CN108290490B - Separating clutch for a motor vehicle - Google Patents

Separating clutch for a motor vehicle Download PDF

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Publication number
CN108290490B
CN108290490B CN201680070032.6A CN201680070032A CN108290490B CN 108290490 B CN108290490 B CN 108290490B CN 201680070032 A CN201680070032 A CN 201680070032A CN 108290490 B CN108290490 B CN 108290490B
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CN
China
Prior art keywords
drive unit
output
transmission
clutch
input
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CN201680070032.6A
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Chinese (zh)
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CN108290490A (en
Inventor
M·芬肯策勒
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Schaeffler Technologies AG and Co KG
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Schaeffler Technologies AG and Co KG
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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
    • B60K6/40—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
    • 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
    • F16D13/00—Friction clutches
    • F16D13/22—Friction clutches with axially-movable clutching members
    • F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
    • F16D13/52—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member
    • 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
    • F16D13/00—Friction clutches
    • F16D13/22—Friction clutches with axially-movable clutching members
    • F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
    • F16D13/52—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member
    • F16D13/54—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member
    • F16D13/56—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member in which the clutching pressure is produced by springs only
    • 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
    • F16D13/00—Friction clutches
    • F16D13/76—Friction clutches specially adapted to incorporate with other transmission parts, i.e. at least one of the clutch parts also having another function, e.g. being the disc of a pulley
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/52—Pulleys or friction discs of adjustable construction
    • 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
    • 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
    • B60K2006/4833—Step up or reduction gearing driving generator, e.g. to operate generator in most efficient speed range
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/22—Vibration damping
    • 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

Abstract

The invention relates to a separating clutch (1) for coupling and decoupling a first drive unit (2) relative to a driven unit (3), comprising at least one torsional vibration damper (4) having at least one input part (5) and one output part (6) which have a common axis of rotation and can be rotated in a limited manner relative to one another, and a spring damper arrangement (8) acting between the input part and the output part; an input element, which can be connected in a rotationally fixed manner to the first drive unit, and an output element, which can be connected in a torque-transmitting manner to a transmission belt reel (10) via a clutch device (9), which can be moved between an open operating position and a closed operating position, wherein the transmission belt reel can be driven by a second drive unit via a drive belt (1); the transmission belt pulley can be connected to the output unit in a rotationally fixed manner, so that the output unit can be driven via the second drive unit and/or via the first drive unit.

