WO2015021970A1 - Pendule centrifuge - Google Patents

Pendule centrifuge Download PDF

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Publication number
WO2015021970A1
WO2015021970A1 PCT/DE2014/200333 DE2014200333W WO2015021970A1 WO 2015021970 A1 WO2015021970 A1 WO 2015021970A1 DE 2014200333 W DE2014200333 W DE 2014200333W WO 2015021970 A1 WO2015021970 A1 WO 2015021970A1
Authority
WO
WIPO (PCT)
Prior art keywords
pendulum
pairings
distance
centrifugal
masses
Prior art date
Application number
PCT/DE2014/200333
Other languages
German (de)
English (en)
Inventor
Uli Junker
Hartmut Mende
Original Assignee
Schaeffler Technologies Gmbh & 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 Schaeffler Technologies Gmbh & Co. Kg filed Critical Schaeffler Technologies Gmbh & Co. Kg
Priority to EP14750433.6A priority Critical patent/EP3033543A1/fr
Priority to CN201480043692.6A priority patent/CN105452712B/zh
Priority to DE112014003743.5T priority patent/DE112014003743A5/de
Publication of WO2015021970A1 publication Critical patent/WO2015021970A1/fr

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
    • F16F15/145—Masses mounted with play with respect to driving means thus enabling free movement over a limited range

