DE102013201981A1 - Torsional vibration damper for use in powertrain of motor car, has rotatable centrifugal force pendulums axially arranged next to each other and radially outside of annular duct within axial installation space of masses - Google Patents

Torsional vibration damper for use in powertrain of motor car, has rotatable centrifugal force pendulums axially arranged next to each other and radially outside of annular duct within axial installation space of masses

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Publication number
DE102013201981A1
DE102013201981A1 DE201310201981 DE102013201981A DE102013201981A1 DE 102013201981 A1 DE102013201981 A1 DE 102013201981A1 DE 201310201981 DE201310201981 DE 201310201981 DE 102013201981 A DE102013201981 A DE 102013201981A DE 102013201981 A1 DE102013201981 A1 DE 102013201981A1
Authority
DE
Germany
Prior art keywords
pendulum
torsional vibration
vibration damper
characterized
masses
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE201310201981
Other languages
German (de)
Inventor
Jürgen Pfeiffer
Hartmut Mende
Michael Lipps
Roland Seebacher
Ad Kooy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audi AG
Schaeffler Technologies AG and Co KG
Original Assignee
Audi AG
Schaeffler Technologies AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Audi AG, Schaeffler Technologies AG and Co KG filed Critical Audi AG
Priority to DE201310201981 priority Critical patent/DE102013201981A1/en
Publication of DE102013201981A1 publication Critical patent/DE102013201981A1/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12Suppression 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
    • F16F15/131Suppression 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
    • F16F15/133Suppression 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
    • F16F15/134Wound springs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14Suppression 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
    • F16F15/1407Suppression 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
    • F16F15/145Masses mounted with play with respect to driving means thus enabling free movement over a limited range
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00Friction clutches
    • F16D13/58Details
    • F16D13/60Clutching elements
    • F16D13/64Clutch-plates; Clutch-lamellae

Abstract

The damper (1) has a primary momentum mass (2) rotatable at a rotational axis (D). A secondary momentum mass (3) is limited relative to the primary mass against effect of bow springs (12) arranged over circumference of an annular duct (11) formed by the primary mass. The secondary mass is provided with two rotatable centrifugal force pendulums (5, 6), pendulum flanges (16, 17) and pendulum masses (21, 22). The two rotatable centrifugal force pendulums are axially arranged next to each other and radially outside of the annular duct within an axial installation space of the masses.