Description

Separating clutch for a motor vehicle
Technical Field
The invention relates to a separating clutch for coupling and decoupling a first drive unit relative to a driven unit, wherein the separating clutch comprises at least one torsional vibration damper having at least one input and one output, which have a common axis of rotation and can rotate in a limited manner relative to one another, and a spring damper arrangement acting between the input and the output. The torsional vibration damper is in particular a dual mass flywheel.
The invention further relates to a hybrid drive train having an internal combustion engine and an electric machine.
Background
DE 102014203954 a1 discloses a clutch device, which comprises: an input side and an output side arranged in a rotatable manner about a rotation axis; and at least one first friction pairing and at least one second friction pairing, wherein the first friction pairing is connected with the input side in a torque-locking manner, the second friction pairing is connected with the output side in a torque-locking manner, and the first friction pairing and the second friction pairing can form a friction fit through pressing force for transmitting torque between the input side and the output side; wherein at least one spring element is provided, which is designed to increase the pressing force. In this way, an increased pressing force for pressing the two friction partners is ensured.
A hybrid drive train having an internal combustion engine and an electric machine, which can be connected to one another and to a transmission input shaft via a separating clutch, is known from DE 102012219028 a 1. A planetary gear set is proposed, by means of which an auxiliary unit can be driven via the internal combustion engine or via the electric machine.
Disclosure of Invention
The object of the present invention is therefore to improve the hybrid drive train and the clutch device mentioned structurally and/or functionally. In particular, a clutch device is to be provided which can connect or disconnect an internal combustion engine to or from a drive train. A flexible arrangement of the individual components of the drive train is to be achieved.
This object is achieved by the following separating clutch. It is to be noted that the features mentioned here can be combined with one another in a technically meaningful manner and define further embodiments of the invention. In addition to this, further preferred embodiments of the invention are precisely expressed and illustrated in the description.
A separating clutch for coupling and decoupling a first drive unit relative to a driven unit is proposed, wherein the separating clutch comprises at least one torsional vibration damper having at least one input and one output, which have a common axis of rotation and can be rotated in a limited manner relative to one another, and a spring damper arrangement acting between the input and the output. The input element can be connected to the first drive unit in a rotationally fixed manner, wherein the output element can be connected to the transmission reel in a torque-transmitting manner via a clutch device, which can be moved between an open operating position and a closed operating position. The transmission belt pulley can be driven by a second drive unit via a transmission belt, wherein the transmission belt pulley can be connected to the output unit in a rotationally fixed manner, so that the output unit can be driven via the second drive unit and/or via the first drive unit.
The first drive unit is in particular an internal combustion engine. The second drive unit is preferably an electric motor having a stationary stator and a rotor arranged rotatably therein. The torque is transmitted to the transmission belt disk via the motor shaft of the electric machine. For this purpose, a belt (in particular a chain or the like) is used which runs around the engine shaft and the drive pulley. In particular, the motor shaft of the electric machine is arranged parallel to the rotational axes of the input and output of the torsional vibration damper, but at a distance in the radial direction.
In particular, the rotational axis of the drive shaft of the first drive unit, the rotational axis of the torsional vibration damper, the rotational axis of the clutch device, the rotational axis of the transmission disk and the rotational axis of the transmission input shaft are arranged coaxially with one another.
The torsional vibration damper can be used in particular for damping torsional vibrations excited by a periodic process. The torsional vibration damper can be used to damp torsional vibrations excited by the internal combustion engine. The terms "input" and "output" can refer to the direction of power flow from the internal combustion engine. Torsional vibration dampers with spring damper arrangements are known in the prior art (e.g. dual mass flywheels ZMS with a primary side (input side) and a secondary side (output side)).
In particular, the drive pulley is rotatably mounted on the input part in the radial direction within the input part.
Preferably, the input element can be fixed in a rotationally fixed manner via screws on the first drive shaft of the first drive unit.
In particular, the input element is connected to the first drive shaft (e.g., a crankshaft of the internal combustion engine) via a screw in a rotationally fixed manner. In particular, the output element is rotatably mounted on the input element via bearings (plain bearings, rolling bearings, etc.).
In particular, the transmission belt reel surrounds the torsional vibration damper in the radial direction, wherein the transmission belt reel can be driven by the transmission belt in the radial direction outside the torsional vibration damper and the clutch device. In particular, the drive pulley is rotatably mounted on the input part via bearings (plain bearings, rolling bearings, etc.).
The transmission belt pulley is preferably connected in a torque-proof and torque-transmitting manner, for example, via a so-called flexplate (a connecting element which is flexible at least in the axial direction for transmitting torque between two shafts arranged coaxially to one another) and/or directly via a toothing to a driven element (for example, a transmission input shaft).
