CN111795114B - Flywheel assembly and drive train - Google Patents
Flywheel assembly and drive train Download PDFInfo
- Publication number
- CN111795114B CN111795114B CN202010065167.1A CN202010065167A CN111795114B CN 111795114 B CN111795114 B CN 111795114B CN 202010065167 A CN202010065167 A CN 202010065167A CN 111795114 B CN111795114 B CN 111795114B
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- Prior art keywords
- damper
- flywheel assembly
- friction
- support
- friction element
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 description 10
- 239000006096 absorbing agent Substances 0.000 description 5
- 230000013011 mating Effects 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/131—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses
- F16F15/133—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses using springs as elastic members, e.g. metallic springs
- F16F15/134—Wound springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
- F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
- F16F15/145—Masses mounted with play with respect to driving means thus enabling free movement over a limited range
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/129—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by friction-damping means
- F16F15/1297—Overload protection, i.e. means for limiting torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/131—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses
- F16F15/139—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses characterised by friction-damping means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
- F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
- F16D7/024—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces
- F16D7/025—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces with flat clutching surfaces, e.g. discs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
- F16F15/123—Wound springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/0052—Physically guiding or influencing
- F16F2230/007—Physically guiding or influencing with, or used as an end stop or buffer; Limiting excessive axial separation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention relates to a flywheel assembly and a drive train, in particular for a drive train, for example a hybrid drive train, comprising a flange part (102), a centrifugal pendulum (104) arranged on the flange part (102) and a damper (108), the damper (108) comprising a damper input part, a damper output part and a spring damper arrangement (128) acting between the damper input part and the damper output part, the damper input part and the damper output part being rotatable together about a common rotational axis (121) and being rotatable to a limited extent relative to each other, wherein the flywheel assembly (100) comprises a torque limiter (106). The drive train, in particular a hybrid drive train, has an electric drive and a drive operated by an internal combustion engine, wherein the drive train has such a torsional vibration damper.
Description
Technical Field
The invention relates to a flywheel assembly, in particular for a drive train, such as a hybrid drive train, comprising a flange part, a centrifugal pendulum arranged on the flange part, and a damper, which comprises a damper input part, a damper output part, and a spring damper arrangement acting between the damper input part and the damper output part, which can be rotated together about a common rotational axis and can be rotated in a limited manner relative to one another. The invention also relates to a drive train, in particular a hybrid drive train, having an electric drive train and a drive train operated by an internal combustion engine.
Background
A flywheel assembly is known from DE 10 2016 223 362 A1, which has a disk accommodated on a crankshaft of an internal combustion engine and a ring connected to the disk, and a centrifugal pendulum having a pendulum mass carrier and a pendulum mass which is distributed over the pendulum mass carrier in the circumferential direction and is accommodated in a pivotable manner relative to the pendulum mass carrier in a centrifugal force field of the rotating flywheel assembly, wherein the pendulum mass carrier is arranged axially between the disk and the ring and is fixedly connected to the disk and the ring radially outside the pendulum mass.
A dual-mass flywheel is known from DE 10 2016 223 413 A1, which has a primary side and a secondary side, which can be rotated relative to one another against the action of at least one energy store, wherein a friction device is arranged between the primary side and the secondary side, wherein the friction device is arranged radially outside a connection for connecting a damper flange of the secondary side to a secondary mass.
In particular in hybrid vehicles, rattle noise occurs during the increase and decrease of the torque of the internal combustion engine when the battery is charged. The rattle noise is generated by a combination of elementary hysterons and spring characteristics.
Disclosure of Invention
The object of the present invention is to improve a flywheel assembly of the type mentioned at the outset in terms of its structure and/or function. The object of the invention is also to improve a drive train of the type mentioned at the outset in terms of structure and/or function.
This technical problem is solved by a flywheel assembly having the features according to the present invention. The technical problem is also solved by a drive train having the features according to the invention.
