DE102013220544A1 - Method for controlling hybrid drive train in motor vehicle, involves recognizing brake as closed when operating parameter in form of dynamic friction coefficient variable is within predefined interval during pulse start - Google Patents
Method for controlling hybrid drive train in motor vehicle, involves recognizing brake as closed when operating parameter in form of dynamic friction coefficient variable is within predefined interval during pulse start Download PDFInfo
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- DE102013220544A1 DE102013220544A1 DE201310220544 DE102013220544A DE102013220544A1 DE 102013220544 A1 DE102013220544 A1 DE 102013220544A1 DE 201310220544 DE201310220544 DE 201310220544 DE 102013220544 A DE102013220544 A DE 102013220544A DE 102013220544 A1 DE102013220544 A1 DE 102013220544A1
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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
- 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
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- 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
- B60K6/485—Motor-assist type
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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
- 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
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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
- 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
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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
- 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
- B60W10/115—Stepped gearings with planetary gears
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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
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- 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
- F02N15/003—Starters comprising a brake mechanism
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- 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
- F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
- F02N15/043—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the gearing including a speed reducer
- F02N15/046—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the gearing including a speed reducer of the planetary type
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- 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
- F02N5/00—Starting apparatus having mechanical power storage
- F02N5/02—Starting apparatus having mechanical power storage of spring type
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- 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
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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
- 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
- B60W2050/0062—Adapting control system settings
- B60W2050/0075—Automatic parameter input, automatic initialising or calibrating means
- B60W2050/0083—Setting, resetting, calibration
- B60W2050/0087—Resetting start and end points of actuator travel
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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
- 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
- B60W2050/0062—Adapting control system settings
- B60W2050/0075—Automatic parameter input, automatic initialising or calibrating means
- B60W2050/0083—Setting, resetting, calibration
- B60W2050/0088—Adaptive recalibration
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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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
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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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/08—Electric propulsion units
- B60W2510/081—Speed
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- 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
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- 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
- F02N15/025—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch of the friction type
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- 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
- F02N15/08—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing being of friction type
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- 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
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/02—Parameters used for control of starting apparatus said parameters being related to the engine
- F02N2200/022—Engine speed
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- 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
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/04—Parameters used for control of starting apparatus said parameters being related to the starter motor
- F02N2200/041—Starter speed
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- 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
- F02N2300/2011—Control involving a delay; Control involving a waiting period before engine stop or engine start
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- 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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Steuerung eines hybridischen Antriebsstrangs mit einer Brennkraftmaschine mit einer Kurbelwelle und einer in einer Riemenscheibenebene der Brennkraftmaschine angeordneten und mittels eines schaltbaren Planetengetriebes mit der Kurbelwelle in Wirkeingriff stehenden Elektromaschine, wobei das Planetengetriebe während eines Startvorgangs der Brennkraftmaschine von einem eine zwischen einem Hohlrad des Planetengetriebes und einem drehfest angeordneten Gehäuse angeordnete Bremse betätigenden Aktor über einen Aktorweg reibschlüssig und abhängig von einem Schlüsselstart bei stehendem Hohlrad oder einem Impulsstart bei sich drehendem Hohlrad mittels unterschiedlicher Betriebsparameter geschaltet wird.The invention relates to a method for controlling a hybrid powertrain with an internal combustion engine having a crankshaft and arranged in a pulley plane of the internal combustion engine and by means of a switchable planetary gear with the crankshaft in operative engagement electric machine, wherein the planetary gear during a starting operation of the internal combustion engine of a between a Ring gear of the planetary gear and a rotatably arranged housing arranged brake actuating actuator via a Aktorweg frictionally engaged and dependent on a key start at stationary ring gear or a pulse start with rotating ring gear by means of different operating parameters.
