CN112334348A - Transmission for hybrid vehicle - Google Patents

Transmission for hybrid vehicle Download PDF

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Publication number
CN112334348A
CN112334348A CN201980042936.1A CN201980042936A CN112334348A CN 112334348 A CN112334348 A CN 112334348A CN 201980042936 A CN201980042936 A CN 201980042936A CN 112334348 A CN112334348 A CN 112334348A
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CN
China
Prior art keywords
clutch
output
input
torque
torque transmission
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Pending
Application number
CN201980042936.1A
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Chinese (zh)
Inventor
T.吉诺特
J-F.布加德
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Valeo Embrayages SAS
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Valeo Embrayages SAS
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Publication of CN112334348A publication Critical patent/CN112334348A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • 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

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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)

Abstract

The invention relates to a torque transmission device (1) comprising: a torque input element (2); a first torque output element (3); a rotating electrical machine (12) comprising a rotor (13); an intermediate element (5) defining a rotor support; an actuating member (40) having a rotational stop associated with the input clutch (10); -a protective housing (46) arranged to at least partially enclose the torque input element (2), the torque output element (3), the rotating electrical machine (12), the intermediate element (5) and the actuating member (40), and-at least one rolling member (47) arranged radially between the intermediate element (5) and the protective housing (46), wherein the input clutch (10), the actuating member (40) associated with the input clutch (10) and the at least one rolling member (47) are consecutive to each other in a radial direction towards the axis (X).

