Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
  • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
  • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
  • B60K6/48—Parallel type
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
  • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
  • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
  • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
  • B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
  • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
  • B60K6/22—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
  • B60K6/405—Housings
• • 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
  • F16D25/00—Fluid-actuated clutches
  • F16D25/10—Clutch systems with a plurality of fluid-actuated clutches
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
  • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
  • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
  • B60K6/48—Parallel type
  • B60K2006/4825—Electric machine connected or connectable to gearbox input shaft
• • 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
  • F16D21/00—Systems comprising a plurality of actuated clutches
  • F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
  • F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric
  • F16D2021/0661—Hydraulically actuated multiple lamellae clutches
• • 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
  • F16D25/00—Fluid-actuated clutches
  • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
  • F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
• • 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 the field of transmissions for motor vehicles. It relates in particular to a torque transmission device intended to be arranged in the drive train of a motor vehicle, between a heat engine and a gearbox.
• the invention more specifically relates to a torque transmission device for a hybrid type of motor vehicle in which a rotating electrical machine is arranged in the traction chain.
• transmission assemblies arranged between the gearbox and the engine and comprising a rotating electrical machine and a clutch on the motor side for coupling in rotation the crankshaft of the engine to the rotor of the rotating electric machine.
• the rotating electrical machine can also constitute an electric brake or bring a surplus of energy to the engine to assist or prevent it from stalling.
• the rotating electrical machine can also drive the vehicle. When the engine is running, the rotating electrical machine acts as an alternator.
• Such a transmission assembly can also link the rotating electrical machine to the gearbox by two separate torque paths each comprising an output clutch and a gearbox input shaft.
• the document DE102007003107 discloses a triple clutch in which the actuations are of the piston type with actuating chamber and balancing chamber.
• a problem of this type of architecture lies in the complexity of mounting the transmission device. The invention thus aims to allow to benefit from a torque transmission device for a reliable and simplified mounting. The invention also aims to allow to benefit from a torque transmission device to reconcile the requirements of axial and radial compactness while having a long life and significant efficiency.
• the rotating electrical machine and its components are particularly heavy and have an unbalance related to their manufacture and assembly, which is likely to increase the load on the support of the rotor.
• acceleration of the vehicle can multiply by 10 or 20 the load on the rotor support. It is therefore also necessary to have a torque transmission device for supporting and rotating this rotating electrical machine and in particular the rotor.
• the invention achieves this, in one of its aspects, by means of a torque transmission device, in particular for a motor vehicle, comprising:
• a torque input element rotating about an axis X, able to be coupled in rotation to a crankshaft of a heat engine
• a first torque output element adapted to be coupled in rotation to a first input shaft of a gearbox
• a rotary electric machine comprising a rotor
• an intermediate element defining a rotor support, said intermediate element and said rotor being arranged in the direction of the transmission of torque between the input element and the first output element and being selectively connected to the input element by an input clutch and the first output member by a first output clutch,
• a protective casing arranged to at least partially enclose the torque input element, the torque output element, the rotating electrical machine, the intermediate element and the actuating member, and
• At least one rolling member arranged radially between the intermediate element and the protective casing
• the radial succession is understood in terms of radial distance.
• the input clutch, the actuating member associated with the input clutch and a rolling member radially follow one another towards the X axis.
• the device has two bearing members arranged radially between the intermediate element and the protective casing.
• the presence of these two bearings makes it possible to obtain improved guidance of the electric motor by the protective casing.
• these rolling members are arranged on the same radial height.
• the inner and outer diameters of the rolling members are then identical.
• the two bearing members are arranged on two different radial heights.
• the two rolling members are spaced axially by at least 20 mm.
• the intermediate element is carried only by the protective casing.
• the electric machine is guided in rotation only by the protective casing optimally and without decreasing its effectiveness over time.
• the device has a mechanical connection, pivot type, particularly robust between the rotor of the electric machine, via the rotor support, function occupied by the intermediate element, and the protective housing as a fixed element.
• the at least one rolling member is a ball joint and provides a pivot connection essential for the proper guidance of the rotating electrical machine.
• the kinematic study of a rolling member (generally a single-row ball bearing) leads to modeling this component by a ball joint connection.
• the mechanical actions transmissible by the contacts between the balls and the rings are essentially radial or oblique and concurrent.
• the torsor of the mechanical actions transmissible by a bearing is therefore similar to that of a ball joint.
• the at least one rolling member is a bearing with a row of balls.