Description

  • The invention relates to a torsional vibration damper in a drive train of a motor vehicle with a torsionally vibrating engine with a rotatable about a rotation axis primary flywheel and a counter to the effect of over the circumference in one of the primary flywheel formed annular channel bow springs arranged limited rotatable secondary flywheel with at least two centrifugal pendulums with each a pendulum and on both sides of this limited on raceways pivotable, each axially opposite pendulum mass pairs connected pendulum masses.
  • Drive trains in motor vehicles mostly contain torsional vibration-sensitive internal combustion engines. In order to isolate these torsional vibrations from the gearbox, torsional vibration dampers in the form of dual mass dampers, such as dual mass flywheels, are well known. Due to increased demands continue to be two-mass damper with a centrifugal pendulum example of the DE 10 2009 042 836 A1 known. Here, a pendulum flange is connected to the secondary flywheel of the dual mass damper, which distributed on both sides over the circumference, relative to this has limited pivotable pendulum masses. Each axially opposite pendulum masses are connected to pendulum mass pairs. The pendulum and the pendulum masses each have raceways for rolling elements, so that the pendulum masses are pivotable relative to the pendulum flange by a predetermined swing angle and form a speed-adaptive vibration absorber. Due to the mass of the pendulum masses and the design and arrangement of the raceways, the centrifugal pendulum is tuned to a predetermined order of vibration of the internal combustion engine, the vibration order is again dependent on the number of cylinders of an internal combustion engine.
  • For the efficient use of fuel, internal combustion engines are known in which all cylinders are operated in full-load operation and part of the cylinders can be switched off in a partial-load operation, so that the oscillation order changes depending on these operating conditions. Furthermore, internal combustion engines may have secondary vibration orders in addition to a main vibration order, which are advantageously also eliminated or minimized by means of a centrifugal pendulum pendulum. It can therefore be used two or more centrifugal pendulums, which are each tuned to a vibration order. For reasons of space, in particular with respect to the axial length of a torsional vibration damper several centrifugal pendulum are generally unfavorable. Alternatively, therefore, a single centrifugal pendulum pendulum masses with different vibration angles and / or masses may be provided so that a part of the pendulum mass pairs may be tuned to a vibration order and another part to a further order of vibration. Due to the different oscillation angles of the pendulum mass pairs matched to different vibration orders, this design is generally less advantageous.
  • The object of the invention is therefore to propose a torsional vibration damper with two centrifugal pendulums, which have a small space requirement, in particular a short axial length.
  • The object is by a torsional vibration damper in a drive train of a motor vehicle with a torsionally vibrating internal combustion engine with a rotatable about a rotation axis primary flywheel and against this opposite the effect of over the circumference in an annular groove formed by the primary flywheel arranged bow springs limited rotatable secondary flywheel with at least two centrifugal pendulums in each case a pendulum flange and on both sides of this limited on raceways pivotable, each axially opposite pendulum mass pairs connected pendulum masses solved, wherein at least two centrifugal pendulum are arranged axially adjacent to each other radially outside the annular channel within the axial space of the primary and secondary flywheel. By restricting the centrifugal pendulum to the axial space of the two-mass damper at least two centrifugal pendulum can be provided without increasing the axial space. The radial space can be kept substantially constant or expanded only to a small extent, for example, by the annular channel is displaced radially inward. By appropriate adjustment of the centrifugal pendulum, the vibration behavior of an internal combustion engine with partially disable cylinders, for example, a 4-cylinder internal combustion engine with two disengageable cylinders, are damped by next to the dual mass damper at least one centrifugal pendulum to the main vibration order in 4-cylinder operation and at least one centrifugal pendulum be tuned to the main vibration order in 2-cylinder operation. It is understood that the two differently balanced centrifugal pendulum can also be tuned to a main and a secondary order of a constantly operated with maximum number of cylinders internal combustion engine. The vote of the centrifugal pendulum to the corresponding vibration orders is done by appropriate design of the raceways on the pendulum masses and Pendulum flanges and / or by appropriate adjustment of the masses of the pendulum masses, so that at a given swing angle, a resonance condition of the centrifugal pendulum is tuned to the appropriate vibration order.
  • It has proved to be advantageous if the centrifugal pendulum have substantially the same spatial extent. In this way, both centrifugal pendulum take approximately the same space for optimal space utilization. In both centrifugal pendulum common parts, for example, the same pendulum flanges and / or same pendulum masses, rolling elements and the like can be used.
