EP4048923A1 - Drehmomentübertragungseinrichtung, antriebsstrang und verfahren zum betrieb einer drehmomentübertragungseinrichtung - Google Patents
Drehmomentübertragungseinrichtung, antriebsstrang und verfahren zum betrieb einer drehmomentübertragungseinrichtungInfo
- Publication number
- EP4048923A1 EP4048923A1 EP20756755.3A EP20756755A EP4048923A1 EP 4048923 A1 EP4048923 A1 EP 4048923A1 EP 20756755 A EP20756755 A EP 20756755A EP 4048923 A1 EP4048923 A1 EP 4048923A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- torque
- input side
- freewheel
- torque transmission
- operating state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
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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
- 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
- B60K6/383—One-way clutches or freewheel devices
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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
- B60K6/40—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 assembly or relative disposition of components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic 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
- B60K6/42—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
- B60K6/44—Series-parallel type
- B60K6/442—Series-parallel switching type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/92—Hybrid vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H2045/005—Combinations of fluid gearings for conveying rotary motion with couplings or clutches comprising a clutch between fluid gearing and the mechanical gearing unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
- F16H2045/0221—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means
- F16H2045/0226—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means comprising two or more vibration dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
- F16H2045/0221—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means
- F16H2045/0247—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means having a turbine with hydrodynamic damping means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
- F16H2045/0221—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means
- F16H2045/0252—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means having a damper arranged on input side of the lock-up clutch
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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
Definitions
- Torque transmission device drive train and method for operating a torque transmission device
- the invention relates to a torque transmission device according to claim 1, a drive train according to claim 8 and a method for operating such a torque transmission device according to claim 10.
- an improved torque transmission device has a first input side rotatably mounted about an axis of rotation, a second input side, an output side, a hydrodynamic converter and a bridging clutch.
- the first input side can be torque-locked to an internal combustion engine and a first torque can be introduced into the first input side.
- the second input side can be torque-locked to an electrical machine and a second torque can be introduced into the second input side.
- the output side can be torque-locked to a translation device.
- the lock-up clutch is arranged in parallel to the hydrodynamic converter.
- the torque transmission device also has a freewheel.
- the freewheel is the hydrodynamic converter and the The second input side is connected downstream of the freewheel in a torque flow of the first torque from the first input side to the output side.
- the freewheel can be operated in a first freewheel operating state or in a second freewheel operating state.
- the freewheel is designed to connect the hydrodynamic converter to the output side for transmitting the first torque from the first input side to the output side when the lock-up clutch is disengaged in the first freewheel operating state of the freewheel.
- the freewheel is designed to decouple the hydrodynamic converter from the output side in the second freewheel operating state in order to at least partially prevent torque transmission of the second torque from the second input side into the hydrodynamic converter.
- This refinement has the advantage that in converter operation the first torque is reliably transmitted from the first input side to the output side and an increase in torque can also be achieved through converter operation on the output side compared to the input side. Furthermore, it is prevented that when the second torque is introduced into the torque transmission device via the second input side, the turbine wheel acts against the pump wheel and unnecessary losses are thereby achieved in the hydrodynamic converter. Furthermore, wear of the converter is minimized because when pumping the turbine wheel, the pump wheel, in which the turbine wheel acts as a pump and the pump wheel as a turbine, may occur due to cavitation effects in a converter fluid of the hydrodynamic converter, the pump wheel and / or the turbine wheel is unnecessarily worn out.
- the torque transmission device is particularly efficient and has a high degree of efficiency in all operating states. Furthermore, thermal overheating of the converter fluid can be prevented. Furthermore, the decoupling of the turbine wheel prevents only a small part of the second torque, which can be introduced into the torque transmission device via the second input side, from being provided on the output side.
- the first input side can be driven at a first speed about the axis of rotation, the second input side being able to be driven at a second speed, wherein the first input side to the second input side have a speed difference to each other, the freewheel being designed to be operated in the second freewheel operating state at a predefined speed difference by the differential speed and in the first freewheel operating state when the predefined speed difference is exceeded by the differential speed .
- the previously defined differential speed can be 0.
- the freewheel is closed in the first freewheel operating state. As a result, free rotation of the turbine wheel relative to the pump wheel and / or the freewheel can be prevented, so that unnecessary bearing wear is prevented.
