DE102019204785A1 - Method for operating a drive train for a motor vehicle - Google Patents
Method for operating a drive train for a motor vehicle Download PDFInfo
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- DE102019204785A1 DE102019204785A1 DE102019204785.8A DE102019204785A DE102019204785A1 DE 102019204785 A1 DE102019204785 A1 DE 102019204785A1 DE 102019204785 A DE102019204785 A DE 102019204785A DE 102019204785 A1 DE102019204785 A1 DE 102019204785A1
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- combustion engine
- internal combustion
- torque converter
- drive train
- coupling device
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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
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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
- B60K6/38—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
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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
- B60K6/38—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
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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
- B60W10/023—Fluid clutches
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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
- B60W10/024—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches including control of torque converters
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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
- B60W10/024—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches including control of torque converters
- B60W10/026—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches including control of torque converters of lock-up clutches
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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
- 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
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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
- B60K2006/4825—Electric machine connected or connectable to gearbox input shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/42—Clutches or brakes
- B60Y2400/421—Dog type clutches or brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/42—Clutches or brakes
- B60Y2400/424—Friction clutches
- B60Y2400/4244—Friction clutches of wet type, e.g. using multiple lamellae
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/42—Clutches or brakes
- B60Y2400/426—Hydrodynamic couplings, e.g. torque converters
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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)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Hybrid Electric Vehicles (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Arrangement Of Transmissions (AREA)
Abstract
Verfahren zum Betreiben eines Antriebsstrangs (1) für ein Kraftfahrzeug, welcher Antriebsstrang (1) wenigstens einen Verbrennungsmotor (2), eine elektrische Maschine (3), einen eine bewegbare oder bewegte Masse umfassenden Drehmomentwandler (4) und wenigstens eine Kupplungseinrichtung (5) zur lösbaren Verbindung des Verbrennungsmotors (2) mit dem Drehmomentwandler (4) aufweist, wobei zum Starten des Verbrennungsmotors (2) über die wenigstens eine Kupplungseinrichtung (5) eine Kopplung zwischen dem Drehmomentwandler (4) und dem Verbrennungsmotor (2) hergestellt wird, wobei eine für das Zustarten des Verbrennungsmotors (2) erforderliche Bewegung zumindest teilweise von der bewegten Masse wenigstens einer Komponente des Drehmomentwandlers (4) bereitgestellt wird.A method for operating a drive train (1) for a motor vehicle, which drive train (1) has at least one internal combustion engine (2), an electrical machine (3), a torque converter (4) comprising a movable or moving mass and at least one clutch device (5) for releasable connection of the internal combustion engine (2) to the torque converter (4), wherein for starting the internal combustion engine (2) via the at least one coupling device (5) a coupling between the torque converter (4) and the internal combustion engine (2) is established, wherein a movement required for starting the internal combustion engine (2) is provided at least partially by the moving mass of at least one component of the torque converter (4).
Description
Die Erfindung betrifft ein Verfahren zum Betreiben eines Antriebsstrangs für ein Kraftfahrzeug, welcher Antriebsstrang wenigstens einen Verbrennungsmotor und eine elektrische Maschine aufweist.The invention relates to a method for operating a drive train for a motor vehicle, which drive train has at least one internal combustion engine and one electrical machine.
Derartige Antriebsstränge sind grundsätzlich aus dem Stand der Technik bekannt. Üblicherweise kann dabei mittels einer Kupplungseinrichtung der Verbrennungsmotor abgekoppelt bzw. angekoppelt werden, um das Kraftfahrzeug zusätzlich oder alternativ zu dem über die elektrische Maschine bewirkten Antrieb anzutreiben. Beispielsweise ist es möglich, den Verbrennungsmotor durch Schließen einer entsprechenden Kupplungseinrichtung zu starten, indem die elektrische Maschine dazu entsprechend Energie für das Zustarten des Verbrennungsmotors bereitstellt.Such drive trains are basically known from the prior art. Usually, the internal combustion engine can be decoupled or coupled by means of a coupling device in order to drive the motor vehicle in addition or as an alternative to the drive brought about by the electrical machine. For example, it is possible to start the internal combustion engine by engaging a corresponding clutch device, in that the electrical machine provides the appropriate energy for starting the internal combustion engine.