• the intermediate element is carried by the protective casing only via at least one rolling member.
• This has the advantage of reducing the number of intermediate piece between the rotor and the part carrying the rotor, in this case the protective housing. Indeed, too many intermediate parts leads to an increase in the side chain that results in an increase in the gap between the stator and the rotor and therefore a decrease in efficiency via a drop in the magnetic field.
• only the rolling element or members constitute the intermediate parts between the protective casing and the intermediate element when the latter is carried by the casing.
• the intermediate element is carried by the protective casing via at least one rolling member and an additional piece, said part preferably being the torque input member.
• the rolling element or members are not the only intermediate parts between the protective casing and the intermediate element when the latter is carried by the casing.
• the at least one rolling member comprises an inner ring and an outer ring, said inner ring being in contact with the intermediate element and said outer ring being in contact with the protective casing.
• the device further comprises an actuating member with a rotary stop associated with the first output clutch, wherein the first input clutch, the associated actuating member. the first output clutch, the actuating member associated with the input clutch and the at least one rolling member radially succeed each other in approaching the X axis.
• the first input clutch, the actuating member associated with the first output clutch, the actuating member associated with the input clutch are located on a first side. of the device 1, advantageously side thermal engine.
• the at least one rolling member is disposed between a radial end of the protective housing and an axial portion of the intermediate element.
• the device further comprises:
• a second torque output element able to be coupled in rotation to a second input shaft of a gearbox, said second output element being arranged in parallel with the first torque output element in the transmission direction; of torque, the rotor being selectively connected to the second output member by a second output clutch and
• the first output clutch, the second output clutch and the actuating member associated with the second output clutch are successively radially close to the X axis.
• the first output clutch, the second output clutch and the actuating member associated with the second output clutch are situated on a second side of the device, advantageously on the gearbox side.
• a device can be considered extremely compact radially and axially.
• the clutches and the actuating members are equitably distributed so as to minimize the axial and radial dimensions.
• the first output clutch is that located radially outward, that is to say the furthest from the axis of rotation X of the device.
• the second outlet clutch being that located radially inward, that is to say the closest to the axis of rotation of the device.
• the input clutch and / or the first and second output clutches comprise:
• a multi-disk assembly comprising at least one friction disk integral in rotation with one of the input and output disk carriers, at least two plates respectively arranged on either side of each friction disk, integral in rotation on the other hand, inlet and outlet disc holders and friction linings disposed between the platens and a friction disc, the input clutch and / or the first output clutch describing a disengaged position and a position engaged in which said trays and the friction disk pinch the friction liners so as to transmit torque between the input disk carrier and the output disk carrier.
• the intermediate element further defines the output disk carrier of the input clutch and the input disk carrier of the first output clutch.
• the intermediate element defines both the rotor support, the output clutch of the input clutch and the input disk carrier of the first output clutch. This therefore limits the number of parts and facilitates assembly.
• the inlet disk carrier of the input clutch is carried by an axial portion of the intermediate element.
• each actuating member may comprise an annular piston mounted to slide axially outside an inner tube, the piston and the tube forming an actuating chamber.
• each actuating member comprises a rotary stop carried by the piston and cooperating with the force transmission member.
• This actuator is also called “CSC” type actuator ("Concentric Slave Cylinder” in English).
• the operating chamber can be sealed and filled with oil.
• the piston and the tube are fixed in rotation so that the actuating chamber and the oil do not rotate.
• the rotary stop may be a bearing, in particular a rolling bearing.
• the rolling bearing may comprise an inner ring attached to the piston, an outer ring bearing against the force transmission member and rolling bodies interposed between the inner ring and the outer ring.
• the rolling bodies may be balls.
• Each piston can be of revolution around the axis of rotation.
• the shapes of the piston and / or the actuating member may be chosen so that all clutches and actuators are equitably distributed in the device. This makes it possible to contribute to the axial and radial compactness of the device.
• the device further comprises a force transmission member for each of the input clutch, the first output clutch and the second output clutch, each force transmission member being movable. axially to transmit the actuating force from the actuating member to the associated clutch.
• Each force transmission member may have a curved outer radial end defining a bearing surface for exerting axial force on the multi-disk assembly.
• Each force transmission member may have an inner radial end with which it cooperates with the associated actuating member.
• This bearing surface may bear against the end plate of the multi-disk assembly.
• the bearing surface can be continuous.
• the outer radial end may be a continuous ring so that the bearing surface is continuous.
