DE102015206420A1 - Pressure pot, coupling device, method for actuating a coupling device and torque transmission device - Google Patents

Abstract

The invention relates to a pressure pot for a coupling device, in particular for a multiple clutch with a preferred radial arrangement of two coupling devices for a drive train of a vehicle, wherein the pressure pot has a pressure piston device for displacing the pressure pot and thus for actuating the coupling device, and the pressure piston device two preferably from each other offset piston surfaces has such that the piston surfaces are independently acted upon by an actuating fluid.
The invention further relates to a clutch device or a multiple clutch device for a drive train of a vehicle, in particular a motor vehicle with an internal combustion engine, with a hub and a radially mounted on the hub and axially displaceable pressure pot, wherein the pressure pot a pressure piston device for displacing the pressure pot and for actuating the Coupling device, wherein the pressure piston device has two preferably offset from each other pressure piston such that the pressure piston can be acted upon independently of each other with an actuating fluid.

Description

The present invention relates to a pressure pot for a clutch device, in particular for a multiple clutch with a preferred radial arrangement of two clutch devices, for a drive train of a vehicle, in particular a motor vehicle. Furthermore, the invention relates to a coupling device or a multiple coupling device for a drive train of a vehicle. Furthermore, the invention relates to a method for actuating a clutch device of a clutch, in particular a clutch device of a multiple clutch, and a torque transmission device, a transmission or a clutch, in particular a dual-clutch transmission or a double clutch.

An internal combustion engine of a motor vehicle gives a usable power to a motor vehicle driver only in a certain speed range. In order to use this speed range for different driving conditions of the motor vehicle, this requires an automatic or manually switchable transmission. Such a transmission is mechanically coupled via a clutch with the internal combustion engine. Due to different and also increased demands on actuation forces, on a performance and to be transmitted engine torque of the clutch, a variety of clutches in the drive trains of motor vehicles are used. Thus, for example, dry or wet-running single disc or multi-plate clutches are used, and these can be designed as single, double or multiple clutches.

In addition to a main function of connecting and disconnecting a crankshaft of the internal combustion engine or an output shaft of an electric motor with and from a transmission input shaft of the motor vehicle, the clutch has a number of other important tasks. It should allow a smooth and smooth starting of the motor vehicle, ensure a fast gearshift, keep torsional vibrations of the engine from the transmission and thus reduce rattle noise and wear, as an overload protection for the (entire) powertrain, z. As in switching errors serve, as well as wear and easy to be interchangeable. Here, the coupling should be cost-effective in their production, their installation and / or their operation with a small space consumption in the drive train.

A today's multiple or double clutch, which is hydraulically actuated by means of pressure pots or is actuated each has a pressure chamber per clutch device or partial clutch. An actuating force of the respective pressure pot of the clutch device or partial clutch is a product of a fluid pressure of an actuating fluid in the respective pressure chamber and a piston surface of this pressure pot. Due to a cost pressure and a demanded increased performance with permanently smaller space in the powertrains of motor vehicles increasingly matters in a focus of developers, which caused so far only minor or easy to fix problems.

Due to increasing torques of the engines of motor vehicles higher actuation forces for at least one of the coupling devices of a multiple or double clutch is required, which leads to increasing actuation pressures for at least one pressure pot of the respective coupling device. This problem can be circumvented by a piston area of the respective pressure pot is increased, which has the disadvantage that a relatively large volume flow of an actuating fluid must be conveyed into a pressure chamber, which is limited by the respective movable pressure pot. When the fluid pressure in the pressure chamber is increased, the pressure pot in question is preferably axially displaced against a spring. This leads to a slow response when operating the respective coupling device.

It is an object of the invention to improve a response in a clutch with increased operating forces. For this purpose, in particular an improved pressure pot should be specified. Furthermore, a correspondingly improved clutch device or multiple clutch device, a correspondingly improved torque transmission device, a correspondingly improved transmission and a correspondingly improved clutch should be specified. Furthermore, an improved method for actuating a clutch device of a clutch, in particular a clutch device of a multiple clutch should be specified. In this case, the coupling device according to the invention should be cost-effective in its production, its installation, its maintenance and / or its operation with a small space consumption in the drive train.

The object of the invention is by means of a pressure pot for a coupling device, in particular for a multiple clutch with a preferably radial arrangement of two coupling devices, for a drive train of a vehicle, according to claim 1; by a clutch device or a multiple clutch device for a drive train of a vehicle, according to claim 6; by a method for actuating a clutch device of a clutch, in particular a clutch device of a Multiple clutch, for a drive train of a vehicle, according to claim 9; and by means of a torque transmission device, a transmission or a clutch, in particular a dual-clutch transmission or a dual clutch, according to claim 12. - Advantageous developments, additional features and / or advantages of the invention will become apparent from the dependent claims and / or the following description.