Dabei ist es erforderlich, dass die elektrische Maschine entsprechend ausgelegt ist, um in definierten Betriebszuständen, insbesondere über alle Betriebszustände hinweg, ausreichend Leistungsreserven zu besitzen, um den Verbrennungsmotor zuverlässig zustarten zu können. Dies hat zur Folge, dass die elektrische Maschine in einer Vielzahl von Betriebszuständen bzw. über den Betrieb der elektrischen Maschine hinweg betrachtet, verhältnismäßig zu groß ausgelegt werden muss.It is necessary here that the electrical machine is designed accordingly in order to have sufficient power reserves in defined operating states, in particular across all operating states, in order to be able to reliably start the internal combustion engine. The consequence of this is that the electrical machine has to be designed to be relatively too large in a large number of operating states or when the electrical machine is in operation.
Der Erfindung liegt die Aufgabe zugrunde, ein verbessertes Verfahren zum Betreiben eines Antriebsstrangs anzugeben, bei dem insbesondere ein effizienteres Zustarten des Verbrennungsmotors möglich ist.The invention is based on the object of specifying an improved method for operating a drive train in which, in particular, a more efficient starting of the internal combustion engine is possible.
Wie zuvor beschrieben, umfasst der erfindungsgemäße Antriebsstrang einen Verbrennungsmotor und eine elektrische Maschine. Des Weiteren umfasst der Antriebsstrang einen eine bewegbare oder bewegte Masse umfassenden Drehmomentwandler und wenigstens eine Kupplungseinrichtung zur lösbaren Verbindung des Verbrennungsmotors mit dem Drehmomentwandler. Dabei kann zum Starten des Verbrennungsmotors über die wenigstens eine Kupplungseinrichtung eine Kopplung zwischen dem Drehmomentwandler und dem Verbrennungsmotor hergestellt werden, wobei eine für das Zustarten des Verbrennungsmotors erforderliche Bewegung zumindest teilweise von der bewegten Masse wenigstens einer Komponente des Drehmomentwandlers bereitgestellt wird.As described above, the drive train according to the invention comprises an internal combustion engine and an electrical machine. Furthermore, the drive train comprises a torque converter comprising a movable or moving mass and at least one coupling device for the detachable connection of the internal combustion engine to the torque converter. To start the internal combustion engine, the at least one clutch device can be used to establish a coupling between the torque converter and the internal combustion engine, with a movement required for starting the internal combustion engine being provided at least in part by the moving mass of at least one component of the torque converter.
Die Erfindung beruht demnach auf der Erkenntnis, dass es möglich ist, die bewegte Masse des Drehmomentwandlers bzw. die bewegte Masse wenigstens einer Komponente des Drehmomentwandlers, beispielsweise des Wandlergehäuses, eines Schaufelrads des Drehmomentwandlers oder dergleichen, zu verwenden, um die Energie für das Zustarten des Verbrennungsmotors bereitzustellen. Mit anderen Worten wird die Trägheit der bewegten Masse wenigstens einer Komponente des Drehmomentwandlers ausgenutzt, um bei Schließen der Kupplungseinrichtung, also Herstellen der Verbindung zwischen dem Drehmomentwandler und dem Verbrennungsmotor, ein Starten des Verbrennungsmotors zu bewirken.The invention is therefore based on the knowledge that it is possible to use the moving mass of the torque converter or the moving mass of at least one component of the torque converter, for example the converter housing, a paddle wheel of the torque converter or the like, in order to use the energy for starting the Provide internal combustion engine. In other words, the inertia of the moving mass of at least one component of the torque converter is used to cause the internal combustion engine to start when the clutch device is closed, that is, the connection between the torque converter and the internal combustion engine is established.