Hybridische Antriebsstränge mit einer in die Riemenscheibe einer Brennkraftmaschine eingebundenen Elektromaschine sind beispielsweise aus der
Aufgabe der Erfindung ist daher, ein Verfahren vorzuschlagen, bei dem ein gattungsgemäßer hybridischer Antriebsstrang dauerhaft und ohne Verschleiß der Reibbeläge der Bremse und ohne Überbelastung des Aktors betrieben werden kann. The object of the invention is therefore to propose a method in which a generic hybrid powertrain can be operated permanently and without wear of the friction linings of the brake and without overloading the actuator.
Die Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Die diesem untergeordneten Ansprüche geben vorteilhafte Ausführungsformen wieder.The object is solved by the features of
Das vorgeschlagene Verfahren dient der Steuerung eines hybridischen Antriebsstrangs mit einer Brennkraftmaschine mit einer Kurbelwelle und einer in einer Riemenscheibenebene der Brennkraftmaschine angeordneten und mittels eines schaltbaren Planetengetriebes mit der Kurbelwelle in Wirkeingriff stehenden Elektromaschine. Hierbei wird das Planetengetriebe während eines Startvorgangs der Brennkraftmaschine von einem eine zwischen einem Hohlrad des Planetengetriebes und einem drehfest angeordneten Gehäuse angeordnete Bremse betätigenden Aktor über einen Aktorweg reibschlüssig geschaltet. In vorgeschlagener Weise wird der Startvorgang bei bevorzugt geschlossener Bremse durchgeführt. Ein geschlossener Zustand der Bremse wird dabei beispielsweise von einer in einem Steuergerät implementierten Routine erkannt, wenn bei einem Schlüsselstart ein erster Betriebsparameter in Form einer Differenzdrehzahl zwischen Hohlrad und Gehäuse innerhalb einer vorgegebenen Schwelle der Differenzdrehzahl beziehungsweise bei einem Impulsstart ein zweiter Betriebsparameter in Form einer dynamischen Reibwertgröße innerhalb eines vorgegebenen Intervalls liegt. Unter einem Schlüsselstart ist dabei ein Start der stehenden Brennkraftmaschine bei stehender Elektromaschine, beispielsweise ein Kaltstart zu verstehen. Hierbei startet der Fahrer die Brennkraftmaschine durch einen Schlüssel oder eine entsprechende Einrichtung wie beispielsweise einen Startknopf oder dergleichen. Während eines Impulsstarts erfolgt der Start der Brennkraftmaschine bei bereits drehendem Rotor der Elektromaschine, wenn beispielsweise nach einer vorübergehenden Stilllegung des Kraftfahrzeugs an einer Ampel, einem Bahnübergang oder dergleichen und zum Antrieb des Klimakompressors aktivierter Elektromaschine ein Wiederstart erfolgen soll. Weiterhin kann bei niedrigen Umgebungstemperaturen und damit schwer zu startender Brennkraftmaschine die Elektromaschine vorab beschleunigt werden. The proposed method is used to control a hybrid powertrain with an internal combustion engine having a crankshaft and an arranged in a pulley plane of the internal combustion engine and by means of a switchable planetary gear with the crankshaft in operative engagement electric machine. In this case, the planetary gear during a starting operation of the internal combustion engine is frictionally engaged by a one between a ring gear of the planetary gear and a rotatably arranged housing arranged brake actuating actuator via an actuator. In a proposed manner, the starting process is performed at preferably closed brake. In this case, a closed state of the brake is recognized, for example, by a routine implemented in a control unit, if, during a key start, a first operating parameter in the form of a differential speed between ring gear and housing within a predetermined threshold of the differential rotational speed or at pulse start a second operating parameter in the form of a dynamic friction coefficient within a given interval. A key start is understood to be a start of the stationary internal combustion engine when the electric machine is stationary, for example a cold start. Here, the driver starts the engine by a key or a corresponding device such as a start button or the like. During an impulse start, the engine is started when the rotor of the electric machine is already rotating, if, for example, after a temporary shutdown of the motor vehicle at a traffic light, a railroad crossing or the like and for driving the air conditioning compressor activated electric machine to restart. Furthermore, at low ambient temperatures and thus hard to start the engine, the electric machine can be accelerated in advance.
