine (2) durch Kopplung über die Kupplungseinrichtung (4) erfolgt und die Brennkraftmaschine ausschließlich über die zusätzliche Startereinrichtung (12) angeschleppt wird.A method according to claim 6, characterized in that at a start of the internal combustion engine ( 2 ) due to a predetermined minimum driving power requirement no towing the internal combustion engine ( 2 ) by coupling via the coupling device ( 4 ) and the internal combustion engine exclusively via the additional starter device ( 12 ) is towed. Vorrichtung zur Durchführung des Verfahrens nach einem der vorstehenden Ansprüche.Apparatus for carrying out the method according to one of the preceding claims.
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Cited By (16)

* Cited by examiner, † Cited by third party
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DE102010027828A1 (en) * 2010-04-15 2011-10-20 Bayerische Motoren Werke Aktiengesellschaft Motor car, has network and staring device connected with each other over separating device, so that energy is supplied form staring device to network, when voltage drop between voltages in network and staring device is exceed
DE102010039194A1 (en) 2010-08-11 2012-02-16 Zf Friedrichshafen Ag Method for operating power train of motor car, involves starting combustion engine by electrical machine during high external temperature, where temperature is smaller than threshold value during standstill of motor car
DE102010041631A1 (en) 2010-09-29 2012-03-29 Bayerische Motoren Werke Aktiengesellschaft Vehicle drive with at least two starting systems
WO2012059196A1 (en) * 2010-11-03 2012-05-10 Audi Ag Motor vehicle having a hybrid drive and method for selecting an electric motor and/or a starter for starting an internal combustion engine
DE102011003605A1 (en) * 2011-02-03 2012-08-09 Bayerische Motoren Werke Aktiengesellschaft Device and method for stabilizing a voltage applied to a first electrical load arranged in a vehicle electrical system of a vehicle
CN103153741A (en) * 2010-10-21 2013-06-12 日野自动车株式会社 Running mode switch control device, hybrid automobile, running mode switch control method, and program
DE102012102342A1 (en) * 2012-03-20 2013-09-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Procedure for starting the engine
DE102013225547A1 (en) 2013-12-11 2015-06-11 Zf Friedrichshafen Ag A method of operating a vehicle powertrain having an internal combustion engine, an electric machine, a transmission device, and an output
EP2708400A3 (en) * 2012-09-12 2015-11-11 GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG Method for controlling a hybrid power train
EP2754598A4 (en) * 2011-09-06 2016-04-27 Toyota Motor Co Ltd Hybrid vehicle control apparatus
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DE102017219539A1 (en) * 2017-11-03 2019-05-09 Ford Global Technologies, Llc Method for starting an internal combustion engine of a hybrid drive and hybrid drive for performing such a method
DE102018210540A1 (en) * 2018-06-28 2020-01-02 Zf Friedrichshafen Ag Method and control device for operating a drive train
CN111757829A (en) * 2018-01-04 2020-10-09 纬湃科技有限责任公司 Control apparatus and method for controlling operations of internal combustion engine and motor in hybrid vehicle
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DE102010027828A1 (en) * 2010-04-15 2011-10-20 Bayerische Motoren Werke Aktiengesellschaft Motor car, has network and staring device connected with each other over separating device, so that energy is supplied form staring device to network, when voltage drop between voltages in network and staring device is exceed
DE102010039194A1 (en) 2010-08-11 2012-02-16 Zf Friedrichshafen Ag Method for operating power train of motor car, involves starting combustion engine by electrical machine during high external temperature, where temperature is smaller than threshold value during standstill of motor car
DE102010041631A1 (en) 2010-09-29 2012-03-29 Bayerische Motoren Werke Aktiengesellschaft Vehicle drive with at least two starting systems
WO2012041427A1 (en) 2010-09-29 2012-04-05 Bayerische Motoren Werke Aktiengesellschaft Vehicle drive having at least two starting systems