Beispielsweise kann der Verbrennungsmotor dazu über seine Kurbelwelle bzw. eine mit dem Verbrennungsmotor verbundene Kurbelwelle, mit der Kupplungseinrichtung an das Gehäuse des Drehmomentwandlers angekoppelt werden. Die bewegte Masse der wenigstens einen Komponente des Drehmomentwandlers wird sonach als Schwungmasse verwendet, um den Verbrennungsmotor durch die träge Masse der wenigstens einen Komponente zu starten bzw. „hochzureißen“.For example, the internal combustion engine can be coupled to the housing of the torque converter with the coupling device via its crankshaft or a crankshaft connected to the internal combustion engine. The moving mass of the at least one component of the torque converter is therefore used as a flywheel in order to start or “pull up” the internal combustion engine through the inertial mass of the at least one component.
Die bewegte Masse der wenigstens einen Komponente des Drehmomentwandlers kann, je nach Aufbau des Drehmomentwandlers bzw. der innerhalb des Drehmomentwandlers angeordneten Komponenten, unterschiedlich zusammengesetzt sein. Insbesondere können eine oder mehrere Komponenten zu der bewegten Masse beitragen. Dies ist insbesondere davon abhängig, wie die einzelnen Komponenten des Drehmomentwandlers miteinander verbunden bzw. koppelbar oder gekoppelt sind.The moving mass of the at least one component of the torque converter can be composed differently, depending on the structure of the torque converter or the components arranged within the torque converter. In particular, one or more components can contribute to the moving mass. This is particularly dependent on how the individual components of the torque converter are connected to one another or can be coupled or coupled.
Beispielsweise ist es möglich, dass die bewegte Masse durch wenigstens ein Arbeitsfluid, insbesondere Öl, bereitgestellt wird. Innerhalb des Gehäuses des Drehmomentwandlers ist üblicherweise ein Arbeitsfluid, beispielsweise Öl, vorgesehen, dass sich in Abhängigkeit der Bewegung des Drehmomentwandlers ebenfalls in Bewegung versetzt. Durch die Trägheit der Bewegung des Arbeitsfluids, kann bei Schließen der Kupplungseinrichtung Energie über die Kurbelwelle an den Verbrennungsmotor abgegeben werden, um den Verbrennungsmotor zu starten. Somit kann der üblicherweise von der elektrischen Maschine vorgenommene Startvorgang bzw. die üblicherweise durch die elektrische Maschine bereitgestellte Energie zumindest teilweise von dem Arbeitsfluid innerhalb des Drehmomentwandlers bereitgestellt werden.For example, it is possible that the moving mass is provided by at least one working fluid, in particular oil. A working fluid, for example oil, is usually provided within the housing of the torque converter, which is also set in motion as a function of the movement of the torque converter. Due to the inertia of the movement of the working fluid, when the clutch device is closed, energy can be delivered to the internal combustion engine via the crankshaft in order to start the internal combustion engine. The starting process usually performed by the electrical machine or the energy usually provided by the electrical machine can thus be provided at least partially by the working fluid within the torque converter.
Ferner kann die bewegte Masse durch wenigstens einen Abschnitt einer Gehäusewandung und/oder durch die bewegte Masse wenigstens einer Schaufel des Drehmomentwandlers, insbesondere von Pumpenrad oder Turbinenrad, bereitgestellt werden. Die Gehäusewandung des Drehmomentwandlers und/oder eine Schaufel, die beide im Betrieb des Drehmomentwandlers bewegt werden und somit eine gewisse Energie besitzen, können durch die Kopplung an den Verbrennungsmotor, mittels der Kupplungseinrichtung, dazu verwendet werden, die Energie zumindest teilweise abzugeben und somit zu dem Startvorgang des Verbrennungsmotors beizutragen.Furthermore, the moving mass can be provided by at least one section of a housing wall and / or by the moving mass of at least one blade of the torque converter, in particular the pump wheel or turbine wheel. The housing wall of the torque converter and / or a blade, both of which are moved when the torque converter is in operation and thus have a certain amount of energy, can through the Coupling to the internal combustion engine, by means of the coupling device, can be used to at least partially deliver the energy and thus contribute to the starting process of the internal combustion engine.
