WO2008154892A1 - Amortisseur de vibrations de torsion - Google Patents

Amortisseur de vibrations de torsion Download PDF

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Publication number
WO2008154892A1
WO2008154892A1 PCT/DE2008/000938 DE2008000938W WO2008154892A1 WO 2008154892 A1 WO2008154892 A1 WO 2008154892A1 DE 2008000938 W DE2008000938 W DE 2008000938W WO 2008154892 A1 WO2008154892 A1 WO 2008154892A1
Authority
WO
WIPO (PCT)
Prior art keywords
energy storage
storage device
vibration damper
torsional vibration
variator
Prior art date
Application number
PCT/DE2008/000938
Other languages
German (de)
English (en)
Inventor
Laurent Ineichen
Eugen Kremer
Wolfgang Reik
Andreas Triller
Original Assignee
Luk Lamellen Und Kupplungsbau Beteiligungs 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 Luk Lamellen Und Kupplungsbau Beteiligungs Kg filed Critical Luk Lamellen Und Kupplungsbau Beteiligungs Kg
Priority to DE112008001252T priority Critical patent/DE112008001252A5/de
Publication of WO2008154892A1 publication Critical patent/WO2008154892A1/fr

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Classifications

    • 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
    • F16F15/13157—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 with a kinematic mechanism or gear system, e.g. planetary