Die während eines Schlüsselstarts zur Beurteilung einer geschlossenen Bremse herangezogene Differenzdrehzahl kann ohne weitere Sensoren aus der Rotordrehzahl der Elektromaschine gewonnen werden, da sich unter Berücksichtigung der Übersetzung des Planetengetriebes daraus die Drehzahl des Hohlrads ermitteln lässt. Der Reibpartner des Hohlrads ist gehäusefest, so dass sich eine einen Schlupf der Bremse wiedergebende Differenzdrehzahl aus der Rotordrehzahl ergibt. Wird im Rahmen der Messgenauigkeit der Rotordrehzahl, beispielsweise bei Differenzdrehzahlen kleiner 100 1/min, bevorzugt kleiner 10 1/min ein ausreichend kleiner Schlupf ermittelt, wird eine geschlossene Bremse angenommen. Bei größeren Differenzdrehzahlen kann der Schlupf durch entsprechendes weiteres Schließen der Bremse mittels des Aktors vermindert werden. Alternativ oder zusätzlich wird eine notwendige Korrektur des Aktorwegs ermittelt und zur Adaption des Aktorwegs bei nachfolgenden Startvorgängen beim Schlüsselstart im Steuergerät abgespeichert. Ist keine Drehzahldifferenz bei einem vorgegebenen Aktorweg zum Schließen der Bremse messbar, wird sofort oder in einem nachfolgenden Startvorgang der Aktorweg korrigiert, um eine messbare Drehzahldifferenz innerhalb der Schwelle einzustellen und damit eine Überanpressung der Bremse unter hoher Belastung des Aktors zu vermeiden. Eine entsprechende Korrektur des Aktorwegs kann ebenfalls abgespeichert und zur Adaption des Aktorwegs herangezogen werden.The differential speed used during a key start to assess a closed brake can be obtained from the rotor speed of the electric machine without any further sensors, since, taking into account the ratio of the planetary gear, the rotational speed of the ring gear can be determined therefrom. The friction partner of the ring gear is fixed to the housing, so that there is a differential speed from the rotor speed that reflects the slip of the brake. Is within the measurement accuracy of the rotor speed, for example, at differential speeds less than 100 1 / min, preferably less than 10 1 / min sufficiently small slip determined, a closed brake is assumed. For larger differential speeds, the slip can be reduced by appropriately further closing the brake by means of the actuator. Alternatively or additionally, a necessary correction of the actuator travel is determined and stored for adaptation of the Aktorwegs in subsequent startup operations at the key start in the control unit. If no rotational speed difference can be measured for a given actuator travel for closing the brake, the actuator travel is corrected immediately or in a subsequent starting process in order to set a measurable rotational speed difference within the threshold and thus to avoid overpressing the brake under high load on the actuator. A corresponding correction of the Aktorwegs can also be stored and used to adapt the Aktorwegs.
