WO2016192725A1 - Drehmomentwandler - Google Patents
Drehmomentwandler Download PDFInfo
- Publication number
- WO2016192725A1 WO2016192725A1 PCT/DE2016/200249 DE2016200249W WO2016192725A1 WO 2016192725 A1 WO2016192725 A1 WO 2016192725A1 DE 2016200249 W DE2016200249 W DE 2016200249W WO 2016192725 A1 WO2016192725 A1 WO 2016192725A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- turbine wheel
- torque converter
- impeller
- abutment surface
- rotation
- 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
- F16H—GEARING
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
-
- 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
- F16H—GEARING
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
- F16H2045/0205—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type two chamber system, i.e. without a separated, closed chamber specially adapted for actuating a lock-up 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
- F16H—GEARING
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
- F16H2045/0221—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means
- F16H2045/0247—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means having a turbine with hydrodynamic damping means
-
- 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
- F16H—GEARING
- F16H45/00—Combinations of fluid gearings for conveying rotary motion with couplings or clutches
- F16H45/02—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
- F16H2045/0273—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type characterised by the type of the friction surface of the lock-up clutch
- F16H2045/0278—Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type characterised by the type of the friction surface of the lock-up clutch comprising only two co-acting friction surfaces
Definitions
- the invention relates to a torque converter.
- the invention relates to a hydrodynamic torque converter in a device for transmitting torque.
- a device for transmitting torque is provided.
- the device is located between a drive motor and a transmission and includes a hydrodynamic torque converter.
- the torque converter is formed by a pump and a turbine wheel, which are rotatably mounted about a common axis of rotation. Between the two wheels of the torque converter is a fluid, usually an oil, canceled, which couples the two wheels fluid dynamic with each other. The greater a difference in speed between the two wheels, the more torque is transferred between them.
- a start-up or stopping process of the above-mentioned motor vehicle can be supported.
- a lock-up clutch is provided, which is designed as a friction clutch.
- the impeller and the turbine wheel each have an axial contact surface, which face each other axially. If the two wheels are pressed axially against one another, the contact surfaces engage one another and form a frictional connection.
- a hydrodynamic torque converter comprises an impeller and a turbine wheel, which are rotatably mounted about a common axis of rotation, and a fluid in a region between the impeller and the turbine wheel.
- a first axial abutment surface is formed on the impeller and a second axial abutment surface is formed on the turbine wheel, so that frictional engagement can be formed between the impeller and the turbine wheel when the impeller and the turbine wheel are pressed axially against one another.
- One of the contact surfaces is designed to be flexible in order to conform to the other contact surface under axial pressure load.
- the contact surfaces form a lock-up clutch for the torque converter.
- the torque converter with the lock-up clutch is sometimes also called “integrated torque converter” (iTC).,
- iTC integrated torque converter
- the closing and the opening of the lock-up clutch can be made by the flexible contact surface quieter, gentler or more controllable
- Adjustment behavior, an axial offset or a tumbling motion can be positively influenced by the flexibly mounted contact surface.
- the turbine wheel is preferably radially outwardly connected to a housing in which the turbine wheel is received.
- the housing encloses the fluid in the area of the impeller.
- the contact surfaces are usually arranged on a radial outer side of hydrodynamic guide elements on the impeller or on the turbine wheel.
- the flexible abutment surface comprises a sheet which is circumferentially folded.
- the fold preferably passes around the axis of rotation and the unloaded sheet usually forms a V-shape in longitudinal section.
- the plate can be easily integrated with other elements of the impeller or the turbine wheel. Due to the circumferential fold, the flexibility of the contact surface can be easily produced. It is preferred that the folding angle is less than 180 °, so that the unloaded seam is open. The portion of the sheet forming one of the abutment surfaces can thereby be elastically deformed in an improved manner when the impeller and the turbine wheel are pressed axially against one another.