Definitions

  • the invention relates to a torsional vibration damper, in particular a split flywheel, for torque transmission in a drive train, with a primary and a secondary flywheel, which are rotatable relative to the resistance of a first energy storage device and / or a second energy storage device relative to each other, the switchable parallel to the first energy storage device or switched.
  • the invention further relates to a method for transmitting torque in a drive train with a previously described torsional vibration damper.
  • Such torsional vibration dampers are connected, for example, in the drive train of a motor vehicle between the drive motor and the transmission.
  • fluctuations or irregularities in the drive torque output by the drive motor can occur, which excite the primary flywheel to oscillate.
  • These vibrations should not be transferred to the secondary flywheel, as they could lead to damage in a coupled with the secondary flywheel gearbox.
  • the object of the invention is to provide a torsional vibration damper according to the preamble of claim 1, which makes it possible to isolate vibrationally occurring during operation irregularities, in particular drive torque fluctuations.
  • the object is with a torsional vibration damper, in particular a split flywheel, for torque transmission in a drive train, with a primary and a secondary flywheel, which are rotatable relative to the resistance of a first energy storage device and / or a second energy storage device relative to each other, parallel to the first energy storage device is switched or switched, thereby achieved that a mechanical variator in series with the first or the second energy storage device is switched or switched.
  • the mechanical variator makes it possible to filter fluctuations in the drive motor torque by means of the second energy storage device, which is preferably designed as a degressive spring device, such that only one central torque is transmitted from the primary to the secondary flywheel.
  • a preferred embodiment of the torsional vibration damper is characterized in that the mechanical variator is controllable by occurring during operation deformation of the second energy storage device, which has a degressive spring action.
  • the mechanical variator allows a simple way of tracking the second energy storage device.
  • a further preferred embodiment of the torsional vibration damper is characterized in that the two flywheel masses are coupled together by the first energy storage device.
  • the first energy storage device preferably has a relatively high rigidity in order to enable the transmission of large drive torques with a limited angle of rotation.
  • Another preferred embodiment of the torsional vibration damper is characterized in that the mechanical variator is designed as a transmission.
  • the gearbox allows a variable variator ratio.
  • the mechanical variator comprises a planetary gear.
  • the planetary gear is also referred to as planetary gear.
  • a further preferred embodiment of the torsional vibration damper is characterized in that the variator comprises a ring gear, planet wheels and a drive sun gear and a driven sun rad.
  • the ring gear can be made stationary.
  • a further preferred embodiment of the torsional vibration damper is characterized in that the drive sun gear is arranged in the axial direction at a fixed distance to the driven sun gear.
  • the two sun gears together, in particular with the secondary flywheel, movable in the axial direction to allow a change in the Variatorübera.
  • the drive sun gear is rotatable to the output sun gear.
  • the drive sun gear can be mounted on the secondary flywheel with the aid of a bearing device.
  • Another preferred embodiment of the torsional vibration damper is characterized in that the primary flywheel mass is coupled by the second energy storage device to a carrier, which in turn is coupled to the variator.
  • the drive sun gear is rotatably connected to the carrier.
  • torsional vibration damper is characterized in that the carrier cooperates via a ramp mechanism with the primary flywheel.
  • the ramp mechanism serves to transform the deformation of the second energy storage device into an axial path of the sun gears and thereby a change in variator ratio.
  • a desired dependency of the variator ratio of the deformation of the second energy storage device can be implemented.
  • a further preferred embodiment of the torsional vibration damper is characterized in that the ring gear is kinematically coupled by an additional translation device with the secondary flywheel.
  • the above-mentioned object is achieved in that a static input torque is transmitted to the secondary flywheel via the first energy storage device when the second energy storage device is in a rest position and the variator ratio is equal to 1, and in that the two energy storage devices, when driving torque fluctuations occur at relatively high frequencies, cooperate as long as the second energy storage device operates within a permissible operating range.
  • Both energy storage devices work together as a total soft spring, so that the torsional vibration damper according to the invention acts as a low-pass filter for the moment occurring.
  • a preferred embodiment of the method is characterized in that the second energy storage device, when a mean torque occurring during operation increases or decreases virtually statically, moves out of its permissible working range and a Adjustment takes place by adjusting the variator ratio to be different from 1 and the second energy storage device returns to its allowable working range.
  • FIGS. 1-10 are schematic representations of a torsional vibration damper according to
  • Figure 5 shows a design example of a torsional vibration damper according to the invention in the initial position
  • Figure 6 shows the torsional vibration damper of Figure 5 in a Nachwolfswolf
  • Figure 7 shows a similar torsional vibration damper as in Figures 5 and 6 according to a further embodiment.
  • FIGS. 1 to 4 show a torsional vibration damper in the form of a dual-mass flywheel.
  • the dual-mass flywheel comprises a primary flywheel mass 1 which can be fastened to a crankshaft of an internal combustion engine of a motor vehicle and which is also referred to as a primary flywheel.
  • a secondary flywheel 2 is mounted coaxially and rotatable relative to the primary flywheel 1 by means of a bearing device (not shown).
  • the secondary flywheel 2 is also referred to as a secondary flywheel.
  • the primary flywheel 1 is drivingly connected to the secondary flywheel 2 via a compressible energy storage having first energy storage device 3.
  • the energy stores of the first energy storage device 3 are preferably a plurality of elongated coil springs with a relatively large compression travel.
  • a second energy storage device 4 is connected in parallel with the first energy storage device 3.
  • the second energy storage device 4 comprises at least one degressive or inverse spring.
  • the degressive or inverse effect of the second energy storage device 4 counteracts the spring action of the first energy storage device 3 in order to isolate vibrations.
  • a mechanical variator 5 is integrated in the torsional vibration damper. This provides a mechanical-hydraulic torsional vibration damper based on a degressive spring that filters drive torque fluctuations and transmits a center torque.
  • the second energy storage device 4 is connected in series between the primary flywheel 1 and the mechanical variator 5.
  • the mechanical variator 5 in turn is connected in series between the second energy storage device 4 and the secondary flywheel 2.
  • a dashed line 9 indicates that the deformation 8 of the second energy storage device 4 is used to control or regulate the mechanical variator 5.
  • the torsional vibration damper shown in Figure 1 operates as follows: As a starting point, a state is considered in which a static input torque acts on the primary flywheel 1 and is completely transferred from the first energy storage device 3, which is also referred to as the main spring, to the secondary flywheel 2 , In this case, the second energy storage device 4 is in its rest position and generates no moment. If engine torque fluctuations occur at relatively high frequencies, then the overall equipment will vibrate and function as a low pass filter for the moment. With regard to the vibrations occurring, the first energy storage device 3 and the second energy storage device 4 act together as a total soft spring. If the center moment increases or decreases virtually statically, then the second energy storage device 4 tends to move out of its working range. According to an essential aspect of the invention, an adjustment or tracking of the second energy storage device 4 takes place.
  • the mechanical variator 5 is connected in series between the primary flywheel mass 1 and the second energy storage device 4.
  • the second energy storage device 4 in turn is connected in series between the mechanical variator 5 and the second flywheel 2.
  • the torsional vibration damper shown in Figure 2 works the same as the torsional vibration damper shown in Figure 1.
  • the mechanical variator 5 is connected in each case in series with the first energy storage device 3.
  • the mechanical variator 5 is furthermore connected in series between the primary flywheel mass 1 and the first energy storage device 3.
  • the mechanical variator 5 is connected in series between the first energy storage device 3 and the secondary flywheel 2.
  • the mechanical variator 5 is controlled in the embodiments shown in Figures 3 and 4, as in the embodiments shown in Figures 1 and 2, by the deformation of the second energy storage device 4.
  • FIGS. 5 to 7 show two examples of a structural conversion of the torsional vibration damper shown schematically in FIG.
  • a primary flywheel 11 and a secondary flywheel 12 are coupled together by a first energy storage device 13.
  • the first energy storage device 13 comprises two main springs.
  • the primary flywheel 11 is also coupled by a second energy storage device 14 to a mechanical variator 15.
  • the second energy storage device 14 comprises a plurality of degressive springs.
  • the mechanical variator 15 is controlled by the deformation of the degressive springs 14.
  • the variator ratio can be a continuous non-decreasing function of the deformation of the declining springs 14, possibly with an interval in which the ratio remains constant and equal to 1 and which corresponds to a permissible working range of the degressive springs 14.
  • the second energy storage device 14 according to one embodiment comprises a plurality of prestressed and radially arranged degressive springs.
  • the mechanical variator 15 includes a ring gear 16, which is fixed in the embodiment shown in Figures 5 and 6. With the ring gear 16 are planetary gears 17, 18 are engaged, which are also engaged with a drive sun gear 21 and a driven sun gear 22 in engagement.
  • the output sun gear 22 is fixedly connected to the secondary flywheel 12.
  • the drive sun gear 21 is arranged at a fixed axial distance from the output sun gear 22 and is rotatably mounted on the secondary flywheel 12 by means of a bearing device 23.
  • the drive sun gear 21 is non-rotatably connected to a carrier 24, which is coupled via the second energy storage device 14 with the primary flywheel 11.
  • the carrier 24 and the secondary flywheel 12 are coupled as drive and driven by the mechanical variator 15.
  • the carrier 24 cooperates via a ramp mechanism 25 with the primary flywheel 11.
  • the ramp mechanism 25 serves to transform the deformation of the second energy storage device 14 in an axial path of the sun gears 21, 22 fixedly coupled together in the axial direction and thereby into a ratio change. By designing the ramp pitch, a desired dependency of the variator ratio on the deformation of the second energy storage device can be implemented.
  • the degressive spring 14 tends to move out of its working area and there is an adjustment or tracking instead.
  • the adjustment or tracking is that the Variatorüber ein 1 deviates and thus the degressive spring returns to its working area.
  • the interval of constant translation is desired, but not necessary. It is sufficient if the control loop is slow with respect to the insulating vibrations.
  • the controller can also be designed according to a common pattern in control technology, for example as a P, PI and PID controller.
  • FIG. 7 shows an improved torsional vibration damper with a modified mechanical variator 35.
  • the modification is that the ring gear 36 is not is more stationary, but is kinematically coupled by an additional translation device 38 to the secondary flywheel 12. This increases the accuracy of the mechanical variator when the ratio is to be very close to unity. This has the consequence that a small deviation of the variator ratio of 1 can be achieved with a larger Axialweg and the geometric tolerances are not too critical.
  • the additional translation device 38 includes a driven gear 41 which is rotatably connected to the secondary flywheel 12 and is in engagement with a first transmission gear 42.
  • the first gear 42 has a slightly smaller outer diameter than a second gear 43, which is coupled via a coupling gear 45 with the ring gear 36.
  • the ring gear 36 is rotatably mounted.
  • the two translation wheels 42, 43 are rotatably connected to each other and rotatably supported together.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne un amortisseur de vibrations de torsion, en particulier un volant d'inertie en deux parties, pour la transmission de couple dans une ligne de transmission, avec une masse d'inertie primaire (1, 11) et une masse d'inertie secondaire (2, 12) qui sont rotatives l'une par rapport à l'autre contre la résistance d'un premier dispositif accumulateur d'énergie (3, 13) et/ou d'un deuxième dispositif accumulateur d'énergie (4, 14) qui est ou peut être monté en parallèle avec le premier dispositif accumulateur d'énergie. Selon l'invention, un variateur mécanique (5, 15) est ou peut être monté en série avec le premier ou le deuxième dispositif accumulateur d'énergie.
PCT/DE2008/000938 2007-06-18 2008-06-05 Amortisseur de vibrations de torsion WO2008154892A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112008001252T DE112008001252A5 (de) 2007-06-18 2008-06-05 Torsionsschwingungsdämpfer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007027909 2007-06-18
DE102007027909.6 2007-06-18