It is proposed that a clutch device is arranged between the transmission reel and the output element, via which clutch device the first drive unit can be coupled to the output element. This arrangement enables: when the internal combustion engine is at a standstill, the motor vehicle can be electrically driven via the drive pulley (only via the second drive unit), and when the electric machine is operated for generating electricity, the internal combustion engine does not have to be coupled (mitgeschleppt). If the torque of the electric machine is no longer sufficient, the internal combustion engine can be started conventionally via a starter or by means of the electric machine and the separating clutch. In the case of a normal start, the rotational speed of the internal combustion engine is adapted to the rotational speed of the output after the start (step-by-step synchronization), and the clutch device is then closed. In the case of a start via the second drive unit (the electric machine), the clutch device is closed and the internal combustion engine is pulled via the electric machine.
In particular, the clutch device is embodied as "normally closed", i.e. closed in the initial state. In particular, the pressing force of the friction partners is applied via an actuating element in the form of a disk spring. In particular, the clutch device is a multiplate clutch having an inner housing and an outer housing, wherein the outer housing is fixed in a rotationally fixed manner on the transmission belt disk.
Preferably, the inner housing comprises a plurality of bolts which extend through the output part in an axial direction parallel to the axis of rotation, wherein a stop for an actuating element is arranged at a first end of the bolts, wherein a pressure plate is arranged at a second end of the bolts, wherein a friction partner (e.g. a friction plate set) of the clutch device is arranged between the output part and the pressure plate; wherein the pressure plate together with the bolt can be moved in a first axial direction by the actuating element.
In particular, the pin bolts are arranged uniformly distributed in the circumferential direction. Each pin extends along the axial direction between a first end and a second end. A pressure plate, in particular annular, is arranged at the second end, via which pressure plate friction plates, for example on the outer and inner shells, can be connected to each other in a friction-locking manner in the axial direction. The actuating element is arranged in particular at the first end such that, in the initial state of the clutch device, the bolt and thus the pressure plate are pressed against the output element.
In particular, the bolt can be moved in the second axial direction by the actuating device via the second end against an actuating force of the actuating element. Such actuating devices can be actuated hydraulically, pneumatically and/or electromechanically. The actuating device comprises in particular a preferably annular separating plate, via which a plurality of bolts can be moved in the second axial direction relative to the output part against an actuating force of the actuating element. The pressure plate is thus removed from the output part and the friction pair (for example the friction plate pack) is ventilated.
In particular, at least one leaf spring is arranged between the output element and the pressure plate, which leaf spring extends in the circumferential direction and, due to a mounting angle relative to the circumferential direction, extends in the axial direction, said leaf spring transmitting a torque from the output element to the pressure plate.
In particular, the at least one leaf spring is arranged such that it is pulled by a circumferential force acting in the circumferential direction during a traction operation of the first drive unit. The leaf spring is tensioned, which results in an additional clamping force, which acts here in the first axial direction, by which the pressure plate is pulled toward the output element. As a result, the friction plate sets of, for example, the outer and inner housing are pressed against one another more strongly, so that the torque capacity of the clutch device is increased.
In traction operation (i.e. the first drive unit transmits a drive torque to the transmission reel), the clutch device must be able to transmit the drive torque with a certain degree of safety, only the internal combustion engine drag torque (engine brake) being transmitted in freewheeling operation. For this purpose, the at least one leaf spring is provided here, which increases the pressing force of the clutch device during traction operation. The increased pressing force is supported between the pressure plate and the drive belt reel within the disconnect clutch. In the case of an inertia slip operation, the torque that can be transmitted is correspondingly reduced slightly.
In particular, a plurality of leaf springs are arranged in a leaf spring pack. Preferably, a plurality of (preferably three) leaf springs/leaf spring sets are evenly distributed along the circumferential direction.
Furthermore, a hybrid drive train for a motor vehicle is proposed, which has an internal combustion engine as a first drive unit and an electric machine as a second drive unit, as well as a transmission and a disconnect clutch according to the invention, wherein a transmission pulley of the disconnect clutch is connected in a torque-transmitting manner to the second drive unit via a drive belt, wherein the transmission pulley is connected in a rotationally fixed manner to the transmission or to a transmission input shaft (in this case the output unit).
In particular, the transmission reel has a transmission side and a drive side facing the first drive unit, wherein the torsional vibration damper and the clutch device are arranged on the drive side.
In particular, the transmission belt disk extends from the bearing arrangement on the radially inwardly facing flange of the input element in the radial direction outwardly in the radial direction over the clutch device and the torsional vibration damper to a guide for the transmission belt. The transmission belt disk is arranged in the axial direction between the clutch device or the output element and the transmission.
The same applies to the separating clutch for the embodiment of the hybrid drive train and vice versa.
Drawings
The invention and the technical environment are explained in detail below with reference to the drawings. It is to be noted that the figures show a particularly preferred embodiment variant of the invention, without being restricted thereto. Here, the same reference numerals are used for the same members in the drawings. Schematically showing:
FIG. 1: motor vehicle with a separating clutch, wherein only a partial section of the separating clutch is shown in a side view; FIG. 2: the behavior of the leaf spring of the disconnect clutch during traction operation; and FIG. 3: the behavior of the leaf spring of the disconnect clutch during inertia slip operation.
Detailed Description