- the sheet is thinned in the region of a bending edge of the fold.
- the rigidity of the contact surface can be maintained, while at the same time the flexibility and flexibility of the contact surface is increased.
- the spring action of the sheet can also be increased.
- the sheet is repeatedly folded in alternating directions.
- the sheet can take an S or Z-shape, which has a plurality of circumferential bending edges or folds, which can each contribute to the flexibility of attachment of the contact surface on the respective wheel.
- the flexible abutment surface comprises a separate element connected to the pump or turbine wheel. This makes it easier to design the pump or turbine wheel for its hydrodynamic function, while the separate element facilitates the flexible attachment of the contact surface.
- the separate element is fluid-tightly connected to the pump or turbine wheel.
- one of the wheels at the same time represents a hydraulic piston, which causes the axial contact pressure between the impeller and the turbine wheel.
- the abutting contact surfaces may include a predetermined angle with the axis of rotation. In particular, this angle can be 90 °, so that the contact surfaces lie in the plane of rotation when they are pressed axially against one another. However, the abutment surfaces can also enclose a different angle with the axis of rotation when pressed against each other.
- the mutually abutting bearing surfaces are spherically bent with respect to the axis of rotation.
- one of the abutment surfaces may be convex and the other concave.
- a friction element may be attached to one or both contact surfaces.
- the engagement behavior of the contact surfaces can thereby be improved or adjusted.
- FIG. 1 shows a longitudinal section through a device for transmitting torque with a torque converter.
- FIGS. 2-7 represent variants of flexible contact surfaces on the torque converter of FIG. 1.
- FIG. 1 shows a longitudinal section through a device 100 for transmitting torque.
- the device 100 is in particular designed for use in a drive train, for example of a motor vehicle.
- the device 100 may in particular be part of a converter, a double clutch, a starting clutch or a power-shift clutch.
- the device 100 comprises an axis of rotation 105 around which an impeller 1 10 and a turbine wheel 1 15 of a hydrodynamic torque converter 120 are rotatably arranged.
- baffles 125 are each formed on the impeller 1 10 and the turbine wheel 1 15, which axially oppose each other.
- a fluid 130 usually an oil that hydrodynamically couples the two wheels 1 10 and 1 15 together.
- an optional stator 135 is provided to influence the flow of the fluid 130.
- the impeller 1 10 is connected on its radially outer side with a housing 140 which receives the turbine wheel 15 and the fluid 130.
- the impeller 1 10 and the housing 140 represent an input side 145 of the device 100 for transmitting torque.
- An output side 150 can be directly or, as shown in FIG. 1, by means of an elastic element 155 with the turbine wheel 15 of FIG Torque converter 120 may be coupled.
- a lock-up clutch 160 is provided in a region which is preferably located radially outside of the baffles 125.
- a first axial abutment surface 165 on the impeller 1 10 and a second axial abutment surface 170 on the turbine wheel 15 are formed.
- the contact surfaces 165, 170 are axially opposite each other and can be brought into frictional engagement with each other by the impeller 1 10 and the turbine wheel 1 15 axially moved toward each other or axially pressed against each other.
- the turbine wheel 1 15 is axially movable relative to the impeller 1 10 and the housing 140.
- the turbine wheel 1 15 acts with respect to the fluid 130 in the housing 140 as a hydraulic piston, which is pressed axially in the direction of the impeller 1 10, when the hydraulic pressure on the pump wheel 1 10 axially facing away from the side.
- the fluid 130 is forced radially outward and causes such hydraulic pressure.
- the lock-up clutch 160 is hydraulically closed so that the abutment surfaces 165, 170 engage each other and reduce slippage between the impeller 110 and the turbine wheel 15, ideally down to zero.
- the second abutment surface 170 of the turbine wheel 15 is rigid or rigid with respect to Rotation axis 105 carried out while the first contact surface 165 is connected by means of a flexible member 175 with the impeller 1 10 and the housing 140.
