WO2014161538A1 - KUPPLUNGSBETÄTIGUNGSSYSTEM ZUM ÖFFNEN UND/ODER SCHLIEßEN EINER REIBUNGSKUPPLUNG SOWIE VERFAHREN ZUM KUPPELN EINER ANTRIEBSWELLE EINES KRAFTFAHRZEUGMOTORS MIT EINER GETRIEBEEINGANGSWELLE EINES KRAFTFAHRZEUGGETRIEBES - Google Patents
KUPPLUNGSBETÄTIGUNGSSYSTEM ZUM ÖFFNEN UND/ODER SCHLIEßEN EINER REIBUNGSKUPPLUNG SOWIE VERFAHREN ZUM KUPPELN EINER ANTRIEBSWELLE EINES KRAFTFAHRZEUGMOTORS MIT EINER GETRIEBEEINGANGSWELLE EINES KRAFTFAHRZEUGGETRIEBES Download PDFInfo
- Publication number
- WO2014161538A1 WO2014161538A1 PCT/DE2014/200118 DE2014200118W WO2014161538A1 WO 2014161538 A1 WO2014161538 A1 WO 2014161538A1 DE 2014200118 W DE2014200118 W DE 2014200118W WO 2014161538 A1 WO2014161538 A1 WO 2014161538A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clutch
- ramp
- input
- pilot
- friction clutch
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
- F16D2023/123—Clutch actuation by cams, ramps or ball-screw mechanisms
Definitions
- Clutch actuating system for opening and / or closing a friction clutch and method for coupling a drive shaft of a motor vehicle engine with a
- the invention relates to a clutch actuation system for opening and / or closing a friction clutch and a method for coupling a drive shaft of a motor vehicle engine with a transmission input shaft of a motor vehicle transmission, with the aid of a friction clutch, in particular a starting clutch for shifting transmission gears of a motor vehicle transmission, can be actuated.
- the clutch actuation system includes an electromagnetically actuable pilot clutch coupled to a ball-ramp system.
- the electromagnetic pilot clutch is acted upon via an electromagnet with an actuating force acting in the closing direction of the pilot control clutch.
- the ramp of the ball-ramp system facing the pilot clutch is rotated, whereby the ramp facing the friction clutch is pushed away in the axial direction.
- the weggedschreibter ramp takes in the axial movement of a pressure plate for frictionally closing the friction clutch, whereby the friction clutch is closed.
- a clutch actuation system for opening and / or closing a friction clutch
- a ramp system for axially displacing a pressure plate of a friction clutch
- the ramp system has an input ramp and an output ramp rotatable relative to the input ramp for varying an axial extension of the ramp system
- a pilot clutch for triggering a Twisting the input ramp relative to the output ramp due to a differential speed between a torque input element, in particular drive shaft of an automotive engine, and a Drehmomentaus effetselement, in particular a transmission input shaft of a motor vehicle transmission
- a trip unit for actuating the pilot clutch, wherein between the pilot clutch and the input ramp, a planetary gear for translating one of the Pilot clutch to the output ramp transmitted actuation force to open and / or close the friction clutch is formed.
- the energy required for the contact force can be derived, in particular, from the torque introduction element by supporting the torque introduction element via the ramp system and the pilot control clutch on the torque diversion element.
- the pressure plate, or a plurality of pressure plates coupled to each other, can be displaced thereby, so that the friction clutch can be closed.
- the rotational speeds of the torque introduction member and the torque extraction member are synchronized with each other so that a rotational speed difference between the torque introduction member and the torque elimination member is no longer present.
- the ramp system can then remain in the reached position, without the need to initiate a torque and / or a contact pressure via the pilot clutch.
- pilot clutch Due to the planetary gear, it is possible to increase the introduced via the pilot clutch differential torque, so that a correspondingly increased torque arrives at the ramp system and a correspondingly increased contact pressure can be generated. This means that a correspondingly lower differential torque must be absorbed by the pilot clutch in order to produce a desired contact pressure.
