WO2017092749A1 - Fliehkraftpendel - Google Patents
Fliehkraftpendel Download PDFInfo
- Publication number
- WO2017092749A1 WO2017092749A1 PCT/DE2016/200541 DE2016200541W WO2017092749A1 WO 2017092749 A1 WO2017092749 A1 WO 2017092749A1 DE 2016200541 W DE2016200541 W DE 2016200541W WO 2017092749 A1 WO2017092749 A1 WO 2017092749A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pendulum
- mass
- pendulum mass
- centrifugal
- spring
- Prior art date
Links
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
- F16F15/14—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
- F16F15/1414—Masses driven by elastic elements
- F16F15/1421—Metallic springs, e.g. coil or spiral springs
Definitions
- the invention relates to a centrifugal pendulum for damping induced by a drive shaft of an automotive engine Rotationsleichformmaschineen, with the help of the rotational non-uniformity directed return torque can be generated.
- a centrifugal pendulum for damping rotational irregularities introduced via a drive shaft of a motor vehicle engine which can have monofilar pendulum masses connected to a support flange in a monobloc fashion via only one connection point and bifilarly.
- a centrifugal pendulum for damping rotational irregularities introduced via a drive shaft of a motor vehicle engine is provided with a carrier flange which can be connected to the drive shaft, a monofilar first partial pendulum mass connected to the carrier flange for producing a restoring torque directed against rotational nonuniformity, a monofilar second pendulum mass connected to the carrier flange for generating one of the rotary non-uniformity opposing return torque and acting on the first part pendulum mass and the second part pendulum mass coupling spring for moving apart the centers of gravity of the Operapendelmassen, under centrifugal force, the centers of gravity of the Operapendelmassen against the spring force of the coupling spring are mutually movable.
- a total mass center of gravity of a theoretical pendulum mass of the centrifugal pendulum pendulum is composed by the position of the center of mass of the pendulum masses coupled to one another via the coupling spring.
- a change in position of the centers of gravity of the pendulum masses in particular by pivoting the sub-pendulum masses about a pendulum axis set to the assigned center of gravity, can lead to a change in position of the total mass center of gravity of the centrifugal pendulum.
- the sub-pendulum masses When the sub-pendulum masses are moved away from each other by the coupling spring, the sub-pendulum masses can be pivoted to a position in which the center of gravity of the sub-pendulum masses are positioned closer to a pivot axis of the support flange.
- the center of gravity of the sub-pendulum masses can be positioned further away from the axis of rotation of the carrier flange, as a result of which the total mass center of gravity of the centrifugal pendulum has a larger theoretical pendulum length relative to the theoretical pivot point of the theoretical pendulum mass.
- a large Tilger inch Q is particularly effective at large pivoting angles of the centrifugal pendulum, with smaller pivoting angles less effect is achieved.
- a low Tilger whatsoever Q is particularly effective at small pivoting angles of the centrifugal pendulum, but with large swing angles less effect is achieved.
- the maximum intended pivoting angle is essentially used only at low speeds and at high speeds only lower tilt angles occur. Due to the deliberate reduction of the absorber order with increasing speeds due to the centrifugal force-induced increase in the theoretical pendulum length, the absorber arrangement can be automatically adapted to the respective rated speed.
- a Tilger eleven for the centrifugal pendulum can be achieved both at a low rated speed and at a high rated speed, which achieve a good damping result in rotational irregularities, for example in the form of speed fluctuations with the frequency of an integer multiple of the engine order for the corresponding speed.
- the effective theoretical pendulum length of the centrifugal pendulum pendulum can be changed due to centrifugal force to set a suitable Tilger eleven for the current rated speed, so that a drive train of a motor vehicle with good damping capacity of torsional vibrations is possible.
- the respective sub-pendulum mass Due to the monofilament connection of the sub-pendulum masses, the respective sub-pendulum mass has only exactly one connection to the support flange.
- the respective part pendulum mass is rotatably connected to exactly one pivot point about a pendulum axis stationary to the support flange.
- the respective partial piling mass is rotatably connected to the carrier flange via a bearing pin inserted in a corresponding opening.
- the monofilar connection of the partial pendulum masses leads to a comparatively simple movement profile of the respective pendulum pendulum mass relative to the support flange, which consists in particular in a pure pivoting movement about an oscillating axis about the axis of rotation of the support flange, along which the pendulum mass reciprocates in both circumferential directions can commute.
- the common pendulum axis represents the theoretical pivot point of the composite by the pendulum masses and the coupling spring theoretical pendulum mass If the first part pendulum mass and the second part pendulum mass are rotatably mounted about different mutually offset pendulum axes, the theoretical pivot point of the theoretical pendulum mass of the centrifugal pendulum as the center of the movement curve of the total center of gravity of the considered pendulum mass of the centrifugal pendulum.
