WO2011124202A1 - Geteiltes schwungrad - Google Patents
Geteiltes schwungrad Download PDFInfo
- Publication number
- WO2011124202A1 WO2011124202A1 PCT/DE2011/000322 DE2011000322W WO2011124202A1 WO 2011124202 A1 WO2011124202 A1 WO 2011124202A1 DE 2011000322 W DE2011000322 W DE 2011000322W WO 2011124202 A1 WO2011124202 A1 WO 2011124202A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flywheel
- pendulum
- split
- masses
- coupled
- 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
Definitions
- the invention relates to a split flywheel with two mutually limited against the action of at least one energy storage rotatable flywheel masses, one of the flywheel masses as effectively connected to a crankshaft of an internal combustion engine input part and the other flywheel is formed as connectable to a transmission component output part.
- split flywheels with a spring device which acts in the circumferential direction and which contains bow springs, for example, are well known from the prior art.
- the bow springs are used during an occurrence of torsional vibrations as a buffer for the torque peaks by the input side, primary flywheel relative to the output side, secondary flywheel relatively twisted and the bow springs are compressed.
- the torque peak fades, the energy stored in the bow springs is released again, resulting in a torque curve transmitted across the split flywheel, smoothed by latching the torque peaks and shifting them to smaller torque values.
- the bow springs are accelerated radially outward, so that their turns are supported radially on the outside under friction.
- the friction moments formed lead to a partial elimination of spring coils with an increase in the overall stiffness of the spring device as well as to load blows.
- the lubrication of the frictional contact between the spring coils of the bow springs and these radially supporting components preferably the primary flywheel results in benefits.
- split flywheels they are - as known for example from DE 10 2006 028 556 A1 - combined with centrifugal pendulum, in which free pendulum limited pivotally on one of the two masses be arranged to achieve a speed-adaptive vibration damping.
- Still increasing maximum torques of modern internal combustion engines at low speeds require for temporary storage of torque peaks with high absolute torque at low speeds effective utilization of effective between the flywheel energy storage device.
- the object of the invention is the development of split flywheels, in particular against the background of increased transmittable torques at ever-decreasing speeds.
- the object is achieved by a split flywheel with two mutually limited against the action of at least one energy storage rotatable flywheel masses, one of the flywheel masses as effectively connected to a crankshaft of an internal combustion engine input part and the other flywheel formed as connectable to a transmission component output part and an energy storage of a under centrifugal force accelerated radially outward, articulated coupled with two masses pendulum is formed.
- a spring device for storing mechanical energy can be cached by the formation of a coupled pendulum in the centrifugal force energy contents of torque peaks of an internal combustion engine at least partially and effectively in the form of potential energy.
- the centrifugal force changes as a function of speed, and as a result the stiffness of the divided flywheel also changes as a function of engine speed. As the speed increases, therefore, the rigidity increases. This means that at higher speeds the split flywheel can transmit higher torques with the same angle of rotation of the flywheels and can cover a mean torque of modern internal combustion engines without resonance problems of the self-resonance of the split flywheel.
- the split flywheel has at least one further, free pendulum.
- This free pendulum can be arranged on the coupled pendulum with respect to this limited pivoting, which is effective as a centrifugal pendulum.
- Such a trained double pendulum of coupled and free pendulum can further increase the tunability as well as the effectiveness of a split flywheel.
- the coupled pendulum is pivotably arranged on the secondary flywheel and is connected by the primary flywheel. driven.
- a suspension point of the free pendulum may be arranged radially outside a suspension point of the coupled pendulum.
- a suspension point of the free pendulum can be arranged radially within a rotational drive of the coupled pendulum by the primary flywheel.
- a free pendulum can be arranged limitedly pivotable on one of the two flywheel masses.
- another means for storing energy such as a spring device with over Circumference distributed and effective in the circumferential direction spring elements such as coil springs are provided, which may be designed to be correspondingly soft in terms of their rigidity.
- the coupled pendulum or a double pendulum formed from a free pendulum and the coupled pendulum is advantageously formed to avoid imbalances of the divided flywheel from a plurality of circumferentially arranged, each arranged on a suspension pendulum masses.
- Such pendulum masses may be added to a swing mass in the circumferential direction limited pivotally and be taken separately or with appropriate coupling by means of a central hinge connection such as coupling rod of the other flywheel.
- the free pendulum may be formed of a plurality of circumferentially arranged pendulum masses which are suspended at each pendulum point.
- FIG. 1 shows a schematic representation of a divided flywheel with a double pendulum in the rest position
- Figure 2 shows the split flywheel of Figure 1 with interpreted double pendulum
- Figure 3 is a schematic representation of a split flywheel with additional spring means
- Figure 4 shows another split flywheel with a coupled pendulum and a
- Figure 1 shows a schematic representation of the split flywheel 1 with the primary flywheel 2 and the secondary flywheel 3, which are rotatably mounted on each other and limited to each other about the rotation axis 4 are rotatable.
