WO2013010523A1 - Bogenfedersystem für ein zweimassenschwungrad - Google Patents
Bogenfedersystem für ein zweimassenschwungrad Download PDFInfo
- Publication number
- WO2013010523A1 WO2013010523A1 PCT/DE2012/000654 DE2012000654W WO2013010523A1 WO 2013010523 A1 WO2013010523 A1 WO 2013010523A1 DE 2012000654 W DE2012000654 W DE 2012000654W WO 2013010523 A1 WO2013010523 A1 WO 2013010523A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spring
- bow spring
- additional
- bow
- starting
- 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.)
- Ceased
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
- F16F15/12—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
- F16F15/133—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 using springs as elastic members, e.g. metallic springs
- F16F15/134—Wound springs
- F16F15/13469—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations
- F16F15/13476—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates
- F16F15/13484—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates acting on multiple sets of springs
- F16F15/13492—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates acting on multiple sets of springs the sets of springs being arranged at substantially the same radius
-
- 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
- F16F15/121—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 using springs as elastic members, e.g. metallic springs
- F16F15/123—Wound springs
- F16F15/12353—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations
- F16F15/1236—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates
- F16F15/12366—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates acting on multiple sets of springs
- F16F15/12373—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates acting on multiple sets of springs the sets of springs being arranged at substantially the same radius
Definitions
- the invention relates to a bow spring system for a dual-mass flywheel, with the aid of which torsional vibrations, for example, a crankshaft of an automotive engine can be damped.
- a high torque can already be generated in a lower speed range of, for example, 1000 rpm to 1500 rpm, which leads to a sharp increase in the torque from the idling speed.
- a dual-mass flywheel connected to a drive shaft of the motor vehicle engine is subjected to increased requirements for damping torsional vibrations generated by the engine combustion of the motor vehicle engine so that a bow spring system of the dual-mass flywheel can damp torsional vibrations over a sufficiently large rotational angle range even at high torques.
- the illustrated in Fig. 1 bow spring system 10 has an outer spring 12 and two identical inner springs 14, which can be compressed simultaneously to compensate for torsional vibrations.
- this bow spring system 10 leads to the very stiff first spring characteristic curve 16 shown in FIG. 5, which makes it difficult to start the engine of the motor vehicle engine.
- a clearance angle 18 is provided between the identically designed inner springs 14, so that there is a two-stage curve for the associated shown in Fig. 5 second spring characteristic 20, since initially only the comparatively soft outer spring 12 is effective before the very stiff inner springs 14 become effective.
- the second spring characteristic 20 is also very stiff in the result and makes an engine start of the motor vehicle engine difficult.
- the inner springs 14 are designed with different stiffness compared to the bow spring system shown in Fig. 2, so that the third spring characteristic 22 shown in FIG. 5 results.
- the third spring characteristic 22 has a three-stage course, since initially only the outer spring 12, then the outer spring 12 and the two inner springs and at the end only the outer spring and one of the inner springs 14 are effective because
- a bow spring system for a dual mass flywheel for torsional vibration damping in particular a drive shaft of a motor vehicle engine, provided with a start bow spring for torsional vibration damping, a parallel to the start bow spring connected first additional bow spring for torsional vibration damping and a parallel to the start bow spring connected second additional bow spring for torsional vibration damping, the second additional bow spring in series to the first additional bow spring is connected, according to the invention, the starting bow spring has a spring stiffness D s , which is less than the spring stiffness of the first additional bow spring and less than the spring stiffness D 2 of the second additional bow spring, wherein when compressing the bow spring system over a total spring travel S ges, the second additional bow spring before the first additional bow spring and blocked before the start bow spring.
- the bow spring system can provide a significantly increased spring stiffness for the bow spring system with blocked second additional bow spring, so that the bow spring system can exert a damping function even at high torques.
- the bow spring system can provide a particularly low spring stiffness for the bow spring system by the parallel connection of the starting bow spring and the series-connected additional bow springs at the beginning of the spring travel, since both the start bow spring, the first additional bow spring and the second additional bow spring can be compressed.