The flywheel assembly may be used for arrangement in a motor vehicle drive train, in particular in a hybrid drive train. The vehicle may be a hybrid vehicle. The flywheel assembly may be implemented as a single mass flywheel and/or as a rigid flywheel. The flywheel assembly may be adapted to be disposed between the travel drive and the friction clutch. The driving drive may be an electric driving drive and/or an internal combustion engine-operated driving drive. The flywheel assembly may be adapted to be disposed on a crankshaft. The flywheel assembly may be adapted to be disposed on a friction clutch. The flywheel assembly may be adapted to be disposed on a hydraulic torque converter. The flywheel assembly may be adapted to be disposed on a transmission. The flywheel assembly may be adapted for disposition on an auxiliary drive assembly.
The designations "input element" and "output element" relate in particular to the direction of the power flow from the drive. The terms "axial", "radial" and "circumferential" relate to the direction of extension of the rotational axis of the flywheel assembly, if not indicated to the contrary or not taken from the context. The "axial direction" corresponds here to the direction of extension of the rotation axis. The "radial direction" is in this case the direction perpendicular to the extension of the rotation axis and intersecting the rotation axis. The "circumferential direction" corresponds here to the direction of the circular arc about the axis of rotation.
The flywheel assembly may be accommodated on a crankshaft of the internal combustion engine, for example in a screw connection with the crankshaft. The flywheel assembly may have a flange member. For example, a flange part of the flywheel assembly made of sheet material has a corresponding opening. For a secure connection, a reinforcing ring can be attached to the flange part and/or screwed together with the flange part to the crankshaft. The flange member may have a shell-like shape including a bottom section and an edge section. The bottom section may extend at least substantially in a radial direction. The edge section may extend at least substantially in the axial direction. The flange part may have a toothed ring, a toothed ring or a driving ring. The toothed ring, the toothed ring or the active ring can be arranged radially on the outside on the flange part.
The flywheel assembly may have at least one centrifugal force pendulum device. The flywheel assembly may have at least one centrifugal pendulum device arranged on the flange part. The centrifugal force pendulum device can have a pendulum mass carrier and at least one pendulum mass which is arranged movably on the pendulum mass carrier. The flange part and the pendulum mass carrier can be fixedly connected to one another, in particular riveted or screwed. The pendulum mass which is distributed in the circumferential direction and is accommodated in the centrifugal force field of the rotatable flywheel assembly in a swingable manner relative to the pendulum mass carrier can be arranged on the pendulum mass carrier. The pendulum mass can be suspended on the pendulum mass carrier in a pivotable manner by means of a pivot bearing which is spaced apart in the circumferential direction. The pendulum mass can be formed from one or more, for example two, axially superposed pendulum mass parts. The pendulum mass can be arranged on both sides of the pendulum mass support. The axially opposite pendulum masses can be connected to form a pendulum mass unit by means of a connection, for example a spacing rivet or the like, which engages through the pendulum mass carrier.
The flywheel assembly may have a damper. The damper may have a damper input member and a damper output member. The damper input member and the damper output member are rotatable together about a common axis of rotation and are limitedly rotatable relative to one another. The damper may have a shell member and a cover member. The shell member and/or the cover member may have a shell-like and/or ring-like shape. The shell part and the cover part can be connected to each other, in particular riveted or screwed. The shell member and the cover member may form a damper input member. The damper output member may have a sleeve section and/or a flange section. For example, the sleeve section can be produced in one piece or in one piece with the damper output element. Alternatively, the sleeve section and the damper output element can first be produced separately from one another and then fixedly connected to one another, in particular riveted or screwed. The sleeve section may have a socket tooth. The socket tooth may be an internal tooth. The mating teeth may be adapted to connect with a shaft. The sleeve section can be used for connection to a shaft, in particular a transmission input shaft. The sleeve section can be used for connection to an electric drive.
The damper may have a spring damper arrangement. The spring-damper-device may act between the damper input member and the damper output member. The spring-damper device may have a mechanical energy store. The energy store may be configured as a spring. The spring may be embodied as a cylindrical helical compression spring having a rectilinear helical axis. The spring may be implemented as a compression spring. The spring-damper-device may have one, two, three, four or more springs. The damper input member and/or the damper output member may have a recess for a spring. The mechanical accumulator may absorb energy when the torsional vibration force exceeds the force of the spring and the damper input member and damper output member rotate relative to one another such that the spring compresses. When the torsional vibration force is lower than the force of the spring, the at least one mechanical energy store can output energy, so that the damper input element and the damper output element are rotated back again relative to one another.