- the coupled pendulum 6 is rotatably received as pivotable relative to the secondary flywheel 3 and coupled by means of the hinge joint 7 as coupling rod 8 at the pivot point 10 as pivot with the lever 9 of the primary flywheel 2 at the pivot point 11 as fulcrum.
- the free pendulum 13 is pivotally suspended from the pendulum 6.
- the split flywheel 1 is formed in a constructive embodiment so that the masses of the pendulum 6, 13 are distributed uniformly over the circumference and thus form no imbalance.
- the pendulum 6, 13 may be formed in pendulum parts with a plurality of pendulum masses distributed over the circumference.
- the masses are directed along the axis of rotation radially outward centrifugal force field, that is, the pendulum 6, 13 are aligned in line with maximum pendulum length radially outward.
- FIG 2 shows the divided flywheel 1 of Figure 1 under load with deflected pendulums 6, 13.
- the primary flywheel 2 is driven in the direction of arrow 14 with a torque
- the secondary flywheel 3 is loaded with a counter-torque.
- the flywheel masses 2, 3 are relatively rotated against each other and the pen, del 6, 13 deflected against the effective centrifugal force. They therefore store potential energy, which depends on the speed. If this is the primary flywheel 2 acting torque torsional vibration, in particular, the pendulum mass of the pendulum 13 acts as a centrifugal pendulum and eliminates corresponding torsional vibrations.
- the torque to be transmitted via the flywheel masses is essentially determined by the pendulum mass of the pendulum
- FIG. 3 shows a schematic representation of the divided flywheel 1a with the flywheels 2a, 3a, which are relatively rotatable relative to one another.
- the coupled pendulum 6a is pivotably arranged by means of the articulated connection 7a, which is entrained by the lever 9a at the hinge point 10a of the secondary flywheel 3a when the two masses are rotated against each other.
- the free pendulum 13a is received pivotably directly on the secondary flywheel 3a by means of the suspension point 12a.
- an additional energy storage in the form of circumferentially effective spring means 15 is arranged, which secures the elastic rotational drive of the secondary flywheel 3a against the primary flywheel 2a at very low speeds at not sufficiently trained centrifugal force.
- FIG. 4 shows a schematic representation of the split flywheel 1b with the primary flywheel 2b and the secondary flywheel 3b that is rotatable relative to the latter and counter to the effect of the spring device 15a corresponding to the spring device 15 of FIG.
- the coupled between the masses of inertia 2b, 3b arranged pendulum 6b and suspended respectively at the hinge points 5a, 11a with the respective masses 2b, 3b associated pendulum masses 16, 17 forms between these the suspension point 12b for the free pendulum 13b and takes this pivot according to the arrangement of Figure 1.
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
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112011101230T DE112011101230A5 (de) | 2010-04-06 | 2011-03-24 | Geteiltes Schwungrad |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010013969 | 2010-04-06 | ||
DE102010013969.6 | 2010-04-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011124202A1 true WO2011124202A1 (de) | 2011-10-13 |
Family
ID=44269282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2011/000322 WO2011124202A1 (de) | 2010-04-06 | 2011-03-24 | Geteiltes schwungrad |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE102011014934A1 (de) |
WO (1) | WO2011124202A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015058757A1 (de) * | 2013-10-24 | 2015-04-30 | Schaeffler Technologies AG & Co. KG | Drehschwingungsisolationseinrichtung |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2413614A (en) * | 2004-05-01 | 2005-11-02 | Safe Developments Ltd | A flywheel with pendulum masses tracking an order of vibration across engine speeds |
DE102006028556A1 (de) | 2005-07-11 | 2007-01-18 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Drehmomentübertragungseinrichtung |
DE102009037481A1 (de) * | 2008-09-18 | 2010-03-25 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Drehzahladaptiver Tilger, insbesondere Fliehkraftpendeleinrichtung |
DE102009012485A1 (de) * | 2009-03-12 | 2010-09-16 | Daimler Ag | Antriebsstrang für Hybridantriebe sowie Torsionsdämpfer |
-
2011
- 2011-03-24 WO PCT/DE2011/000322 patent/WO2011124202A1/de active Application Filing
- 2011-03-24 DE DE201110014934 patent/DE102011014934A1/de not_active Withdrawn
- 2011-03-24 DE DE112011101230T patent/DE112011101230A5/de not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2413614A (en) * | 2004-05-01 | 2005-11-02 | Safe Developments Ltd | A flywheel with pendulum masses tracking an order of vibration across engine speeds |
DE102006028556A1 (de) | 2005-07-11 | 2007-01-18 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Drehmomentübertragungseinrichtung |
DE102009037481A1 (de) * | 2008-09-18 | 2010-03-25 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Drehzahladaptiver Tilger, insbesondere Fliehkraftpendeleinrichtung |
DE102009012485A1 (de) * | 2009-03-12 | 2010-09-16 | Daimler Ag | Antriebsstrang für Hybridantriebe sowie Torsionsdämpfer |
Also Published As
Publication number | Publication date |
---|---|
DE102011014934A1 (de) | 2011-10-06 |
DE112011101230A5 (de) | 2013-01-24 |
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