- the freewheel is designed as a roller freewheel, sprag freewheel, wrap spring clutch or self-synchronizing clutch.
- the hydrodynamic converter has the turbine wheel with a turbine flange, the freewheel having an inner part arranged radially on the inside, an outer part arranged radially on the outside of the inner part and at least one locking body.
- the inner part and the outer part delimit an annular gap in the radial direction in which the locking body is at least partially arranged.
- the locking body is formed.
- the locking body is designed to release the outer part with respect to the inner part in the second freewheel operating state and to connect the inner part to the outer part in a torque-locking manner in the first freewheel operating state.
- the inner part is connected to the second input side and the outer part is non-rotatably connected to the turbine flange. This configuration is particularly suitable for a particularly compact torque transmission with an integrated freewheel system.
- the torque transmission device has a damping device.
- the damping device is in the torque flow of the first Torque between the lock-up clutch and the second input side arranged and designed to at least partially eliminate a rotational irregularity of the first torque. The damping device is then active when the hydrodynamic converter is bridged and the lockup clutch is closed.
- the damper device When the lock-up clutch is open, the damper device is essentially deactivated.
- the damping device can, for example, be a torsion damper that is directly coupled into the torque flow.
- the damper device can also have a centrifugal pendulum, in which case only a pendulum flange of the centrifugal pendulum, to which a pendulum mass is attached for commuting along a pendulum track, is coupled into the torque flow between the lock-up clutch and the second input side.
- a torque transmission device which is particularly axially and radially compact can be provided if the freewheel has, at least in sections, a radial overlap with the absorber device.
- the freewheel is preferably arranged radially on the inside of the absorber device.
- the inner part is non-rotatably connected to a hub of the torque transmission device, the hub being designed to receive and provide a torque transmission to a transmission input shaft of a transmission device, the damping device having an input part, an output part and an energy storage element , wherein the input part can be rotated against the action of the energy storage element with respect to the output part, the output part being non-rotatably attached to the hub.
- An improved drive train for a motor vehicle can be provided in that the drive train has the torque transmission device described above, an internal combustion engine and an electrical machine.
- the internal combustion engine is connected to the first input side in a torque-wise manner.
- the electrical machine is connected to the second input side in a torque-locking manner.
- the internal combustion engine deactivated.
- the electric machine provides the second torque on the second input side.
- the lock-up clutch is open.
- the freewheel is operated in the second freewheel operating state, so that a transmission of the second torque from the second input side into the hydrodynamic converter is essentially interrupted by the freewheel.
- This embodiment has the advantage that in purely electrical operation of the drive train, that is, when only the electric machine is activated and the internal combustion engine is deactivated, pumping operation of the turbine wheel compared to the stationary pump wheel is prevented by the freewheel in the second freewheel operating state.
- the electrical machine can be designed to be particularly small and inexpensive and at the same time a vehicle user can be provided with the convenience of a hydrodynamic converter when the internal combustion engine is in operation.
- the internal combustion engine is activated and provides the first torque on the first input side.
- the electric machine provides the second torque on the second input side or is switched to generator mode or is deactivated.
- the freewheel is switched to the first freewheel operating state and connects the hydrodynamic converter with torque locking to the second input side, so that the torque is transmitted via the hydrodynamic converter and the freewheel in the direction of the second input side from the first input side.
- the second torque is introduced into the torque transmission device via the second input side, the first input side being operated at a differential speed to the second input side, the lock-up clutch being open, the differential speed being less than one predefined speed, wherein the freewheel is operated in the second freewheel operating state and a torque transmission of the second torque from the second input side to the hydrodynamic converter at least partially interrupts, wherein the second torque is substantially transmitted to the output side.
- FIG. 1 shows a schematic representation of a drive train of a motor vehicle
- FIG. 2 shows a longitudinal section through the drive train shown in FIG.
- Figure 1 shows a schematic representation of a drive train 10 of a motor vehicle.
- the drive train 10 is designed, for example, as a flybridge drive train and has a torque transmission device 15, an internal combustion engine 20 designed as a first drive motor and an electrical machine 25 designed as a second drive motor.
- the internal combustion engine 20 can be formed out as a reciprocating piston engine.