Fig. 1 shows a motor vehicle 35 having a separating clutch 1, wherein only a partial section of the separating clutch 1 is shown in a side view. The separator clutch 1 serves for coupling and decoupling the first drive unit 2 relative to the slave unit 3, wherein the separator clutch 1 comprises a torsional vibration damper 4 having at least one input 5 and one output 6. The input part 5 and the output part 6 can be rotated in a limited manner relative to one another by means of a spring damper arrangement 8, wherein the output part 6 is rotatably mounted on the input part 5. The input element 5 is connected in a rotationally fixed manner via a first drive shaft 15 to the first drive unit 2 via a screw 14, wherein the output element 6 is connected in a torque-transmitting manner to the transmission reel 10 via a clutch device 9, which can be moved between an open operating position and a closed operating position. The transmission reel 10 is driven by a second drive unit 12 via a transmission belt 11. The transmission reel 10 can be connected to the output unit 3 in a rotationally fixed manner, so that the output unit 3 can be driven via the second drive unit 12 and/or via the first drive unit 2.
A hybrid drive train 34 for a motor vehicle 35 is described, which has an internal combustion engine 36 as a first drive unit 2, an electric machine 37 as a second drive unit 12, and a transmission 38 as a driven unit 3. The transmission reel 10 of the separating clutch 1 is connected in torque-transmitting fashion via a transmission belt 11 to a motor shaft of the second drive unit 12, which is arranged axially parallel to the axis of rotation 7 of the separating clutch 1, wherein the transmission reel 10 is connected in a rotationally fixed manner to the transmission 38 or to the transmission input shaft 39.
The transmission reel 10 has a transmission side 40 and a drive side 41 pointing toward the first drive unit 2, wherein the torsional vibration damper 4 and the clutch device 9 are arranged on the drive side 41.
The transmission belt disk 10 extends from the bearing arrangement 46 on the flange 49 of the input element 5 facing inward in the radial direction 13, outward beyond the clutch device 9 and the torsional vibration damper 4 to the guide 42 for the drive belt 11. The transmission reel 10 is arranged in the axial direction 20 between the clutch device 9 or the output element 6 and the transmission 3.
The clutch device 9 is embodied as "normally closed", i.e. closed in the initial state. The pressing force of the friction pairing is applied via an actuating element 23 embodied as a disk spring. The clutch device 9 is here a multiplate clutch 16 having an inner housing 17 and an outer housing 18, the outer housing 18 being secured in a rotationally fixed manner on the transmission reel 10.
The inner housing 17 comprises a plurality of bolts 19 which extend through the output part 6 in an axial direction 20 parallel to the axis of rotation 7, wherein a stop 22 for an actuating element 23 is arranged at a first end 21 of the bolts 19, wherein a pressure plate 25 is arranged at a second end 24 of the bolts 19. A friction plate group 26 of the clutch device 9 is arranged between the output element 6 and the pressure plate 25; the pressure plate 25 together with the bolt 19 can be moved in a first axial direction 27 by the actuating element 23.
The bolt 19 can be displaced in a second axial direction 30 via the second end 21 against an actuating force 28 of the actuating element 23 by means of an actuating device 29. Such actuating devices 29 can be actuated hydraulically, pneumatically and/or electromechanically. The actuating device 29 comprises a separating plate 47, via which the plurality of bolts 19 can be moved in the second axial direction 30 relative to the output part 6 against the actuating force 28 of the actuating element 23. The pressure plate 25 is thus removed from the output part 6 and the friction plate pack 26 is ventilated.
Furthermore, a leaf spring 32 (a leaf spring group with three leaf springs 32 is shown here) is arranged between the output element 6 and the pressure plate 25, which leaf spring extends in the circumferential direction 31 and, owing to a mounting angle 43 (see fig. 2 and 3) relative to the circumferential direction 31, extends in the axial direction 20, and which transmits a torque from the output element 6 to the pressure plate 25 (and vice versa).
Fig. 2 shows the behavior of the leaf spring 32 of the disconnect clutch 1 during a traction mode 33. The leaf spring 32 is arranged between the output 6 and the pressure plate 25 at a mounting angle 43 relative to the circumferential direction 31 and extends in the circumferential direction 31 and along the axial direction 20. During the traction operation 33 of the first drive unit 2, the leaf spring 32 is loaded in tension by a circumferential force 44 acting in the circumferential direction 31. The loading of the leaf spring 32 in tension causes the mounting angle 43 to decrease and an additional clamping force 45, which acts here in the first axial direction 27, is generated, by means of which the pressure plate 25 is pulled toward the output element 6. As a result, the friction plate packs 26 of the outer housing 18 and the inner housing 17 are pressed more strongly against one another, so that the torque capacity of the clutch device 9 is increased.
Fig. 3 shows the behavior of the leaf spring 32 of the disconnect clutch 1 during the inertia slip operation 48. In the case of the freewheeling operation 48, only the internal combustion engine drag torque (engine braking) has to be transmitted. Here, the circumferential force 44 likewise acts on the leaf spring 32, thereby increasing the mounting angle 43. The clamping force acting on the friction plate pack 26 is therefore reduced by the additional (but now reversed, i.e. directed in the second axial direction 30) clamping force 45.
List of reference numerals
1 Release Clutch
2 first drive unit
3 driven unit
4 torsional vibration damper
5 input member
6 output member
7 axis of rotation
8 spring shock absorber device
9 Clutch device
10 drive reel
11 drive belt
12 second drive unit
13 radial direction
14 screw
15 first drive shaft
16 multi-plate clutch
17 inner shell
18 outer cover
19 pin bolt
20 axial direction
21 first end part
22 stop
23 actuating element
24 second end portion
25 pressing plate
26 friction plate group
27 first axial direction
28 operating force
29 operating device
30 second axial direction
31 circumferential direction of
32 leaf spring
33 traction operation
34 hybrid drive train
35 Motor vehicle
36 internal combustion engine
37 electric machine
38 speed variator
39 variator input shaft
40 transmission side
41 driver side
42 guide part
43 mounting angle
44 circumferential force
45 clamping force
46 bearing structure
47 separating disk
48 inertia slip operation
49 Flange