- the first contact surface 165 can be rigidly attached and the second contact surface 170 can be flexibly attached.
- the flexible element 175 can also be omitted if the respective abutment surface 165, 170 is flexibly formed on the wheel 1 10, 15 assigned to it.
- On one of the abutment surfaces 165, 170 may optionally be provided a friction element 180.
- the surface along which the abutment surfaces 165 and 170 engage each other when the two wheels 1 10, 1 15 are axially pressed against each other can be designed in different ways.
- the surface may be flat and include a predetermined angle with the axis of rotation 105. If this angle is 90 °, the surface lies in the plane of rotation.
- the abutment surfaces 165, 170 can also be configured correspondingly concave and convex to each other. Other superimposed and expedient curves can also be used.
- the contact surfaces 165 and 170 it is preferable to design the contact surfaces 165 and 170 such that the least possible leakage occurs between the contact surfaces 165, 170 even when the lockup clutch 160 is stationary or rotating at low speed. Closing the lock-up clutch 160 by building up a hydraulic pressure of the fluid 130 under the influence of centrifugal force ("centrifugal oil”) is facilitated thereby.
- FIGS. 2 to 7 show variants of flexible contact surfaces 165, 170 on the torque converter 120 of FIG. 1.
- FIGS. 2 to 7 includes an upper view labeled A, showing the opened lock-up clutch 160, and a lower view labeled B showing the closed lock-up clutch 160.
- the variants shown in FIGS. 2 to 7 can be combined with one another and with the embodiment shown in FIG. Basically, in In all embodiments, the first contact surface 165 and the second contact surface 170 are also interchanged with each other. In the following, therefore, only one variant will be described, a person skilled in the art will also remove the respective mirror-image variant without effort.
- Figure 2 shows an embodiment in which the second axial bearing surface 170 is integrally formed on a metal sheet which is part of the turbine wheel 15 1.
- the sheet is bent circumferentially about the axis of rotation 105, whereby a circumferential fold 205 is formed.
- the folding angle between portions of the sheet on different sides of the fold 205 at unloaded sheet (Figure 2A) is less than 180 °.
- the sheet may be thinned, so that its material thickness is reduced. Due to the geometry of the assembly, the effective bending length of the sheet can be extended, resulting in a further elastic effect of the sheet.
- the second contact surface 170 faces that sheet metal section which is farther away from the axis of rotation 105 along the metal sheet.
- Figure 3 shows an embodiment based thereon, in which two folds 205 are provided around which the sheet of the turbine wheel 15 is folded.
- the bending directions are opposite to each other, so that the illustrated Z-shaped folding results. It is preferred that both folding angles are smaller than 180 °.
- FIG. 4 shows an embodiment similar to that of FIG. 1, but with the flexible element 175 attached to the turbine wheel 15.
- the flexible element 175 may in particular comprise a metal sheet.
- FIG. 5 shows a further embodiment corresponding to that of FIG. 1.
- FIG. 6 shows a variant of the embodiment shown last, in which the flexible element 175 is attached to the impeller 1 10 or the housing 140 and carries the first axial abutment surface 165.
- the corresponding thereto second contact surface 170 is rigidly executed on the turbine wheel 1 15.