- the starting bow spring has a lower spring stiffness than respectively the first additional bow spring and the second additional bow spring, a particularly long spring deflection and thus a particularly large twist angle of the associated dual mass flywheel can be achieved by means of the starting bow spring. This makes it possible to dampen and filter out torsional vibration over a particularly large frequency range.
- the start bow spring is effective especially from the beginning of the swept spring travel.
- the auxiliary bow springs are also preferably substantially effective from the beginning of the swept spring travel, wherein the additional bow springs, if necessary, may be effective slightly later than the starting bow spring, if necessary.
- the functionality of the bow spring system to allow easy starting of the motor vehicle engine and to provide a damping effect even at high torques is not significantly affected.
- the starting bow spring, the first additional bow spring and / or the second additional bow spring are in particular bent along a partial circle, so that the starting bow spring, the first additional bow spring and / or the second additional bow spring can be inserted particularly easily into a circumferentially extending pocket of a dual-mass flywheel to engage at the bow spring system attacking primary pulley on the bow spring system with an attacking on the bow spring system secondary pulley of the dual mass flywheel.
- the bow spring system is in particular a two-stage Provided spring characteristic that can be achieved without large tolerance requirements.
- the bow spring system can have a spring characteristic with a starting stage which not only achieves a lowering of a resonance speed of the drive shaft but also prefilters a larger frequency range of torsional vibration for a downstream centrifugal force spring for torsional vibration damping.
- a second stage of the spring characteristic can be provided, which can provide a steeper spring characteristic than during the starting stage until a maximum contact torque is reached, up to which damping of torsional vibrations by the bow spring system is possible.
- the spring stiffness Di of the first auxiliary bow spring is greater than that
- Spring stiffness D 2 of the second additional bow spring and / or the relaxed spring length Li of the first additional bow spring is greater than the relaxed spring length L 2 of the second additional bow spring. This can ensure that the second additional bow spring is blocked before the first additional bow spring and thereby switched off. If the second supplemental bow spring is softer than the first supplemental bowed spring, the second supplemental bowed spring retracts a greater spring deflection at an attacking force and can thereby reach the end of its compressibility faster than the first supplemental bowed spring. If the second additional bow spring is shorter than the first additional bow spring, the maximum possible spring travel of the second additional bow spring can be achieved earlier with an attacking force than with the first additional bow spring.
- the first auxiliary bow spring and the second additional bow spring are arranged radially within the starting bow spring.
- the space requirement can be kept low.
- the start bow spring can protect the first additional bow spring and the second supplementary bow spring, for example, against contamination.
- the additional bow springs can thereby have a substantially constant behavior even with low tolerance requirements over the life of the bow spring system.
- the first additional bow spring is mounted on a first end of the starting bow spring and the second supplementary bow spring is attached on a second end of the starting bow spring.
- the start bow spring, the first additional bow spring and the second additional bow spring are configured as a spiral spring, wherein the first additional bow spring and / or the second auxiliary bow spring is connected to one of the last turns of the associated end of the starting bow spring.
- the starting bow spring has a relaxed spring length L S1
- the first additional bow spring has a relaxed spring length Li
- the second supplementary bow spring has a relaxed spring length L 2 , where + L 2 + AL T -SL s , where AL T is a safety tolerance , which takes into account in particular manufacturing tolerances, installation tolerances and / or operational changes in the spring length.
- AL T is a safety tolerance , which takes into account in particular manufacturing tolerances, installation tolerances and / or operational changes in the spring length.
- AL T is a safety tolerance
- the additional bow springs can be in total in something as long as the starting bow spring or slightly shorter, which can be ensured by providing the safety tolerance that the space requirement of the bow spring system is defined in the spring direction solely by the start bow spring. Double fits and narrow tolerance fields are avoided, so that the bow spring system can be manufactured according to cost.
- Such a selected safety tolerance allows easy starting of the motor vehicle engine and with low tolerance requirements, even at high torques to provide a damping effect.