- the drive train can have a transmission device 30.
- the transmission device 30 can be designed as an automatic gearshift or as a CVT transmission.
- the torque transmission device 15 has a first input side 35, a second input side 40 and an output side 45.
- rotating masses are symbolically shown by means of rectangles about an axis of rotation 50 of the torque transmission device.
- a (rigid) torque transmission, for example by means of shafts or flanges, is symbolically represented by means of solid lines.
- the first input side 35 is, for example, non-rotatably connected to a crankshaft 51 of the internal combustion engine 20.
- the first internal combustion engine 20 is designed provide a first torque M1 when activated.
- the first internal combustion engine 20 is operated at a first speed n1.
- the second input side 40 is rotatably connected to a rotor 55 of the electrical machine 25.
- the rotor 55 is encompassed by a stator 60 which is arranged in a stationary manner in the drive train 15.
- the electrical machine 25 can, for example, be designed as a brushless DC motor.
- the stator 60 can have windings which, when activated, are energized in such a way that the rotor 55 provides a second torque M2.
- the rotor 55 rotates at a second speed n2 during operation.
- the torque transmission device 15 has a first torque transmission path 90 and a second torque transmission path 95.
- the torque transmission device 15 also has a hydrodynamic converter 65, a converter lock-up clutch 70 and a freewheel 75.
- the torque transmission device 15 can have a damping device 80, in particular a torsion damper 85.
- the torque transmission of the first torque M1 branches off at a first junction 115 into the first torque transmission path 90 and the second torque transmission path 95 first torque transmission 110 (shown as a solid line in Figure 1) with the first input side 115 rotatably verbun the.
- the first torque transmission path 90 and the second torque transmission path 95 run parallel from the first branch 110 and are combined at a second branch 120.
- the second branch is non-rotatably connected to the second input side 40 by means of a second torque transmission 125.
- the hydrodynamic converter 65 and the freewheel 75 are arranged in the first torque transmission path 90.
- the lock-up clutch 70 and the damping device 80, 85 are arranged in the second torque transmission path 95.
- the hydrodynamic converter 65 has at least one pump wheel 100 and one turbine wheel 105.
- the pump wheel 100 is non-rotatably connected to a first branch 115 by means of a third torque transmission 130.
- the turbine wheel 105 is connected to the freewheel 75 by means of a fourth torque transmission 135.
- the freewheel 75 is non-rotatably connected to the second branch 120 by means of a fifth torque transmission 140.
- the lock-up clutch 70 has a clutch input side 145 and a clutch output side 150, the clutch input side 145 being switchably connectable to the clutch output side 150. On the input side, the clutch input side 145 is connected to the first branch 115 by means of a sixth torque transmission 155.
- the damping device 80 can be designed as a torsion damper 85.
- the torsion damper has at least one energy storage element 160.
- the energy storage element is shown schematically in Figure 1 as a bow spring.
- the energy storage element 160 can also be designed differently and, for example, be designed as a compression spring.
- the energy storage element 160 is connected on the input side to the clutch output side 150 in a rotationally fixed manner by means of an input part 165 of the torsion damper 85 shown in FIG. 2 by means of a seventh torque transmission 170.
- the energy storage element 160 is provided by means of one shown in FIG Output part 175 of the torsional damper 85 and a subsequent eighth torque transmission 180 with the second branch 120 rotatest connected.
- the second input side 40 is rotationally connected to the output side 45 by means of a ninth torque transmission 185.
- the drive train 10 has several different operating states, which will be discussed below. Unless otherwise mentioned, the operating states relate only to forward travel of the motor vehicle, with which the motor vehicle is mainly moved in the direction of travel.
- first operating state internal combustion engine 20 is activated and provides first torque M1 at first speed n1.
- the first operating state is essentially carried out when the motor vehicle starts up.
- the first torque M1 is introduced into the first input side 35 at the first speed n1.
- the motor vehicle starts up and the lock-up clutch 70 is open.
- the first torque M1 is transmitted to the first branch 115 via the first torque transmission 110. Due to the opened lock-up clutch 145, the first torque M1 in the first operating state is transmitted essentially via the first torque transmission path 90 to the second branch 120.