Description

Transmission for hybrid vehicle
Technical Field
The present invention relates to the field of transmissions for motor vehicles. The invention relates in particular to a torque transmission device which is arranged in the drive train of a motor vehicle between an internal combustion engine and a gearbox.
The invention relates in particular to a torque transmission device for a hybrid vehicle, in which a rotating electric machine is arranged in a drive train.
Background
Transmission assemblies arranged between a gearbox and an internal combustion engine are known in the prior art, comprising a rotating electrical machine and a clutch on the engine side, which couples the crankshaft of the internal combustion engine rotationally to the rotor of the rotating electrical machine. Therefore, it is possible to shut down the internal combustion engine each time the vehicle stops, and restart the internal combustion engine using the rotating electrical machine. The rotating electrical machine may also constitute an electric brake or provide power boost (power boost) to the internal combustion engine to assist it or prevent it from stalling. The rotating electric machine may also drive the vehicle. When the engine is running, the rotating electrical machine may act as an alternator. Such a transmission assembly may also connect the rotating electrical machine to the gearbox through two separate torque paths, each torque path including an output clutch and a gearbox input shaft.
There are devices comprising three separate actuating members for actuating three clutches, an input clutch between the engine combustion engine and the rotating electrical machine, and two output clutches between the rotating electrical machine and two input shafts of the gearbox. In these devices, the rotating electrical machine includes a stator and a rotor that is driven to rotate about a rotation axis. DE102007003107 discloses a triple clutch in which the actuator is a piston actuator having an actuation chamber and a balancing chamber. One problem with this type of architecture is the installation complexity of the transmission.
Disclosure of Invention
It is therefore an object of the present invention to make it possible to benefit from a torque transmission device which allows a reliable and simplified installation. It is also an object of the present invention to benefit from a torque transmission device that can compromise axial and radial compactness requirements while having a long service life and high efficiency.
Rotating electrical machines and their components (rotor, stator, sensor(s), etc.) are particularly heavy and include imbalances associated with their manufacture and assembly, which can increase the load on the rotor support. Furthermore, the acceleration of the vehicle may multiply the load on the rotor support by 10 or 20. Therefore, it is also desirable to have a torque transmission device that is capable of supporting and guiding the rotation of the rotating electrical machine, and in particular the rotor.
According to one aspect of the invention, this object is achieved by a torque transmission device, in particular for a motor vehicle, comprising:
a torque input element rotating about an axis X and rotatably coupled to a crankshaft of the internal combustion engine,
a first torque output element rotatably coupled to a first input shaft of the gearbox,
-a rotating electric machine comprising a rotor,
an intermediate element defining a rotor support, the intermediate element and the rotor being arranged between the input element and the first output element in the direction of torque transmission and being selectively connected to the input element by the input clutch and to the first output element by the first output clutch,
an actuating member having a rotational stop associated with the input clutch,
a protective housing arranged to at least partially enclose the torque input element, the torque output element, the rotary electric machine, the intermediate element and the actuating member, an
-at least one rolling member arranged radially between the intermediate element and the protective housing,
wherein the input clutch, the actuating member associated with the input clutch and the at least one rolling member are radially successive to each other towards the axis X.
This configuration thus makes it possible to stack the elements radially, thus obtaining an axially compact device.
Radial succession is understood in the sense of the invention as a function of radial distance.
In the following description and claims, by way of non-limiting example and for the sake of easy understanding, the terms "front" or "rear" will be used with reference to a direction relative to an axial orientation determined by the main axis of rotation X of the transmission of the motor vehicle, and the terms "inner/inner" or "outer/outer" will be used with reference to the axis X and with reference to a radial orientation orthogonal to said axial orientation.
According to another aspect of the invention, the input clutch, the actuating member associated with the input clutch and one rolling member are consecutive to each other in a radial direction towards the axis X.
According to a further aspect of the invention, the device has two rolling members arranged radially between the intermediate element and the protective housing. The presence of these two ball bearings makes it possible to obtain an improved guidance of the electric motor by means of the protective housing.
According to an aspect of the invention, the rolling members are arranged at the same radial height. Advantageously, the inner and outer diameters of the rolling members are then the same.
According to a variant, the two rolling members are arranged at two different radial heights.
According to another aspect of the invention, the two rolling members are axially spaced apart by at least 20 mm.
According to another aspect of the invention, the intermediate element is held only by the protective housing. The motor is therefore guided in rotation only in an optimized manner by the protective housing without a reduction in efficiency over time. The device has a particularly robust mechanical connection of the pivot type between the rotor of the electrical machine and the protective housing as a stationary element via a rotor support, the function of which is performed by the intermediate element.
