WO2015110109A1 - Kupplungssystem mit druckgeregelter reibungskupplung - Google Patents
Kupplungssystem mit druckgeregelter reibungskupplung Download PDFInfo
- Publication number
- WO2015110109A1 WO2015110109A1 PCT/DE2014/200716 DE2014200716W WO2015110109A1 WO 2015110109 A1 WO2015110109 A1 WO 2015110109A1 DE 2014200716 W DE2014200716 W DE 2014200716W WO 2015110109 A1 WO2015110109 A1 WO 2015110109A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clutch
- pressure plate
- force
- friction
- 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
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/70—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members
-
- 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
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
-
- 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
- F16D21/00—Systems comprising a plurality of actuated clutches
- F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
- F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric
-
- 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
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
-
- 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
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
-
- 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
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/102—Actuator
- F16D2500/1026—Hydraulic
-
- 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
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/104—Clutch
- F16D2500/10443—Clutch type
- F16D2500/1045—Friction clutch
-
- 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
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/302—Signal inputs from the actuator
- F16D2500/3024—Pressure
-
- 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
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/70—Details about the implementation of the control system
- F16D2500/702—Look-up tables
- F16D2500/70205—Clutch actuator
- F16D2500/70211—Force
-
- 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
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/70—Details about the implementation of the control system
- F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
- F16D2500/70402—Actuator parameters
- F16D2500/7041—Position
Definitions
- the invention relates to a clutch system with a depressed friction clutch, in particular a friction clutch of a dual clutch of a dual clutch transmission with a counter-pressure plate and an opposite thereto along an actuation path with a predetermined force curve with between a non-actuated state of the friction clutch via a touch point up to a maximum transferable clutch torque increasing force under clamping of friction linings of a clutch disc displaceable pressure plate, a pressure-controlled depending on the force characteristic, hydraulically effective, the pressure plate displacing clutch actuator.
- Pressure-controlled friction clutches are known, for example, from DE 10 2012 204 929 A1 and DE 10 2012 204 940 A1. Structure and function of a pressed, arranged in a double clutch friction clutch are known for example from DE 10 2008 019 949 A1. In this case, a compressed, that is in the non-actuated state open and closed by actuation of the clutch actuator friction clutch of a so-called Hydrostataktor, for example, from DE 10 201 1 110 550 A1, closed. In this case, the pressure building up in the hydrostatic actuator via the actuation travel serves as a control variable for the clutch torque to be set at the friction clutch.
- the clutch torque increases with increasing pressure, wherein a pressure plate is braced by the clutch actuator as Hydrostataktor with the interposition of the friction linings of a clutch disc against a counter-pressure plate, so that between friction linings on the one hand and counter and pressure plate on the other hand, a frictional engagement is formed, which increases with increasing pressure Frictional torque as clutch torque transmits.
- a pressure plate is braced by the clutch actuator as Hydrostataktor with the interposition of the friction linings of a clutch disc against a counter-pressure plate, so that between friction linings on the one hand and counter and pressure plate on the other hand, a frictional engagement is formed, which increases with increasing pressure Frictional torque as clutch torque transmits.
- no torque is transmitted via the friction clutch over a predetermined travel range of a slave cylinder of the hydrostatic engine up to a touch point. At the touch point, the transmission of clutch torque begins.
- This increased force gradient leads to an increase in the loss of energy, which reduces the efficiency of the friction clutch by an increased actuation energy for the production of frictional engagement between friction linings and Gegentik- and pressure plate.
- the required to transmit the desired clutch torque operating force increases due to the force gradient caused by the increased initial force at the touch point.
- the force gradient is set, for example, by increased leaf spring forces, which go far beyond a necessary Abhubkraft the pressure plate of the counter-pressure plate or the friction linings with open friction clutch.
- the object of the invention is therefore to provide a pressure-controlled coupling system which has a higher efficiency, in particular has a lower force gardienten before the touch point.
- the proposed clutch system includes a depressed friction clutch.
- This is a friction clutch, which in the non-actuated state is open (normally open) and closed by the action of a clutch actuator, preferably a hydrostatic actuator.