- the first torque M1 is transmitted via the pump wheel 100 and the turbine wheel 105 by means of a converter fluid not shown in FIG. In this case, an excessive torque of the first torque M1 can occur at the turbine wheel 105, so that the turbine wheel 105 provides an excessive first torque M1 U at the second speed n2.
- the first input side 35 to the second input side 40 has a speed difference An between the first speed n1 and the second speed n2.
- the speed difference An is positive in the first operating state.
- the freewheel 75 is designed in such a way that when the speed difference nv from the first freewheel operating state in which the freewheel 75 falls below a predefined rotational speed difference the fourth torque transmission 135 connects to the fifth torque transmission 140 and thus the turbine wheel 105 to the second input side 40, changes to a second free-wheeling operating state. In the second freewheeling operating state, the fourth torque transmission 135 is decoupled from the fifth torque transmission 140.
- the predefined speed difference nv is not undershot, so that the freewheel 75 is designed to transmit torque and the turbine wheel 105 is non-rotatably connected to the fifth torque transmission 140 for transmitting the excessive first torque M1U.
- the first torque M1 is transmitted from the second branch 120 via the second torque transmission 125 to the second input side 40 and from the second input side 40 via the ninth torque transmission 185 to the output side 45 for driving the transmission device 30.
- the second input side 40 rotates at the second speed n2, which is lower than the first speed n1.
- the electric machine 25 is deactivated and does not provide a second torque M2.
- the electrical machine 25 is also not switched to the regenerative mode. In the ideal case, which is considered to be frictionless, the first excessive torque M1U is applied to the output side 45.
- a second operating state of the drive train 10 in which the motor vehicle is operated purely electrically, the electric machine 25 is activated and sets the rotor 55 by energizing the stator 60 with electrical energy from an electrical energy store or an electrical supply network, for example a Overhead line, the second torque M2 ready.
- the second input side 40 rotates at the second speed n2.
- the speed difference Dh n1-n2 is negative and the predefined speed difference nv is not reached, so that the freewheel 75 is operated in the second freewheeling operating state.
- the freewheel 75 decouples the turbine wheel 105 or the fourth torque transmission 135 from the fifth torque transmission 140 in the second freewheeling mode.
- the hydrodynamic converter is essentially at a standstill, so that a drag torque for the electrical machine 25 is essentially greatly reduced. Furthermore, unnecessary heating of the converter fluid in the hydrodynamic converter 65 is prevented.
- the second operating state is also suitable for reversing the motor vehicle, in particular if the transmission device 30 does not have a reverse gear.
- the electric machine 25 can drive the output side 45 with a direction of rotation opposite to that of the first input side 35.
- the translation device 30 can be particularly simple and inexpensive remplibil det.
- the internal combustion engine 20 can be activated in the second operating state.
- the internal combustion engine 20 drives the first input side 35 at the first speed n1.
- the first speed n1 is lower than the second speed n2, so that the differential speed An is negative and the predefined speed difference nv has fallen below.
- the freewheel 75 is operated in the first freewheel operating state and the freewheel 75 decouples the turbine wheel 105 from the fourth torque transmission and prevents part of the second torque M2 from being transmitted in the direction of the hydrodynamic converter 65 instead of to the output side 45.
- the internal combustion engine 20 can drive additional units of the motor vehicle, for example an air conditioning system.
- a third operating state of the drive train 10 the drive train 10 is operated in the bridged state.
- the lock-up clutch 70 is closed, so that the clutch input side 145 is connected to the clutch output side 150 in a torque-locking manner, preferably non-rotatably.
- the hydrodynamic converter 65 is deactivated, so that the pump wheel 100 has the same speed as the turbine wheel 105.
- the internal combustion engine 20 is activated in the third operating state and provides the first torque M1 at the first speed n1.
- the first torque M1 is transmitted to the second torque transmission path 95 via the first torque transmission 110 and the first branch 115. There is essentially no torque transmission via the first torque transmission path 90.
- the first torque M1 is transmitted from the first branch 115 via the sixth torque transmission 155 to the clutch input side 145.
- the closed lock-up clutch 70 transmits the first torque M1 to the seventh torque transmission 170.
- the first torque M1 is introduced into the torsion damper 85, which uses the energy storage element 160 to eradicate rotational irregularities in the first torque M1.