Definitions

  • the invention relates to a centrifugal pendulum with a rotatable about a rotation axis pendulum with several distributed over the circumference in a plane of rotation pendulum pendulum masses with a predetermined first distance between the axis of rotation and a pendulum point about which a center of gravity of a pendulum mass is arranged pendulum, and a predetermined second distance between the pendulum point and the center of gravity of a pendulum mass.
  • Centrifugal pendulum used for themselves or in combination with other vibration damping devices such as torsional vibration dampers isolation of torsional vibrations in particular in powertrains of motor vehicles with torsional vibration-sensitive internal combustion engines.
  • torsional vibration damper with a generic centrifugal pendulum.
  • the centrifugal pendulum is added to rotate about a rotation axis.
  • a pendulum carries circumferentially distributed pendulum masses, which are suspended in a plane of rotation around the axis of rotation pendulum on a pendulum.
  • a pendulum motion of the pendulum masses with respect to the pendulum is specified in the centrifugal force field with rotating pendulum, which corresponds to a pendulum with a predetermined thread length with a predetermined distance between a pendulum point of gravity of a pendulum mass and the center of gravity and a predetermined distance of the pendulum point of the axis of rotation.
  • the centrifugal pendulum is set to a vibration order of the torsional vibrations, for example, the internal combustion engine.
  • the vibration order in an internal combustion engine with four cylinders and 4-stroke principle is equal to one.
  • Modern internal combustion engines can have a plurality of vibration orders if, for example, in given operating states, a part of the cylinders is switched off.
  • a drive train is known in which a plurality of different vibration orders of an internal combustion engine tuned centrifugal pendulum are arranged.
  • the object of the invention is the advantageous development of a centrifugal pendulum for the eradication of several vibration orders, in particular for optimal utilization of an available space.
  • the proposed centrifugal pendulum contains a pendulum flange rotatable about a rotation axis.
  • the pendulum flange may be attached to a flywheel of an internal combustion engine, such as a compound flywheel, a primary or secondary flywheel of a dual mass flywheel, a clutch or friction clutch housing, outside or inside a wet clutch or hydrodynamic torque converter, a rotor of an electric machine of a hybrid powertrain, or other be associated with a rotatable component about a rotation axis.
  • a flywheel of an internal combustion engine such as a compound flywheel, a primary or secondary flywheel of a dual mass flywheel, a clutch or friction clutch housing, outside or inside a wet clutch or hydrodynamic torque converter, a rotor of an electric machine of a hybrid powertrain, or other be associated with a rotatable component about a rotation axis.
  • a flywheel of an internal combustion engine such as a compound flywheel, a primary or secondary flywheel of
  • the pendulum masses are preferably formed by pendulum mass elements arranged on both sides of the pendulum flange, wherein axially opposite pendulum mass elements are interconnected by means of recesses in the pendulum flange by means of connecting or spacing means.
  • the pendulum masses are added to the pendulum flange according to a bifilar suspension.
  • the receptacle can be provided according to a bifilar suspension with parallel or trapezoidal arranged threads.
  • the pendulum masses are arranged on the pendulum with a predetermined first distance between the axis of rotation and a pendulum point, each oscillating about the center of gravity of a pendulum mass.
  • a predetermined second distance between the pendulum point and the center of gravity of a pendulum mass in the sense of a thread length is provided.
  • the second distance is dependent on at least two different to be killed vibration orders of a torsional vibration-sensitive torque source, such as an internal combustion engine set changeable.
  • the second distance may be variably adjustable depending on a rotational speed of the pendulum flange and thus, for example, on the rotational speed of a crankshaft of an internal combustion engine and the like.
  • the centrifugal pendulum can be set in each case to a dominant in a given speed range vibration order.
  • a centrifugal pendulum easily trained in this way is tuned in a preferred manner to two vibration orders, for example, a vibration order equal to 1 for an internal combustion engine with four cylinders in four-stroke operation and a vibration order 0.5 in an operation with two cylinders.
  • the proposed centrifugal pendulum can be tuned to different vibration orders by the first distance is designed to be adjustable depending on at least two different to be killed vibration orders and / or speeds of the pendulum.
  • the displacement of the pendulum point of the pendulum masses with respect to the axis of rotation can be made a further adaptation to vibration orders.
  • an adjustment of the vibration orders takes place by changing both distances.
  • a corresponding Tilger angel q be specified.
  • a sum of the two distances L (n , z), l (n, z) is set independently of a vibration order and / or rotational speed. This means that a maximum diameter of the pendulum masses remains constant, regardless of which of the Tilgerowskien is set to the vibration order of an internal combustion engine. For example, a ratio of the first distance to the second distance in a first order of vibration 4 and in a second order of oscillation 1.
  • the first distance L (n , z) between the axis of rotation and the pendulum point is four times the second distance l (n , z) between pendulum point and center of gravity.
  • the two distances L (n , z), l ⁇ n, z) may be the same.
  • Pendulum masses in each case in the circumferential direction include the center of gravity of the pendulum masses irrigate, complementary to each other, the second distances predetermining, career pairings forming tracks provided with predetermined curvature on this rolling and receiving the pendulum masses relative to the pendulum flange rolling elements. Due to the formation of different curvatures of the track pairings of the pendulum masses and the pendulum complementary to each other trained raceways for the respective common rolling elements different second distances, ie in the sense of a thread pendulum different long thread lengths are formed. In this way, different vibration orders come about, depending on the setting of a desired order of vibration, a corresponding curvature of the raceways is adjusted. In this case, preferably at least two and preferably two adjustable second distances from the rolling elements at least two and preferably two effective for the rolling elements switchable career pairings are provided with different curvature for at least two and preferably.
  • raceway pairings with the slightest curvature can be arranged radially fixed in the pendulum and in the pendulum masses, as they do not interfere with career pairings with greater curvature, since the rolling elements roll only on the raceways with greater curvature.
  • the raceway pairings with respect to the raceway pairings with the smallest curvature larger bends are arranged switchable with respect to these in the pendulum and the pendulum masses. If the rolling elements are to roll on the raceways with the least curvature, the other raceways are removed from the access of the rolling elements.
  • a displacement device for example, an externally controlled or, for example, within the centrifugal pendulum pendulum, for example, depending on the centrifugal effective actuator for the controlled displacement of the raceway pairings with greater curvature than the slightest curvature depending on the vibration order of a registered in the pendulum oscillation and / or the speed of the pendulum is provided.
  • the raceway pairings may be nested axially next to each other or radially nested.
  • a displacement of the raceway pairings with larger curvatures can be provided in the radial direction, wherein a radial displacement of the raceways of the pendulum masses radially inward and a displacement of the raceways of the pendulum can be provided radially outward.
  • Figure 1 is a schematic representation of a centrifugal pendulum in a first
  • FIG. 2 shows the centrifugal pendulum of Figure 1 in a second setting for the compensation of oscillations of a second order of vibration.
  • FIGS 1 and 2 show a part of the centrifugal pendulum 1 in a schematic view.
  • the centrifugal pendulum 1 has the only indicated pendulum 2, which is arranged rotatable about the axis of rotation d.
  • On the pendulum flange 2 are arranged in a plane of rotation about the axis of rotation d a plurality of circumferentially arranged on both sides of the pendulum 2, preferably equal parts pendulum mass elements 3 oscillating pendulum masses formed 4, wherein two axially opposite pendulum masses 3 with each other by means of the pendulum 2 by corresponding recesses Connecting means are connected and spaced.
  • pendulum masses 4 only one is shown.
  • the pendulum masses 4 are suspended in each case by means of two bearings 5 enclosing the center of gravity S pendulum on the pendulum flange 2.
  • the bearings 5 are each formed of two raceway pairs 6, 7, each with two raceways 8, 9, 10, 1 1.
  • the raceways 8, 9 are provided in the pendulum flange 2 and the raceways 10, 1 1 in two pendulum mass elements 3 of the pendulum masses 4.
  • a rolling element 12 for example, from a role of the complementarily trained raceways 8, 9, 10, 1 1 passes through, so that the pendulum masses 4 under centrifugal force the pendulum flange 2 are held.
  • the raceways 8, 9, 10, 1 1 are arcuately provided with curvatures, so that the pendulum masses 4 are received in the sense of a pendulum thread 2 swing pendulum on the pendulum.
  • Drehschwingungstilger in the centrifugal force field of the rotating pendulum 2-based properties are in addition to the masses of the pendulum masses 4 in the first distance L (n, z ) between the rotation axis d and the pendulum point P to which the center of gravity S of the pendulum masses 4 oscillates, and the second distance l (n, z ) , which corresponds to the thread length of the pendulum masses between the pendulum point P and the center of gravity S.
  • the second distance l ( n , z ) results from the curvature of the raceways 8, 9, 10, 1 1 of the raceway pairings 6, 7, so that can be adjusted by different set curvatures of the raceway pairings 6, 7 different vibration orders on the centrifugal pendulum 1.
  • the first distance can also be correspondingly shortened when the second distance l (n, z ) is extended.
  • the raceway pairings 7 with the raceways 9, 1 1 out of force since at radially same height arranged raceways 8, 9 10, 1 1, the rolling elements 12 always roll on the larger bends.
  • the raceway pairings 7 with the slight curvature can therefore be taken up firmly in the pendulum masses 4 and in the pendulum flange 2, while the raceway pairings 6 have to be removed for activating the career pairings 7 from their effective range.