- the friction clutch may be formed as a single clutch and a separate counter-pressure plate and a relative to this by means of leaf springs rotatably and axially displaceable pressure plate, wherein a lever device, such as actuating lever, a lever spring, a plate spring or the like are axially displaced under support on a housing radially from the clutch actuator and displace the pressure plate against the platen to close the friction clutch.
- the friction clutch can be pressed or pulled depending on the design of the actuation geometry of the clutch actuator.
- an actuating arm which faces away from an actuating device, such as a slave cylinder, actuating pressure rod can engage over the counter-pressure plate and form a contact surface for a corresponding lever device.
- both friction clutches may be arranged on a counterpressure plate, one friction clutch being pressed in and the other being pulled in.
- Characteristics of the lining suspension of the friction linings and the characteristics of the leaf springs between pressure plate and counter-pressure plate a predetermined force characteristic, for example, from a non-actuated state of the friction clutch to a touch point may be formed slightly ascending by the leaf springs and from the touch point, in which the friction surfaces of contact pressure and counter-pressure plate on the one hand and the friction pads on the other hand begin to touch, is formed to a maximum transmissible clutch torque with steeply increasing force.
- the clutch actuator is preferably designed as a hydrostatic actuator with a hydraulic path, in which a master cylinder of an electric motor, preferably with the interposition of a rotational movement of the rotor in a linear motion converting gear, for example, a coaxial with the rotor axis arranged planetary gear or planetary Netengetriebes is actuated.
- the master cylinder transfers the pressure generated by displacement of the master cylinder piston to a slave cylinder whose slave cylinder piston displaces the lever device and thus the pressure plate in a pressure-controlled manner and thereby opens and closes the friction clutch under pressure control.
- the pressure control takes place in a particularly advantageous manner by the force characteristic in a path range of the actuation path between the non-actuated state and the touch point along the path range effective energy storage is switched on.
- the characteristic can be formed in the path area before the touch point very flat rising, for example, the leaf springs are designed weaker.
- the energy store is preferably connected immediately before the touch point, so that before reaching the touch point results in a recognizable for an evaluation of the pressure level as pressure or power level. In this way, the total energy of the actuation process can be kept low and the degree of rotation increased, for example, kept in the range of a path-controlled friction clutch.
- a pressure sensor in the hydrostatic section or another representative size can be used.
- marginal parameters such as gear ratio of the Hydrostataktors, friction, geometry of the hydrostatic path, the actuation path and the like, depending on pressure-changing electrical variables of the electric motor, such as a changing operating current, a voltage change, a change in performance and / or the like of the pressure-controlled actuation of Serve friction clutch.
- the envisaged energy storage device is preferably axially effective between two components axially displaced against each other during an actuation of the friction clutch.
- These components are preferably the reaction plate and the pressure plate.
- components may be provided which image a displacement movement between counter-pressure plate and pressure plate, for example, the energy storage between a housing of the friction clutch and the be arranged press plate, the slave cylinder housing and the slave cylinder piston and the like.
- the energy store may preferably be designed as a mechanical spring, for example as a screw, plate, leaf spring or the like and / or as a rubber spring or rubber buffer. It has proven to be particularly advantageous in arrangements of the energy storage between the platen and the pressure plate to form the energy storage as at least one leaf spring.
- a plurality of leaf springs may be connected to a leaf spring package. Several leaf springs or leaf spring packets can be distributed over the circumference.
- the at least one leaf spring or a plurality of these formed leaf spring packages may be at the end to a component, such as counter pressure plate or pressure plate, recorded and before reaching the Tast Vietnameses in operative engagement with the other component - pressure plate or counter pressure plate - occur. Accordingly, the end of the leaf spring or the leaf spring package not fastened to the component at the end is arranged with the friction clutch open with axial play to the other component.
- the free end When closing the friction clutch, the free end approaches the other component and occurs immediately before the touch point, so the contact of the friction surfaces of the friction linings and the counterpressure and pressure plate in contact with the component, so that as a result of the springing the at least one Leaf spring before the touch point, a force threshold occurs and thus the touch point is recognized as an increase in pressure at the Hydrostataktor or at a control or evaluation of this.
- the touch point moves to larger actuation paths, which means that with increasing Reibbelagsverschl formulate the two components, such as pressure plate and counter-pressure plate, increasingly smaller axial distances at the touch point.