  • The centrifugal pendulums are assigned to the secondary flywheel mass. According to a preferred embodiment, the pendulum flanges of the centrifugal pendulum are provided radially on the outside with an axial projection in the direction of the secondary flywheel and are connected by means of these approaches with the secondary flywheel. Here, the secondary flywheel adjacent pendulum is riveted to this and the opposite of this remote pendulum welded to the adjacent pendulum flange. The axial projections at the same time form a burst protection to prevent radially outwardly accelerated bursting parts of a damaged or destroyed centrifugal pendulum. In addition, a cover part forming the annular channel has a radially widened disk section, on which a further axial projection is provided, which axially engages over the pendulum masses adjacent to the disk section. This is preferably arranged at the same radial height as the arranged on the pendulum masses axial projections, so that a uniform radial outer circumference of the torsional vibration damper is achieved.
  • The invention is based on the in the 1 and 2 illustrated embodiment illustrated. Showing:
  • 1 a partial section through a torsional vibration damper with two axially juxtaposed centrifugal pendulum
    and
  • 2 a section through a support structure of the torsional vibration damper of 1 with the two centrifugal pendulums.
  • The 1 shows a partial section of the rotatable about the axis of rotation d torsional vibration damper 1 with the from the primary flywheel 2 and the secondary flywheel 3 formed two-mass damper 4 and the centrifugal pendulums 5 . 6 , The primary flywheel 2 is out of the hub 7 recorded disc part 8th , the lid part 9 and the drive plate 10 educated. The disc part 8th and the lid part 9 form the ring channel 11 in which the bow springs 12 accommodated and acted upon primary side. The secondary flywheel 3 is from the flywheel 13 , which - as shown - from two interconnected parts or integrally formed and may have a friction surface for a arranged at this friction clutch, and with this by means of the rivet 14 riveted, the bow springs 12 on the secondary side acting flange 15 educated. The secondary flywheel 3 For example, further output-side flywheel elements can be assigned to a friction clutch and the like, for example.
  • The two centrifugal pendulums 5 . 6 are outside the ring channel 11 axially adjacent and within of the disk part 8th and the flywheel 13 housed axially limited space. These are for both centrifugal pendulum 5 . 6 Pendelflansche 16 . 17 with one at the outer periphery of this axially in the direction of the flywheel 13 folded axial approach 18 . 19 Mistake. The pendulum flanges 16 . 17 are here formed at least in raw form as equal parts. The pendulum flange 17 is right on the flywheel 13 by means of the spacer rivets 20 connected. The pendulum masses connected to pendulum masses, each axially opposite pendulum masses 21 are by means not shown rolling elements, which on known raceways of the pendulum 17 and the pendulum masses 21 roll over, opposite the pendulum flange 17 in a corresponding circumferentially and in the radial direction according to a predetermined swing angle limited pivotally arranged.
  • The pendulum flange 16 of the centrifugal pendulum 5 is with its approach 18 with the pendulum flange 17 For example, by means of a MAG welding process along four 90 ° -Kreissegmenten welded. The pendulum masses 22 of the centrifugal pendulum 5 are according to the pendulum masses 21 of the centrifugal pendulum 6 pivotally received, but on a relation to the vibration order of the centrifugal pendulum 6 designed other vibration order.
  • The lid part 9 has radially outside the annular channel 11 the radially enlarged disc portion 23 with the at the outer periphery axially in the direction of the pendulum 16 implemented approach 24 on. The three approaches 18 . 19 . 24 form a burst protection in the sense of a Abfangkäfigs for radially accelerated components of the centrifugal pendulum 5 . 6 For example, pendulum masses, arranged between the Pendelmassenpaaren pendulum masses arranged spacers, rolling elements and the like and their fragments. Furthermore, the approaches 18 . 19 . 24 an entrance protection for Foreign bodies form from the outside, so that's the centrifugal pendulum 5 . 6 protected against damage or destruction. The approaches 18 . 19 . 24 are preferably arranged at the same radial height.
  • The 2 shows the support structure 25 of the torsional vibration damper 1 of the 1 in partial section. The disc part 8th and the lid part 9 are assigned to the primary side, the flywheel 13 as well as the centrifugal pendulum 5 . 6 the secondary side. The disc part 8th and the lid part 9 form the supporting elements for the bow springs 12 ( 1 ) and the secondary flywheel 13 carries the centrifugal pendulum 5 . 6 ,
  • LIST OF REFERENCE NUMBERS
  • 1
     torsional vibration dampers
    2
     Primary flywheel
    3
     Secondary flywheel mass
    4
     Two mass damper
    5
     centrifugal pendulum
    6
     centrifugal pendulum
    7
     hub
    8th
     disk part
    9
     cover part
    10
     drive plate
    11
     annular channel
    12
     bow spring
    13
     flywheel
    14
     rivet
    15
     flange
    16
     pendulum
    17
     pendulum
    18
     approach
    19
     approach
    20
     Abstandsniet
    21
     pendulum mass
    22
     pendulum mass
    23
     disk portion
    24
     approach
    25
     supporting structure
    d
     axis of rotation
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • DE 102009042836 A1 [0002]