Gemäß einer weiteren Ausgestaltung des erfindungsgemäßen Verfahrens, kann vorgesehen sein, dass die bewegte Masse durch wenigstens eine Dämpfungseinrichtung, umfassend wenigstens ein Dämpfungselement, insbesondere eine Fliehkraftpendelmasse oder wenigstens eine Teilmasse eines Zweimassenschwungrads bereitgestellt wird. Selbstverständlich kann hierbei jedwede bewegte Masse einer Dämpfungseinrichtung unabhängig von der konkreten Ausgestaltung der Dämpfungseinrichtung verwendet werden, die beispielsweise innerhalb des Wandlergehäuses bzw. des Gehäuses des Antriebsstrangs angeordnet ist. Zum Beispiel können Massen von Torsionsdämpfungseinrichtungen, Fliehkraftpendeln, Zweimassenschwungrädern und dergleichen verwendet werden, um ein Zustarten des Verbrennungsmotors zu erleichtern oder zu bewirken.According to a further embodiment of the method according to the invention, it can be provided that the moving mass is provided by at least one damping device, including at least one damping element, in particular a centrifugal pendulum mass or at least a partial mass of a dual mass flywheel. Of course, any moving mass of a damping device can be used, regardless of the specific design of the damping device, which is arranged, for example, within the converter housing or the housing of the drive train. For example, masses of torsional damping devices, centrifugal pendulums, twin-mass flywheels and the like can be used in order to facilitate or bring about a starting of the internal combustion engine.
Des Weiteren kann innerhalb des Wandlergehäuses bzw. des Gehäuses des Antriebsstrangs eine als Lamellenkupplung ausgebildete Wandlerkupplung angeordnet sein. Die bewegte Masse kann daher durch die wenigstens ein Lamelle der Wandlerkupplung innerhalb des Wandlergehäuses bereitgestellt werden. Dabei können in Abhängigkeit des Zustands der Wandlerkupplung, insbesondere abhängig davon, ob diese geöffnet oder geschlossen ist, diejenigen Lamellen des Innenlamellenträgers oder Außenlamellenträgers verwendet werden, die sich in Bewegung befinden und bei Schließen der Kupplungseinrichtung zur Ankopplung des Verbrennungsmotors an den Antriebsstrang entsprechend Energie auf den Verbrennungsmotor übertragen können, um diesen zu starten.Furthermore, a converter clutch designed as a multi-plate clutch can be arranged within the converter housing or the housing of the drive train. The moving mass can therefore be provided by the at least one lamella of the converter clutch within the converter housing. Depending on the state of the converter clutch, in particular depending on whether it is open or closed, those discs of the inner disc carrier or outer disc carrier can be used that are in motion and when the clutch device is closed to couple the internal combustion engine to the drive train, corresponding energy to the Internal combustion engine can transmit to start it.
Dabei kann gemäß einer weiteren Ausgestaltung des Verfahrens vorgesehen sein, dass die Wandlerkupplung zum Starten des Verbrennungsmotors geschlossen wird. Dadurch kann zum einen erreicht werden, dass für das Zustarten des Verbrennungsmotors mehr bewegte Masse verfügbar ist, d.h., dass die durch die geschlossene Wandlerkupplung zusätzlich bewegten Komponenten des Antriebsstrangs mit dem Verbrennungsmotor gekoppelt werden können, um diesen zu starten. Beispielsweise ist gegenüber einem geöffneten Zustand der Wandlerkupplung zusätzlich der jeweils andere Außenlamellenträger oder Innenlamellenträger ebenfalls aufgrund der geschlossenen Wandlerkupplung bewegt und kann somit ebenfalls Energie zum Starten des Verbrennungsmotors beitragen.According to a further embodiment of the method, it can be provided that the converter clutch is closed to start the internal combustion engine. In this way, on the one hand, it can be achieved that more moving mass is available for starting the internal combustion engine, i.e. that the components of the drive train that are additionally moved by the closed converter clutch can be coupled to the internal combustion engine in order to start it. For example, compared to an open state of the converter clutch, the other outer disk carrier or inner disk carrier is also moved due to the closed converter clutch and can thus also contribute energy to starting the internal combustion engine.