- the first torque M1 is smoother than on the input side of the torsional damper 85 and is transmitted to the second branch 120 via the eighth torque transmission 180. From the second branch 120, the first torque M1 is transmitted via the second torque transmission 125 to the second input side 40.
- the electric machine 25 is deactivated, so that the second input side 40 rotates at the second speed n2, with the second speed n2 is equal to the first speed n1.
- the first torque M1 is transmitted from the second input side 40 via the ninth torque transmission 185 to the output side 45.
- the first torque M1 is introduced into the step-up device 30 from the output side 45.
- the freewheel 75 is coupled so that the pump wheel 100 rotates at the speed of the turbine wheel 105. This avoids additional drag losses within the hydrodynamic converter 65 in the third operating state.
- the speed difference Dh between the first speed n1 and the second speed n2 is therefore equal to zero. In this case, the speed difference Dh does not fall below the predefined speed nv, but rather equals the predefined speed nv.
- the freewheel 75 could also be operated in the second freewheel operating state instead of in the first freewheel operating state as described above, so that the turbine wheel 105 is decoupled from the second input side 40. In this operating state, the turbine wheel 105 is dragged along by the pump wheel 100.
- a fourth operating state of the drive train 10 the electric machine 25 is switched to generator mode. Otherwise, the fourth operating state corresponds to the third operating state, but the torque transmitted to the transmission device 30 on the output side 45 is reduced by the second torque M2 with which the electrical machine 25 electrical energy in generator mode.
- the second torque M2 thus acts against the first torque M1 on the second input side 40.
- the internal combustion engine 20 drives both the electrical machine 25 and the transmission device 30 with the first torque M1.
- the electrical energy storage device can be charged by the generator operation.
- FIG. 2 shows a half longitudinal section through the torque transmission device 15 shown in FIG. 1.
- the torque transmission device 15 is formed in Figure 2 in an exemplary embodiment. Another embodiment of the torque transmission device 15 would also be conceivable.
- the first input side 35 is shown on the left.
- the first input side 35 is designed like a flange.
- the first input side 35 can be connected to a crankshaft flange of a crankshaft of the internal combustion engine 20 by means of a form-fitting and / or force-fitting connection 190.
- the torque transmission device 15 also has a housing 195.
- the housing 195 is connected non-rotatably to the first input side 35 on the left.
- the housing 195 delimits a housing interior 200, the housing interior 200 being at least partially filled with a converter fluid 205.
- the housing interior 200 in addition to the hydrodynamic converter 65, the freewheel 75, the torsion damper 85 and the lock-up clutch 70 are also arranged.
- the housing 195 connects the first input side 35 to the pump wheel 100 in a rotationally fixed manner.
- the housing 195 forms both the first torque transmission 110 and the first branch 115 and the third torque transmission 130.
- the pump wheel 100 is arranged in FIG. 2, for example, on an axial side facing away from the first input side 35.
- the turbine wheel 105 is arranged opposite the pump wheel 100.
- the turbine wheel 105 has a turbine flange 210.
- a stator 215 is arranged, for example, radially on the inside.
- the stator 215 is mounted on a housing connector 220 of the housing 195 and is supported on the housing connector 220.
- a further freewheel 225 can be arranged between the housing connector 220 of the housing 195 and the stator 215.
- the further freewheel 225 is supported radially on the inside on the housing connector 220, and the further freewheel 225 is connected to the stator 215 radially on the outside.
- the pump wheel 100 is mounted on the stator 215 in the axial direction by means of a first bearing arrangement 226.
- the freewheel 75 is arranged radially on the inside of the turbine wheel 105.
- the freewheel 75 has an outer part 230 and at least one inner part 235, the inner part 235 being connected to a hub 239.
- the hub 239 and the inner part 235 can be formed in one piece and of the same material.
- the stator 215 is supported in the axial direction on the inner part 235 by means of a second bearing arrangement 245.
- the outer part 230 and the inner part 235 delimit a radial gap.
- At least one, preferably several, locking body 240 is arranged in the radial gap. It is particularly advantageous if the freewheel 75 is designed as a roller freewheel, sprag freewheel, loop spring clutch or self-synchronizing clutch.
- the blocking bodies 240 are designed, for example, as clamping bodies.