• the outer radial end may comprise a plurality of fingers of axial extension and distributed around the axis so that the bearing surface is discontinuous.
• Each force transmission member, in particular the power transmission member of the input clutch, may have three elbows between which plane portions are interposed. This allows axially compact operation.
• the clutches namely the input clutch and the first and second output clutch can be multidisc type.
• the input and output clutches are wet.
• the clutches being contained in at least one sealed chamber filled with a fluid, especially oil.
• a wet clutch is a clutch which is adapted to operate in an oil bath.
• the first and second output elements may comprise a web whose inner periphery is grooved and adapted to cooperate with a first and a second gearbox shaft, respectively.
• Figure 1 is a sectional view of the torque transmission device according to one embodiment of the invention.
• Figure 2 is a sectional view of the torque transmission device according to another embodiment of the invention.
• a torque transmission device 1 comprising:
• a torque input element 2 rotating about an axis of rotation X, able to be coupled in rotation to a crankshaft of a heat engine (not shown), a first torque output element 3, able to be coupled in rotation to a first input shaft of a gearbox (not represented),
• a second torque output element 4 able to be coupled in rotation to a second input shaft of a gearbox (not shown) and in the example in question, the second output element 4 is arranged in parallel of the first output member 3 in the torque transmission sense.
• Each of these elements rotates about an axis of rotation X of the device.
• the first and second output elements 3, 4 respectively comprise a first and second output interface 3a, 4a whose inner periphery is grooved and adapted to cooperate respectively with a first and a second gearbox shaft.
• a torsion damper device (not shown) can be positioned between the crankshaft of the engine and the torque input member 2.
• the device also comprises a rotating electrical machine 12 comprising a rotor 13 and a stator 14.
• the stator 14 is fixed and arranged around the rotor 13.
• the rotor 13 is arranged in the direction of the transmission of torque between the input element of the couple 2 on the one hand and the first output element 3 on the other.
• the rotating electrical machine 12 is a synchronous machine with permanent magnets.
• the rotor 13 of the rotating electrical machine is selectively connected to the input element 2 by an input clutch 10, to the first output element 3 by a first output clutch 20, and to the second output element 4 by a second output clutch 30.
• the device 1 also comprises an intermediate element 5 defining a rotor support.
• the intermediate element 5 is arranged between the torque input element 2 and the first 3 and second 4 torque output element, in the torque transmission sense.
• an additional piece 19 secured to the intermediate element 5 is provided as a rotor support.
• the rotor is disposed directly on the intermediate member 5 without additional parts.
• the intermediate element 5 keeps the rotating electrical machine 12 in rotation.
• the rotating electrical machine 12 is then called "in-line", that is, say that the axis of rotation of the rotating electrical machine 12 coincides with the axis of rotation X of the torque transmission device 1.
• the input clutch 10 selectively and frictionally couples the torque input member 2 and the intermediate member 5 and comprises:
• a multi-disk assembly 13 comprising a plurality of friction disks, here five, integral in rotation with the output disk carrier 11, a plurality of trays respectively disposed on either side of each friction disk, integral in rotation with the disk carrier; inlet 12 and friction linings disposed between the platens and a friction disk, fixed on each side of the friction discs, the clutch 10 describing a disengaged position and an engaged position in which said platens and the friction disk pinch the linings friction to transmit a torque between the input disk carrier and the output disk carrier.
• Each disk carrier 11, 12 synchronizes in rotation all the trays and the set of friction discs.
• Each disc holder 11, 12 has a cylindrical skirt on which the trays and the friction discs are mounted.
• the friction discs of the multi-disc assembly 13 cooperate with the cylindrical skirt of the input disc carrier 11 along their radially inner periphery by fluting.
• the friction discs are radially outwardly of the cylindrical skirt.
• the trays of the multi-disk assembly 13 cooperate with the cylindrical skirt of the output disk carrier 12 according to their radially outer periphery by fluting.
• the trays are therefore radially inside the cylindrical skirt.
• the device also comprises a first output clutch 20 selectively and frictionally coupling the intermediate element 5 and the first output element 3.
• the first output clutch 20 comprises:
• a multi-disk assembly 23 comprising a plurality of friction disks, here four, integral in rotation with the outlet disk carrier 22, a plurality of trays respectively disposed on either side of each friction disk, integral in rotation with the disk carrier; inlet 21 and friction linings disposed between the platens and a friction disc, fixed on each side of the friction discs, the clutch 20 describing a disengaged position and an engaged position in which said platens and the friction disk pinch the linings friction to transmit a torque between the input disk carrier and the output disk carrier.