Claims (9)

1. A disconnect clutch (1) for coupling and decoupling a first drive unit (2) with respect to a driven unit (3), wherein the disconnect clutch (1) comprises: at least one torsional vibration damper (4) having at least one input (5) and one output (6) which have a common axis of rotation (7) and can be rotated in a limited manner relative to one another; and a spring damper device (8) acting between the input (5) and the output (6); wherein the input element (5) is connected to the first drive unit (2) in a torque-proof manner, wherein the output element (6) is connected to a transmission belt reel (10) in a torque-transmitting manner via a clutch device (9), which can be moved between an open operating position and a closed operating position, wherein the transmission belt reel (10) can be driven by a second drive unit (12) via a transmission belt (11); wherein the transmission belt disk (10) is connected to the output unit (3) in a rotationally fixed manner such that the output unit (3) can be driven via the second drive unit (12) and/or via the first drive unit (2), wherein the transmission belt disk (10) is rotatably supported on the input (5) within the input (5) in a radial direction (13).
2. The disconnect clutch (1) according to claim 1, wherein the input member (5) is torsionally fixable on a first drive shaft (15) of the first drive unit (2) via a plurality of screws (14).
3. The separating clutch (1) according to claim 1 or 2, wherein the clutch device (9) is a multiplate clutch (16) having an inner housing (17) and an outer housing (18), wherein the outer housing (18) is fixed in a rotationally fixed manner on the transmission reel (10).
4. Disconnect clutch (1) according to claim 3, wherein the inner housing (17) comprises a plurality of pin bolts (19) which extend through the output (6) in a first axial direction (20) parallel to the axis of rotation (7), wherein a stop (22) for an actuating element (23) is arranged on a first end (21) of the pin bolts (19), wherein a pressure plate (25) is arranged on a second end (24) of the pin bolts (19), wherein a friction pair of the clutch device (9) is arranged between the output (6) and the pressure plate (25); wherein the pressure plate (25) together with the bolt (19) can be moved in a first axial direction (20) by the actuating element (23).
5. The disconnect clutch (1) according to claim 4, wherein the pin (19) is movable in a second axial direction (30) via the first end (21) against an operating force (28) of the operating element (23) by an operating device (29).
6. Disconnect clutch (1) according to any one of the preceding claims 4 or 5, wherein at least one leaf spring (32) is arranged between the output (6) and the pressure plate (25), which leaf spring extends in a circumferential direction (31) and along the first axial direction (20) due to a mounting angle (43) relative to the circumferential direction (31), which leaf spring transmits a torque from the output (6) to the pressure plate (25).
7. Disconnect clutch (1) according to claim 6, wherein the at least one leaf spring (32) is arranged such that the at least one leaf spring (32) is pulled upon traction operation (33) of the first drive unit (2).
8. Hybrid drive train (34) for a motor vehicle (35), having an internal combustion engine (36) as a first drive unit (2) and an electric machine (37) as a second drive unit (12) and having a transmission (38) and a disconnect clutch (1) according to one of the preceding claims, wherein a transmission reel (10) of the disconnect clutch (1) is connected in a torque-transmitting manner to the second drive unit (12) via a drive belt (11), wherein the transmission reel (10) is connected in a rotationally fixed manner to a transmission input shaft (39) of the transmission (38).
9. Hybrid drive train (34) according to claim 8, wherein the power transmission reel (10) has a transmission side (40) and a driver side (41) facing the first drive unit (2), wherein the torsional vibration damper (4) and the clutch device (9) are arranged on the driver side (41).
CN201680070032.6A 2015-12-16 2016-11-29 Separating clutch for a motor vehicle Active CN108290490B (en)

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DE102015225422.4A DE102015225422A1 (en) 2015-12-16 2015-12-16 Disconnect coupling for a motor vehicle
PCT/DE2016/200557 WO2017101930A1 (en) 2015-12-16 2016-11-29 Disconnect clutch for a motor vehicle

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DE112016005760A5 (en) 2018-08-23

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