- the spring stiffness D s of the starting bow spring the spring stiffness Di of the first additional bow spring and / of the spring stiffness D 2 of the second additional bow spring D s £ 0.75 Di, in particular D s ⁇ 0.50 Di, preferably D s ⁇ 0, 30 Di and particularly preferably D s s 0.20 Di and / or D s -S 0.75 D 2 , in particular D s ⁇ 0.50 D 2 , preferably
- the starting bow spring can thereby have a significantly lower spring stiffness than the respective additional bow springs, so that a particularly long spring deflection and a correspondingly large twist angle of an associated dual-mass flywheel can be provided in order to damp torsional vibrations over a particularly large frequency range.
- the total spring travel S ges is achieved with an introduced into the bow spring system torque of M max , wherein the second additional bow spring at a torque M B iock blocked, where for the ratio M B iock / ma) ( 0.50 s ⁇ , 0.95, especially 0.60 ⁇ M B Jock / M max £ 0.85, preferably 0.65 M B ⁇ 0 M max £ 0.80 and particularly preferably 0.70 £ £ 0.75 applies Meiock Mmax ,
- the invention further relates to a dual-mass flywheel for torsional vibration damping, in particular a crankshaft of a motor vehicle engine, with a primary pulley for introducing a torque and a bow spring system, which can be off and on as described above, with the primary pulley circumferentially relative to the primary pulley rotatably connected secondary pulley ,
- This allows a cost-effective damping of torsional vibrations of motor vehicle engines, in particular with the help of a turbocharger supercharged motor vehicle engines, and at the same time a simple starting of the motor vehicle engine.
- a centrifugal pendulum for torsional vibration damping is provided. Due to the bow spring system of the dual-mass flywheel, a large part of the nonuniformities occurring in the torque can already be prefiltered for the centrifugal pendulum, so that the centrifugal pendulum can dampen corresponding torsional vibrations which are correspondingly simpler.
- the centrifugal pendulum can be designed for the damping of higher-order resonance vibrations.
- the centrifugal pendulum for example, connected to the primary pulley or the secondary pulley of the dual mass flywheel.
- Fig. 1 a schematic schematic diagram of a bow spring system in a first
- 2 is a schematic diagram of a bow spring system in a second embodiment
- FIG. 3 is a schematic diagram of a bow spring system in a third
- Fig. 4 is a schematic diagram of a bow spring system in a fiction, contemporary embodiment
- the illustrated in Fig. 4 bow spring system 10 has a designed as an outer spring starting bow spring 22, to the radially inner coaxial with the starting bow spring 22 in series connected in series, a first additional bow spring 24 and a second additional bow spring 24 are arranged.
- the first auxiliary bow spring 24 may be mounted on a first end 28.
- the second auxiliary bow spring 26 may be mounted at a second end 30.
- the bow spring system 10 can be used as energy storage element for a dual mass flywheel to dampen torsional vibrations without large energy losses.
- the first additional bow spring 24 in the illustrated relaxed state a length L-, which is longer than the length L 2 of the second additional bow spring 26, so that the second additional bow spring 26 can go to block rather than the first additional bow spring 24.
- a safety tolerance AL T provided to compensate for tolerances and functional changes. Due to the low spring stiffness of the bow spring system 10 at the beginning of a swept spring travel S or a corresponding ü- swept rotation angle ⁇ of the corresponding dual mass flywheel and the higher spring stiffness of the bow spring system 10 with blocking second auxiliary spring 26, for example, the spring characteristic 32 shown in FIG.
