EP4103864A1 - Antriebssystem für ein fahrzeug - Google Patents
Antriebssystem für ein fahrzeugInfo
- Publication number
- EP4103864A1 EP4103864A1 EP21703445.3A EP21703445A EP4103864A1 EP 4103864 A1 EP4103864 A1 EP 4103864A1 EP 21703445 A EP21703445 A EP 21703445A EP 4103864 A1 EP4103864 A1 EP 4103864A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- area
- drive system
- coupling
- input area
- clutch
- 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- Withdrawn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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- 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
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
-
- 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
- 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 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 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
- B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
-
- 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
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
-
- 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
- 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 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 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
-
- 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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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D11/00—Clutches in which the members have interengaging parts
- F16D11/14—Clutches in which the members have interengaging parts with clutching members movable only axially
-
- 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
-
- 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
- F16H2045/0205—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type two chamber system, i.e. without a separated, closed chamber specially adapted for actuating a lock-up clutch
-
- 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
-
- 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
- F16H2045/0273—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type characterised by the type of the friction surface of the lock-up clutch
- F16H2045/0278—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type characterised by the type of the friction surface of the lock-up clutch comprising only two co-acting friction surfaces
-
- 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
- the present invention relates to a drive system for a vehicle having a drive system input area to be coupled to a drive unit and a drive system output area to be coupled to a transmission arrangement and an electric machine.
- Such a drive system is known from US Pat. No. 8,298,105 B2.
- a start-up assembly in the form of a hydrodynamic torque converter with a with a housing by means of a hitch be connectable pump impeller and in an interior of the housing is arranged and coupled to an output area of the start-up assembly Turbi nenrad procedure.
- a coupling acting between the pump wheel and the turbine wheel can bridge the hydrodynamic circuit built up with the pump wheel, the turbine wheel and a stator and thus provide a fixed mechanical torque transmission connection from the housing providing an input area of the start-up assembly to the output area of the start-up assembly.
- An electric machine is positioned outside the housing of the starting assembly and is coupled to the pump wheel in order to apply drive torque to the output area of the starting assembly and thus also an output area of the drive system via the pump wheel, the clutch acting between the pump wheel and the turbine wheel and the turbine wheel transfer.
- a drive system for a vehicle comprising: a drive system to be coupled to a drive unit.
- a start-up assembly comprising a start-up assembly input area coupled to the drive system input area or providing it and a start-up assembly output area coupled with or providing the drive system output area, one with the start-up assembly output area and / or the drive system -Output area coupled electric machine, a dog clutch in the torque transmission path between the starting assembly input area and the electric machine with a claw clutch input area, a dog clutch output area and a dog clutch input area with the dog clutch output area for common rotation Coupling member coupling around an axis of rotation.
- the dog clutch can be arranged in the torque transmission path between the starting assembly input area and the rotor arrangement of the electric machine.
- the starting assembly can include a hydrodynamic circuit with a pump wheel and a turbine wheel in a fluid-filled or fillable housing in the torque transmission path between the starting assembly input area and the starting assembly output area, and the starting assembly can be in the torque transmission path between the starting assembly input area and the starting assembly.
- Output area in the housing include a lock-up clutch.
- the start-up assembly can be designed as a hydrodynamic torque converter and comprise a stator in association with the pump wheel and the turbine wheel.
- a damping of torsional vibrations occurring in a drive train can be achieved in that at least one torsional vibration damper unit is arranged in the housing in the torque transmission path between the starting assembly input area and the starting assembly output area.
- the dog clutch can be arranged in the housing.
- the mass to be dragged along in the electric motor operation can be further reduced in that a secondary side of the at least one torsional vibration damper unit is coupled to the claw clutch input area, or that the claw clutch input area comprises the secondary side of the at least one torsional vibration damper unit.
- an output area of the lock-up clutch is coupled to the claw clutch input area, or that the dog clutch input area encompasses the output area of the lock-up clutch.
- the output area of the bridging clutch is coupled to the claw clutch input area via the at least one torsional vibration damper unit.
- a turbine wheel carrier can be coupled to the dog clutch input area, or the dog clutch input area can include the turbine wheel carrier.
- the starting assembly output area can comprise an output hub arranged in the housing, and the dog clutch output area can be coupled to the output hub or can comprise the output hub.
- the coupling element can be displaced in the direction of the axis of rotation between an engagement corresponding to the engaged state of the dog clutch.