In the following, a coupling device or a coupling is generally understood to mean a machine element as an organizational unit which serves for a mechanically detachable connection of at least two preferably coaxial shafts, in particular an output drive shaft and a drive shaft of a motor vehicle or commercial vehicle, or at least two preferably coaxial machine elements. The coupling device according to the invention for a clutch or a clutch transmission can be applied to all drive trains of vehicles, eg. B. of motor vehicles or commercial vehicles, especially passenger cars and trucks, or be applied to all torque transmission devices. The coupling device according to the invention is preferably designed as a wet-running multiple coupling device, in particular as a radial double coupling device.

The pressure pot according to the invention has a pressure piston device for displacing the pressure pot and thus for actuating the coupling device, wherein the pressure piston device has two preferably offset piston surfaces such that the piston surfaces can be acted upon independently with an actuating fluid. - The at least two piston surfaces may be formed offset from each other in the axial direction of the pressure pot on the pressure pot; be formed substantially coaxially to one another or in the axial direction in alignment with the pressure pot; each be formed perpendicular to the axial direction of the pressure pot; be set apart from each other in the radial direction of the pressure pot formed on the pressure pot; be formed substantially at a single axial position on the pressure pot; have a substantially similar shape, in particular a ring shape; have a substantially same or a different surface area; and / or be formed in the circumferential direction of the pressure pot substantially completely circumferential to the pressure pot.

The pressure piston device can have two pressure pistons, on which the two piston surfaces are formed. The two piston surfaces may be formed substantially in two radial planes on the two pressure pistons, wherein the two pressure pistons are arranged offset in the axial direction parallel to each other. A first pressure piston and a second pressure piston of the pressure pot can be firmly connected to one another by means of a connecting web extending in the axial direction and / or radial direction. Furthermore, a main body of the pressure pot can extend radially away from the first pressure piston or substantially adjacent to the first pressure piston, from the connecting web or substantially adjacent to the second pressure piston or from the second pressure piston.

According to the invention, the actuation of the coupling device may comprise an engagement or an engagement and / or a disengagement or disengagement of the coupling device. The pressure piston device can or the first pressure piston together with the second pressure piston can form a double radial bearing for the pressure pot on a hub. The first pressure piston may have a smaller, first piston area than the second pressure piston, which then has a larger, second piston area. The connecting web can be designed such that a second pressure chamber of the coupling device can be partially limited, which preferably has a radially greater extent than a first pressure chamber of the coupling device. The pressure pot main body can have a substantially closed outer area or Drucktopffinger for actuating the clutch device radially outward. Furthermore, the pressure pot can be designed for a coupling device according to the invention or a multiple coupling device according to the invention.

Further, the pressure pot may be integrally formed, one-piece material, simple or integral. - Under a one-piece pressure pot z. B to understand an integrally held together, connected or trained pressure pot, which is not easy to separate by hand or separable but separable separable only by means of a tool. Here, the pressure pot can be made of a single or a plurality of origin pieces. Under a materially integral pressure pot is z. B to understand a material integrally held together or trained pressure pot, which can not be separated without damaging the pressure pot. The entire pressure pot is held together by a strong material connection. Under a simple pressure pot z. B to understand a pressure pot, which is also made of a single piece of origin. And under an integral pressure pot is z. B to understand a pressure pot whose origin piece is in turn integrally formed.

The coupling device according to the invention or the multiple coupling device according to the invention comprises a hub and a pressure pot radially mounted on the hub and axially displaceable, the pressure pot being a pressure piston device for displacing the pressure pot and for actuating the clutch device, wherein the pressure piston device has two pressure pistons which are preferably offset from one another such that the pressure pistons can be acted upon independently by an actuating fluid. The coupling device or a coupling device of the multiple coupling device can be designed as a radially inner and / or a radially outer coupling device. The hub is preferably designed as a rotor of a pump, wherein the hub is storable in particular on a transmission input shaft.

The hub and the respective pressure piston can at least partially limit a first pressure chamber and a second pressure chamber of the clutch device or of the multiple clutch device. The first pressure chamber may have a radially shorter extension than the second pressure chamber, wherein the first pressure chamber is preferably also delimited by a flange of the hub and / or the second pressure chamber preferably further by a disk on the hub. Ie. the first pressure piston may have a smaller, first piston area than the second pressure piston, which then has a larger, second piston area. For a boundary or limitation of the respective pressure chamber, seals for the pressure chambers are negligible when considered here.

The smaller, first piston surface can be designed for bridging a clearance of the coupling device and the larger, second piston surface can be designed for the actuation of the coupling device. Here, the first pressure chamber and the second pressure chamber can be supplied by a common pressure line in the hub with the actuating fluid. Preferably, the second pressure chamber via an anti-parallel connection of two check valves with the actuating fluid can be filled and emptied again by the actuating fluid. The check valves are preferably located in the hub. An opening force of a check valve for filling the second pressure chamber may be less than or equal to an opening force of a check valve for emptying the second pressure chamber. Further, in the disc, a check valve may be provided, which opens a Fliehölraum the coupling device relative to the second pressure chamber. The pressure pot of the coupling device according to the invention can be designed as a pressure pot according to the invention.