The damper may be provided with an additional hysteresis element. For example, the damper may have a damper friction device. The damper friction device may have at least one friction ring or friction disc. The damper friction device may have a cup spring diaphragm and/or a compression spring.
The flywheel assembly may have a torque limiter. The torque limiter may act between the flange member and the damper input member. The torque limiter can be used to protect the flywheel assembly, in particular the energy store of the spring damper arrangement, from excessive torque. Excessive torque is torque that causes damage to the flywheel assembly. Excessive torque may occur, for example, when the spring is locked and may also be referred to as impact torque. The torque limiter may be used to limit the torque that may be transferred via the flywheel assembly to torque that may be transferred with operational reliability. The torque that can be transferred reliably is the torque that can be transferred without risk of damaging the flywheel assembly. The torque limiter may be disposed in a power path between the flange component of the flywheel assembly and the damper.
The flywheel assembly may have a support member. The support member may be configured as a support disk or a support ring. The support part and the flange part can be fixedly connected, in particular riveted or screwed, to each other. The flange member may have a support section. The torque limiter may be arranged between the flange part and the support part. The support member may have two axially opposed support elements. The torque limiter may be arranged between two axially opposite support elements of the support part. The two axially opposite support elements of the support part can be connected to each other, in particular riveted or screwed.
Alternatively or additionally, the damper input member may have a support section. The support section may be configured as a disk or ring. The shell part and/or the cover part of the damper may have a support section. The torque limiter may be arranged between the flange part and the support section. The damper input member may have another support section. The damper input member may have two axially opposed support sections. The torque limiter may be arranged between two axially opposite support sections of the damper input member.
The support member may be used as a transmitter board for a motor control sensor, such as a rotational speed sensor. The support part may have a transmitter part for this purpose. Alternatively, the flywheel assembly may have a transmitter plate. The transmitter plate and the flange part can be fixedly connected, in particular riveted or screwed, to each other. The transmitter board or transmitter part may have at least one recess or at least partially encircling recess, for example a stamping.
The torque limiter may have a limiter input part, in particular on the input side, and a limiter output part, in particular on the output side. The limiter input and the limiter output can be connected to each other in a friction-locking and/or force-locking manner. The torque limiter may have a friction device acting between the limiter input member and the limiter output member.
The friction means may have at least one first friction element. The friction means may have at least one second friction element. The at least one first friction element and/or the at least one second friction element may be used for a friction-locking connection or a force-locking connection of the limiter input part and the limiter output part to each other. The at least one first friction element and/or the at least one second friction element may be embodied as a friction lining. Torque up to a maximum torque can be transmitted by friction means by friction and/or force fit. When a torque greater than the maximum torque is applied to the friction device, the frictional connection between the limiter input member and the limiter output member can be overcome, thereby reducing or interrupting the torque transmission. The at least one first friction element and/or the at least one second friction element may be provided to the damper input member or the flange member. At least one first friction element may be provided to the support member or support section. The at least one second friction element can be fixedly connected, in particular riveted or screwed, to the damper input element or to the flange element. The housing part and the cover part of the damper can be fixedly connected, in particular riveted or screwed, to the at least one second friction element. The at least one second friction element may be arranged on the housing part or on the cover part of the damper or against it. The at least one second friction element can be arranged, for example, axially on the input side on the housing part or axially on the output side on the housing part or against it. The at least one second friction element can be arranged axially between the housing part and the cover part of the damper and/or can be attached to the housing part or the cover part. The at least one second friction element can be fixedly connected, in particular riveted or screwed, to the support part. The at least one second friction element can be arranged, for example, axially on the output side on the flange part or on the support part or against it. The at least one second friction element may be arranged axially between the flange part and the support part and/or against it. The at least one second friction element may serve as a counterpart element to the at least one first friction element. The at least one second friction element may be a mating disc. The at least one first friction element can rest against the at least one second friction element. The at least one first friction element can form a friction-locking and/or force-locking connection and/or form a friction pair with the at least one second friction element. Two first friction elements may be provided. The at least one second friction element may be arranged axially between the two first friction elements. At least one, for example a second, first friction element can be arranged on the flange part, for example on a support section of the damper input part on the input side in the axial direction or on or against a support part of the flywheel assembly. At least one, for example a second, first friction element may be arranged on or against at least one of the support elements of the flywheel assembly, for example on the input side in the axial direction.