- the pilot clutch can thereby be designed for a lower torque to be transmitted and dimensioned correspondingly smaller. For example, a Reibbelags- area of the pilot clutch for frictional transmission of the differential torque may be provided with a smaller friction surface and / or be arranged on a smaller radius.
- the ramps of the ramp system can slide directly on each other or be rotated relative to each other via at least one ball, a cylinder or other rotatable element.
- the distance of the back facing away from the other opposite ramp rear sides of the input ramp and the output ramp can change, so that correspondingly reduce or increase the axial extent of the ramp system.
- the ramp system may increase its axial extent with both a positive speed difference between the torque introducing element and the torque diverting element and a negative speed difference between the torque introducing element and the torque diverting element.
- the respective ramps for example, two at an angle, in particular substantially V-shaped, be provided running away from each other running to the radial plane ramped partial ramps, so that Starting from a neutral position with minimal axial extent of the ramp system, both a rotation in the one circumferential direction and a rotation in the opposite circumferential direction leads to an increase in the axial extent of the ramp system.
- the partial ramps can be directly connected to each other or connected to each other via a non-tapered running in the radial plane intermediate area.
- the partial ramps can be configured substantially mirror-inverted or have a different pitch and / or length in the circumferential direction.
- the maximum relative angle of rotation of the input ramp to the output ramp is limited for example by at least one stop, whereby, for example, exceeding a maximum wear range of friction linings of the friction clutch can be avoided.
- at least the ramp-shaped subregions of the input ramp and the output ramp are identical, in particular as identical parts, formed.
- the pressure plate of the friction clutch is formed by the output ramp.
- the pressure plate of the friction clutch may be formed integrally with the output ramp of the ramp system.
- the maximum torque that can be transmitted by the friction clutch is limited by the design of the ramps of the ramp system, for example by means of stops provided at suitable locations. A contact pressure of the pressure plate can be limited.
- the maximum transmissible torque for the traction operation may be different or equal to the maximum transmissible torque for the traction operation.
- the maximum transferable torque for the overrun operation is lower than for the train operation. An unnecessarily high load on components in the drive train, in particular during overrun operation, can be avoided, so that in particular possible damage to a torsional vibration damper, in particular two-mass flywheel, is avoided.
- the pilot control clutch can be configured as a friction clutch, wherein the pilot clutch can be dimensioned in particular significantly smaller than the friction clutch to be actuated by the clutch actuation system.
- the input ramp of the ramp system can be coupled to the torque introduction element or the torque output element.
- the pilot clutch can be opened and / or closed. Due to the gear ratio provided by the planetary gearing, the triggering seaji be sized accordingly small. Since only a correspondingly low differential torque must be transmitted from the pilot clutch, a correspondingly low contact pressure provided by the trip unit is already sufficient.
- the planetary gear has functional elements in the form of a sun, a ring gear and at least one meshing with the sun and the hollow wheel planet wheel, which is rotatably supported by a planet carrier on.
- a suitable for the desired ratio or reduction functional element may be connected to the input ramp of the ramp system, while another functional element may be connected to an output side of the pilot clutch.
- a suitable transmission ratio can be specified.
- a functional element may be held non-rotatably and / or optionally braked with and / or without slippage in order to be able to set and / or optionally change a desired transmission ratio.
- the planetary gear is in particular designed and / or connected to the ramp system and the pilot clutch, that a speed introduced by the pilot clutch is reduced and at the ramp system, a lower compared to the speed introduced by the pilot clutch speed arrives and at the same time initiated by the pilot clutch Torque is translated and arrives at the ramp system in comparison to the torque introduced by the pilot clutch torque greater torque, whereby a translation of a transmitted from the pilot clutch to the output ramp actuating force for opening and / or closing the friction clutch takes place.