DE102010041631B4 (en) * 2010-09-29 2016-12-15 Bayerische Motoren Werke Aktiengesellschaft Vehicle drive with at least two starting systems
AU2011318921B2 (en) * 2010-10-21 2016-02-04 Hino Motors, Ltd. Running mode switch control device, hybrid automobile, running mode switch control method, and program
CN103153741A (en) * 2010-10-21 2013-06-12 日野自动车株式会社 Running mode switch control device, hybrid automobile, running mode switch control method, and program
EP2631144A1 (en) * 2010-10-21 2013-08-28 Hino Motors Ltd. Running mode switch control device, hybrid automobile, running mode switch control method, and program
CN103153741B (en) * 2010-10-21 2016-03-30 日野自动车株式会社 Driving mode switching control, hybrid vehicle, driving mode method for handover control
EP2631144A4 (en) * 2010-10-21 2014-06-18 Hino Motors Ltd Running mode switch control device, hybrid automobile, running mode switch control method, and program
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EP2639362A4 (en) * 2010-10-27 2017-08-09 Yanmar Co., Ltd. Power transmission device
CN103228518A (en) * 2010-11-03 2013-07-31 奥迪股份公司 A motor vehicle having a hybrid drive and a method for selecting an electric motor and/or a starter for starting an internal combustion engine
CN103228518B (en) * 2010-11-03 2016-08-10 奥迪股份公司 There is the motor vehicles of hybrid drive and for selecting motor and/or starter motor to the method starting explosive motor
WO2012059196A1 (en) * 2010-11-03 2012-05-10 Audi Ag Motor vehicle having a hybrid drive and method for selecting an electric motor and/or a starter for starting an internal combustion engine
US9102328B2 (en) 2010-11-03 2015-08-11 Audi Ag Motor vehicle having a hybrid drive and method for selecting an electric machine and/or a starter for starting a combustion engine
DE102011003605A1 (en) * 2011-02-03 2012-08-09 Bayerische Motoren Werke Aktiengesellschaft Device and method for stabilizing a voltage applied to a first electrical load arranged in a vehicle electrical system of a vehicle
US9434256B2 (en) 2011-02-03 2016-09-06 Bayerische Motoren Werke Aktiengesellschaft Arrangement and method for stabilizing a voltage applied to a first electric consuming device arranged in an onboard power supply system of a vehicle
EP2754598A4 (en) * 2011-09-06 2016-04-27 Toyota Motor Co Ltd Hybrid vehicle control apparatus
DE102012102342A1 (en) * 2012-03-20 2013-09-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Procedure for starting the engine
US9175633B2 (en) 2012-03-20 2015-11-03 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Engine starting method
EP2708400A3 (en) * 2012-09-12 2015-11-11 GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG Method for controlling a hybrid power train
CN103661362B (en) * 2012-09-12 2018-02-16 格特拉格传动机构和齿轮工厂赫尔曼·哈根迈尔有限公司&两合公司 Method for controlling hybrid power transmission system
DE102013225547A1 (en) 2013-12-11 2015-06-11 Zf Friedrichshafen Ag A method of operating a vehicle powertrain having an internal combustion engine, an electric machine, a transmission device, and an output
DE102017219539A1 (en) * 2017-11-03 2019-05-09 Ford Global Technologies, Llc Method for starting an internal combustion engine of a hybrid drive and hybrid drive for performing such a method
CN111757829A (en) * 2018-01-04 2020-10-09 纬湃科技有限责任公司 Control apparatus and method for controlling operations of internal combustion engine and motor in hybrid vehicle
CN111757829B (en) * 2018-01-04 2024-03-22 纬湃科技有限责任公司 Control apparatus and method for controlling operation of internal combustion engine and motor in hybrid vehicle
DE102018210540A1 (en) * 2018-06-28 2020-01-02 Zf Friedrichshafen Ag Method and control device for operating a drive train
WO2021084172A1 (en) * 2019-10-31 2021-05-06 Psa Automobiles Sa Method for starting an internal combustion engine in a hybrid traction architecture
FR3102809A1 (en) * 2019-10-31 2021-05-07 Psa Automobiles Sa METHOD OF CONTROL OF A STARTING OF A THERMAL ENGINE IN A HYBRID TRACTION ARCHITECTURE
DE102020201374A1 (en) 2020-02-05 2021-08-05 Zf Friedrichshafen Ag Method for operating a hybrid vehicle

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