Bei der Durchführung eines Impulsstarts dreht der Rotor bereits bei stehender Brennkraftmaschine. Hierdurch dreht auch das Hohlrad gegenüber dem drehfest angeordneten Gehäuse. Bei dem Impulsstart soll das Planetengetriebe umgeschaltet werden, das heißt, mittels der Bremse Hohlrad und Gehäuse drehfest gekoppelt werden. Zur Beurteilung des geschlossenen Zustands der Bremse wird überprüft, ob ein zweiter Betriebsparameter in Form einer dynamischen Reibwertgröße innerhalb eines vorgegebenen Intervalls liegt. Hierdurch kann das Schließverhalten der Bremse auch bei anfangs großer Drehzahldifferenz zwischen Hohlrad und Gehäuse während eines Impulsstarts beurteilt werden. Gemäß einer vorteilhaften Ausführungsform kann das Intervall ein Zeitintervall eines Abbaus der Differenzdrehzahl sein. Ist das Zeitintervall größer als das Intervall, wird der Aktorweg in Richtung einer höheren Anpressung korrigiert, wird das Zeitintervall unterschritten, wird wegen einer drohenden Überanpressung die Bremse weniger weit zugestellt, der Aktorweg also verringert. In einer alternativen Ausführungsform kann das Intervall als Bremsmomentintervall eines Bremsmoments der Bremse dargestellt werden. Das Bremsmoment kann dabei wie folgt ermittelt werden: mit
- JHohl
- – Massenträgheit des Hohlrads
- ω .Hohl
- – Winkelbeschleunigung des Hohlrads
- JVerbr
- – Massenträgheit der Brennkraftmaschine
- ω .Verbr
- – Winkelbeschleunigung der Brennkraftmaschine
- MVerbr
- – Moment der Brennkraftmaschine beim Starten entsprechend dem Schleppmoment
- i0
- – Standübersetzung des Planetengetriebes, beispielsweise i = –2
- J hollow
- - Inertia of the ring gear
- ω. Hollow
- - Angular acceleration of the ring gear
- J burn
- - Inertia of the internal combustion engine
- ω. Consumed
- - Angular acceleration of the internal combustion engine
- M burn
- - Moment of the internal combustion engine when starting according to the drag torque
- i 0
- - Stand translation of the planetary gear, for example, i = -2
Da die Massenträgheit des Hohlrads wesentlich kleiner ist als die des Verbrennungsmotors, kann sie vernachlässigt werden. Damit vereinfacht sich o. g. Gleichung zu: Since the inertia of the ring gear is substantially smaller than that of the internal combustion engine, it can be neglected. This simplifies the above equation to:
Gemäß einer vorteilhaften Weiterbildung des Verfahrens kann, wenn während eines Startvorgangs der Betriebsparameter außerhalb des zugehörigen Intervalls liegt, ein eingestellter aktueller Aktorweg um einen vorgegebenen Betrag zur Erzielung eines innerhalb dieses Intervalls liegenden Betriebsparameters zu einem adaptierten Aktorweg korrigiert und der adaptierte Aktorweg beim darauffolgenden Startvorgang für dieses Intervall eingestellt werden. Dies bedeutet, dass alternativ oder zusätzlich zu einer sofortigen Korrektur des Schließzustands der Bremse durch Nachregelung des Aktorwegs eine entsprechende Korrektur des Aktorwegs gegenüber einem kalibrierten oder zuvor adaptierten Aktorweg zur Adaptation des ursprünglichen Aktorwegs eingesetzt wird. Hierbei kann eine Korrektur des Aktorwegs jeweils einer Betriebsgröße mittels kleiner, diskreter und pro Adaptionsvorgang gleicher Korrekturschritte des Aktorwegs vorgesehen sein, so dass ein Betrag der Korrektur beziehungsweise Adaption des Aktorwegs in vorgegebenen Schritten pro Startvorgang erfolgt. Es kann weiterhin insbesondere zur Darstellung einer robusten Ausbildung der Adaption des Aktorwegs vorgesehen sein, nach einer Korrektur des Aktorwegs in mehreren nacheinander folgenden Startvorgängen in dieselbe Richtung bei innerhalb des Intervalls liegender Betriebsgröße eine weitere Korrektur dieses Aktorwegs für mehrere Startvorgänge auszusetzen. According to an advantageous development of the method, if the operating parameter is outside the associated interval during a starting operation, a set current actuator travel can be corrected by a predetermined amount to achieve an operating parameter within this interval to an adapted actuator travel, and the adapted actuator travel during the subsequent starting process for this Interval can be set. This means that as an alternative or in addition to an immediate correction of the closed state of the brake by adjusting the Aktorwegs a corresponding correction of Aktorwegs against a calibrated or previously adapted Aktorweg is used to adapt the original Aktorwegs. In this case, a correction of the actuator travel in each case an operating variable by means of small, discrete and per adaptation process equal correction steps of Aktorwegs be provided so that an amount of correction or adaptation of Aktorwegs takes place in predetermined steps per startup. It may further be provided, in particular for the presentation of a robust embodiment of the adaptation of the actuator travel, to suspend a further correction of this actuator travel for a plurality of starting operations after a correction of the actuator travel in a plurality of consecutively following starting operations in the same direction when the operating variable lies within the interval.