- the inner part 235 is connected, for example, to the output part 175 by means of a first rivet connection 250.
- the output part 175 thus forms the eighth torque transmission 180, and the first rivet connection 250 forms the second branch 120.
- the energy storage element 160 is arranged radially on the outside of the freewheel 75 and is designed, for example, to overlap the freewheel 75 radially.
- a radial overlap is understood to mean that when two components, for example the energy storage element 160 and the freewheel 75, are projected in a radial direction into a projection plane in which the axis of rotation 50 runs, the two components, for example the freewheel 75 and cover the energy storage element 160 in the plane of projection.
- the output part 175 and the input part 165 also take on a retainer function for fixing the energy storage element 160.
- the input part 165 is guided from the radially outside to the radially inside and ends radially on the inside at approximately the level of the inner part 235 of the freewheel 75.
- the input part 165 is connected to an inner lamella carrier 255 by means of a second rivet connection 259. Both the inner disc carrier 255 and the input part 165 together with the second rivet connection 259 form the seventh torque transmission 170. Furthermore, the inner disk carrier 255 forms the clutch output side 150.
- the lock-up clutch 70 also has a friction set 260 and an outer disc carrier 265, the outer disc carrier 265 being arranged radially on the outside of the inner disc carrier 255.
- the outer disk carrier 265 forms a further radial gap with the inner disk carrier 255, the friction set 260 being arranged in the further radial gap.
- the outer disk carrier 265 forms the clutch input side 145 of the lock-up clutch 70 and is connected to the housing 195 on the front side, for example welded on.
- the lock-up clutch 70 has a pressure chamber 270 and a pressure piston 275, the pressure chamber 270 being delimited on one side by the housing 195 and by the pressure piston 275 opposite to the housing 195.
- the pressure chamber 270 is delimited radially on the outside by the outer disk carrier 265.
- the pressure piston 275 is displaceable in the axial direction, the pressure piston 275 being able to rest against the friction set 260.
- the torque transmission device 15 is designed as a three-channel converter, that is to say that a separate pressure channel 280 is provided for controlling the bridging clutch 70.
- a pressurized fluid 285 can be pressurized into the pressure chamber 270 in order to introduce an actuating force FB into the friction pack 260 in order to generate a frictional connection in the friction pack 260 and to connect the outer disc carrier 265 to the inner disc carrier 255.
- a gear input shaft 290 is arranged parallel to the axis of rotation 50 as a hollow shaft.
- the transmission input shaft 290 forms the output side 45 on the right-hand side in FIG.
- the transmission input shaft 290 forms the second and ninth torque transmissions 125, 185 explained in FIG. 1.
- the rotor 55 of the electrical machine 25 is attached to the transmission input shaft 290 radially on the outside.
- the electric machine 25 is arranged in the axial direction between tween the transmission device 30 and the torque transmission device 15.
- the pressure channel 280 can be arranged in the transmission input shaft 290 in order to provide the pressure fluid 285 from the transmission device 30 for switching the lock-up clutch 70.
- the transmission input shaft 290 engages positively in the hub 239 and is positively connected to the inner part 235 of the freewheel 75 via the hub 239 in a rotationally fixed manner.
- the first operating state is shown symbolically by means of arrows.
- the first torque M1 is introduced via the first input side 35 and transmitted from the first input side 35 to the housing 195.
- the housing 195 drives the impeller 100 and the outer disk carrier 265.
- the lock-up clutch 70 is open.
- the pump wheel 100 drives the turbine wheel 105 via the converter fluid 205, the first torque M1 being supported on the turbine wheel 105 with the excessive first torque M1U.
- the excessive first torque M1U is transmitted from the turbine wheel 105 on the turbine flange 210 via a third riveted connection 295 to the outer part 230.
- the freewheel 75 In the first operating state, the freewheel 75 is in the first freewheel operating state, so that the freewheel 75 is coupled and transmits the first excessive torque M1 U from the outer part 230 via the locking body 240 to the inner part 235. As a result of the engagement of the hub 241 in the transmission input shaft 290, the excessive first torque M1U is transmitted to the transmission input shaft 290.