The at least one rolling member is a ball joint connection and provides the necessary pivotal connection for properly guiding the rotating electrical machine. Kinematic studies of rolling elements (usually bearings with an array of balls) show that the components are modeled by a ball joint connection. The mechanical action that can be transmitted by the contact between the balls and the races is substantially radial or oblique and intersects. The screw theory with regard to the mechanical action that can be transmitted by means of ball bearings is therefore similar to that of a ball joint connection.
Advantageously, the at least one rolling member is a ball bearing having a row of balls.
According to another aspect of the invention, the intermediate element is held by the protective housing only by the at least one rolling member. This has the advantage of reducing the number of intermediate parts between the rotor and the part holding the rotor (in this case the protective housing). Too many intermediate parts result in an increase in the dimensional chain, which results in an increase in the gap between the stator and the rotor and thus a decrease in efficiency due to a decrease in the magnetic field. According to this aspect, when the intermediate element is held by the housing, only one or more rolling members are thus formed as intermediate parts between the protective housing and the intermediate element.
As a variant, the intermediate element is held by the protective housing by means of at least one rolling member and an additional component, which is preferably a torque input element. According to this aspect, the one or more rolling members therefore do not form the only intermediate part between the protective casing and the intermediate element, when the intermediate element is held by the casing.
According to another aspect of the invention, the at least one rolling member includes an inner race in contact with the intermediate member and an outer race in contact with the protective housing.
According to another aspect of the invention, the device further comprises an actuating member having a rotational stop associated with the first output clutch, wherein the first input clutch, the actuating member associated with the first output clutch, the actuating member associated with the input clutch and the at least one rolling member are consecutive to each other in a radial direction towards the axis X.
According to another aspect of the invention, the first input clutch, the actuating member associated with the first output clutch and the actuating member associated with the input clutch are located on a first side of the device 1, advantageously on the internal combustion engine side.
According to another aspect of the invention, the at least one rolling member is arranged between a radial end of the protective housing and an axial portion of the intermediate element.
According to another aspect of the invention, the apparatus further comprises:
-a second torque output element rotatably coupled to a second input shaft of the gearbox, the second output element being arranged in parallel with the first torque output element in the direction of torque transmission, the rotor being selectively connected to the second output element by a second output clutch, and
-a third actuating member having a rotational stop associated with the second output clutch.
According to another aspect of the invention, the first output clutch, the second output clutch and the actuating member associated with the second output clutch are consecutive to one another in a radial direction towards the axis X.
According to another aspect of the invention, the first output clutch, the second output clutch and the actuating member associated with the second output clutch are located on a second side of the device, advantageously on the gearbox side. Thus, such a device can be considered to be very compact both in the radial and axial directions. The clutch and actuating members are evenly distributed to minimize axial and radial footprint.
Within the meaning of the present application, the first output clutch is the radially outer clutch, i.e. furthest from the axis of rotation X of the device. The second output clutch is the radially inner clutch, i.e. closest to the axis of rotation of the device.
According to another aspect of the invention, there is a plane perpendicular to the axis of rotation that intersects simultaneously the first output clutch, the second output clutch, and the actuating member associated with the second output clutch.
According to another feature of the invention, the input clutch and/or the first and second output clutches comprise:
an input disc carrier rigidly connected to a torque input member for the input clutch for rotation therewith and rigidly connected to an input drive plate for the first output clutch for rotation therewith,
-an output disc carrier rigidly connected to an input drive plate for an input clutch for rotation therewith and rigidly connected to a first output element for a first output clutch for rotation therewith, and
-a multi-disc assembly comprising: at least one friction disc rigidly connected to one of the input and output disc supports for rotation therewith; at least two plates, respectively disposed on either side of each friction disc, rigidly connected to the other of the input and output disc carriers for rotation therewith; and a friction lining disposed between the plate and the friction disc, the input clutch and/or the first output clutch describing a disengaged position and an engaged position in which the plate and the friction disc sandwich the friction lining for transmitting torque between the input disc support and the output disc support.
According to one aspect of the invention, the intermediate element further defines an output disc carrier of the input clutch and an input disc carrier of the first output clutch. The intermediate element thus defines simultaneously the rotor support, the output disc carrier of the input clutch and the input disc carrier of the first output clutch. Therefore, this makes it possible to limit the number of parts and facilitate mounting.
According to another aspect of the invention, the input disc carrier of the input clutch is retained by an axial portion of the intermediate member.
According to one aspect of the invention, each actuating member may comprise an annular piston mounted to slide axially outside an inner tube, the piston and tube forming an actuating chamber.