Des Weiteren können aufgrund der geschlossenen Wandlerkupplung, weitere Komponenten des Antriebsstrangs beim Starten des Verbrennungsmotors beitragen, insbesondere können aufgrund der mit der Wandlerkupplung zusätzlich gekoppelten Dämpfungseinrichtung Drehungleichförmigkeiten und dergleichen beim Starten des Verbrennungsmotors bekämpft werden.Furthermore, due to the closed converter clutch, further components of the drive train can contribute when starting the internal combustion engine, in particular rotational irregularities and the like when starting the internal combustion engine can be combated due to the damping device additionally coupled to the converter clutch.
Ersichtlich ist es möglich, in Kombination der einzelnen Komponenten des Antriebsstrangs die letztlich von der elektrischen Maschine aufzubringende Energie zu reduzieren. Dabei ist es insbesondere ebenso denkbar, dass die bewegte Masse ausreichend ist, um ein Zustarten des Verbrennungsmotors alleine zu bewirken, sodass letztlich von der elektrischen Maschine möglichst wenig, insbesondere gar keine, Energie mehr für das Zustarten des Verbrennungsmotors bereitgestellt werden muss. Vorteilhafterweise kann dadurch die elektrische Maschine effizienter dimensioniert werden, und somit über den Betrieb des Antriebsstrangs effizienter betrieben werden.Obviously, it is possible, in combination of the individual components of the drive train, to reduce the energy ultimately to be generated by the electrical machine. In particular, it is also conceivable that the moving mass is sufficient to cause the internal combustion engine to start up on its own, so that ultimately as little energy as possible, in particular none at all, has to be provided by the electric machine for starting the internal combustion engine. The electrical machine can thereby advantageously be dimensioned more efficiently and thus operated more efficiently via the operation of the drive train.
Das Zustarten des Verbrennungsmotors kann ferner mittels der elektrischen Maschine unterstützt werden. Wie zuvor beschrieben, ist es möglich, dass die einzelnen Komponenten des Antriebsstrangs, die insbesondere innerhalb des Wandlergehäuses angeordnet sind, zur Reduzierung der von der elektrischen Maschine aufzubringenden Energie zum Zustarten des Verbrennungsmotors beitragen oder diese im Idealefall vollständig aufbringen. Dabei kann es, insbesondere in Abhängigkeit des jeweils vorliegenden Fahrzustands des Kraftfahrzeugs, notwendig sein, dass ein gewisser Anteil an Energie mittels der elektrischen Maschine aufgebracht wird, sodass das Zustarten des Verbrennungsmotors mittels der elektrischen Maschine unterstützt werden kann.The starting of the internal combustion engine can also be supported by means of the electric machine. As described above, it is possible that the individual components of the drive train, which are arranged in particular within the converter housing, contribute to reducing the energy to be applied by the electrical machine for starting the internal combustion engine or, ideally, apply this completely. It may be necessary, in particular depending on the current driving state of the motor vehicle, that a certain amount of energy is applied by means of the electric machine, so that the starting of the internal combustion engine can be supported by the electric machine.