- the trip unit actuates the pilot clutch electromagnetically, in particular by means of a preferably continuously electrically actuated electromagnet. Due to the low contact force required in the pilot control clutch, an electromagnetically generated contact pressure force may be sufficient.
- a correspondingly small-sized solenoid can be used, which exerts no unnecessary magnetic forces on other adjacent components due to the low field strength required and weakening of the magnetic force by other components and / or impairment of other components are avoided by the trip unit.
- the input ramp is designed as a ring gear of the planetary gear.
- the ramp region of the input ramp may at least partially point radially outward, so that the input ramp can very easily be configured as a closed ring, which may have a radially inwardly facing toothing for forming the ring gear.
- an already existing component can be used to form a functional element of the planetary gear without providing a separate component for this functional element.
- the space requirement and the number of components can be kept low.
- the pilot clutch on a displaceable by means of the trip unit input element and a frictionally engageable with the input element output element, wherein the output member is rotatably connected to a sun gear of the planetary gear.
- the sun gear can be configured integrally with the output element, so that the space requirement and the number of components can be kept low to provide the planetary gear.
- the pilot clutch can be positioned radially further in particular in comparison to the friction surfaces of the friction clutch, so that a small space requirement is achieved and a particularly easy connection to the sun gear can succeed.
- the planetary gear has at least one meshing with a sun gear and a ring gear of the planetary gear planet gear, wherein the planet gear is rotatably mounted on a clutch cover of the friction clutch, wherein in particular the clutch cover rotatably connected to the torque introduction element is connectable.
- a separate planned planetary carrier can be avoided by using an intended anyway clutch cover for this function.
- the planetary gear may have a pin rotatably mounted in the clutch cover and / or the clutch cover has a non-rotatably connected to the clutch cover, in particular integrally, connected bolts around which the planetary gear can rotate.
- a braking device which brakes a separately executed planetary carrier and coupled with the movement of the torque introduction element, can be saved.
- the clutch cover is rotatably coupled to the torque introduction element, for example, by a non-rotatable mounting with a counter-plate of the friction clutch.
- the output ramp is indirectly or directly connected to a return torsion spring for rotating the output ramp in a defined starting position in the absence of contact pressure, in particular, the friction clutch is open in the defined starting position of the output ramp. If the friction clutch is to be opened, the pilot clutch can be opened, so that the ramps of the ramp system can no longer be supported by the pilot clutch. By the spring force of the return spring, the output ramp can be rotated back relative to the input ramp, so that the axial extent of the ramp system can be reduced and the friction clutch is opened.
- the return torsion spring which may be configured, for example, in the manner of a torque sensor, exert a spring force acting in the tangential direction and / or in the circumferential direction on the output ramp and thereby provide a suitable return torque. Furthermore, it is possible for the return torsion spring, configured, for example, as a leaf spring, to exert a spring force on the pressure plate in an opening direction of the friction clutch so that the pressure plate exerts an axial force on the output ramp, whereby the output ramp is rotated to reduce the axial extent of the ramp system can.
- the pilot clutch has a displaceable by means of the trip unit input element and a frictionally engageable with the input element output element, wherein the input element is directly or indirectly connected to a return spring for axial positioning of the input member in a defined starting position in the absence of the trip unit deployable release force, wherein par- where the pilot clutch is closed in the defined starting position of the input element.
- the restoring spring designed, for example, as a plate spring can, in the event that the triggering unit does not provide force, position the input element in a defined position with the aid of its spring force, for example a "normally open” or preferably normally closed position of the pilot clutch also provide for the friction clutch.
- the invention further relates to a clutch unit with a friction clutch for coupling a drive shaft of a motor vehicle engine with a transmission input shaft of a motor vehicle transmission, wherein the friction clutch a counter plate for introducing a torque and a relative to the counter plate displaceable pressure plate for frictional pressing a clutch disc between the counter plate and the pressure plate for discharging of the torque, and a clutch actuation system, which may be formed and further developed as described above, for displacing the pressure plate.