The friction means may have at least one spring member. The spring member may have a disc spring-like shape. The spring member may be arranged at least partially between the flange member and the support member or support section. The spring member may be at least partially disposed between the support sections of the damper input member. The spring member may be at least partially disposed between the support elements of the support member of the flywheel assembly. The spring member may be supported on a support member of the flywheel assembly, on a support element of the support member or on a support section of the damper input member and/or may be fixed thereto. The spring means may load the at least one first friction element and the at least one second friction element with respect to each other, for example with a force, for example with a normal force. The at least one first friction element and the at least one second friction element are in this way loaded and/or pressed against each other with a defined normal force, which determines the friction in the circumferential direction. The at least one first friction element may act between the spring member and the at least one second friction element. The at least one first friction element may form a friction pair with the spring member and the at least one second friction element. The friction means may have a support member, such as a support disc. The support member may act and/or be arranged axially between the flange member and the support member, axially between axially spaced apart support elements of the support member, or axially between axially spaced apart support sections of the damper input member. The support member may act and/or be arranged between the at least one first friction element and a support member of the flywheel assembly or a support section of the damper input member. The support member may act and/or be arranged between the at least one first friction element and the spring member. The support element can be used to apply a force to the at least one first friction element in a planar and/or uniform manner by means of the spring element. The support element can be held on the at least one first friction element by a force applied by means of a spring element. The support element can be fixedly connected, in particular riveted or screwed, to the support element and/or to the flange element. The support part can be fixedly connected, in particular riveted or screwed, to the damper input part.
The damper may have a rotation restricting portion. The rotation limiter is configured to connect the damper input element and the damper output element to each other, in particular in a form-fitting manner, starting from a specific angular position. The rotation limiter may be formed by means of a stop, for example an end stop. The stop may be embodied as a protrusion and/or a recess. The housing part and/or the cover part of the shock absorber can have a stop embodied as a projection and/or a stop embodied as a recess. The protrusions may engage axially and/or radially into the recesses. The stop may act in a circumferential direction. The stop can interfere according to the course of the spring characteristic. The blocking moment can be absorbed by the stop. The locking torque can occur, for example, when the spring is locked, for example, due to an ignition interruption, i.e. the spring coils are stacked on top of each other in the direction of the helical axis and in contact.
The drive train may be a hybrid drive train. The drive train may be a drive train of a hybrid vehicle. The drive train may have an electric drive and a drive operated by the internal combustion engine. The electric drive can be operated as an electric motor and/or as a generator. The driving drive for the internal combustion engine can have a crankshaft. The drive train may have at least one embodiment of the flywheel assembly described above.
The drive train may have a friction clutch. The friction clutch may be a single clutch. The friction clutch may be a dual clutch. The drive train may have a hydrodynamic torque converter. The drive train may have a transmission. The transmission may be a shift transmission. The transmission may be a continuously variable transmission. The drive train may have a hybrid transmission, such as a dedicated hybrid transmission. The drive train may have at least one drivable wheel. An electric drive and/or an internal combustion engine-operated drive can be used to drive at least one wheel. The drive train may have an auxiliary drive assembly.
In summary and in other words, the invention thus provides, in particular, a rigid flywheel for a drive train, for example a hybrid drive train, which flywheel has a torque limiter, a centrifugal pendulum and a downstream damper, for example an internal damper. The shock absorber may also be referred to as a predamper. The flywheel may also be referred to as a flywheel assembly. The low-friction and cost-effective damper/predamper according to the clutch disc/predamper principle can be mounted or integrated on the driven hub of the rigid flywheel and/or directly in the driven hub of the damper. The damper can be held on the driven sleeve such that the locking moment can be absorbed via the end stop. The end stop can interfere in accordance with the course of the spring characteristic. The damper on the driven disc hub may be provided with an additional hysteresis element, such as is used in clutch disc dampers. A torque limiter may be mounted on the damper, which may reduce over-torque when required. The torque limiter may be mounted between the rigid flywheel and the support member. The support member may be used as a transmitter board for the motor control sensor. The support members may be mounted by riveting or screwing. This enables removability and replaceability of the torque limiter after operation or damage. A rigid flywheel may be secured to the crankshaft. A rigid flywheel may carry a centrifugal pendulum.