- the sub-pendulum masses are in particular symmetrical, preferably mirror-image, configured so that the same inertial mass and the same mass moment of inertia result for the part pendulum masses.
- the first part pendulum mass and the second part pendulum mass are designed as identical parts, wherein the second Operapendelmas- se is rotated around a radially extending axis by 180 ° compared to the first part pendulum mass.
- the pendulum masses of the centrifugal pendulum under the influence of centrifugal force endeavor to assume a position as far as possible from the center of rotation.
- the mass center of the pendulum mass will assume this radially outward position
- the center of gravity of the pendulum mass can thereby be shifted in the direction of the center of rotation
- the centrifugal force acting on the pendulum mass is thereby divided into one component tangentially and another component normal to the pendulum track
- the tangential force component provides the restoring force which the Pendulum mass back in their "zero position" wants to bring while the normal force component on a speed fluctuations initiating force application element, in particular a connected to the drive shaft of the motor vehicle flywheel, acting and there a Gegenm oment generates, which counteracts the speed fluctuation and dampens the introduced speed fluctuations.
- the center of gravity of the pendulum mass can therefore be maximally swung out and assume the radially innermost position.
- several pendulum masses can be distributed uniformly in the circumferential direction.
- the inertial mass of the pendulum mass and / or the relative movement of the pendulum mass to the support flange is in particular for damping a certain frequency range of rotational irregularities, in particular an engine order of the Motor vehicle engine, designed.
- more than one pendulum mass and / or more than one support flange is provided.
- the support flange is arranged between two pendulum masses.
- the pendulum mass can be accommodated between two flange parts of the support flange, wherein the flange parts are connected to each other in a Y-shape, for example.
- a pivotable in the printing direction of the coupling spring pivot angle of the first part pendulum mass and the second part pendulum mass is limited by a limit stop.
- a first pendulum volume that can be painted over by the first part pendulum mass is spaced apart from a second pendulum volume that can be painted over by the second part pendulum mass.
- the sub-pendulum masses can block each other when moving towards each other.
- the pendulum masses can instead be moved past each other.
- the first part pendulum mass is arranged offset from one another to the second part pendulum mass in the axial direction.
- the partial pendulum masses can at least partially overlap without striking each other, so that space in the circumferential direction can be saved.
- the damping effect can be correspondingly high.
- first part pendulum mass are rotatable about a first pendulum axis and the second part pendulum mass about a second pendulum axis, whereby the first part pendulum delachse and the second pendulum axis have a substantially equal distance from a rotation axis of the support flange.
- the arrangement of the pendulum axes on a common radius to the axis of rotation of the support flange can result in substantially symmetrical, in particular mirror-image, motion profiles for the sub-pendulum masses. This results in a similar motion profile in both pivot directions for the trained by the coupled part pendulum masses theoretical pendulum mass.
- the total mass center of gravity can thereby move on a circular path about a pivot point, which lies centrally on an imaginary connecting line between the pendulum axes of the sub-pendulum masses.
- the first part pendulum mass and the second part pendulum mass about a common pendulum axis, in particular via a common bearing pin, rotatable.
- a first pendulum axis of the first part pendulum mass and a second pendulum axis of the second part pendulum mass can thereby coincide to a common pend- delachse, which can simultaneously represent the pivot point for the total mass center of the composite by the coupled pendulum mass pendulum mass.
- the coupling spring is designed as a tensile or compressive loaded coil spring, torsion spring, leg spring, bow spring or bow spring.
- a suitable coupling spring can be selected. It is possible that the coupling spring acts radially outward to the pendulum axis of the part pendulum masses as a compression spring or radially within the pendulum axis of the pendulum masses as a tension spring on the part pendulum masses.
- the coupling spring is guided on the support flange or a component connected to the support flange, in particular a bearing bolt for mounting the first part pendulum mass and / or the second part pendulum mass. Even with a sudden impact of torque ("Impact"), the correct relative position of the coupling spring to be kept.
- the coupling spring can be wound as a torsion spring or leg spring around a part of the bearing pin.
- the first part pendulum mass and the second part pendulum mass is arranged in the axial direction between the support flange and a cover connected to the support flange, wherein the support flange and the cover substantially completely cover the first part pendulum mass and the second part pendulum mass viewed in the axial direction.
- the partial pendulum masses can thereby be protected in a receiving space formed between the support flange and the roof.
- the support flange covers the part pendulum masses radially outward and can additionally serve as bursting protection.