In the method according to the invention, the coupling device is actuated in two stages, wherein in a first stage by means of a pressure pot of the coupling device substantially only one clearance of a disk set of the coupling device is bridged, and in a temporal sequence in a second stage essentially a compression of the disk set by means the pressure pot is realized. The pressure pot can be acted on in the first stage of the actuation of the coupling device with a first fluid pressure of an actuating fluid, and the pressure pot can be acted upon in the second stage of operating the coupling device with a second fluid pressure of the actuating fluid, wherein the second fluid pressure is preferably greater than that first fluid pressure is.

The pressure pot may have a comparatively small first piston area for the first stage of the actuation of the coupling device and a comparatively large second piston area for the second stage of the actuation of the coupling device. Here, the first piston surface may be formed on a first pressure piston and the second piston surface on a second pressure piston of the pressure pot. According to the invention, both the first fluid pressure and the second fluid pressure of the actuating fluid may be a comparatively low fluid pressure. For the method according to the invention, the pressure pot can be designed as an inventive pressure pot. Furthermore, the coupling device can be designed as a coupling device according to the invention for the inventive method.

In the first stage of the actuation of the coupling device, the first fluid pressure of the actuating fluid can be built up at least in a first pressure chamber of the coupling device. Furthermore, in the second stage of actuating the coupling device, the second fluid pressure of the actuating fluid can be built up at least in a second pressure chamber of the coupling device. In the first stage of the actuation of the coupling device, a fluid pressure which is (slightly) less than the first fluid pressure of the actuating fluid (via centrifugal oil chamber) can be established in the second pressure chamber. Instead, in the first stage of the actuation of the clutch device, the first fluid pressure of the actuating fluid can also be built up in the second pressure chamber. In the second stage of the actuation of the clutch device, the second fluid pressure of the actuating fluid can also be built up in the first pressure chamber.

The invention is explained in more detail below with reference to exemplary embodiments with reference to the attached schematic and not to scale drawing. Elements, components or components which have an identical, univocal or analogous construction and / or function are provided with the same reference symbols in the description of the figures, the list of reference numerals and the patent claims and / or with the same reference symbols in the drawing. Possible, not explained in the description, in the drawing not illustrated and / or non-exhaustive alternatives, static and / or kinematic reversals, combinations, etc. to the illustrated embodiments of the invention or individual modules, parts or portions thereof, the list of reference numerals can be found.

All explained features, including those of the list of reference numerals, are applicable not only in the specified combination or the specified combinations, but also in a different combination or other combinations or in isolation. In particular, it is possible on the basis of the reference symbols and their associated features in the description of the invention, the description of the figures and / or the list of reference numerals, to replace a feature or a plurality of features in the description of the invention and / or the description of the figures. Furthermore, a feature or a plurality of features in the patent claims can thereby be designed, specified and / or substituted. - In the figures (Fig.) Of the drawing, in which no circumferential edges and no background edges are shown, show:

1 an axial half-section of a cut-free invention shown double clutch with an embodiment of a pressure pot according to the invention; and

2 a detail of the pressure pot 1 in an axially cut away on all sides, an axial half section, wherein a region of a pressure piston device according to the invention of the pressure pot is shown.

The invention - a pressure piston device 202 for a pressure pot ( 200 . 100 ), with a first pressure piston 210 and a second pressure piston 220 , as well as a method for actuating a coupling device ( 20 . 10 ) - is below with reference to embodiments of an embodiment of a variant of a multiple clutch 1 for a torque transmission device 1 for a vehicle, in particular for a drive train of a motor vehicle, explained in more detail. However, the invention is not limited to this variant, the illustrated embodiment and / or the embodiments explained below, but is of a more fundamental nature, so that it can be applied to all couplings according to the invention. Although the invention has been described and illustrated in detail by preferred embodiments, the invention is not limited by these disclosed examples. Other variations can be deduced therefrom without departing from the scope of the invention.

The explanation of the invention refers in the following to an axial direction Ax, a rotation axis Ax, a radial direction Ra and a circumferential direction Um of the torque transmission device according to the invention 1 , the multiple coupling according to the invention 1 with their coupling devices 10 . 20 and pressure pots 100 . 200 , These statements are z. B. also on a crankshaft of the internal combustion engine, the drive train of the motor vehicle, a transmission 1 etc. - Preferably, the invention is applied to a radial, in particular wet-running double clutch 1 or a dual-clutch transmission 1 possibly with a damper and / or a absorber (both not shown). However, the invention can also be applied to other couplings 1 , such as As a multiple, single or partial clutch, with an optionally axial arrangement of coupling devices or other clutch transmission 1 be applied.