- Position and an off position corresponding to the disengaged state of the dog clutch wherein in the engaged position the coupling element is coupled to the dog clutch input area and the dog clutch output area for common rotation about the axis of rotation and in the disengaged position the coupling element with the dog clutch input area or / and the dog clutch output area is not coupled for common rotation about the axis of rotation.
- the coupling element can be adjusted by applying Druckfluidbe from the engagement position to the disengaged position and / or from the position to the engaged position. Furthermore, the coupling member can be biased in the direction of the engagement position or in the direction of the disengagement position by a biasing arrangement, for example a biasing spring.
- the coupling element can delimit a pressure fluid chamber with an area of claw clutch input area and claw clutch output area, the coupling element being adjustable between the engagement position and the disengagement position by changing a fluid pressure in the pressure fluid chamber.
- the coupling member be guided in one area of the claw clutch input area and the claw clutch output area so that it can be displaced in a fluid-tight manner in the direction of the axis of rotation with respect to this area.
- at least one sealing element can be provided on the coupling member and / or on one area of the claw clutch input area and the claw clutch output area.
- the coupling member can have a plurality of coupling claws, an area of claw clutch input area and claw clutch output area have a plurality of claw engagement recesses, a form-fit coupling formation coupling the coupling element with the other area of the claw clutch input area and the claw clutch output area for common rotation about the axis of rotation should be seen.
- the form-fitting coupling formation on the coupling element or the other area of the claw coupling input area and the claw coupling output area can have at least one coupling recess and, in association with the at least one coupling recess, on the other area of the claw coupling input area and the claw coupling output area or the coupling organ at least comprise a coupling projection which engages in the at least one coupling recess so as to be displaceable in the direction of the axis of rotation.
- the start-up assembly input area can include the housing, which can be coupled to a drive shaft of the drive unit, which is designed, for example, as an internal combustion engine, via known coupling means, such as a flexplate or the like.
- the invention further relates to a drive train for a vehicle, comprising a drive unit coupled to a transmission arrangement by means of a drive system constructed according to the invention.
- FIG. 1 shows a basic representation of a vehicle with a drive train comprising a drive unit and a transmission arrangement
- FIG. 2 shows the drive train of the vehicle of FIG. 1 in a circuit diagram-like representation
- FIG. 3 shows a partial longitudinal sectional view of a start-up assembly of the drive train of FIG. 2 designed as a hydrodynamic torque converter
- FIG. 4 shows an illustration corresponding to FIG. 3 of an alternative embodiment of a start-up assembly
- Fig. 5 is a further illustration corresponding to FIG. 3 of an alternative design type of a start-up assembly.
- a vehicle shown in principle is designated generally by 10.
- the vehicle 10 comprises a drive train 12 in which the drive torque provided by a drive unit 14 designed as an internal combustion engine is transmitted to driven wheels 16, 18.
- the drive train 12 comprises between the internal combustion engine 14 and a transmission arrangement 20 a drive system, generally designated 22, with a starting assembly 24, a dog clutch 26 and an electric machine 28 supplied drive torque an assist torque can be supplied in order to drive the vehicle 10 in a hybrid drive mode both by the drive unit 14 and the electric machine 28.
- the drive unit 14 can be started by means of the electric machine 28.
- the drive unit 14 In the disengaged state of the dog clutch 26, the drive unit 14 is decoupled from the area of the drive train 12 following the dog clutch 26, so that the vehicle 10 can be driven solely by the electric machine 28 in an electric motor operating mode.
- FIG. 2 illustrates in more detail the area of the drive train 12 which is designated as drive system 22 in the context of the present invention and which is essentially located between the drive unit 14 and the transmission arrangement 20.
- the drive system 22 comprises, as a central assembly, the start-up assembly 24, which in the illustrated embodiment is designed as a hydrodynamic torque converter with a hydrodynamic circuit 32 built up in a housing 30.
- This hydrodynamic circuit 32 is coupled to the Gezza se 30, so coupled with this for common rotation Pum penrad 34, a turbine wheel arranged in an interior 36 of the housing 30 38 and a stator 40 arranged radially on the inside between the pump wheel 34 and the turbine wheel 38.
- the housing 30 forms a start-up assembly input area 42, via which the torque output by the drive unit 14 is introduced into the start-up assembly 24 and thus the drive system 22.