• Each disc holder 21, 22 has a cylindrical skirt on which the trays and the friction discs are mounted.
• the friction discs of the multidisk assembly 23 cooperate with the cylindrical skirt of the output disk carrier 22 according to their radially outer periphery by fluting. The friction discs are therefore radially inside the cylindrical skirt.
• the trays of the multidisk assembly 23 cooperate with the cylindrical skirt of the inlet disk carrier 21 according to their radially outer periphery by splines. The trays are therefore radially inside the cylindrical skirt.
• the device 1 comprises a second output clutch 30, selectively and frictionally coupling the intermediate element 5 and the first output element 4.
• the second output clutch 30 comprises:
• a multidisk assembly 33 comprising a plurality of friction discs, here five.
• the intermediate element 5 also defines the input disk carrier of the second output clutch 30.
• the multi-disk assembly 33 has the same technical characteristics as the multi-disk assembly of the clutch 20.
• the linings can be fixed to the friction discs, in particular by gluing, in particular by riveting, in particular by overmolding.
• the fittings are fixed on the trays.
• Each disk carrier 11, 12, 21, 22, 31, 32 can synchronize in rotation all the trays or all of the friction discs.
• the trays can be integral in rotation with the input disk carrier 11, 21, 31 and the friction disks can be integral with the output disk carrier 12, 22, 32.
• the plates can be integral in rotation with the output disk carrier 12, 22, 32.
• the disks can be integral in rotation with the input disk carrier 1 1, 21, 31.
• the clutches are wet type and have between two and seven friction discs, preferably four friction discs. Such multi-disk clutches can limit the radial height to limit the axial extent.
• the output clutches 20, 30 may be arranged not to be simultaneously in the same engaged configuration. On the other hand, they can simultaneously be configured in their disengaged position.
• the first output clutch 20 and the second output clutch 30 radially follow one another towards the X axis. There is a plane perpendicular to the axis of rotation which cuts the output clutches 20 and 30. .
• the device 1 further comprises a protective casing 46.
• the protective casing 46 consists of a radial wall 46a and an axial portion 46b.
• the axial portion 46b defines a radial end, in particular the radially inner end of the protective casing 46.
• the device 1 comprises an actuating member 40 and a force transmission member 41 associated with the input clutch 10.
• a holding member in the disengaged position such as a coil spring used in the example considered can be provided to repel the organ of force transmission 41 of the input clutch 10.
• the input clutch is of the "normally open" type.
• the force transmission member 41 is axially movable to transmit the actuating force of the actuating member 40 to the input clutch 10.
• the force transmission member exerts an axial force on the multi-disk assembly 13 for moving the trays to the disks.
• the actuation is thus of the "pushed" type.
• the force transmission member 41 has a curved outer radial end defining a bearing surface for exerting the axial force on the multi-disk assembly, continuous or discontinuous in the example in question.
• the force transmission member 41 of the input clutch 10 has three bends between which are interposed flat portions. This allows axially compact operation.
• the actuating member 40 comprises an annular piston 42 mounted to slide axially on the outside of an inner tube, the piston 42 and the tube forming an actuating chamber 43.
• the actuating member 40 comprises a rotary stop , which is here a rolling bearing 44, carried by the piston 42 and cooperating with an inner radial end of the force transmission member 41.
• the fluidic pressures associated with the "engaged” and “disengaged” positions are the pressures of the operating chamber 43.
• the rolling bearing 44 has an outer ring attached to the piston, an inner ring bearing against the force transmission member and rolling bodies interposed between the inner ring and the outer ring.
• the piston 42 is of revolution about the axis of rotation X.
• the tube of the actuating member 40 of the input clutch is formed in the protective casing 46 which defines a fluid supply network of the actuating member 40 as well as the cooling circuit of the clutch 10.
• the clutches 10, 20, 30 are arranged in a sealed chamber containing oil, the protective casing 46 defines in part this sealed chamber.
• the device 1 comprises two bearing members 47 supporting the intermediate element 5, here two ball bearings.
• the rolling members 47 are arranged radially between the intermediate element 5 and the protective casing 46. More particularly, the rolling members 47 are disposed between a radial end of the protective casing 46, such as the axial portion 46b and a portion axial 5a of the intermediate element 5.
• each bearing member 47 has an inner ring 47a and an outer ring 47b.