Die Erfindung wird anhand der in den
Die
Die
Die
Die
Die
Die
In den untereinander bei gleichen Zeitachsen dargestellten
In den
Die
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Antriebsstrang powertrain
- 22
- Brennkraftmaschine Internal combustion engine
- 33
- Elektromaschine electric machine
- 44
- Kurbelwelle crankshaft
- 55
- Rotor rotor
- 66
- Umschlingungsmitteltrieb Umschlingungsmitteltrieb
- 77
- Planetengetriebe planetary gear
- 88th
- Steg web
- 99
- Planetenräder planetary gears
- 1010
- Sonnenrad sun
- 1111
- Riemen belt
- 1212
- Hohlrad ring gear
- 1313
- Aktor actuator
- 1414
- Bremse brake
- 1515
- Gehäuse casing
- 1616
- Kurve Curve
- 16a16a
- Kurve Curve
- 16b 16b
- Kurve Curve
- 16c16c
- Kurve Curve
- 1717
- Kurve Curve
- 17a17a
- Kurve Curve
- 17b17b
- Kurve Curve
- 17c17c
- Kurve Curve
- 1818
- Linie line
- 1919
- Kurve Curve
- 19a19a
- Kurve Curve
- 19b19b
- Kurve Curve
- 19c19c
- Kurve Curve
- 2020
- Kurve Curve
- 20a20a
- Kurve Curve
- 20b20b
- Kurve Curve
- 20c20c
- Kurve Curve
- 2121
- Schwelle threshold
- 2222
- Schwelle threshold
- 2323
- Kurve Curve
- 23a23a
- Kurve Curve
- 23b23b
- Kurve Curve
- 2424
- Kurve Curve
- 24a24a
- Kurve Curve
- 24b24b
- Kurve Curve
- 2525
- Kurve Curve
- 25a25a
- Kurve Curve
- 25b25b
- Kurve Curve
- nn
- Drehzahl rotation speed
- n1 n 1
- Drehzahl rotation speed
- n2 n 2
- Drehzahl rotation speed
- tt
- Zeit Time
- t1 t 1
- Zeitpunkt time
- t2 t 2
- Zeitpunkt time
- t3 t 3
- Zeitpunkt time
- t4 t 4
- Zeitpunkt time
- t5 t 5
- Zeitpunkt time
- Δt.delta.t
- Intervall interval
- Δtmax Δ tmax
- Zeitintervall time interval
- Δtmin Δtmin
- Zeitintervall time interval
- xx
- Aktorweg actuator travel
- xi x i
- idealer Aktorweg ideal actuator path
- x1 x 1
- Aktorweg actuator travel
- x2 x 2
- Aktorweg actuator travel
- x3 x 3
- Aktorweg actuator travel
- x4 x 4
- Aktorweg actuator travel
- x5 x 5
- Aktorweg actuator travel
- x6 x 6
- Aktorweg actuator travel
- x7 x 7
- Aktorweg actuator travel
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102011087697 A1 [0002] DE 102011087697 A1 [0002]
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DE201310220544 DE102013220544A1 (en) | 2012-12-07 | 2013-10-11 | Method for controlling hybrid drive train in motor vehicle, involves recognizing brake as closed when operating parameter in form of dynamic friction coefficient variable is within predefined interval during pulse start |
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DE102011087697A1 (en) | 2010-12-24 | 2012-06-28 | Schaeffler Technologies Gmbh & Co. Kg | Method for controlling a switchable planetary gear in a pulley plane of a drive train |
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DE102011087697A1 (en) | 2010-12-24 | 2012-06-28 | Schaeffler Technologies Gmbh & Co. Kg | Method for controlling a switchable planetary gear in a pulley plane of a drive train |
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