In jedem Fall kann die Leistungsreserve, die die elektrische Maschine zum Zustarten des Verbrennungsmotors aufweisen muss, gegenüber bekannten Verfahren zum Betreiben eines Antriebsstrangs reduziert werden, da zusätzlich zum von der elektrischen Maschine bereitgestellten Beitrag an Energie die bewegte Masse von Teilen des Antriebsstrangs, insbesondere innerhalb des Wandlergehäuses angeordneten Komponenten des Antriebsstrangs, zum Starten des Verbrennungsmotors beitragen.In any case, the power reserve that the electrical machine must have to start the internal combustion engine can be reduced compared to known methods for operating a drive train, since in addition to the contribution of energy provided by the electrical machine, the moving mass of parts of the drive train, in particular within the Converter housing arranged components of the drive train, contribute to starting the internal combustion engine.
Daneben betrifft die Erfindung einen Antriebsstrang für ein Kraftfahrzeug, welcher Antriebsstrang wenigstens einen Verbrennungsmotor, eine elektrische Maschine, einen Drehmomentwandler und eine Kupplungseinrichtung zur lösbaren Verbindung des Verbrennungsmotors mit dem Drehmomentwandler aufweist, wobei zum Starten des Verbrennungsmotors über die Kupplungseinrichtung eine Verbindung zwischen dem Drehmomentwandler und dem Verbrennungsmotor herstellbar ist, wobei der Antriebsstrang zur Durchführung des erfindungsgemäßen Verfahrens, wie zuvor beschrieben, ausgebildet ist. Die für das Zustarten des Verbrennungsmotors zu erzeugende Bewegung wird dabei zumindest teilweise von der bewegten Masse einer Komponente des Drehmomentwandlers bereitgestellt.In addition, the invention relates to a drive train for a motor vehicle, which drive train has at least one internal combustion engine, an electrical machine, a torque converter and a coupling device for the releasable connection of the internal combustion engine to the torque converter, with a connection between the torque converter and the torque converter for starting the internal combustion engine via the coupling device Internal combustion engine can be produced, the drive train for performing the method according to the invention, as described above, is trained. The movement to be generated for starting the internal combustion engine is provided at least partially by the moving mass of a component of the torque converter.
Dabei ist es insbesondere möglich, dass die Kupplungseinrichtung in einem Ölraum bzw. Ölnebelraum des Antriebsstrangs angeordnet ist. Somit kann das in dem Kühlraum bzw. Nassraum befindliche Öl auch für den Betrieb der Kupplungseinrichtung verwendet werden. Die Kupplungseinrichtung kann beispielsweise als einstufige oder als zweistufige Kupplungseinrichtung ausgebildet sein. Dabei kann die einstufige Kupplungseinrichtung als Reibkupplung ausgebildet sein oder die zweistufige Kupplungseinrichtung kann insbesondere eine Teilkupplung aufweisen, die als Reibkupplung ausgebildet ist und die zweistufige Kupplungseinrichtung kann eine weitere Teilkupplung aufweisen, die als Klauenkupplung ausgebildet ist.It is particularly possible that the clutch device is arranged in an oil chamber or oil mist chamber of the drive train. The oil in the cooling space or wet space can thus also be used for operating the clutch device. The coupling device can, for example, be designed as a single-stage or two-stage coupling device. The single-stage clutch device can be designed as a friction clutch or the two-stage clutch device can in particular have a partial clutch that is designed as a friction clutch and the two-stage clutch device can have a further partial clutch that is designed as a claw clutch.
Insbesondere kann dabei eine erste Stufe der Kupplungseinrichtung als kraftschlüssige Kupplungseinrichtung, insbesondere als Reibkupplung, und eine zweite Stufe der Kupplungseinrichtung kann als formschlüssige Kupplungseinrichtung, insbesondere als Klauenkupplung ausgebildet sein oder eine solche aufweisen. Dabei ist es beispielsweise möglich, dass zum Schließen der Kupplungseinrichtung zunächst die Reibkupplung einen Reibschluss ausbildet, und anschließend zur Übertragung höherer Drehmomente die Klauenkupplung in Eingriff gebracht wird. Somit kann das Zustarten bzw. das Koppeln des Verbrennungsmotors an den Antriebsstrang verbessert werden.In particular, a first stage of the clutch device can be designed as a non-positive clutch device, in particular as a friction clutch, and a second stage of the clutch device can be designed as a positive clutch device, in particular as a claw clutch, or have one. It is possible, for example, for the friction clutch to first form a frictional connection to close the clutch device, and then for the dog clutch to be brought into engagement to transmit higher torques. The starting up or coupling of the internal combustion engine to the drive train can thus be improved.