According to one aspect of the invention, each actuating member comprises a rotational stop held by the piston and interacting with the force transmission member. This actuating member is also known as a CSC ("Concentric Slave Cylinder") actuator. The actuation chamber may be sealed and filled with oil. The piston and tube are rotationally fixed so that the actuation chamber and oil do not rotate.
According to an aspect of the invention, the rotational stop may be a bearing, in particular a rolling bearing. The rolling bearing may include an inner race fixed to the piston, an outer race pressed against the force transmission member, and rolling bodies interposed between the inner race and the outer race. Preferably, the rolling elements may be balls.
Each piston may be a piston that rotates about an axis of rotation.
The shape of the piston and/or the actuating member may be chosen such that all clutches and actuators are evenly distributed in the device. This makes it possible to contribute to the axial and radial compactness of the device.
According to another aspect of the invention, 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 axially movable so as to transmit an 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 applying axial forces on the multi-disc assembly. Each force transmission member may have a radially inner end by which it interacts with the associated actuation member.
The bearing surface may press against an end plate of the multi-disc assembly. The support surface may be continuous. The radially outer end may be a continuous ring, whereby the bearing surface is continuous. The radially outer end may include a plurality of fingers extending axially and distributed about the axis such that the bearing surface is discontinuous.
Each force transmission member, in particular the force transmission member of the input clutch, may have three elbows, between which a flat portion is provided. This allows an axially compact actuation.
According to the invention, the clutches, i.e. the input clutch and the first and second output clutches, may be of the multi-plate type.
According to one feature of the invention, the input clutch and the output clutch are wet. The clutch is accommodated in at least one sealed chamber filled with a fluid, in particular oil. Within the meaning of the present application, a wet clutch is a clutch suitable for operation in an oil bath.
According to an aspect of the invention, the first output element and the second output element may comprise a drive plate, the inner periphery of which is splined and able to interact with the first gearbox shaft and the second gearbox shaft, respectively.
According to another aspect of the invention, there is a plane perpendicular to the axis X that intersects both the input clutch, the actuating member associated with the input clutch and the at least one rolling member.
Drawings
The invention will be better understood and other objects, details, characteristics and advantages thereof will become more apparent from the following description of particular embodiments thereof, given by way of non-limiting illustration only, with reference to the accompanying drawings. In the drawings:
FIG. 1 is a cross-sectional view of a torque transmitting device according to one embodiment of the present invention;
FIG. 2 is a cross-sectional view of a torque transmitting device according to another embodiment of the present invention.
Detailed Description
Referring to fig. 1, a torque transmission device 1 is shown, comprising:
a torque input element 2 rotating about a rotation axis X and rotatably coupled to a crankshaft of an internal combustion engine (not shown),
a first torque output element 3 rotatably coupled to a first input shaft of a gearbox (not shown),
a second torque output element 4 rotatably coupled to a second input shaft of the gearbox (not shown), and
in the example considered, the second output element 4 is arranged parallel to the first output element 3 in the direction of torque transmission. Each of these elements rotates about the axis of rotation X of the device.
The first output member 3 and the second output member 4 comprise a first output interface 3a and a second output interface 4a, respectively, the inner peripheries of the first output interface 3a and the second output interface 4a being splined and capable of interacting with a first gearbox shaft and a second gearbox shaft, respectively.
A torsional vibration damper arrangement (not shown) may be positioned between the crankshaft of the internal combustion engine and the torque input member 2.
The device further comprises a rotating electrical machine 12, which rotating electrical machine 12 comprises a rotor 13 and a stator 14. The stator 14 is stationary and arranged around the rotor 13. The rotor 13 is arranged between the torque input element 2 and the first output element 3 in the direction of torque transmission.
In the example considered, the rotating electrical machine 12 is a synchronous machine with permanent magnets.
The rotor 13 of the rotary electric machine is selectively connected to the input member 2 through the input clutch 10, to the first output member 3 through the first output clutch 20, and to the second output member 4 through the second output clutch 30.
The device 1 further comprises an intermediate element 5 defining a rotor support. In the example considered, the intermediate element 5 is arranged between the torque input element 2 and the first and second torque output elements 3, 4 in the direction of torque transmission. In the example considered, an additional component 19 rigidly connected to the intermediate element 5 is provided as a rotor support. As a variant, the rotor is arranged directly on the intermediate element 5 without additional components.
Thus, the intermediate member 5 keeps the rotating electrical machine 12 rotating. The rotary electric machine 12 is then said to be "in-line", i.e. the axis of rotation of the rotary electric 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 includes:
an input disc carrier 11 rigidly connected to the torque input element 2 for rotation therewith,
an output disc support 12 defined by the intermediate element 5, and
a multi-disc assembly 13 comprising: a plurality of friction discs, in this case five, rigidly connected to the output disc carrier 11 for rotation therewith; a plurality of plates, respectively arranged on either side of each friction disc, rigidly connected to the input disc carrier 12 for rotation therewith; and friction linings disposed between the plates and the friction disks, fixed on either side of the friction disks, the clutch 10 describing a disengaged position and an engaged position in which the plates and the friction disks sandwich the friction linings to transmit torque between the input and output disk supports.