The 1 shows a double clutch 1 with a radial arrangement of two coupling devices 10 . 20 each with a friction device 160 . 260 , which as a multi-plate clutch devices 10 . 20 each with a disc pack 160 . 260 are formed. The following statements essentially refer to an inner one 20 the two coupling devices 10 . 20 , The above can analogously to an external coupling device 10 be applied if a pressure pot 100 the outer coupling device 10 also a pressure piston device according to the invention 202 , which is the best of 2 can be seen has. Furthermore, what has been said can be applied analogously to all coupling devices in which a pressure pot with a pressure piston device according to the invention 202 is used.

The outer coupling device 10 has a preferred of a drive plate 40 rotationally driven plate carrier 150 preferred as an outer disc carrier 150 is trained. Here is the drive plate 40 rotatably and preferably with a certain axial play with the outer disk carrier 150 connected. Furthermore, the coupling device 10 a plate carrier 170 on, preferably as an inner disc carrier 170 is trained. The inner disc carrier 170 and the outer disc carrier 150 keep that from the pressure pot 100 the coupling device 10 actuatable disk pack 160 , depending on a position of the pressure pot 100 the coupling device 10 in an engaged or disengaged state. The inner disc carrier 170 is connectable to a, preferably inner, transmission input shaft.

Analogously, the inner coupling device 20 a plate carrier 250 , in particular an outer disk carrier 250 , a plate carrier 270 , in particular an inner disk carrier 270 , and a disc pack held therebetween 260 on, that of the pressure pot according to the invention 200 the inner coupling device 20 operable (engagement and disengagement) is. The inner disc carrier 270 is in turn connectable to a transmission input shaft which is preferably formed as an outer transmission input shaft. Preferably, the two outer disk carrier 150 . 250 the two coupling devices 10 . 20 rotatably and axially fixed to each other.

The two pressure pots 100 . 200 the coupling devices 10 . 20 are on a (main) hub 30 , z. B. a comparatively short hollow shaft 30 , For example, a rotor 30 , radially mounted, axially guided and fluid-sealed relative to this. - Here, the pressure pot 100 the outer coupling device 10 a pressure piston 110 at / in a pressure room 114 on, by means of which the pressure pot 100 the disk pack 160 can operate. The pressure room 114 is by a pressure line 301 in the hub 30 with an actuating fluid 2 fillable. A restoring force on the pressure pot 100 comes from an energy store 115 in particular a plurality of helical compression springs 115 or a plate spring, in a centrifugal oil room. Preferably, the pressure pot 100 radially on the outside Drucktopffinger, which through the outer disk carrier 150 reach through. If necessary, instead of print-head fingers, a substantially closed outer area of the pressure pot is also possible 100 applicable.

In contrast to the pressure pot 100 points the pressure pot 200 a pressure piston device 202 , ( 210 . 220 ) (see also 2 ), by means of which the pressure pot 200 z. B. two-stage operation (see below). Radial outward, the pressure pot 200 a closed outer area or Drucktopffinger (not shown), which or which at a radially further inside body 204 of the pressure pot 200 is provided or are. Radially inside, the body 204 the pressure piston device 202 on. - The pressure piston device 202 preferably comprises a smaller first, preferably as an annular piston 210 designed, pressure piston 210 and a larger second, preferably also as an annular piston 220 designed, pressure piston 220 , where the two pressure pistons 210 . 220 by means of a connecting web 230 connected to each other. The connecting bridge 230 is a rotation body that holds the two pressure pistons 210 . 220 connects with each other.

The main body 204 of the pressure pot 200 extends in the vicinity of the smaller first pressure piston 210 (not shown), from a central portion of the connecting web 230 (see. 1 and 2 ) or near the larger second plunger 220 (Also not shown) from the plunger device 202 radially outward away. It is of course possible, both pressure pistons 210 . 220 or their piston surfaces 212 . 222 to design the same size, or that the smaller pressure piston 210 with the larger pressure piston 220 swap places. The two pressure pistons 210 . 220 form a double radial bearing for the pressure pot 200 on the hub 30 , being a free on the hub 30 provided pressure pot 200 preferably independently safe on the hub 30 is suspended or sitting, ie does not tend to tilt. Radial inside is the respective pressure piston 210 . 220 by means of a ring seal against the hub 30 fluid-sealed.

The 1 and 2 show with respect to the plunger device 202 , left the axially outer, smaller first piston surface 212 of the pressure piston 210 and on the right the axially inner, larger second piston surface 222 of the pressure piston 220 , Here, the piston surfaces 212 . 222 turn be trained equal or exchange places. - The axially outer first piston surface 212 forms together with a cylindrical outer portion of the hub 30 , a flange 314 the hub 30 and a collar or extension provided thereon a radially shorter first pressure chamber 214 , Instead of the flange 314 with collar or extension can also be another component 314 be provided. Radially inside and radially outside is the pressure piston 210 by means of a respective sealing or sealing device, for. B. a ring seal, on the one hand with respect to the outer portion of the hub 30 (Outer) and on the other hand against the collar or extension (inside) fluid-sealed.