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
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112012003009.5T DE112012003009A5 (de) | 2011-07-18 | 2012-06-28 | Bogenfedersystem für ein Zweimassenschwungrad |
| CN201280035107.9A CN103765038B (zh) | 2011-07-18 | 2012-06-28 | 用于双质量飞轮的弓形弹簧系统以及双质量飞轮 |
| EP12745999.8A EP2734746A1 (de) | 2011-07-18 | 2012-06-28 | Bogenfedersystem für ein zweimassenschwungrad |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011079309 | 2011-07-18 | ||
| DE102011079309.7 | 2011-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013010523A1 true WO2013010523A1 (de) | 2013-01-24 |
Family
ID=46650285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2012/000654 Ceased WO2013010523A1 (de) | 2011-07-18 | 2012-06-28 | Bogenfedersystem für ein zweimassenschwungrad |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2734746A1 (de) |
| CN (1) | CN103765038B (de) |
| DE (2) | DE112012003009A5 (de) |
| WO (1) | WO2013010523A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014205770A1 (de) | 2014-03-27 | 2015-10-01 | Schaeffler Technologies AG & Co. KG | Verfahren zur Verstellung von Steuerzeiten einer Brennkraftmaschine |
| DE102014210449A1 (de) * | 2014-06-03 | 2015-12-03 | Schaeffler Technologies AG & Co. KG | Torsionsschwingungsdämpfer, Verfahren zum Auslegen eines Torsionsschwingungsdämpfers,sowie Drehmomentübertragungseinrichtung |
| DE102014218926A1 (de) * | 2014-09-19 | 2016-03-24 | Zf Friedrichshafen Ag | Drehschwingungsdämpfer und Anfahrelement |
| DE102021204585A1 (de) | 2021-05-06 | 2022-11-10 | Zf Friedrichshafen Ag | Hybridgetriebe mit linearer Federkennlinie, Fahrzeug, Anlassverfahren und Steuergerät |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2829819A1 (fr) * | 2001-09-17 | 2003-03-21 | Luk Lamellen & Kupplungsbau | Amortisseur d'oscillations de rotation |
| FR2851313A1 (fr) * | 2003-02-14 | 2004-08-20 | Luk Lamellen & Kupplungsbau | Amortisseur d'oscillations tournantes |
| DE102010054296A1 (de) * | 2009-12-22 | 2011-06-30 | Schaeffler Technologies GmbH & Co. KG, 91074 | Drehmomentübertragungseinrichtung |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1865222A1 (de) * | 2006-06-10 | 2007-12-12 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Fliehkraftpendeleinrichtung |
| JP5675363B2 (ja) * | 2007-11-29 | 2015-02-25 | シェフラー テクノロジーズ アクチエンゲゼルシャフト ウント コンパニー コマンディートゲゼルシャフトSchaeffler Technologies AG & Co. KG | 特に駆動機械と被駆動部との間の出力伝達のための動力伝達装置 |
| DE102009024217A1 (de) * | 2008-06-16 | 2009-12-17 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Doppelkupplung mit Drehschwingungsdämpfer |
-
2012
- 2012-06-28 WO PCT/DE2012/000654 patent/WO2013010523A1/de not_active Ceased
- 2012-06-28 DE DE112012003009.5T patent/DE112012003009A5/de not_active Ceased
- 2012-06-28 DE DE102012211093A patent/DE102012211093A1/de not_active Withdrawn
- 2012-06-28 EP EP12745999.8A patent/EP2734746A1/de not_active Withdrawn
- 2012-06-28 CN CN201280035107.9A patent/CN103765038B/zh not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2829819A1 (fr) * | 2001-09-17 | 2003-03-21 | Luk Lamellen & Kupplungsbau | Amortisseur d'oscillations de rotation |
| FR2851313A1 (fr) * | 2003-02-14 | 2004-08-20 | Luk Lamellen & Kupplungsbau | Amortisseur d'oscillations tournantes |
| DE102010054296A1 (de) * | 2009-12-22 | 2011-06-30 | Schaeffler Technologies GmbH & Co. KG, 91074 | Drehmomentübertragungseinrichtung |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112012003009A5 (de) | 2014-04-10 |
| EP2734746A1 (de) | 2014-05-28 |
| CN103765038A (zh) | 2014-04-30 |
| DE102012211093A1 (de) | 2013-01-24 |
| CN103765038B (zh) | 2016-03-30 |
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