The invention prevents or at least reduces rattle noise, in particular during the increase and decrease of the torque of an internal combustion engine. A high degree of isolation is ensured. The reliability of torque limitation is improved. The transmissible torque can be limited to the torque that can be transmitted in an operationally reliable manner. Damage to the flywheel assembly or the spring-damper arrangement due to over-torque is reliably prevented. Impact moment is avoided.
Drawings
Embodiments of the present invention are described in detail below with reference to the attached drawing figures, which are schematically and exemplarily illustrated herein:
figure 1 shows a flywheel assembly with a torque limiter according to a first embodiment,
Figure 2 shows a flywheel assembly with a torque limiter according to a second embodiment,
Fig. 3 shows a flywheel assembly with a torque limiter according to a third embodiment.
Detailed Description
Fig. 1 shows a flywheel assembly 100 according to a first embodiment implemented as a flywheel. The flywheel assembly 100 has a flange member 102, a centrifugal pendulum 104 disposed on the flange member 102, a torque limiter 106, and a damper 108. The flange member is made of a plate material. To stabilize the connection of the crankshaft, a reinforcing ring 110 is mounted on the flange part 102 and screwed thereto. The flange member 102 has a shell-like shape including a bottom section and an edge section. The bottom section extends at least substantially in a radial direction. The edge section extends at least substantially in the axial direction. The flange member 102 has a drive ring or gear ring 112. The drive ring or gear ring 112 is arranged radially on the outside on the flange part 102, on this edge section.
Centrifugal pendulum 104 has a pendulum mass carrier 114 and a pendulum mass 116 which is movably arranged on pendulum mass carrier 114. The flange member 102 and the pendulum mass carrier 114 are fixedly riveted to each other. The pendulum mass 116 is swingably accommodated in the centrifugal force field of the rotating flywheel assembly 100 relative to the pendulum mass carrier 114. A plurality of pendulum weights 116 may be provided, which may be distributed in the circumferential direction on the pendulum weight carrier 114. The pendulum mass 116 is suspended swingably on the pendulum mass carrier 114 by means of circumferentially spaced pendulum supports. The pendulum mass 116 is composed of two axially stacked pendulum mass parts. The pendulum mass parts are arranged on both sides of the pendulum mass carrier 114. The axially opposed pendulum mass parts are connected to form a pendulum mass unit by means of a connection, such as a spacing rivet or the like, which engages through the pendulum mass carrier 114.
Damper 108 has a damper input member 118 and a damper output member 120. The damper input member 118 and the damper output member 120 are rotatable together about a common rotational axis 121 and are limitedly rotatable relative to one another. The damper has a shell member 122 and a cover member 124. The shell member 122 and the cover member 124 are riveted to each other on the damper input member 118. The damper output member 120 has a sleeve section 126. The sleeve section 126 is made in one piece or in one piece with the damper output member 120. The sleeve section may have a socket tooth for connection to the shaft.
Shock absorber 108 has a spring-shock absorber-device 128. Spring-damper-device 128 acts between damper input member 118 and damper output member 120. The spring-damper arrangement 128 has a mechanical energy store configured as a spring. The spring is embodied as a cylindrical helical compression spring with a rectilinear helical axis. The damper input member 118 and damper output member 120 have notches for springs. The damper 108 has a rotation limiting portion including an end stop. The rotation limiter, starting from a specific angular position, connects the damper input element 118 and the damper output element 120 to one another in a form-fitting manner. The shell part 122 and the cover part 124 of the damper 108 have stops embodied as projections and stops embodied as recesses. The protrusions may engage axially and/or radially into the recesses. The stop acts in the circumferential direction.