- the invention further relates to a drive train of a motor vehicle having a drive shaft of an automotive engine, a transmission input shaft of a motor vehicle transmission and a clutch unit, which may be off and on as described above, for coupling the drive shaft with the transmission input shaft.
- the invention further relates to a method for coupling a drive shaft of an automotive engine with a transmission input shaft of a motor vehicle transmission by means of a friction clutch, wherein a differential torque generated by a speed difference between the drive shaft and the transmission input shaft by means of a planetary gear, in particular part of a clutch actuation system, as above described and can be trained, is translated and the translated differential torque is used to operate the friction clutch.
- a differential torque generated by a speed difference between the drive shaft and the transmission input shaft by means of a planetary gear, in particular part of a clutch actuation system, as above described and can be trained is translated and the translated differential torque is used to operate the friction clutch.
- 1 is a schematic diagram of a clutch actuation system
- Fig. 2 is a schematic sectional view of a friction clutch with the
- FIG. 3 is a schematic sectional view of a detail of the clutch actuating system of FIG. 2.
- the clutch actuation system 10 shown very diagrammatically in FIG. 1 is between a torque introduction element 14, for example a crankshaft, an output side of a torsional vibration damper or a clutch cover 16 of a friction clutch 18, and a torque diversion element 22 coupled to a motor vehicle transmission 20, for example a transmission input shaft , intended.
- the clutch actuation system 10 has a pilot clutch 24, which can be opened and closed by means of a trip unit 26.
- the tripping unit 26 can axially displace an input element 28, which is connected in a rotationally fixed manner to the torque diverting element 22, in order to bring about and / or cancel a frictional engagement with an output element 30.
- the trip unit 26 is connected to a voltage source 32 and the electromagnetically energize the input member 28 against a spring force of a return spring 34 configured as a plate spring to open the pilot clutch 24.
- the output element 30 of the pilot clutch 24 is connected to a sun gear 36 of a planetary gear 38.
- the sun gear 36 meshes with at least one planet gear 40, which is rotatably supported by a formed by the clutch cover 16 of the friction clutch 18 planet carrier 42 and meshes with a ring gear 44.
- the ring gear 44 of the planetary gear 38 is connected to an input ramp 46 of a ramp system 48.
- the input ramp 46 is supported on one side via a bearing 50 on the torque input element 14 and on the opposite side forming the ramp shape via a ball 52 on an output ramp 54 with a corresponding ramp shape.
- a return torsion spring 55 designed, for example, as a torque sensor, the output ramp 54 can be rotated back into a defined starting position if no torque introduced by the pilot control clutch 24 is applied for rotating the ramps 46, 54.
- the axial extent of the ramp system 48 may increase, so that the pressure plate 56 can be displaced in the axial direction on a fixedly connected to the clutch cover 16 back plate 60 to at least one clutch disc 62, if necessary with the help Intermediate Rajanpressplatten 64 frictionally pressed to thereby close the friction clutch 18.
- the torque of the motor vehicle engine 12 arriving via the clutch cover 16 and the counterplate 60 can then be transmitted to a transmission input shaft of the motor vehicle transmission 20 via a clutch disk carrier 66, which may optionally have a disk damper 68.
- the trip unit 26 has a plurality of wire windings 70 which form a coil and form by means of a yoke 72 an electromagnet.
- the trip unit 26 can thereby generate a magnetic force to use the input member 28 for opening the pilot clutch 24 in the axial direction.
- the input member 28 may be relatively rotatable via an input bearing 74, for example on the trip unit 26, be stored.
- a minimum distance of the input element 28 to the yoke 72 can be maintained by the input bearing 74, so that direct contact can be avoided.