Each disc holder 11, 12 synchronizes the rotation of all plates and all friction discs. Each disc holder 11, 12 comprises a cylindrical skirt on which the plates and friction discs are mounted.
The friction discs of the multiple disc assembly 13 interact along their radially inner periphery with a cylindrical skirt of the input disc carrier 11 by means of splines. The friction discs are thus radially outside the cylindrical skirt.
The plates of the multi-disc assembly 13 interact along their radially outer periphery with a cylindrical skirt of the output disc carrier 12 by means of splines. Thus, these plates are radially inside the cylindrical skirt.
In the example considered, the device also comprises a first output clutch 20, which first output clutch 20 selectively and frictionally couples the intermediate element 5 and the first output element 3.
The first output clutch 20 includes:
an input disc support 21 defined by the intermediate element 5
An output disc carrier 22 rigidly connected to the first output element 3 for rotation therewith, and
a multi-disc assembly 23 comprising: a plurality of friction discs, in this case four, rigidly connected to the output disc support 22 for rotation therewith; a plurality of plates, respectively arranged on either side of each friction disc, rigidly connected to the input disc carrier 12 for rotation therewith; and friction linings disposed between the plates and the friction disks, fixed on either side of the friction disks, the clutch 20 describing a disengaged position and an engaged position in which the plates and the friction disks sandwich the friction linings to transmit torque between the input and output disk supports.
Each disc support 21, 22 comprises a cylindrical skirt on which the plates and friction discs are mounted.
The friction discs of the multiple disc assembly 23 interact along their radially outer periphery with a cylindrical skirt of the output disc carrier 22 by means of splines. The friction discs are thus radially inside the cylindrical skirt.
The plates of the multi-disc assembly 23 interact along their radially outer periphery with a cylindrical skirt of the input disc carrier 21 by means of splines. Thus, these plates are radially inside the cylindrical skirt.
In the example considered, the device 1 comprises a second output clutch 30, the second output clutch 30 selectively and frictionally coupling the intermediate element 5 and the first output element 4.
The second output clutch 30 includes:
an input disc carrier 31 rigidly connected to the intermediate element 5 so as to rotate therewith,
and an output disc carrier 32 rigidly connected to the second output element 4, an
A multiple disc assembly 33 comprising a plurality of friction discs, in this case five friction discs.
In the example considered, the intermediate element 5 also defines the input disc carrier of the second output clutch 30, although it is in two distinct parts. The multiple disc assembly 33 has the same technical features as the multiple disc assembly of the clutch 20.
In a manner common to the three clutches 10, 20 and 30, a lining can be fixed to the friction disk, in particular by adhesion, in particular by riveting, in particular by overmolding. Alternatively, the lining is fixed to the plate.
Each disc holder 11, 12, 21, 22, 31, 32 is capable of synchronizing the rotation of all plates and all friction discs.
According to one aspect of the invention, the plates may be rigidly connected to the input disc support 11, 21, 31 for rotation therewith, and the friction discs may be rigidly connected to the output disc support 12, 22, 32 for rotation therewith. As a variant, the plates may be rigidly connected to the output disc support 12, 22, 32 for rotation therewith. The disc may be rigidly connected to the input disc holder 11, 21, 31 for rotation therewith.
The clutch is a wet clutch and comprises two to seven friction discs, preferably four friction discs. Such a multi-plate clutch may limit radial height and limit axial range.
The output clutches 20, 30 may be arranged such that they are not both in the same engaged configuration. Instead, they may be disposed at separate locations simultaneously.
In the example considered, the first output clutch 20 and the second output clutch 30 are successive to each other in a radial direction towards the axis X. There is a plane perpendicular to the axis of rotation that intersects the output clutches 20 and 30.
In the example considered, the device 1 also comprises a protective casing 46. The protective housing 46 is comprised of a radial wall 46a and an axial portion 46 b. The axial portion 46b defines a radial end, in particular an inner radial end, of the protective housing 46.
In the example considered, the device 1 comprises an actuating member 40 and a force transmission member 41 associated with the input clutch 10. A member for holding in a disengaged position, such as a helical spring used in the example under consideration, may be provided to push the force transmission member 41 back from the input clutch 10. The input clutch is normally open.
The force transmission member 41 is axially movable to transmit an actuating force from the actuating member 40 to the input clutch 10. The force transmission member exerts an axial force on the multi-disc assembly 13 to move the plate towards the discs. Thus, the actuation is of the "push" type.
The force transmission member 14 has a curved outer radial end defining a bearing surface for exerting axial forces on the multi-disc assembly, which in the example considered is continuous or discontinuous.
The force transmission member 41 of the input clutch 10 has three elbows with flat portions disposed therebetween. This allows an axially compact actuation.
The actuating member 40 comprises an annular piston 42, the annular piston 42 being mounted to slide axially outside the inner tube, the piston 42 and the tube forming an actuating chamber 43. The actuating member 40 comprises a rotational stop, in this case a rolling bearing 44, which is held by the piston 42 and interacts with the inner radial end of the force transmission member 41. The fluid pressure associated with the "engaged" and "disengaged" positions is the pressure of the actuation chamber 43.
The rolling bearing 44 includes an outer race fixed to the piston, an inner race pressed against the force transmission member, and rolling bodies interposed between the inner race and the outer race. The piston 42 is a piston that rotates about the rotation axis X.