The torque limiter 106 acts between the flange member 102 and the damper input member 118. The flywheel assembly 100 has a support member 130 configured to support a disc. The support member 130 and the flange member 102 are fixedly riveted or screwed to each other. The flange member 102 has a support section 132. The support member 130 and the support section 132 of the flange member 102 are arranged axially opposite. The torque limiter 106 is disposed between the support section 132 of the flange member 102 and the support member 130. The support member 130 is configured as a transmitter board for the motor control sensor. For this purpose, the support part 130 has a radially outer transmitter part 134 which comprises at least one recess.
The torque limiter 106 has an input-side limiter input member and an output-side limiter output member. The limiter input and the limiter output are connected to each other in a friction-locking or force-locking manner. The torque limiter 106 has a friction device 136 that acts between the limiter input member and the limiter output member.
The friction device 136 has two first friction elements 138 and a second friction element 140. The friction elements 138, 140 serve for a friction-locking connection or force-locking connection of the limiter input part and the limiter output part to each other. The two first friction elements 138 are embodied as friction linings. The second friction element 140 is embodied as a mating disc. A second friction element 140 is provided to the damper input member 118 and is fixedly riveted thereto. The second friction element 140 is arranged axially on the input side on the housing part 122 of the damper 108 and bears against it. The second friction element 140 is fixedly staked to the shell member 122 and the cover member 124 of the damper 108. One of the first friction elements 138 (left in fig. 1) is assigned to the support section 132 of the flange part 102 and is fixed thereto. Wherein a further first friction element 138 (right in fig. 1) is provided to the support part 130. The second friction element 140 is arranged axially between the two first friction elements 138 and forms a friction-locking/force-locking connection and friction pair with them.
The friction device 136 has a spring member 142 including a disc spring shape. The spring member 142 is disposed between the flange member 102 and the support member 130 and is supported on the support member 130. The spring member 142 biases the first friction element 138 and the second friction element 140 against each other with a normal force. The first friction element 138 and the second friction element 140 are pressed against one another in this way with a defined normal force, which determines the friction in the circumferential direction. A support member 144 in the form of a support disc is arranged operatively between the first friction element 138 and the spring member 142 in the axial direction. The support element 144 serves to apply a force to the first friction element 138 in a planar and uniform manner by means of the spring element 142. The support member 144 is held on the first friction element 138 by the force loaded by the spring member 142.
Fig. 2 shows a flywheel assembly 200 according to a second embodiment implemented as a flywheel. The flywheel assembly 200 has a damper input member 202 that includes two support sections 204. The support section 204 is configured as a disk and is arranged on a housing part or a cover part of the damper. The support sections 204 are arranged axially opposite. Two axially opposite support sections 204 are riveted to each other on the damper input member.
The torque limiter 206 is operatively arranged between two axially opposite support sections 204. The torque limiter 206 has two first friction elements 208, wherein one of the first friction elements 208 (left in fig. 2) is assigned to the support section 204 of the damper input element 202. The torque limiter 206 has a second friction element 210 configured as a mating disc. The second friction element 210 is provided to a flange part of the flywheel assembly 200. The second friction element 210 is arranged axially on the output side on the support part and bears against it. The second friction element 210 is fixedly riveted or screwed to the flange part and the support part. The second friction element 210 is arranged axially between the two first friction elements 208 and forms a friction-locking/force-locking connection and a friction pair with them. The torque limiter 206 has a spring member 212 that is disposed between the two support sections 204 of the damper input member 202 and is supported on the support sections 204 (right side in fig. 2). The spring member 212 biases the first friction element 208 and the second friction element 210 against each other with a normal force. In this way, the first friction element 208 and the second friction element 210 are pressed against one another with a defined normal force, which determines the friction in the circumferential direction. A support member 214 in the form of a support disc is arranged operatively between the first friction element 208 and the spring member 212 in the axial direction. The support member 214 serves to apply a force to the first friction element 208 in a planar and uniform manner by means of the spring member 212. The support member 214 is fixedly riveted to the damper input member of the damper. Reference is additionally made in particular to fig. 1 and the associated description.