The axially inner second piston surface 222 forms together with an outer section of the hub 30 , another component 324 , z. B. one on the hub 30 fluid-tight disc 324 and an inner portion of the connecting web 330 a radially longer second pressure chamber 224 , Radially inside and radially outside is the pressure piston 220 by means of a respective sealing or sealing device, for. B. a ring seal, on the one hand with respect to the outer portion of the hub 30 (outside) and on the other hand with respect to the inner portion of the connecting web 230 (inside) fluid-sealed. - Between the disc 324 and the first pressure piston 210 is a centrifugal oil room 330 set up, in which preferably an energy store 215 in particular a plurality of helical compression springs 215 or a plate spring for returning the second clutch device 20 located.

According to the invention, the inner coupling device 20 be operated in two stages. - In this case relates to a first stage of the actuation of the coupling device 20 essentially only one clearance of the disk pack 260 , which is bridged or compensated in the first stage. Ie. the pressure pot 200 moves so far in the first stage of the process until the clearance of the disk pack 260 essentially disappears. As a resistance of the preferred corrugated lining plates of the disk set 260 is comparatively low, this is enough already a small piston area 212 of the first pressure piston 210 of the pressure pot 200 and / or a comparatively low fluid pressure of the actuating fluid 2 out.

A second stage of actuating the clutch device 20 allows a sufficiently large contact pressure of the lining plates within the plate pack 260 the coupling device 20 to a desired torque by means of the coupling device 20 to be able to transfer. This is realized by means of the additional piston surface 222 of the second pressure piston 220 of the pressure pot 200 , Ie. the pressure pot 200 moves in the second stage of the process so far until a desired contact pressure in the disk set 260 is realized.

The detailed view of the 2 shows a possible structural design for such a two-stage operation of the inner coupling device 20 , The pressure pot has it 200 over the two piston surfaces 212 . 222 , where in the 2 on the left a smaller piston area 212 and on the right a larger piston area 222 is shown. It is possible to use the two piston surfaces 212 . 222 to design the same size. One in a pressure line 302 the hub 30 existing fluid pressure for actuation of the coupling device 20 initially passes only in the first pressure chamber 214 , which is preferably formed radially shorter than the second pressure chamber 224 ,

The second pressure chamber 224 remains by means of one in the pressure line 320 located (upper) spring-loaded check valve 326 blocked. Ie. for a first fluid pressure of the actuating fluid 2 through which the clearance of the coupling device 20 is the check valve 326 designed so that it does not open. The check valve 326 opens only at a second fluid pressure between the first fluid pressure and a fluid pressure, which is for the compression of the fin pack 260 is needed.

The first fluid pressure in the first pressure chamber 214 starts the pressure pot 200 to move axially, so that the clearance of the coupling device 20 is reduced. A check valve 325 between the centrifugal oil room 330 and the second pressure chamber 224 serves to the second pressure chamber 224 continuously with actuating fluid 2 refill while the pressure pot 200 is shifted due to the first fluid pressure. The check valve 326 is designed so that it opens as soon as a fluid pressure is reached, which has completely removed the clearance (second fluid pressure). When the check valve 326 opens, in addition to the first pressure chamber 214 the second pressure chamber 224 subjected to fluid pressure. As a result, the pressure pot 200 now a much greater force on the disk set 260 exercise. Will the second pressure chamber 224 active, blocks the check valve 325 the disc 324 in the second pressure chamber 224 the connection to the centrifugal oil room 330 so no actuating fluid 2 from the second pressure chamber 224 can escape.

That in the pressure line 302 located (lower) spring-loaded check valve 327 is only when opening the clutch device 20 active and allows backflow of the actuating fluid 2 from the second pressure chamber 224 , - The drawing shows a double clutch 0 in which only the inner coupling device 20 has the two-stage, pressure-reducing operation. Of course, variants of the invention are conceivable in which only the outer coupling device 10 , both coupling devices 10 . 20 , a coupling device of an axial double clutch, both coupling devices of an axial double clutch, a single clutch, etc. with this operation or such a pressure pot 200 are equipped. An advantage of this invention is that both only a small volume flow, and only a small fluid pressure for actuating the coupling device 120 is needed.