In the example considered, the tube of the actuating member 40 of the input clutch is formed in a protective casing 46, which defines a network for supplying the actuating member 40 and the cooling circuit of the clutch 10 with fluid.
In the example considered, the clutches 10, 20, 30 are arranged in a sealed chamber containing oil, which is partially defined by a protective casing 46.
In the example considered, the device 1 comprises two rolling members 47, which support the input element 5, in this case two ball bearings. Between the intermediate element 5 and the protective housing 46, rolling members 47 are radially arranged. More specifically, the rolling members 47 are arranged between the radial end (e.g., the axial portion 46b) of the protective housing 46 and the axial portion 5a of the intermediate element 5.
In the example considered, each rolling member 47 comprises an inner race 47a and an outer race 47 b. Advantageously, each inner race 47a is in contact with the intermediate element 5, preferably with the axial portion 5a of the intermediate element 5, and each outer race 47b is in contact with the protective casing, preferably with the axial portion 46b of the protective casing 46.
Advantageously, the input clutch 10, the actuating member 40 associated with the input clutch 10 and the at least one rolling member 47 are consecutive to each other in a radial direction towards the axis X. In the example considered, the input clutch 10, the actuating member 40 associated with the input clutch 10 and the two rolling members 47 are radially consecutive to each other towards the axis X.
In the example considered, the two rolling members are axially spaced apart by a distance "l". Advantageously, the distance "l" is at least 20 mm. As shown in fig. 1, the axial distance "l" corresponds to an edge-to-edge distance of edges of each rolling member 47 that axially face each other.
A snap ring is formed on the axial portion 5a to axially fix one rolling member 47.
The protective housing 46 is arranged to at least partially enclose the torque input element 2, the torque output element 3, the rotary electric machine 12, the intermediate element 5 and the actuating member 40.
In the example considered, the device 1 also comprises an actuating member 50 (in particular a rotation stop actuating member) and a force transmission member 51 associated with the first output clutch 20. The force transmission member 51 is axially movable to transmit an actuation force from the actuation member 50 to the input clutch 20.
Advantageously, 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 the at least one rolling member 47 are consecutive to one another in a radial direction towards the axis X.
The device 1 further 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 actuation force from the actuating member 60 to the second output clutch 30.
A member for holding in a disengaged position, such as a coil spring, may be provided to push the force transmission members 51, 61 back from the output clutches 20, 30. The output clutches 20, 30 are normally open.
These actuating members 50, 60 use the same elements as described in detail in connection with the actuating member 40 of the input clutch.
In the example considered, the actuating members 40 and 50 are housed in the same casing and form a single component commonly referred to as a hydraulic control system or concentric dual actuator. Thus, the actuating members 40 and 50, and in particular the actuating chambers thereof, are radially stacked together with the input clutch 10 on the internal combustion engine side, while the actuating member 60 and the output clutches 20 and 30 are radially stacked on the gearbox side. This architecture contributes to the axial and radial compactness of the device.
According to a variant, the actuating members 50 and 60 are housed in the same casing and form a single component conventionally referred to as a hydraulic control system or concentric dual actuator. The shape of the pistons and/or actuating members 40, 50, 60 is chosen so that they can be radially stacked, 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 applying axial forces on the multi-disc assembly 13, 23, 33. Thus, the actuation is of the "push" type.
In the example considered, the outer radial ends of the three force transmission members 41, 51, 61 comprise a plurality of fingers, respectively referenced 73, 53, 63, which extend axially and are distributed about the axis X so that their bearing surfaces are discontinuous. In the example considered, the fingers 73, 53 pass in this case through openings formed in the intermediate element 5.
These fingers 73, 53 allow the force transmission members 41, 51 to actuate the multi-disc assembly through the intermediate element 5.
Fig. 2 depicts a second embodiment according to the invention, which is similar to the embodiment in fig. 1. One difference in the example considered is that the intermediate element 5 is held by the protective housing 46 by means of two rolling members 47 and an attachment means, in this case the torque input element 2.
In addition, the motor 12 is held by the protective case 46 via the rolling members 47, the torque input element 2, and the intermediate element 5, and is held by the input disc carriers 21, 31 and the other rolling members 48 of the output clutches 20, 30, and 30.
The rolling members 48 and the output clutches 20, 30 are radially stacked.
In the example considered, the actuating members 50 and 60 are housed in the same casing and form a single component commonly referred to as a hydraulic control system or concentric dual actuator.
In the example considered, the first output clutch 20, the second output clutch 30, the actuating member 50 and the actuating member 60 are consecutive to one another in a radial direction towards the axis X.
In the example considered, there is a plane perpendicular to the axis X, which plane intersects both the input clutch 10, the actuating member 40 associated with the input clutch 10 and the at least one rolling member 47.
Although the invention has been described with reference to several particular embodiments, it is clear that the invention is by no means limited thereto and that the invention comprises all technical equivalents of the means described and any combination thereof if they fall within the scope of the invention.
In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