Fig. 3 shows a flywheel assembly 300 implemented as a flywheel according to a third embodiment. The flywheel assembly 300 has a support member 302. The support member 302 is fixedly connected, e.g. riveted or screwed, to the flange member. The support member 302 has two axially opposed support elements 304. Two axially opposite support elements 304 are riveted or screwed to each other on the support part 302. The support element 304 is configured as a disk.
A torque limiter 306 is operatively arranged between two axially opposite support sections 304 of the support member 302. The torque limiter 306 has two first friction elements 308, wherein one of the first friction elements 308 (left in fig. 3) is assigned to the support element 304 of the support part 302. The torque limiter 306 has a second friction element 310 configured as a mating disc. A second friction element 310 is provided to the damper input member and is fixedly riveted thereto. The second friction element 310 is arranged axially between the housing part and the cover part of the damper and bears against them. The housing and cover members of the damper are fixedly riveted to the second friction element 310. The second friction element 310 is arranged axially between the two first friction elements 308 and forms a friction-locking/force-locking connection and a friction pair with them. The torque limiter 306 has a spring member 312 which is arranged between the two support elements 304 of the support member 302 and is supported on the support elements 304 (right in fig. 3). The spring member 312 biases the first friction element 308 and the second friction element 310 against each other with a normal force. The first friction element 308 and the second friction element 310 are pressed against one another in this way with a defined normal force, which determines the friction in the circumferential direction. A support member 314 in the form of a support disc is arranged operatively between the first friction element 308 and the spring member 312 in the axial direction. The support element 314 serves to apply a force to the first friction element 308 in a planar and uniform manner by means of the spring element 312. The support member 314 is fixedly riveted or screwed to the support member 302. Reference is additionally made in particular to fig. 1 and the associated description.
Optional features of the invention are particularly denoted by "may". Thus, there are also modifications and/or embodiments of the invention additionally or alternatively having a corresponding feature or features.
Isolated features may be selected from the above-disclosed combinations of features if desired and combined with other features in order to define the claimed subject matter, with possible structural and/or functional relationships between the features being resolved.
List of reference numerals
100. Flywheel assembly
102. Flange part
104. Centrifugal pendulum
106. Torque limiter
108. Vibration damper
110. Reinforcing ring
112. Driving or toothed rings
114. Pendulum mass support
116. Pendulum mass part
118. Shock absorber input unit
120. Output part of vibration damper
121. Axis of rotation
122. Shell component
124. Cover member
126. Sleeve section
128. Spring-damper device
130. Support member
132. Support section of flange part
134. Transmitter unit
136. Friction device
138. First friction element
140. Second friction element
142. Spring component
144. Support member
200. Flywheel assembly
202. Shock absorber input unit
204. Support section of a damper input member
206. Torque limiter
208. First friction element
210. Second friction element
212. Spring component
214. Support member
300. Flywheel assembly
302. Support member
304. Support element
306. Torque limiter
308. First friction element
310. Second friction element
312. Spring component
314. Support member
Claims (10)
1. Flywheel assembly (100, 200, 300) for a hybrid drive train, having a flange part (102), a centrifugal pendulum device (104) and a damper (108) arranged on the flange part (102), and a drive ring or ring gear (112) arranged radially outside the flange part (102), the damper (108) comprising a damper input part, a damper output part and a spring-damper device (128) acting between the damper input part and the damper output part, the damper input part and the damper output part being rotatable together about a common rotation axis (121) and being limitedly rotatable with respect to each other, characterized in that the flywheel assembly (100, 200, 300) has a torque limiter (106, 206, 306).
2. The flywheel assembly (100, 200, 300) according to claim 1, characterized in that the torque limiter (106, 206, 306) acts between the flange part (102) and the damper input part.
3. The flywheel assembly (100, 200, 300) according to claim 1, characterized in that the flywheel assembly (100, 200, 300) has a support member (130, 302), and that the support member (130, 302) and the flange member (102) are fixedly connected or screwed to each other, and that the torque limiter is arranged between the flange member (102) and the support member (130, 302).
4. The flywheel assembly (100, 200, 300) according to claim 1, characterized in that the damper input member has a support section (204) and the torque limiter is arranged between the flange member (102) and the support section (204).