- the energy storage has an adjusting device for the compensation of friction lining wear.
- a corresponding adjusting device can be formed from a force-dependently switching axial freewheel when the energy accumulator stops at the other component. This means that a stop of the energy storage is compared with the axially spaced-apart component by means of a Axialarhans adapted to the wear.
- the axial stop is switched when a force threshold, which is higher than the force required to compress the energy storage, is exceeded, for example, when the pressure plate occurs in surface pressure with the friction linings of the clutch disc.
- a force threshold which is higher than the force required to compress the energy storage
- the adjusting device has a stop in one
- a displacement of the pin in block position of the energy storage relative to the energy storage component receiving means may be provided by means of an engagement force of the friction clutch.
- the pin can be displaced if the at least one leaf spring accommodated on the counterpressure plate rests on the counterpressure plate after being acted upon by the pressure plate.
- the applied engagement force of the friction clutch acts on the pin and overcomes the force threshold of the axial freewheel so that it is displaced along the axial freewheel until the engagement force is taken over by the friction linings.
- FIG. 1 is a partial view of a friction clutch
- FIGS. 1 and 2 shows a diagram with characteristics of the friction clutch of FIGS. 1 and 2.
- FIG. 1 shows a detail of a view of the compressed friction clutch 1 shown only partially.
- the component 2 - here the ring or disc-shaped counter-pressure plate 3 can be seen.
- a pressure plate is rotatably and axially displaceable received in a manner not shown by distributed over the circumference of the leaf springs. Between the friction surface 4 and the friction surface of the pressure plate friction linings are added.
- the friction clutch transmits a clutch torque.
- the control of the clutch torque is controlled by pressure.
- a predetermined pressure is set to a predetermined clutch torque, which exceeds the friction value of the friction surfaces and thus adjusted depending on the surface pressure between the friction surfaces to adjust.
- the tactile point at which the friction clutch 1 starts to transmit a clutch torque is of essential importance, the tactile point at which the friction clutch 1 starts to transmit a clutch torque, to recognize clearly.
- the energy storage 5 is fixed on the counter-pressure plate 3, which generates a force threshold immediately before reaching the touch point along the actuation path of the friction clutch 1, which is evaluated by a control unit of the clutch system and assigned to the touch point.
- the energy store 5 is formed from a plurality of leaf springs 6 laminated to the leaf spring packet 7. Several, distributed over the circumference leaf springs 6 or leaf spring packets 7 can form the energy storage 5.
- the leaf spring package 7 is connected at the end to the counterpressure plate 3, for example riveted.
- the free end 8 contains the pin 9 and is axially spaced from the surface of the counter-pressure plate 3. The surface of the pin 9 occurs at closing friction clutch 1 and thus axially on the counter-pressure plate 3 in the direction of arrow 1 1 zubewegter pressure plate after exhaustion of an axial play in contact with the pressure plate, so that due to the stiffness of the leaf spring assembly, a force threshold is established.
- the axial clearance is formed so that an idle travel of the pressure plate falls into the axial play and the axial play is used up at the touch point.
- the free end 8 comes in a block position on the surface of the counter-pressure plate 3.
- the axial play is determined by the holding element 10 by this limits the expansion of the free end 8 of the leaf spring package 7.
- the holding element 10 passes through the counter-pressure plate 3 and is axially supported on the rear side.
- the friction clutch 1 therefore has an adjusting device for the energy storage 5 to the changed touch point. From the sectional view of Figure 2, the structure of the adjusting device 12 is apparent.
- the pin 9 forms with the holding element 10 the force-switching axial freewheel 13.
- the pin may be smooth and the tabs may be frictionally biased against it.
- the latching between grooves 14 and tabs 15 holds the force expended in the direction of the arrow 11 for the elastic deformation of the leaf spring packet 7.
- the pin 9 is loaded beyond the touch point by the pressure plate with the engagement force of the friction clutch 1, so that the tabs 15 yield elastically and the pin 9 is displaced axially in the direction of the arrow 1 1 until the engagement force passes to the friction linings to form the surface pressure. Due to the axial displacement of the pin 9 so that the position is made on the new touch point.