- the housing 30 can also be viewed as a drive system input area 44 at the same time.
- the housing 30, i.e. the starter assembly input area 42 or the drive system input area 44, can be coupled to a drive shaft of the drive unit 14, in particular a cure shaft of the drive unit 14 designed as an internal combustion engine, for example by means of a flexplate or the like.
- a lock-up clutch 46 is also arranged parallel to the hydrodynamic circuit 32.
- a torque can be transmitted parallel to the hydrodynamic circuit 32 to the turbine wheel 38 or a turbine wheel carrier 48 carrying it and via this to a starting assembly output area 50.
- a torque is transmitted between the starting assembly input area 42 and the starting assembly output area 50 either via the hydrodynamic circuit 32 and thus with the circulation of a fluid, generally oil, present in the housing interior 36 , or the torque is transmitted via the lock-up clutch 46 which establishes a mechanical connection.
- a portion of the torque introduced into the start-up assembly 24 can be transmitted to the start-up assembly output area 50 via both torque transmission paths.
- the claw coupling 26 is also arranged in the housing interior 36.
- a dog clutch input area 74 is coupled to a secondary side 68 of a torsional vibration damper unit 52.
- a primary connected to the secondary side 68 by means of a damper element arrangement 70 for torque transmission Side 72 of the torsional vibration damper unit 52 is coupled to an output area 54 of the lock-up clutch 46, while an input area 56 of the lock-up clutch 46 is coupled to the housing 30 or is provided by the latter.
- One of the dog clutch output area 76 is coupled to the starting assembly output area 50 or made available by it.
- the claw clutch 26 arranged in the housing interior 36 creates the possibility of interrupting the torque flow between the starting assembly input area 42 and the starting assembly output area 50 or permitting torque transmission in the starting assembly 24.
- the dog clutch 26 is disengaged, no torque is transmitted between the starting assembly input area 42 and the starting assembly output area 50, regardless of the state in which the lockup clutch 46 is.
- the dog clutch 26 is engaged, regardless of whether the lock-up clutch 46 is engaged or disengaged, the torque introduced into the starting assembly input area 42 or the torque output by the turbine wheel 38 is transmitted to the starting assembly output area 50.
- the starting assembly output area 50 can, as set out below, comprise, for example, an output hub 58 connected to a transmission input shaft 60 or an intermediate shaft coupled to it.
- the intermediate shaft or the transmission input shaft 60 can provide a drive system output area 62 via which a torque can be introduced into the transmission arrangement 20.
- the electric machine 28 or a rotor arrangement 64 of the same is coupled to the starting assembly output area 50 or the drive system output area 62 and is thus firmly connected to it for torque transmission.
- the rotor assembly 64 of the electric machine 28, the stator assembly 66 of which can be carried on a stationary assembly can be coupled to the transmission input shaft 60 or an intermediate shaft coupling the transmission input shaft 60 to the starting assembly output area 50.
- a torque in the drive train 12 for starting the drive unit 14 can be transmitted, for example by means of the electric machine 28, when the dog clutch 26 and also the lockup clutch 46 are engaged.
- a starter could additionally be provided, which is coupled, for example, to the starting assembly input area 42 and can provide a starting torque for the drive unit 14.
- a drive torque of the drive unit 14 can be transmitted to the drive system output area 62 and thus to the gear arrangement 20 when the dog clutch 26 is engaged.
- the lock-up clutch 46 can be engaged or disengaged or operated in slip mode.
- the electric machine 28 can deliver a supporting torque in order to drive the vehicle 10 in a hybrid drive mode.
- the electric machine 28 can be operated as a generator in this state or in an engine braking state in order to charge a battery present in the vehicle 10.
- the entire engine braking torque can be provided by the electric machine 28 when the dog clutch 26 provided in the starting assembly 24 is disengaged and the drive unit 14 is thus decoupled. In this way, very efficient charging of the battery can be achieved in recuperation operation without any system areas of the start-up assembly 24 having to be dragged along with a loss of energy.
- the housing 30 which provides the start-up assembly input area 42 and also the drive system input area 44, is constructed with two housing shells 78, 80.
- the housing shell 80 essentially also provides the pump wheel 34 or a pump wheel shell of the same.
- the turbine wheel 38 or a turbine wheel shell of the same is coupled to the turbine wheel carrier 48, which is rotatably mounted radially on the inside on the output hub 58, for example by riveting.