- FIG. 7 shows yet another embodiment similar to that of FIG. 4, wherein, however, the abutting bearing surfaces 165, 170 (FIG. 7B) lie in a plane of rotation about the axis of rotation 105.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Gearings (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680023975.3A CN107532700B (zh) | 2015-06-05 | 2016-05-25 | 变扭器 |
US15/579,513 US10557538B2 (en) | 2015-06-05 | 2016-05-25 | Torque converter |
DE112016002517.3T DE112016002517A5 (de) | 2015-06-05 | 2016-05-25 | Drehmomentwandler |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015210363.3 | 2015-06-05 | ||
DE102015210363.3A DE102015210363A1 (de) | 2015-06-05 | 2015-06-05 | Drehmomentwandler |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016192725A1 true WO2016192725A1 (de) | 2016-12-08 |
Family
ID=56194190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2016/200249 WO2016192725A1 (de) | 2015-06-05 | 2016-05-25 | Drehmomentwandler |
Country Status (4)
Country | Link |
---|---|
US (1) | US10557538B2 (de) |
CN (1) | CN107532700B (de) |
DE (2) | DE102015210363A1 (de) |
WO (1) | WO2016192725A1 (de) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150027110A1 (en) * | 2013-07-23 | 2015-01-29 | Schaeffler Technologies Gmbh & Co. Kg | Torque converter including an elastic element preloading an axially movable turbine |
DE102014224114A1 (de) * | 2013-12-03 | 2015-06-03 | Schaeffler Technologies AG & Co. KG | Drehmomentwandler mit integrierter Dreischeiben-Überbrückungskupplung |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19626685A1 (de) * | 1995-07-19 | 1997-01-23 | Luk Getriebe Systeme Gmbh | Hydrodynamischer Drehmomentwandler |
JPH09147381A (ja) * | 1995-11-22 | 1997-06-06 | Pioneer Electron Corp | 情報読み取り装置 |
DE10024191B4 (de) * | 1999-05-21 | 2012-06-28 | Schaeffler Technologies Gmbh & Co. Kg | Drehmomentübertragungseinrichtung |
AU2003254612A1 (en) | 2002-06-27 | 2004-01-19 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Torque transmission device |
DE102009016414A1 (de) | 2008-04-23 | 2009-10-29 | Zf Friedrichshafen Ag | Kupplungsanordnung, insbesondere für den Antriebsstrang eines Fahrzeugs |
KR102030682B1 (ko) * | 2012-10-04 | 2019-10-10 | 섀플러 테크놀로지스 아게 운트 코. 카게 | 터빈 피스톤 추진 경로 |
EP3198171B1 (de) * | 2014-09-23 | 2020-03-25 | Schaeffler Technologies AG & Co. KG | Drehmomentwandler mit axial verschiebbarer turbine und mit membranfeder verbundenem reibungsmaterial |
US9752667B2 (en) * | 2014-12-05 | 2017-09-05 | Valeo Embrayages | Torque converter and hydrokinetic torque coupling device having turbine-piston lockup clutch, and related methods |
US10151376B2 (en) * | 2017-04-07 | 2018-12-11 | Schaeffler Technologies AG & Co. KG | Torque converter including turbine piston and multi-plate clutch assembly |
-
2015
- 2015-06-05 DE DE102015210363.3A patent/DE102015210363A1/de not_active Withdrawn
-
2016
- 2016-05-25 CN CN201680023975.3A patent/CN107532700B/zh active Active
- 2016-05-25 DE DE112016002517.3T patent/DE112016002517A5/de active Pending
- 2016-05-25 US US15/579,513 patent/US10557538B2/en active Active
- 2016-05-25 WO PCT/DE2016/200249 patent/WO2016192725A1/de active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150027110A1 (en) * | 2013-07-23 | 2015-01-29 | Schaeffler Technologies Gmbh & Co. Kg | Torque converter including an elastic element preloading an axially movable turbine |
DE102014224114A1 (de) * | 2013-12-03 | 2015-06-03 | Schaeffler Technologies AG & Co. KG | Drehmomentwandler mit integrierter Dreischeiben-Überbrückungskupplung |
Also Published As
Publication number | Publication date |
---|---|
US10557538B2 (en) | 2020-02-11 |
CN107532700B (zh) | 2021-06-08 |
CN107532700A (zh) | 2018-01-02 |
US20180149251A1 (en) | 2018-05-31 |
DE102015210363A1 (de) | 2016-12-08 |
DE112016002517A5 (de) | 2018-02-22 |
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