- the second input shaft 290 can be introduced into the transmission input shaft 290 via the rotor 55 in the third to fifth operating state of the Torque transmission device 15, the pressure fluid 285 in the pressure chamber 270 is pressurized and presses against the pressure piston 275 to provide the actuation force FB.
- the actuation force FB braces the friction set 260 with a counterforce FG acting against the actuation force FB, so that a frictional connection is formed in the friction set 260.
- the first torque M1 is passed from the housing 195 to the outer disk carrier 265. From there, the first torque M1 is transmitted to the inner disk carrier 255 via the frictional engagement in the friction set 260.
- the inner disk carrier 255 transmits the first torque M1 via the second rivet connection 259 to the input part 165.
- the input part 165 is arranged such that it can rotate with respect to the output part 175 against the action of the energy storage element 160.
- the energy storage element 160 which in the embodiment is designed as an arc spring, for example, is tensioned.
- the torsion damper 85 at least partially eliminates the rotational irregularity in the first torque M1.
- the first torque M1 is designed to be smoother at the output part 175 than at the input part 165.
- the first torque M1 is introduced into the inner part 235 of the freewheel 75 through the internal coupling by means of the first rivet connection 250.
- the first torque M1 is transmitted from the inner part 235 via the hub 241 to the transmission input shaft 290.
- the second torque M2 acts against the first torque M1 and thereby reduces the effect of the first torque M1 on the output side 45. If the electric machine 25 is activated and it provides the second torque M2, which is in the same direction on the transmission input shaft 290 acts like the first torque M1.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Arrangement Of Transmissions (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102019128609.3A DE102019128609A1 (de) | 2019-10-23 | 2019-10-23 | Drehmomentübertragungseinrichtung, Antriebsstrang und Verfahren zum Betrieb einer Drehmomentübertragungseinrichtung |
PCT/DE2020/100654 WO2021078320A1 (de) | 2019-10-23 | 2020-07-23 | Drehmomentübertragungseinrichtung, antriebsstrang und verfahren zum betrieb einer drehmomentübertragungseinrichtung |
Publications (1)
Publication Number | Publication Date |
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EP4048923A1 true EP4048923A1 (de) | 2022-08-31 |
Family
ID=72086641
Family Applications (1)
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EP20756755.3A Withdrawn EP4048923A1 (de) | 2019-10-23 | 2020-07-23 | Drehmomentübertragungseinrichtung, antriebsstrang und verfahren zum betrieb einer drehmomentübertragungseinrichtung |
Country Status (5)
Country | Link |
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US (1) | US20220379709A1 (de) |
EP (1) | EP4048923A1 (de) |
CN (1) | CN114555978A (de) |
DE (1) | DE102019128609A1 (de) |
WO (1) | WO2021078320A1 (de) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19946333A1 (de) * | 1998-10-05 | 2000-04-06 | Luk Getriebe Systeme Gmbh | Drehmomentwandler |
DE102005012242A1 (de) * | 2005-03-15 | 2006-09-21 | Zf Friedrichshafen Ag | Hydrodynamische Kopplungsvorrichtung |
DE102006028771A1 (de) * | 2006-06-23 | 2008-01-03 | Daimlerchrysler Ag | Hydrodynamischer Drehmomentwandler und Verfahren zur Herstellung eines solchen |
DE102008026426A1 (de) | 2007-06-20 | 2008-12-24 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydrodynamische Kopplungsvorrichtung für Hybridfahrzeuge |
DE102015201457A1 (de) * | 2015-01-28 | 2016-07-28 | Zf Friedrichshafen Ag | Nasslaufendes Anfahrelement mit einem hydrodynamischen Wandler |
-
2019
- 2019-10-23 DE DE102019128609.3A patent/DE102019128609A1/de not_active Withdrawn
-
2020
- 2020-07-23 WO PCT/DE2020/100654 patent/WO2021078320A1/de unknown
- 2020-07-23 CN CN202080072436.5A patent/CN114555978A/zh active Pending
- 2020-07-23 US US17/770,662 patent/US20220379709A1/en active Pending
- 2020-07-23 EP EP20756755.3A patent/EP4048923A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
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CN114555978A (zh) | 2022-05-27 |
WO2021078320A1 (de) | 2021-04-29 |
DE102019128609A1 (de) | 2021-04-29 |
US20220379709A1 (en) | 2022-12-01 |
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