- FIG. 3 shows the diagram 16 with the engagement force F against the actuation travel s of the friction clutch 1 of FIGS. 1 and 2.
- the force characteristics 17, 18 show the behavior of the engagement force relative to the actuation travel s in the friction clutch 1 in the new condition (force characteristic 17) and in FIG Wear condition (force characteristic 18).
- the force thresholds ⁇ F, ⁇ F 'caused by the energy store 5 of FIG. 1 are provided.
- the energy store 5 is provided with the adjusting device 12.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112014006234.0T DE112014006234A5 (de) | 2014-01-22 | 2014-12-15 | Kupplungssystem mit druckgeregelter Reibungskupplung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014201053 | 2014-01-22 | ||
DE102014201053.5 | 2014-01-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015110109A1 true WO2015110109A1 (de) | 2015-07-30 |
Family
ID=52434471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2014/200716 WO2015110109A1 (de) | 2014-01-22 | 2014-12-15 | Kupplungssystem mit druckgeregelter reibungskupplung |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112014006234A5 (de) |
WO (1) | WO2015110109A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017119883A1 (de) | 2017-08-30 | 2019-02-28 | Schaeffler Technologies AG & Co. KG | Verfahren zur Steuerung einer automatisierten Reibungskupplung |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008019949A1 (de) | 2007-04-25 | 2008-10-30 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Doppelkupplung |
CN101809308A (zh) * | 2007-09-24 | 2010-08-18 | 卢克摩擦片和离合器两合公司 | 摩擦离合器 |
DE102011010880A1 (de) | 2010-02-26 | 2011-09-01 | Schaeffler Technologies Gmbh & Co. Kg | Verfahren zur Steuerung einer automatisierten Reibungskupplung |
DE4244993B4 (de) * | 1991-11-26 | 2011-12-01 | Schaeffler Technologies Gmbh & Co. Kg | Reibungskupplung |
DE102012204929A1 (de) | 2011-04-15 | 2012-10-18 | Schaeffler Technologies AG & Co. KG | Verfahren zur Inbetriebnahme einer Kupplung |
DE102012204940A1 (de) | 2011-04-15 | 2012-10-18 | Schaeffler Technologies AG & Co. KG | Verfahren zur Adaption von Parametern einer Kupplung |
DE102012205919A1 (de) * | 2012-04-12 | 2013-10-17 | Schaeffler Technologies AG & Co. KG | Montageeinheit für eine Reibungskupplung, Reibungskupplung und Verfahren zur Montage einer Reibungskupplung |
-
2014
- 2014-12-15 WO PCT/DE2014/200716 patent/WO2015110109A1/de active Application Filing
- 2014-12-15 DE DE112014006234.0T patent/DE112014006234A5/de not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4244993B4 (de) * | 1991-11-26 | 2011-12-01 | Schaeffler Technologies Gmbh & Co. Kg | Reibungskupplung |
DE102008019949A1 (de) | 2007-04-25 | 2008-10-30 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Doppelkupplung |
CN101809308A (zh) * | 2007-09-24 | 2010-08-18 | 卢克摩擦片和离合器两合公司 | 摩擦离合器 |
DE102011010880A1 (de) | 2010-02-26 | 2011-09-01 | Schaeffler Technologies Gmbh & Co. Kg | Verfahren zur Steuerung einer automatisierten Reibungskupplung |
DE102012204929A1 (de) | 2011-04-15 | 2012-10-18 | Schaeffler Technologies AG & Co. KG | Verfahren zur Inbetriebnahme einer Kupplung |
DE102012204940A1 (de) | 2011-04-15 | 2012-10-18 | Schaeffler Technologies AG & Co. KG | Verfahren zur Adaption von Parametern einer Kupplung |
DE102012205919A1 (de) * | 2012-04-12 | 2013-10-17 | Schaeffler Technologies AG & Co. KG | Montageeinheit für eine Reibungskupplung, Reibungskupplung und Verfahren zur Montage einer Reibungskupplung |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017119883A1 (de) | 2017-08-30 | 2019-02-28 | Schaeffler Technologies AG & Co. KG | Verfahren zur Steuerung einer automatisierten Reibungskupplung |
Also Published As
Publication number | Publication date |
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DE112014006234A5 (de) | 2016-10-27 |
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