• each inner ring 47a is in contact with the intermediate element 5, preferably with the axial portion 5a of the intermediate element 5 and each outer ring 47b is in contact with the protective casing, preferably with the axial portion 46b of the protective casing 46.
• the input clutch 10, the actuating member 40 associated with the input clutch 10 and at least one rolling member 47 follow one another radially towards the X axis.
• the input clutch 10, the actuating member 40 associated with the input clutch 10 and the two rolling members 47 radially follow one another towards the X axis.
• the two rolling members are axially spaced apart by a distance "I".
• the distance "I” is at least 20 mm.
• the axial distance "I” corresponds to the edge-to-edge distance of the axially facing edges of each rolling member 47.
• a circlip is provided on the axial portion 5a in order to axially lock a rolling member 47.
• the protective casing 46 is arranged to at least partially enclose the torque input member 2, the torque output member 3, the rotating electric machine 12, the intermediate member 5 and the actuating member 40 .
• the device 1 also comprises an actuating member 50, in particular an actuating device with a rotary stop and a force transmission member 51 associated with the first output clutch 20.
• the force transmission member 51 is axially movable to transmit the actuating force of the actuating member 50 to the input clutch 20.
• the first input clutch 10, the actuating member 50 associated with the first output clutch 20, the actuating member 40 associated with the input clutch 10 and at least one rolling member 47 follow radially towards the X axis.
• the device 1 also comprises an actuating member 60 and a force transmission member 61 associated with the second output clutch 30.
• the force transmission member 61 is axially movable to transmit the actuating force of the organ actuating device 60 to the second output clutch 30.
• a holding member in the disengaged position such as a coil spring can be provided to push the force transmission members 51, 61 of the output clutches 20, 30.
• the output clutches 20, 30 are of the "normally open” type .
• actuating members 50, 60 have the same elements as those detailed in connection with the actuating member 40 of the input clutch.
• the actuating members 40 and 50 are housed in the same envelope and form a single component conventionally called hydraulic control system or double concentric actuator.
• the actuating members 40 and 50, in particular their actuating chamber, as well as the input clutch 10 are stacked radially on the thermal engine side while the actuating member 60 and the output clutches 20 and 30 are stacked radially next gearbox.
• This architecture contributes to the axial and radial compactness of the device.
• the actuating members 50 and 60 are housed in one and the same envelope and form a single component conventionally called hydraulic control system or double concentric actuator.
• the shapes of the pistons and / or the actuating members 40, 50, 60 are chosen so that they can be stacked radially, which contributes to the axial compactness of the device 1.
• the force transmission members 41, 51, 61 of the clutches 10, 20, 30 each have a curved outer radial end defining a bearing surface for exerting the axial force on the multi-disk assemblies, 13, 23, 33. Actuation is thus of the "pushed" type.
• the outer radial end of three force transmission members 41, 51, 61 comprises a plurality of axial extension fingers, respectively numbered 73, 53, 63, and distributed around the X axis of so that their bearing surface is discontinuous.
• the fingers 73, 53 pass here through openings in the intermediate element 5.
• These fingers 73, 53 allow the force-transmitting members 41, 51 to be able to actuate the multi-disk assembly through the intermediate element 5.
• FIG. 2 describes a second embodiment according to the invention similar to that of FIG. A difference in the example considered lies in the fact that the intermediate element 5 is carried by the protective casing 46 by means of two rolling members 47 and an additional piece, in this case the element d torque input 2.
• the electrical machine 12 is carried both by the protective casing 46 via the rolling members 47, the torque input element 2 and the intermediate element 5 on the one hand and the disc carrier inlet 21, 31 of the outlet clutches 20, 30 and another bearing member 48 on the other hand.
• the rolling member 48 and the outlet clutches 20, 30 are stacked radially.
• the actuating members 50 and 60 are housed in the same casing and form a single component conventionally called hydraulic control system or double concentric actuator.
• the first output clutch 20, the second output clutch 30, the actuating member 50 and the actuating member 60 radially alternate with each other in the direction of the X axis.

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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)
• Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
• Hybrid Electric Vehicles (AREA)

Applications Claiming Priority (2)

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ID=63080141

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• 2018
  • 2018-06-05 FR FR1854888A patent/FR3081949B1/fr active Active
• 2019
  • 2019-06-05 WO PCT/EP2019/064738 patent/WO2019234135A1/fr unknown
  • 2019-06-05 CN CN201980042936.1A patent/CN112334348A/zh active Pending
  • 2019-06-05 EP EP19736985.3A patent/EP3802186A1/de active Pending

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