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen unter Bezugnahme auf die Fig. erläutert. Die Fig. sind schematische Darstellungen und zeigen:
-
1 einen Antriebsstrang nach einem ersten Ausführungsbeispiel; und -
2 einen Antriebsstrang nach einem zweiten Ausführungsbeispiel.
-
1 a drive train according to a first embodiment; and -
2 a drive train according to a second embodiment.
Die beiden Fig. zeigen einen Antriebsstrang
Zum Starten des Verbrennungsmotors
Die einzelnen möglichen Komponenten des Antriebsstrangs
Des Weiteren kann wenigstens ein Abschnitt der Wandung des Gehäuses
Der Antriebsstrang
Wie der einzigen Fig. ferner entnommen werden kann, weist der Drehmomentwandler
Insbesondere ist es dabei möglich, die Wandlerkupplung
Die zusätzliche Kupplungseinrichtung
Das in
BezugszeichenlisteList of reference symbols
- 11
- AntriebsstrangPowertrain
- 22
- VerbrennungsmotorInternal combustion engine
- 33
- elektrische Maschineelectric machine
- 44th
- DrehmomentwandlerTorque converter
- 55
- KupplungseinrichtungCoupling device
- 66th
- Kurbelwellecrankshaft
- 77th
- Gehäusecasing
- 88th
- Innenrauminner space
- 99
- Rotorrotor
- 1010
- Statorstator
- 1111
- DämpfungseinrichtungDamping device
- 12, 1312, 13
- DämpfungselementDamping element
- 1414th
- WandlerkupplungConverter clutch
- 1515th
- InnenlamellenträgerInner disc carrier
- 1616
- AußenlamellenträgerOuter disc carrier
- 1717th
- erste Stufefirst stage
- 1818th
- zweite Stufesecond step
- 1919th
- NassraumWet room
- 2020th
- Gehäusecasing
- 2121st
- LagerschildBearing shield
Claims (11)
Priority Applications (2)
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DE102019204785.8A DE102019204785A1 (en) | 2019-04-04 | 2019-04-04 | Method for operating a drive train for a motor vehicle |
PCT/EP2020/059217 WO2020201331A1 (en) | 2019-04-04 | 2020-04-01 | Method for operating a drive train for a motor vehicle |
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DE102019204785.8A DE102019204785A1 (en) | 2019-04-04 | 2019-04-04 | Method for operating a drive train for a motor vehicle |
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WO (1) | WO2020201331A1 (en) |
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DE102007001424B4 (en) * | 2007-01-09 | 2017-07-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method for starting a piston engine, hybrid drive for a motor vehicle and motor vehicle with hybrid drive |
DE102013012155A1 (en) * | 2013-07-20 | 2015-01-22 | Daimler Ag | A method for starting an internal combustion engine of a motor vehicle with a parallel hybrid powertrain in a vehicle standstill |
DE102016202138A1 (en) * | 2016-02-12 | 2017-08-17 | Bayerische Motoren Werke Aktiengesellschaft | Method for starting an internal combustion engine and drive train for a motor vehicle |
EP3343017A1 (en) * | 2016-12-27 | 2018-07-04 | Volvo Car Corporation | Method and system for starting an internal combustion engine of a hybrid vehicle and a hybrid vehicle comprising a system for starting an internal combustion engine |
DE102017217007A1 (en) * | 2017-09-26 | 2019-03-28 | Zf Friedrichshafen Ag | Hybrid drive module for a motor vehicle |
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2019
- 2019-04-04 DE DE102019204785.8A patent/DE102019204785A1/en active Pending
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