- the first part pendulum mass and / or the second part pendulum mass under a centrifugal force, in particular against a spring force of a retaining spring, with a proportion displaceable radially outward mass body for centrifugally induced displacement of the center of mass of the pendulum mass.
- the mass body which can be displaced relative to the partial pendulum mass, the center of mass of the pendulum mass can be changed as a function of the centrifugal force acting on the mass body.
- the center of mass of the pendulum mass shifts to a larger radius.
- the relevant for the Tilger inch pendulum length can be influenced not only by the pivot angle of the first part pendulum mass and the second part pendulum mass but also by the change of the center of mass within the respective part pendulum mass by the centrifugal force displacement of the mass body. This makes it possible via the spring characteristic of the coupling spring and the spring characteristic of the retaining spring to adjust the course of Tilger inch depending on the current speed suitable and to provide different gradients of Tilgerix inch in different speed ranges.
- FIG. 2 shows a schematic simplified schematic representation of the centrifugal pendulum of FIG. 1 at a low speed
- FIG. 3 is a schematic simplified schematic representation of the centrifugal pendulum of FIG. 1 at an average speed
- FIG. 4 shows a schematic simplified schematic representation of the centrifugal pendulum of FIG. 1 at a high speed
- FIG. 5 shows a schematic sectional view of an embodiment of the centrifugal pendulum of FIG. 4,
- FIG. 6 is a schematic simplified schematic representation of a second embodiment of a centrifugal pendulum at a low speed
- Fig. 7 is a schematic simplified schematic representation of the centrifugal pendulum of Fig. 6 at a medium speed
- FIG. 8 is a schematic simplified schematic representation of the centrifugal pendulum of FIG. 6 at a high speed.
- centrifugal pendulum 10 has a rotatable about an axis of rotation 12 support flange 14, with a plurality of circumferentially successively arranged pendulum masses 16 are pivotally connected.
- the pendulum masses 16 are in this case each composed of a first part pendulum mass 18 and a second part pendulum mass 20, which are connected to one another via a, for example, designed as a helical compression spring coupling spring 22.
- the first part pendulum mass 18 is rotatably coupled to the support flange 14 about a first pendulum axis 24, while the second part pendulum mass 20 is rotatably coupled to the support flange 14 about a second pendulum axis 26.
- the first pendulum axis 24 and the second pendulum axis coincide 26 to a common pendulum axis, wherein it is also possible that the pendulum axes 24, 26 are provided on a common radius circumferentially spaced from each other.
- the pendulum mass 16 composed of the partial pendulum masses 18, 20 and the coupling spring 22 can deflect due to their inertia and thereby initiate a rotational torque opposite return torque in the support flange 14.
- the first part pendulum mass 18 has a first center of gravity 28 and the second part pendulum mass 20 has a second center of mass 30.
- a centrifugal force 32 acts on the center of gravity 28, 30 of the sub-pendulum masses 18, 20, which has a proportion in the tangential direction due to the relative position of the sub-pendulum masses 18, 20 deflected from the radial direction. Due to the tangential portion of the centrifugal force 32, the centers of gravity 28, 30 of the partial pendulum masses 18, 20 are pressed toward one another.
- the coupling spring 22 engages with a spring force 34 on the Operapendelmassen 18, 20 in order to move the Generalpendelmassen 18, 20 apart, so that the tangential portion of the centrifugal force 32 of the spring force 34 of the coupling spring 22 is directed opposite.
- the sub-pendulum masses 18, 20 thereby assume a relative position to each other, which results from the equilibrium of forces between the tangential portion of the centrifugal force 32 and the spring force 34 of the coupling spring 22.
- the centrifugal force 32 is small at a low rotational speed, so that the partial pendulum masses 18, 20 are pressed far apart from the spring force 34 of the coupling spring 22.
- the mass centers of gravity 28, 30 of the sub-pendulum masses 18, 20 are thus located at a smaller radius to the axis of rotation 12.
- a total mass center 36 of the pendulum mass 16 composed of the sub-pendulum masses 18, 20 and the coupling spring 22 is arranged at a smaller radius to the axis of rotation 12.
- Pivot point which coincides in the illustrated embodiment with the common pendulum axis of the sub-pendulum masses 18, 20, is characterized comparatively short.
- the centrifugal force 32 overcome a part of the spring force 34 of the coupling spring 22, so that the partial pendulum masses 18, 20 approach.
- mass centers of gravity 28, 30 of the partial pendulum masses 18, 20 and thus also the total mass center of gravity 36 of the pendulum mass 16 shift to a larger radius. Since the pivot point of the pendulum mass 16 does not shift but the total mass center of gravity 36 moves radially outwards, the pendulum length l increases.