Claims (10)

1. A torque transmission device (1), in particular for a motor vehicle, comprising:
a torque input element (2) rotating about an axis (X) and rotatably coupled to a crankshaft of an internal combustion engine,
a first torque output element (3) rotatably coupled to a first input shaft of the gearbox,
a rotating electrical machine (12) comprising a rotor (13),
an intermediate element (5) defining a rotor support, said intermediate element (5) and said rotor (13) being arranged between the input element (2) and the first output element (3) in a direction of torque transmission and being selectively connected to the input element (2) by an input clutch (10) and to the first output element (3) by a first output clutch (20),
an actuating member (40) having a rotational stop associated with the input clutch (10),
a protective housing (46) arranged to at least partially enclose the torque input element (2), the torque output element (3), the rotating electrical machine (12), the intermediate element (5) and the actuation member (40), and
at least one rolling member (47) arranged radially between the intermediate element (5) and the protective housing (46),
characterized in that said input clutch (10), the actuating member (40) associated with said input clutch (10) and said at least one rolling member (47) are radially successive to each other towards the axis (X).
2. Torque transmission device (1) according to claim 1,
the torque transmission device has two rolling members (47) arranged radially between the intermediate element (5) and the protective housing (46).
3. Torque transmission device (1) according to claim 2,
the two rolling members (7) are axially spaced apart by at least 20 mm.
4. Torque transmission device (1) according to any of the preceding claims,
the intermediate element (5) is held exclusively by the protective housing (46) by means of at least one rolling member (47).
5. Torque transmission device (1) according to any one of claims 1 to 3,
the intermediate element (5) is held by the protective housing (46) by means of at least one rolling element (47) and an additional component, preferably the torque input element (2).
6. Torque transmission device (1) according to any of the preceding claims,
the at least one rolling member (47) includes an inner race (47a) and an outer race (47b), the inner race (47a) being in contact with the intermediate member (5), and the outer race (47b) being in contact with the protective housing (46).
7. Torque transmission device (1) according to any of the preceding claims,
the torque transmission device further comprises an actuating member (50) having a rotational stop associated with the first output clutch (20), wherein 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 the at least one rolling member (47) are consecutive to each other in a radial direction towards the axis (X).
8. Torque transmission device (1) according to any of the preceding claims,
rolling members (47) are arranged between the radial ends of the protective casing (46) and the axial portion (5a) of the intermediate element (5).
9. Torque transmission device (1) according to any of the preceding claims, characterized in that it further comprises:
a second torque output element (4) rotatably coupled to a second input shaft of the gearbox, the second output element (4) being arranged parallel to the first torque output element (3) in the direction of torque transmission, the rotor (12) being selectively connected to the second output element by a second output clutch (30), and
a third actuating member (60) having a rotational stop associated with the second output clutch (30).
10. Torque transmission device (1) according to claim 9,
the first output clutch (20), the second output clutch (30) and an actuating member (60) associated with said second output clutch (30) are consecutive to one another in a radial direction towards the axis (X).
CN201980042936.1A 2018-06-05 2019-06-05 Transmission for hybrid vehicle Pending CN112334348A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1854888 2018-06-05
FR1854888A FR3081949B1 (en) 2018-06-05 2018-06-05 HYBRID VEHICLE TRANSMISSION DEVICE
PCT/EP2019/064738 WO2019234135A1 (en) 2018-06-05 2019-06-05 Transmission device for a hybrid vehicle

Publications (1)

Publication Number Publication Date
CN112334348A true CN112334348A (en) 2021-02-05

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CN201980042936.1A Pending CN112334348A (en) 2018-06-05 2019-06-05 Transmission for hybrid vehicle

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CN (1) CN112334348A (en)
FR (1) FR3081949B1 (en)
WO (1) WO2019234135A1 (en)

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FR3115576B1 (en) * 2020-10-23 2022-12-16 Valeo Embrayages Torque transmission device, in particular for a motor vehicle

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EP3802186A1 (en) 2021-04-14
FR3081949B1 (en) 2021-11-12
WO2019234135A1 (en) 2019-12-12

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Application publication date: 20210205