5. The flywheel assembly (100, 200, 300) according to any of claims 1-4, characterized in that the torque limiter has a limiter input part, a limiter output part and a friction device (136) acting between the limiter input part and the limiter output part.
6. The flywheel assembly (100, 200, 300) according to claim 5, characterized in that the friction device (136) has at least one first friction element (138, 208, 308), at least one second friction element (140, 210, 310) and at least one spring member (142, 212, 312).
7. The flywheel assembly (100, 200, 300) according to claim 6, characterized in that the first friction element (138, 208, 308) and/or the second friction element (140, 210, 310) are provided to the damper input part or the flange part (102).
8. The flywheel assembly (100, 200, 300) according to claim 7, characterized in that the spring member (142, 212, 312) loads the first friction element (138, 208, 308) and the second friction element (140, 210, 310) relative to each other.
9. The flywheel assembly (100, 200, 300) according to any of the preceding claims 1 to4, characterized in that the damper (108) has a rotation limiter.
10. Drive train with an electric drive and an internal combustion engine operated drive, wherein the drive train has a flywheel assembly (100, 200, 300) according to at least one of the preceding claims.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019109245.0 | 2019-04-09 | ||
| DE102019109245.0A DE102019109245A1 (en) | 2019-04-09 | 2019-04-09 | Flywheel assembly and drive train |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111795114A CN111795114A (en) | 2020-10-20 |
| CN111795114B true CN111795114B (en) | 2024-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010065167.1A Active CN111795114B (en) | 2019-04-09 | 2020-01-20 | Flywheel assembly and drive train |
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| Country | Link |
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| CN (1) | CN111795114B (en) |
| DE (1) | DE102019109245A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203214761U (en) * | 2010-07-21 | 2013-09-25 | 爱信精机株式会社 | Torque variation absorbing device |
| CN103375531A (en) * | 2012-04-16 | 2013-10-30 | 舍弗勒技术股份两合公司 | Centering element for a torsional vibration damper and torsional vibration damper having a centering element |
| DE102017109439A1 (en) * | 2017-05-03 | 2018-11-08 | Schaeffler Technologies AG & Co. KG | Torsional vibration damper with a torque limiter |
| DE102017111265A1 (en) * | 2017-05-23 | 2018-11-29 | Schaeffler Technologies AG & Co. KG | torsional vibration dampers |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006028556B4 (en) * | 2005-07-11 | 2019-10-10 | Schaeffler Technologies AG & Co. KG | Torque transfer device |
| DE102014218966A1 (en) * | 2014-09-22 | 2016-03-24 | Schaeffler Technologies AG & Co. KG | torsional vibration dampers |
| DE102015206284A1 (en) * | 2015-04-09 | 2016-10-13 | Schaeffler Technologies AG & Co. KG | torsional vibration dampers |
| DE102016207708A1 (en) * | 2016-05-04 | 2017-11-09 | Schaeffler Technologies AG & Co. KG | torsional vibration damper |
| DE102016123937A1 (en) * | 2016-12-09 | 2018-06-14 | Schaeffler Technologies AG & Co. KG | Torsional vibration damper with downstream dual-mass flywheel |
-
2019
- 2019-04-09 DE DE102019109245.0A patent/DE102019109245A1/en not_active Ceased
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2020
- 2020-01-20 CN CN202010065167.1A patent/CN111795114B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203214761U (en) * | 2010-07-21 | 2013-09-25 | 爱信精机株式会社 | Torque variation absorbing device |
| CN103375531A (en) * | 2012-04-16 | 2013-10-30 | 舍弗勒技术股份两合公司 | Centering element for a torsional vibration damper and torsional vibration damper having a centering element |
| DE102017109439A1 (en) * | 2017-05-03 | 2018-11-08 | Schaeffler Technologies AG & Co. KG | Torsional vibration damper with a torque limiter |
| DE102017111265A1 (en) * | 2017-05-23 | 2018-11-29 | Schaeffler Technologies AG & Co. KG | torsional vibration dampers |
Also Published As
| Publication number | Publication date |
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| DE102019109245A1 (en) | 2020-10-15 |
| CN111795114A (en) | 2020-10-20 |
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