- the partial pendulum masses 18, 20 can be arranged one behind the other in the axial direction, so that they can not strike against one another during pivoting.
- This also makes it possible for both part pendulum masses 18, 20 to be supported rotatably by means of a common bearing pin 38.
- the bearing bolt 38 can be held on an axial side facing away from the support flange 14 in a cover 40 connected to the support flange 14.
- the pendulum mass 16 can thereby be taken captively between the lid 40 and the support flange 14 and covered in the axial direction and protected against environmental influences.
- the support flange 14 engages around the pendulum mass 16 radially outward with the aid of a starter ring 42, so that the pendulum mass 16 can be received protected in a closed receiving space 44.
- the support flange 14 acts with its starter ring 42 as burst protection for the pendulum mass sixteenth
- the coupling spring 22 is configured as a torsion spring with protruding legs.
- the coupling spring 22 can thereby attack the sides of the partial pendulum masses 18, 20 facing away from one another. This makes it easier to compress the coupling spring 22 so far that the mass centers of gravity 28, 30 are arranged at maximum speed in the axial direction one behind the other, without the material of the coupling spring 22 such a close approach of the Operapendelmassen 18, 20 blocks.
- the coupling spring 22 may be attached to the bearing pin 38, so that the coupling spring is guided on the support flange 14. LIST OF REFERENCE NUMBERS
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112016005506.4T DE112016005506A5 (de) | 2015-12-03 | 2016-11-24 | Fliehkraftpendel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015224241.2A DE102015224241A1 (de) | 2015-12-03 | 2015-12-03 | Fliehkraftpendel |
DE102015224241.2 | 2015-12-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017092749A1 true WO2017092749A1 (de) | 2017-06-08 |
Family
ID=57629207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2016/200541 WO2017092749A1 (de) | 2015-12-03 | 2016-11-24 | Fliehkraftpendel |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE102015224241A1 (de) |
WO (1) | WO2017092749A1 (de) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0618380A1 (de) * | 1993-03-30 | 1994-10-05 | Hiroshi Matsuhisa | Dynamischer Schwingungsdämpfer für pendelförmige Konstruktionen (z.B. Seilbahngondel etc.) |
DE102009037481A1 (de) * | 2008-09-18 | 2010-03-25 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Drehzahladaptiver Tilger, insbesondere Fliehkraftpendeleinrichtung |
DE102010028849A1 (de) * | 2010-05-11 | 2011-11-17 | Zf Friedrichshafen Ag | Schwingungstilger |
DE102011004443A1 (de) * | 2011-02-21 | 2012-08-23 | Zf Friedrichshafen Ag | Schwingungsdämpfungseinrichtung |
WO2015043591A1 (de) | 2013-09-26 | 2015-04-02 | Schaeffler Technologies AG & Co. KG | Fliehkraftpendeleinrichtung |
US20150101451A1 (en) * | 2013-10-11 | 2015-04-16 | Zf Friedrichshafen Ag | Torsional Vibration Deletion Means as well as Torsional Vibration Damper for a Vehicle Drive-Line |
-
2015
- 2015-12-03 DE DE102015224241.2A patent/DE102015224241A1/de not_active Withdrawn
-
2016
- 2016-11-24 WO PCT/DE2016/200541 patent/WO2017092749A1/de active Application Filing
- 2016-11-24 DE DE112016005506.4T patent/DE112016005506A5/de not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0618380A1 (de) * | 1993-03-30 | 1994-10-05 | Hiroshi Matsuhisa | Dynamischer Schwingungsdämpfer für pendelförmige Konstruktionen (z.B. Seilbahngondel etc.) |
DE102009037481A1 (de) * | 2008-09-18 | 2010-03-25 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Drehzahladaptiver Tilger, insbesondere Fliehkraftpendeleinrichtung |
DE102010028849A1 (de) * | 2010-05-11 | 2011-11-17 | Zf Friedrichshafen Ag | Schwingungstilger |
DE102011004443A1 (de) * | 2011-02-21 | 2012-08-23 | Zf Friedrichshafen Ag | Schwingungsdämpfungseinrichtung |
WO2015043591A1 (de) | 2013-09-26 | 2015-04-02 | Schaeffler Technologies AG & Co. KG | Fliehkraftpendeleinrichtung |
US20150101451A1 (en) * | 2013-10-11 | 2015-04-16 | Zf Friedrichshafen Ag | Torsional Vibration Deletion Means as well as Torsional Vibration Damper for a Vehicle Drive-Line |
Also Published As
Publication number | Publication date |
---|---|
DE112016005506A5 (de) | 2018-10-04 |
DE102015224241A1 (de) | 2017-06-08 |
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