- the lock-up clutch 46 comprises a clutch piston 82 which is supported radially on the inside on the transmission input shaft 60 or the intermediate shaft in a fluid-tight, axially displaceable manner to engage.
- the housing 30 with its housing shell 80 thus provides the input area 56 of the lock-up clutch 46.
- the clutch piston 82 forms the output area 54 of the bridging clutch 46. In the illustrated embodiment, this is coupled via the torsional vibration damper unit 52 to the turbine wheel carrier 48 providing the secondary side 68 of the torsional vibration damper unit 52.
- the torsional vibration damper unit 52 can be constructed in a conventional manner and can include springs of the damper element unit 70 arranged one after the other in the circumferential direction or nested within one another, which on the one hand relate to the clutch piston 82 and which essentially also provide the primary side 72 on the other hand with regard to the Binenradmiks 48 can support and thus a limited relative rotation between these rule about an axis of rotation A of the starting assembly 24 allow.
- the turbine wheel carrier 48 which is basically rotatably mounted radially on the inside on the output hub 58 and is axially supported with respect to the stator 40, forms with its radially inner region the claw clutch input region 74. Engagement recesses 84 on.
- On the drive hub 58 from a coupling member 86 is displaceable in the direction of the axis of rotation wear ge.
- the coupling member 86 has a plurality of coupling claws 88 in its radially outer region.
- the coupling member 86 is arranged on the axial side facing away from the stator 40 and thus also from the pump wheel 34 of the Turbinenradträ gers 48 or the claw clutch input area 74, and by axia le displacement of the coupling member 86 in the representation of FIG. 3 to the right, that is toward the turbine wheel carrier 48, the coupling claws 88 can be positioned so as to engage in the claw engagement recesses 84 in order to produce the engaged state of the claw clutch 26.
- a flange area 90 projecting radially outward is provided on the output hub 58.
- the turbine wheel carrier 48 is supported on this with its radially inner region providing the claw clutch input region 74 axially in the direction away from the stator 40.
- coupling recesses 92 are formed, in which the coupling claws 88, which also provide coupling projections 94, engage in an axially displaceable manner in order to rotationally couple the coupling member 86 with the claw coupling output area 76 as well as the output hub 58 providing the starting assembly output area 50.
- the coupling projections 94 provided by the coupling claws 88 and the coupling recesses 92 provided on the flange area 90 of the output hub 58 thus provide a form-fit coupling formation 96 through which the coupling member 86 is in the disengagement position of the claw clutch 26 shown in FIG. 3 and of course also the engagement position the claw coupling 26 with the claw coupling Output hub 58 providing output region 76 is coupled for common rotation about axis of rotation A.
- the coupling element 86 is not coupled to the claw clutch input area 74 for common rotation about the axis of rotation, so that basically the turbine wheel carrier 84 is freely rotatable with respect to the output hub 58 about the axis of rotation A.
- the output hub 58 and the coupling member 86 delimit a pressure fluid chamber 100 into which pressure fluid can be introduced via one or more openings 102 and a pressure fluid channel 104 provided in the transmission input shaft 60 or from which pressure fluid can be discharged via these openings 102 and the pressure fluid channel 104 .
- the coupling element 86 can be disengaged from the disengagement of the same in the direction of a coupling of the turbine wheel carrier 48, which can be seen in FIG of the coupling member 86 ver shifting force are generated.
- the fluid pressure in the pressurized fluid chamber 100 can be lowered compared to the fluid pressure in the housing interior 36, so that by the fluid pressure acting on the coupling member 86 on its outside, the coupling member 86 counter to the biasing spring 106 which biases it towards its disengaged position, which for example as Disk spring or the like can be formed, is shifted in the direction of its a return, in which the coupling claws 88 engage in the claw engagement recesses 84 and thus produce a rotary coupling of the Klauenkupp ment output area 76 with the claw clutch input area 74.
- the coupling member 86 By increasing the fluid pressure in the pressurized fluid chamber 100 and the Vorspannwir effect of the biasing spring 106, the coupling member 86 can be moved from its Einschstel ment in the direction of the disengaged position shown in FIG. In this case, in the engagement position, a movement stop can be implemented through the radially inner region of the clutch piston 82 or a stop element provided, for example, on the hub region 98.