- the output member 30 may be relatively rotatably supported and supported via an output bearing 76, for example on the clutch cover 16. REFERENCE SIGNS clutch actuation system
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112014001856.2T DE112014001856A5 (de) | 2013-04-04 | 2014-03-10 | Kupplungsbetätigungssystem zum Öffnen und/oder Schließen einer Reibungskupplung sowie Verfahren zum Kuppeln einer Antriebswelle eines Kraftfahrzeugmotors mit einer Getriebeeingangswelle eines Kraftfahrzeuggetriebes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013205924 | 2013-04-04 | ||
DE102013205924.8 | 2013-04-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014161538A1 true WO2014161538A1 (de) | 2014-10-09 |
Family
ID=50639243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2014/200118 WO2014161538A1 (de) | 2013-04-04 | 2014-03-10 | KUPPLUNGSBETÄTIGUNGSSYSTEM ZUM ÖFFNEN UND/ODER SCHLIEßEN EINER REIBUNGSKUPPLUNG SOWIE VERFAHREN ZUM KUPPELN EINER ANTRIEBSWELLE EINES KRAFTFAHRZEUGMOTORS MIT EINER GETRIEBEEINGANGSWELLE EINES KRAFTFAHRZEUGGETRIEBES |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE102014204338A1 (de) |
WO (1) | WO2014161538A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015200845A1 (de) * | 2015-01-20 | 2016-07-21 | Schaeffler Technologies AG & Co. KG | Selbstverstärkende Kupplung mit in Umfangsrichtung begrenzt verdrehbarer Anpressplatte |
WO2016165712A1 (de) * | 2015-04-17 | 2016-10-20 | Schaeffler Technologies AG & Co. KG | Kupplungssystem |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5503602A (en) * | 1994-07-12 | 1996-04-02 | Dana Corporation | Clutch actuating device having pilot clutches for use in a vehicle interaxle differential |
EP0848178A2 (de) * | 1996-12-13 | 1998-06-17 | Eaton Corporation | Antriebskupplung mit Einrichtungs- Kugel- Rampen- Betätigungseinrichtung |
EP0905399A1 (de) * | 1997-09-30 | 1999-03-31 | Eaton Corporation | Kugel-Rampen-Kupplungsbetätigungsvorrichtung eines Antriebsstranges mit unidirektioneller Betätigung |
DE102006028645A1 (de) | 2005-06-22 | 2006-12-28 | Gkn Driveline Torque Technology Kk | Elektromagnetische Kupplung |
DE102011104417A1 (de) * | 2010-06-29 | 2011-12-29 | Schaeffler Technologies Gmbh & Co. Kg | Betätigungsvorrichtung |
-
2014
- 2014-03-10 DE DE201410204338 patent/DE102014204338A1/de not_active Withdrawn
- 2014-03-10 DE DE112014001856.2T patent/DE112014001856A5/de not_active Withdrawn
- 2014-03-10 WO PCT/DE2014/200118 patent/WO2014161538A1/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5503602A (en) * | 1994-07-12 | 1996-04-02 | Dana Corporation | Clutch actuating device having pilot clutches for use in a vehicle interaxle differential |
EP0848178A2 (de) * | 1996-12-13 | 1998-06-17 | Eaton Corporation | Antriebskupplung mit Einrichtungs- Kugel- Rampen- Betätigungseinrichtung |
EP0905399A1 (de) * | 1997-09-30 | 1999-03-31 | Eaton Corporation | Kugel-Rampen-Kupplungsbetätigungsvorrichtung eines Antriebsstranges mit unidirektioneller Betätigung |
DE102006028645A1 (de) | 2005-06-22 | 2006-12-28 | Gkn Driveline Torque Technology Kk | Elektromagnetische Kupplung |
DE102011104417A1 (de) * | 2010-06-29 | 2011-12-29 | Schaeffler Technologies Gmbh & Co. Kg | Betätigungsvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
DE112014001856A5 (de) | 2015-12-24 |
DE102014204338A1 (de) | 2014-10-09 |
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