LIST OF REFERENCE NUMBERS

0

 Torque transmission device for a vehicle, in particular a drive train of a motor vehicle (passenger car, passenger transport vehicle, ATV (All Terrain Vehicle, off-road vehicle), two-wheeler, trike, quad, commercial vehicle, (heavy) truck, construction vehicle, construction machine, special vehicle, etc., with internal combustion engine, eg B. gasoline / diesel and / or electric motor) -. (Hydrodynamic) (torque) converter, (continuously variable / automatic / manual) transmission, (multiple / double / single) clutch transmission, (axial / radial) (wet / dry running) (multiple / Double / single / friction / multi-disc / multiple / double / single disc -) (powershift / starter / converter / part) clutch, and / or dual mass converter / flywheel, with (more / two- / one-stage) (multi / double / single) (multiple / double / single) damper (device), eg. B. Torsionsschwingungsdämpfer, and / or possibly with (single / double / multiple) absorber (device), z. B. (parallel / trapezoidal) centrifugal pendulum; or assembly and / or combination thereof

1

Multiple / double clutch device of the torque transmission device 0

2

Operating fluid, oil of the multiple clutch device 1 or the coupling device 10 / 20 ; 10 . 20

10

(outer / inner, second / first) clutch device / assembly, eg. B. Partial coupling of a multiple clutch 1 , (Rotation) assembly

20

(inner / outer, first / second) coupling device / assembly, e.g. B. Partial coupling of a multiple clutch 1 , (Rotation) assembly

30

 (Main) hub, (hollow) shaft, rotor, (rotary) component / group

40

Drive plate preferred with plate carrier 150 rotatably connected, (rotational) component / group

100

Pressure pot of the coupling device 10 , (Rotary) component / group

110

Pressure piston of the pressure pot 100 , Ring piston

114

Pressure chamber for pressure piston 110

115

 Energy storage, z. B. helical compression spring (s), plate spring

150

(outer / inner) plate carrier of the coupling device 10 , preferably with plate carrier 250 non-rotatably connected, preferably outer disc carrier (also inner disc carrier possible), clutch input (but also possible coupling output), (rotational) component

160

(Outer / inner) friction device of the multiple clutch 1 , (outer, but also inner) disc pack with outer and inner discs in a multi-disc clutch device 10 , (Rotation) assembly

170

(inner / outer) plate carrier of the coupling device 10 , preferably inner disk carrier (also outer disk carrier possible), coupling output (but also possible coupling output) with a transmission input shaft connectable, (rotational) component

200

Pressure pot of the coupling device 20 , (Rotary) component / group

202

Pressure piston device ( 210 . 220 ) of the pressure pot 200

204

 (Drucktopf-) body

206

closed exterior or Drucktopffinger (not shown) of the pressure pot 200 for actuating the coupling device 20

210

(smaller / larger), (first / second) pressure piston of the pressure piston device 201 , Ring piston

212

(smaller / larger), (first / second) piston surface of the pressure piston 210 , Ring surface / shape

214

 (radially shorter / longer), (first / second) pressure chamber

215

 Energy storage, z. B. helical compression spring (s), plate spring

220

(larger / smaller), (second / first) pressure piston of the pressure piston device 201 , Ring piston

222

(larger / smaller), (second / first) piston surface of the pressure piston 220 , Ring surface / shape

224

 (radially longer / shorter), (second / first) pressure chamber

230

(axial) connecting web between the pressure piston 210 and the plunger 220

250

(outer / inner) plate carrier of the coupling device 20 , preferably with plate carrier 150 non-rotatably connected, preferably outer disc carrier (also inner disc carrier possible), clutch input (but also possible coupling output), (rotational) component

260

(inner / outer) friction device of the multiple clutch 1 , (outer, but also inner) disc pack with outer and inner discs in a multi-disc clutch device 20 , (Rotation) assembly

270

(inner / outer) plate carrier of the coupling device 20 , preferably inner disk carrier (also outer disk carrier possible), coupling output (but also possible coupling output) with a transmission input shaft connectable, (rotational) component

301

Pressure pipe in the hub 30 for actuating the coupling device 10

302

Pressure pipe in the hub 30 for actuating the coupling device 20

314

(further) component, for. B. flange of the hub 30 , to limit the pressure chamber 214

324

(further) component, for. B. Disc on the hub 30 , to limit the pressure chamber 224

325

Check valve in the disc 324

326

Check valve for filling the pressure chamber 224 , preferably anti-parallel to check valve 327

327

Check valve for emptying the pressure chamber 224 , preferably anti-parallel to check valve 326

330

 Fliehölraum

Ax

Axial direction, longitudinal direction, axis of rotation of the crankshaft, the drive train, the torque transmission device 0 , the coupling device 10 . 20 , the pressure pot 100 . 200 , gearbox 0 etc., axial, axial plane

Ra

Radial direction of the crankshaft, the drive train, the torque transfer device 0 , the coupling device 10 . 20 , the pressure pot 100 . 200 , the transmission 0 etc., radial, radial plane

Around

Circumferential direction, circumference of the crankshaft, the drive train, the torque transfer device 0 , the coupling device 10 . 20 , the pressure pot 100 . 200 , the transmission 0 etc., (relative) rotational movements or rotational movements take place in the circumferential direction Um, tangential, tangential plane

Claims (12)