- the coupling member 86 is designed with an essentially Z-shaped cross-sectional contour and, in its radially central region, provides a plurality of coupling recesses 92 that generally point in the direction of the pressure fluid chamber 100.
- a sealing disk 108 constructed, for example, of sheet metal material is fixed by means of a plurality of bolts providing coupling projections 94.
- the coupling projections 94 also engage in the coupling recesses 92 when the coupling member 86 is in its disengaged position, defined for example by the radially inner region of the clutch piston 82, in order to achieve a positive engagement state regardless of the axial positioning of the coupling member 86 with respect to the output hub 58 to maintain.
- Sealing elements are provided on the outer circumference of the hub region 98 and the sealing disk 108, on which the coupling element 86 is axially movable and the pressure fluid space 100 is guided in a fluid-tight manner.
- the coupling member 86 is basically no pre-tensioning spring assigned. This means that in this embodiment the coupling element 86 is axially loaded solely by the pressure difference between the fluid pressure prevailing in the pressurized fluid chamber 100 and the fluid pressure prevailing in the housing interior 36 and is set in a defined position. In principle, however, a biasing spring could also be provided in this embodiment, for example, in the pressure fluid chamber 100, which loads the coupling member 86, for example, in the direction of its disengaged position. This ensures that whenever, for example, when the vehicle is parked, defined pressure conditions do not prevail in the housing interior 36 or the pressure fluid chamber 100, the dog clutch 26 is in its off state.
- the coupling member 86 is essentially Z-shaped and is provided, for example, as a formed sheet metal part.
- a plurality of rivet bolts providing the coupling claws 88 and the coupling projections 94 are fixed on the coupling member 86, distributed in the circumferential direction. These engage in openings in the flange 90 of the output hub 58 providing coupling recesses 92 and can be positioned engagingly in the claw engagement recesses 84 formed in the radially inner region of the turbine wheel carrier 48 when the coupling member 86 moves into its engagement position.
- the coupling element 86 which is provided, for example, as a formed sheet metal part, is coated on its side facing the pressure fluid chamber 100 or the hub area 98 with a layer of sealing material 110, for example rubber material or other sealing elastomer material, in order to thus to provide a fluid-tight seal with respect to the hub region 98 and the flange region 90.
- a layer of sealing material 110 for example rubber material or other sealing elastomer material
- the fluid-tight seal can be supported in that, for example, O-ring-like sealing elements are provided on the inner circumference of the coupling recesses 92.
- the coupling member 86 is prestressed by a prestressing spring, for example a plate spring or the like, in the direction of its disengaged position. A movement of the coupling element 86 into its engagement position can then be achieved by lowering the fluid pressure in the pressurized fluid chamber 100 compared to the fluid pressure in the housing interior 36, so that the coupling element 86 is shifted into its engagement position against the prestress of such a prestressing spring.
- the coupling member 86 with the sealing material 110 seen thereon lies against the axial side of the flange area 90 of the output hub 58 facing away from the turbine wheel carrier 84 or from the claw clutch input area 74, so that this sealing material 110 is also used in the A fluid-tight seal is achieved and fluid leaks due to the excess pressure then prevailing in the housing interior 36 in the pressurized fluid chamber 100 are avoided.
- one or more damper units could be provided in the interior of the housing, each of which has a deflection mass carrier, for example fixed on the turbine wheel carrier, and thereon deflection masses deflectable against a restoring force from a basic relative position when torsional vibrations occur.
- this restoring force is implemented by one or more restoring springs which couple the deflection masses with the deflection mass carrier.
- the deflection masses move radially outward in the Rotationsbe in centrifugal potential, and the restoring force is generated by the centrifugal force that biases the deflection masses radially outward.
- the deflection masses are forced radially inward when moving out of the basic relative position with respect to the deflection mass carrier, whereby they absorb potential energy.
- the coupling claws of the claw coupling can, for example, be chamfered at their axial end regions in order to facilitate entry into the claw engagement recesses when the state of engagement is established.
- the claw clutch can also comprise a synchronizing device, such as is used, for example, in manual transmissions, in order to couple gearwheels to gear shafts by means of such claw clutches.
- the claw coupling could also be arranged on the other axial side, that is to say between the latter and the stator.
- several torsional vibration damper units could also be provided in series in the housing interior, with the turbine wheel either connected to an intermediate mass or, for example, also the secondary side of the radially inner torsional vibration supply damper unit could be coupled. This secondary side could then provide the dog clutch input area.