Landscapes

  • 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

L'invention concerne un pendule centrifuge (1) comprenant un flasque (2) apte à tourner autour d'un axe de rotation (d) et muni de plusieurs masses pendulaires (4) agencées de manière réparties sur son pourtour de façon à effectuer un mouvement pendulaire dans un plan de rotation, l'axe de rotation et un point d'oscillation (P), autour duquel un centre de gravité (S) d'une masse pendulaire (4) est placé de façon à effectuer un mouvement pendulaire, étant situés à une première distance prédéfinie (L) l'un de l'autre, et le point d'oscillation (P) et le centre de gravité (S) d'une masse pendulaire (4) étant situés à une seconde distance prédéfinie (I) l'un de l'autre. Le but de l'invention est de pouvoir amortir de manière efficace des vibrations de plusieurs ordres à l'aide des mêmes masses pendulaires (4). A cet effet, la seconde distance (I) est réglée de façon modifiable en fonction d'au moins deux différents ordres de vibrations à amortir et/ou deux différentes vitesses der rotation du flasque (2).
PCT/DE2014/200333 2013-08-13 2014-07-18 Pendule centrifuge WO2015021970A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP14750433.6A EP3033543A1 (fr) 2013-08-13 2014-07-18 Pendule centrifuge
CN201480043692.6A CN105452712B (zh) 2013-08-13 2014-07-18 离心力摆
DE112014003743.5T DE112014003743A5 (de) 2013-08-13 2014-07-18 Fliehkraftpendel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013215974.9 2013-08-13
DE102013215974 2013-08-13