Pressure pot ( 200 ) for a coupling device ( 20 ), in particular for a multiple clutch ( 0 ) with a preferably radial arrangement of two coupling devices ( 10 . 20 ), for a drive train of a vehicle, wherein the pressure pot ( 200 ) a pressure piston device ( 202 ) for displacing the pressure pot ( 200 ) and thus for actuating the coupling device ( 20 ), characterized in that the pressure piston device ( 202 ) two preferably offset piston surfaces ( 212 . 222 ) such that the piston surfaces ( 212 . 222 ) independently with an actuating fluid ( 2 ) can be acted upon. Pressure pot ( 200 ) according to the preceding claim, characterized in that the at least two piston surfaces ( 212 . 222 ): • in the axial direction (Ax) of the pressure pot ( 200 ) offset from each other at the pressure pot ( 200 ) are formed; Substantially coaxial with each other or in the axial direction (Ax) in alignment with the pressure pot ( 200 ) are formed; • each perpendicular to the axial direction (Ax) on the pressure pot ( 200 ) are formed; In the radial direction (Ra) of the pressure pot ( 200 ) offset from each other at the pressure pot ( 200 ) are formed; Essentially at a single axial position (Ax) on the pressure pot ( 200 ) are formed; • have a substantially similar shape, in particular a ring shape; • have substantially the same or different surface area; and / or in the circumferential direction (Um) of the pressure pot ( 200 ) substantially completely at the pressure pot ( 200 ) are circumferentially formed. Pressure pot ( 200 ) according to one of the preceding claims, characterized in that the pressure piston device ( 202 ) two pressure pistons ( 210 . 220 ), on which the two piston surfaces ( 212 . 222 ) are formed, and / or the two piston surfaces ( 212 . 222 ) substantially in two radial planes (Ra) on the two pressure pistons (FIG. 210 . 220 ) are formed, wherein the two pressure piston ( 210 . 220 ) are arranged offset in the axial direction (Ax) parallel to each other. Pressure pot ( 200 ) according to one of the preceding claims, characterized in that a first pressure piston ( 210 / 220 ) and a second pressure piston ( 220 / 210 ) of the pressure pot ( 200 ) by means of a in the axial direction (Ax) and / or radial direction (Ra) extending connecting web ( 230 ) are firmly connected to each other, wherein a main body ( 204 ) of the pressure pot ( 200 ) from the first pressure piston ( 210 / 220 ) or substantially adjacent to the first plunger ( 210 / 220 ), from the connecting bridge ( 230 ) or substantially adjacent to the second pressure piston ( 220 / 210 ) or from the second pressure piston ( 220 / 210 ) extends radially away. Pressure pot ( 200 ) according to one of the preceding claims, characterized in that: • the actuation of the coupling device ( 20 ) an engagement or an engagement and / or disengagement or disengagement of the clutch device ( 20 ); • the first pressure piston ( 210 / 220 ) a smaller, first piston surface ( 212 / 222 ) as the second pressure piston ( 220 / 210 ), which has a larger, second piston surface ( 222 / 212 ); • the connecting bridge ( 230 ) is designed such that with it a second pressure chamber ( 224 / 214 ) of the coupling device ( 20 ), which preferably has a radially larger extent than a first pressure space (FIG. 214 / 224 ) of the coupling device ( 20 ); • the pressure pot ( 200 ) is integrally formed in one piece, simple or integral; and / or the pressure pot ( 200 ) for a coupling device ( 20 ) or a multiple clutch device ( 1 ) is formed according to one of the following claims. Coupling device ( 20 ) or multiple coupling device ( 1 ) for a drive train of a vehicle, in particular a motor vehicle with an internal combustion engine, with a hub ( 30 ) and one on the hub ( 30 ) radially (Ra) mounted and axially (Ax) movable pressure pot ( 200 ), the pressure pot ( 200 ) a pressure piston device ( 202 ) for displacing the pressure pot ( 200 ) and for actuating the coupling device ( 20 ), characterized in that the pressure piston device ( 202 ) two preferably offset from each other pressure piston ( 210 . 220 ) such that the pressure pistons ( 210 . 220 ) independently with an actuating fluid ( 2 ) can be acted upon. Coupling device ( 20 ) or multiple coupling device ( 1 ) according to the preceding claim, characterized in that the hub ( 30 ) and the respective pressure piston ( 210 . 