- the coupling element could be provided on both sides with respect to the flange area of the output hub and the other direction could be displaced in each case in one of the two directions for engagement.
- the assignment of the pressure fluid chamber to the coupling member can also be provided in such a way that it is displaced in the direction of its closed position by increasing the pressure in the pressure fluid chamber. It is also possible to assign two pressure fluid chambers to engage and disengage the dog clutch.
- the seal between the coupling member and the output hub can, as is provided, by, for example, O-ring-like sealing elements, by gap seal, lip seal or a rigid sealing element, such as. B. a rectangular ring.
- Such provisions serving the seal can have an opening function in order to enable a fluid exchange with the pressure fluid chamber in certain positions of the sealing member, or can have a valve function with passage in one direction.
- an advantageous switching behavior of the dog clutch can be achieved.
- Further flow channels leading to the pressure fluid chamber can be provided, which can be opened or closed depending on the position of the coupling element in order to ensure the actuation of the coupling element.
- biasing springs which countries, for example, as helical springs, leaf spring, disc springs, leaf spring star or the like can be designed
- the coupling member can be biased towards its disengagement or towards its engagement position.
- a bistable spring element is also conceivable in order to bias the coupling member in its direction of movement to the position that then follows after overcoming a dead center.
- the turbine wheel carrier can, for example, be divided into a radially outer and a radially inner area. be educated.
- One or more channels can then lead through the radially inner part in order to be able to direct the pressurized fluid required to actuate the coupling member into the pressurized fluid chamber, which is then positioned further radially outward.
- Two pressure fluid chambers can also be provided in association with the coupling element, for example in order to be able to act on them in both directions essentially independently of the fluid pressure prevailing in the housing interior.
- a slide bearing can be provided to facilitate this relative rotation.
- Security measures such as B. a pressed-on hedging ring may be provided to keep the turbine wheel carrier, so the dog clutch input area, defined axially in the radially inner region.
- the coupling member could also interact with the stator, the turbine carrier or the housing shell to provide a pressurized fluid chamber to be filled with pressurized fluid, as well as with an area of the transmission input shaft. Integration in the area of a support hollow shaft carrying the stator radially on the inside is also conceivable.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Arrangement Of Transmissions (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020201590.2A DE102020201590A1 (de) | 2020-02-10 | 2020-02-10 | Antriebssystem für ein Fahrzeug |
| PCT/EP2021/052663 WO2021160510A1 (de) | 2020-02-10 | 2021-02-04 | Antriebssystem für ein fahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4103864A1 true EP4103864A1 (de) | 2022-12-21 |
Family
ID=74553832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21703445.3A Withdrawn EP4103864A1 (de) | 2020-02-10 | 2021-02-04 | Antriebssystem für ein fahrzeug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4103864A1 (de) |
| DE (1) | DE102020201590A1 (de) |
| WO (1) | WO2021160510A1 (de) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007038236A1 (de) | 2007-08-13 | 2009-02-19 | Voith Patent Gmbh | Kraftfahrzeug-Anfahrelement und Verfahren zum Antreiben eines Kraftfahrzeugs |
| US8201674B2 (en) * | 2007-09-14 | 2012-06-19 | Schaeffler Technologies AG & Co. KG | Torque converter with reverse |
| US8298105B2 (en) | 2008-09-30 | 2012-10-30 | Aisin Seiki Kabushiki Kaisha | Hybrid drive device |
| DE102014213818A1 (de) * | 2014-07-16 | 2016-01-21 | Schaeffler Technologies AG & Co. KG | Antriebsanordnung |
| JP6649950B2 (ja) * | 2014-09-22 | 2020-02-19 | シェフラー テクノロジーズ アー・ゲー ウント コー. カー・ゲーSchaeffler Technologies AG & Co. KG | 単一のダンパを備えたハイブリッド駆動モジュール |
-
2020
- 2020-02-10 DE DE102020201590.2A patent/DE102020201590A1/de not_active Withdrawn
-
2021
- 2021-02-04 EP EP21703445.3A patent/EP4103864A1/de not_active Withdrawn
- 2021-02-04 WO PCT/EP2021/052663 patent/WO2021160510A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021160510A1 (de) | 2021-08-19 |
| DE102020201590A1 (de) | 2021-08-12 |
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