Publications (1)

Publication Number Publication Date
WO2015021970A1 true WO2015021970A1 (fr) 2015-02-19

Family

ID=51302877

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2014/200333 WO2015021970A1 (fr) 2013-08-13 2014-07-18 Pendule centrifuge

Country Status (4)

Country Link
EP (1) EP3033543A1 (fr)
CN (1) CN105452712B (fr)
DE (2) DE102014214044A1 (fr)
WO (1) WO2015021970A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015149783A1 (fr) * 2014-04-02 2015-10-08 Schaeffler Technologies AG & Co. KG Pendule centrifuge
EP3085990A1 (fr) * 2015-04-23 2016-10-26 Schaeffler Technologies AG & Co. KG Pendule centrifuge
DE102016217363A1 (de) 2016-09-13 2018-03-15 Schaeffler Technologies AG & Co. KG Fliehkraftpendeleinrichtung
DE102016124827A1 (de) 2016-12-19 2018-06-21 Schaeffler Technologies AG & Co. KG Fliehkraftpendeleinrichtung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015211618A1 (de) 2015-06-23 2016-12-29 Schaeffler Technologies AG & Co. KG Fliehkraftpendel
DE102018103612A1 (de) * 2017-03-22 2018-09-27 Schaeffler Technologies AG & Co. KG Fliehkraftpendeleinrichtung
DE102017213309A1 (de) * 2017-08-01 2019-02-07 Zf Friedrichshafen Ag Tilgersystem
DE102019121204A1 (de) 2019-02-27 2020-08-27 Schaeffler Technologies AG & Co. KG Torsionsschwingungsdämpfer mit einer Rotationsachse für einen Antriebsstrang

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205401A (en) * 1939-05-13 1940-06-25 William L Fischer Torsional vibration damper
DE10331391A1 (de) * 2003-07-11 2005-02-10 Adam Opel Ag Schwungrad
DE102010028849A1 (de) * 2010-05-11 2011-11-17 Zf Friedrichshafen Ag Schwingungstilger
DE102011087631A1 (de) 2010-12-23 2012-06-28 Schaeffler Technologies Gmbh & Co. Kg Geräuschreduzierter Drehschwingungsdämpfer
DE102012217170A1 (de) 2011-10-18 2013-04-18 Schaeffler Technologies AG & Co. KG Antriebsstrang mit Fliehkraftpendel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0922684B1 (pt) * 2008-12-08 2020-10-27 Schaeffler Technologies AG & Co. KG conjunto amortecedor com pêndulo centrífugo

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2205401A (en) * 1939-05-13 1940-06-25 William L Fischer Torsional vibration damper
DE10331391A1 (de) * 2003-07-11 2005-02-10 Adam Opel Ag Schwungrad
DE102010028849A1 (de) * 2010-05-11 2011-11-17 Zf Friedrichshafen Ag Schwingungstilger
DE102011087631A1 (de) 2010-12-23 2012-06-28 Schaeffler Technologies Gmbh & Co. Kg Geräuschreduzierter Drehschwingungsdämpfer
DE102012217170A1 (de) 2011-10-18 2013-04-18 Schaeffler Technologies AG & Co. KG Antriebsstrang mit Fliehkraftpendel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015149783A1 (fr) * 2014-04-02 2015-10-08 Schaeffler Technologies AG & Co. KG Pendule centrifuge
EP3085990A1 (fr) * 2015-04-23 2016-10-26 Schaeffler Technologies AG & Co. KG Pendule centrifuge
DE102016217363A1 (de) 2016-09-13 2018-03-15 Schaeffler Technologies AG & Co. KG Fliehkraftpendeleinrichtung
DE102016124827A1 (de) 2016-12-19 2018-06-21 Schaeffler Technologies AG & Co. KG Fliehkraftpendeleinrichtung

Also Published As

Publication number Publication date
EP3033543A1 (fr) 2016-06-22
DE112014003743A5 (de) 2016-05-19
CN105452712B (zh) 2017-06-30
CN105452712A (zh) 2016-03-30
DE102014214044A1 (de) 2015-02-19

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