220 ) a first pressure chamber ( 214 / 224 ) and a second pressure chamber ( 224 / 214 ) of the coupling device ( 20 ) or for a coupling device ( 20 ) of the Multiple coupling device ( 1 ) at least partially limit, and the first pressure chamber ( 214 / 224 ) in particular a radially shorter extension than the second pressure chamber ( 224 / 214 ), wherein the first pressure chamber ( 214 / 224 ) preferably further from a flange ( 314 ) the hub ( 30 ) is limited, and / or the second pressure chamber ( 224 / 214 ) preferably further from a disc ( 324 ) on the hub ( 30 ) is limited. Coupling device ( 20 ) or multiple coupling device ( 1 ) according to one of the preceding claims, characterized in that: • the first pressure piston ( 210 / 220 ) a smaller, first piston surface ( 212 / 222 ) as the second pressure piston ( 220 / 210 ), which has a larger, second piston surface ( 222 / 212 ); • the smaller, first piston surface ( 212 / 222 ) for bridging a clearance of the coupling device ( 20 ) and the larger, second piston area ( 222 / 212 ) for the actuation of the coupling device ( 20 ) is trained; • the first pressure chamber ( 214 / 224 ) and the second pressure chamber ( 224 / 214 ) from a common pressure line ( 301 ) in the hub ( 30 ) with the actuating fluid ( 2 ) are available; • the second pressure chamber ( 224 / 214 ) via an anti-parallel connection of two non-return valves ( 326 . 327 ) with the actuating fluid ( 2 ) and the actuating fluid ( 2 ) is emptied again; An opening force of a check valve ( 326 ) for filling the second pressure chamber ( 224 / 214 ) is less than or equal to an opening force of a check valve ( 327 ) for emptying the second pressure chamber ( 224 / 214 ); • in the disc ( 324 ) a check valve ( 325 ), which has a centrifugal oil space ( 330 ) of the coupling device ( 20 ) relative to the second pressure chamber ( 224 / 214 ) opens; and / or the pressure pot ( 200 ) is formed according to one of the preceding claims. Method for actuating a coupling device ( 20 ) a coupling ( 0 ), in particular a coupling device ( 20 ) a multiple clutch ( 0 ), for a drive train of a vehicle, characterized in that the coupling device ( 20 ) is actuated in two stages, wherein in a first stage by means of a pressure pot ( 200 ) of the coupling device ( 20 ) essentially only one clearance of a disk pack ( 260 ) of the coupling device ( 20 ) is bridged, and in a temporal sequence in a second stage essentially a compression of the disk set ( 260 ) by means of the pressure pot ( 200 ) is realized. The method according to the preceding claim, characterized in that the pressure pot ( 200 ) in the first stage of the actuation of the coupling device ( 20 ) with a first fluid pressure of an actuating fluid ( 2 ) is applied, and the pressure pot ( 200 ) in the second stage of the actuation of the coupling device ( 20 ) with a second fluid pressure of the actuating fluid ( 2 ) is applied, wherein the second fluid pressure is preferably greater than the first fluid pressure, and / or the pressure pot ( 200 ) for the first stage of the actuation of the coupling device ( 20 ) a comparatively small first piston surface ( 212 ) and for the second stage of the actuation of the coupling device ( 20 ) a comparatively large second piston surface ( 222 ), wherein the first piston surface ( 212 ) preferably at a first pressure piston ( 210 ) and the second piston surface ( 222 ) preferably at a second pressure piston ( 220 ) of the pressure pot ( 200 ) is trained. Method according to one of the preceding claims, characterized in that: • in the first stage of the actuation of the coupling device ( 20 ) the first fluid pressure of the actuating fluid ( 2 ) at least in a first pressure chamber ( 214 ) of the coupling device ( 20 ) is set up; In the second stage of the actuation of the coupling device ( 20 ) the second fluid pressure of the actuating fluid ( 2 ) at least in a second pressure chamber ( 224 ) of the coupling device ( 20 ) is set up; In the first stage of the actuation of the coupling device ( 20 ) in the second pressure chamber ( 224 ) a fluid pressure is set which is less than the first fluid pressure of the actuating fluid ( 2 ); In the first stage of the actuation of the coupling device ( 20 ) the first fluid pressure or a slightly lower fluid pressure of the actuating fluid ( 2 ) in the second pressure chamber ( 224 ) is set up; In the second stage of the actuation of the coupling device ( 20 ) the second fluid pressure of the actuating fluid ( 2 ) also in the first pressure chamber ( 224 ) is set up; • the pressure pot ( 200 ) is formed according to one of the preceding claims; and / or • the coupling device ( 20 ) is designed according to one of the preceding claims. Torque transmission device ( 0 ), Transmission ( 0 ) or coupling ( 0 ), in particular dual-clutch transmission ( 0 ) or double clutch ( 0 ), for a drive train of a vehicle, characterized in that the torque transmission device ( 0 ), The gear ( 0 ) or the coupling ( 0 ) a pressure pot ( 200 ), a coupling device ( 20 ) or a multiple clutch device ( 1 ) according to one of the preceding claims, and / or a coupling device ( 20 ) or a multiple clutch device ( 1 ) of the torque transmission device ( 0 ), of the transmission ( 0 ) or the clutch ( 0 ) is operable by a method according to any one of the preceding claims, wherein the coupling ( 0 ) preferably as a radial double clutch ( 0 ) and / or as a wet-running or current double clutch ( 0 ), or the transmission ( 0 ) preferably as a dual-clutch transmission ( 0 ) is trained.

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