Publications (1)

Publication Number Publication Date
WO2008154892A1 true WO2008154892A1 (fr) 2008-12-24

Family

ID=39720298

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000938 WO2008154892A1 (fr) 2007-06-18 2008-06-05 Amortisseur de vibrations de torsion

Country Status (2)

Country Link
DE (2) DE112008001252A5 (fr)
WO (1) WO2008154892A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3053424B1 (fr) * 2016-07-01 2018-07-27 Valeo Embrayages Amortisseur de torsion
DE102022117077A1 (de) * 2022-07-08 2024-01-11 Hasse & Wrede Gmbh Drehschwingungsisolierte Kupplung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19726477A1 (de) * 1997-06-21 1998-12-24 Mannesmann Sachs Ag Torsionsschwingungsdämpfer mit bewegbaren Massen
DE19926696A1 (de) * 1999-06-11 2000-12-14 Mannesmann Sachs Ag Antriebsstrang mit drehzahlabhängiger Steifigkeit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19726477A1 (de) * 1997-06-21 1998-12-24 Mannesmann Sachs Ag Torsionsschwingungsdämpfer mit bewegbaren Massen
DE19926696A1 (de) * 1999-06-11 2000-12-14 Mannesmann Sachs Ag Antriebsstrang mit drehzahlabhängiger Steifigkeit

Also Published As

Publication number Publication date
DE112008001252A5 (de) 2010-02-11
DE102008027080A1 (de) 2008-12-24

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