Claims (10)

  1. Torsional vibration damper ( 1 ) in a drive train of a motor vehicle having a torsionally vibrating internal combustion engine with a about a rotational axis (d) rotatable primary flywheel ( 2 ) and one opposite to the latter, acting over the circumference in one of the primary flywheels ( 2 ) formed annular channel ( 11 ) arranged bow springs ( 12 ) limited rotatable secondary flywheel ( 3 ) with at least two centrifugal pendulums ( 5 . 6 ) each with a pendulum flange ( 16 . 17 ) and on both sides of this limited on raceways pivotable, each axially opposite to pendulum mass pairs connected pendulum masses ( 21 . 22 ), characterized in that radially outside the annular channel ( 11 ) within the axial space of the primary and secondary flywheels ( 2 . 3 ) at least two centrifugal pendulum ( 5 . 6 ) are arranged axially next to each other.
  2. Torsional vibration damper ( 1 ) according to claim 1, characterized in that the centrifugal pendulum ( 5 . 6 ) have a substantially spatial extent.
  3. Torsional vibration damper ( 1 ) according to claim 1 or 2, characterized in that the centrifugal pendulum ( 5 . 6 ) are tuned to different vibration orders of the internal combustion engine.
  4. Torsional vibration damper ( 1 ) according to one of claims 1 to 3, characterized in that at least one first centrifugal pendulum ( 5 . 6 ) to a vibration order of all cylinders of the internal combustion engine and at least one centrifugal pendulum ( 6 . 5 ) are tuned to a vibration order of a part of the cylinder of the internal combustion engine.
  5. Torsional vibration damper ( 1 ) according to claim 3 or 4, characterized in that the raceways and / or the masses of the centrifugal pendulum ( 5 . 6 ) are different.
  6. Torsional vibration damper ( 1 ) according to one of claims 1 to 5, characterized in that the pendulum flanges ( 16 . 17 ) of the centrifugal pendulum ( 5 . 6 ) radially outward an axial approach ( 18 . 19 ) in the direction of a flywheel ( 13 ) of the secondary flywheel ( 3 ) and by means of these approaches ( 18 . 19 ) with the flywheel ( 13 ) are connected.
  7. Torsional vibration damper ( 1 ) according to claim 6, characterized in that the flywheel ( 13 ) adjacent pendulum flange ( 17 ) is positively connected to this and at least one opposite this more distant pendulum ( 16 ) with an adjacent pendulum flange ( 17 ) is integrally connected.
  8. Torsional vibration damper ( 1 ) according to one of claims 1 to 7, characterized in that a ring channel ( 11 ) forming cover part ( 9 ) a radially enlarged disc portion ( 23 ) and provided on this axial approach ( 24 ) which the disc section ( 23 ) adjacent pendulum masses ( 22 ) overlaps axially.
  9. Torsional vibration damper ( 1 ) according to claim 8, characterized in that the axial projection ( 24 ) of the cover part ( 9 ) substantially at the same radial height as that at the pendulum flanges ( 16 . 17 ) arranged axial approaches ( 18 . 19 ) is arranged.
  10. Torsional vibration damper ( 1 ) according to claim 8 or 9, characterized in that the axial projections ( 18 . 19 . 24 ) form a burst protection and / or entrance protection.
DE201310201981 2013-02-07 2013-02-07 Torsional vibration damper for use in powertrain of motor car, has rotatable centrifugal force pendulums axially arranged next to each other and radially outside of annular duct within axial installation space of masses Pending DE102013201981A1 (en)

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DE102015208736A1 (en) 2014-06-06 2015-12-10 Schaeffler Technologies AG & Co. KG Centrifugal pendulum device
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