WO2009003583A1 - Drehmomentübertragungseinrichtung - Google Patents
Drehmomentübertragungseinrichtung Download PDFInfo
- Publication number
- WO2009003583A1 WO2009003583A1 PCT/EP2008/004887 EP2008004887W WO2009003583A1 WO 2009003583 A1 WO2009003583 A1 WO 2009003583A1 EP 2008004887 W EP2008004887 W EP 2008004887W WO 2009003583 A1 WO2009003583 A1 WO 2009003583A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- damper
- transmission device
- torque transmission
- hub
- drive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- 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
- F16H2045/0221—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
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- 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 transmission device with a arranged in the drive train of a motor vehicle for torque transmission between a drive unit and a gear turbine hub of a torque converter torque converter, which is coupled with the interposition of a torsional vibration damper via a Wandlerüberbrückungs- coupling with a damper hub to which a damper flange is attached, the is arranged in the axial direction between a primary and a secondary pressure chamber.
- the object of the invention is to improve the transmission capability of the lockup clutch in a torque transmission device according to the preamble of claim 1 in a simple manner.
- the object is in a torque transmission device with a arranged in the drive train of a motor vehicle for torque transmission between a drive unit and a transmission turbine hub of a torque converter, which is coupled with the interposition of a torsional vibration damper via a lockup clutch with a damper hub to which a damper flange is attached, in axial direction between a primary and a secondary pressure chamber, achieved in that the damper flange has at least one through hole which connects the primary with the secondary pressure chamber to allow a pressure equalization between the pressure chambers.
- the damper flange represents the output part of the torsional vibration damper.
- the through hole allows dynamic pressure equalization between the secondary and the primary pressure chamber.
- a preferred embodiment of the torque transmitting device is characterized in that the through hole is disposed in the vicinity of a radially inner peripheral edge of the damper flange.
- the damper flange is integrally connected at its inner peripheral edge with the damper hub.
- a further preferred embodiment of the torque transmission device is characterized in that the through hole is arranged radially within windows, which are recessed for energy storage of the torsional vibration in the damper flange.
- the windows are also called spring windows.
- the energy stores are preferably helical compression springs.
- damper hub is integrally connected to the damper flange.
- the cohesive connection is preferably designed as a circumferential weld.
- the weld joint preferably connects the radially inner peripheral edge of the damper flange to the damper hub.
- the damper hub in turn is non-rotatably connected to one or the transmission input shaft.
- a further preferred embodiment of the torque transmission device is characterized in that the through hole is arranged in the region of radial grooves which are provided in a drive-near housing wall of the torque converter.
- the radial grooves serve to reduce the back pressure in the primary pressure chamber.
- the through hole is disposed on a damper flange pitch diameter smaller than the value of an axial distance multiplied by twenty between an input side end of a transmission input shaft or the damper hub and a torque converter housing side drive wall ,
- the through hole should be arranged in the damper flange on the smallest possible effective diameter.
- a further preferred embodiment of the torque transmission device is characterized in that a plurality of through holes are arranged on the effective diameter of the damper flange. Preferably, the through holes are evenly distributed over the effective diameter of the damper flange.
- a further preferred embodiment of the torque transmission device is characterized in that the through holes in the sum have a cross-sectional area of at least 15 square millimeters. This size has proven to be particularly advantageous in the context of the present invention.
- a further preferred exemplary embodiment of the torque transmission device is characterized in that the individual through-holes each have a cross-sectional area of at least 5 square millimeters. Thus, particularly good results were achieved in the context of the present invention.
- the accompanying figure 1 shows a torque transmission device according to the invention in half section.
- FIG. 1 shows a part of a drive train 1 of a motor vehicle.
- a drive unit 3 in particular an internal combustion engine, from which a crankshaft originates, and a transmission 5, a hydrodynamic torque converter 6 is arranged.
- the crankshaft of the internal combustion engine 3 is rotatably connected to a housing 10 of the torque converter 6 via a drive plate 8, which is also referred to as a flex plate.
- the housing 10 of the torque converter 6 is rotatable about an axis of rotation 12 and equipped with a housing wall 14 close to the drive and a housing wall 15 remote from the drive.
- a starter ring gear 17 is fixed on the crankshaft 16, a starter ring gear 17 is fixed by means of a radially outwardly extending connecting plate part 16.
- the drive-away housing wall 15 is summarized in a structural unit with a pump 20 of the hydrodynamic torque converter 6 summarized.
- the drive-close housing wall is also referred to as a converter cover.
- a turbine wheel 21 is arranged, which is fastened by means of rivet connection elements to a turbine hub 22.
- the turbine hub 22 is rotatably arranged to an input shaft 23 of the transmission 5.
- a stator 24 is arranged in a known manner.
- a lockup clutch 26 with a torsional vibration damper 27 is also arranged in a known manner.
- the lockup clutch 26 includes a piston 28 which is rotatably and axially displaceably mounted radially on the outside of the turbine hub 22.
- the piston 28 has radially outside a friction surface, which faces the internal combustion engine 3 and with respect to a further friction surface is arranged, which is provided on the side facing away from the engine 3 side of the drive housing wall 14. Between the two friction surfaces, a friction plate 29 is arranged, which is rotatably connected to a drive plate 30.
- the drive plate 30 is coupled in a known manner with the interposition of energy storage elements 33, in particular of helical compression springs, with a damper flange 35 of the torsional vibration damper 27.
- the damper flange 35 is integrally connected to a damper hub 38 by means of a welded connection 36.
- the damper hub 38 in turn is radially inwardly rotatably connected to one end of the input shaft 23 of the transmission 5.
- the drive plate 30 and the damper flange 35 have to receive the energy storage 33 on four evenly distributed over the circumference window.
- the lockup clutch 26 in the closed state establishes a mechanical connection between the impeller 20 and the turbine wheel 21.
- the piston 28 of the lockup clutch 26 is hydraulically actuated.
- the piston 28 moves in the axial direction on the drive-close housing wall 14, which is also referred to as a converter cover.
- the friction plate 29 is clamped between the converter cover 14 and the piston 28. Then the lockup clutch 26 is closed.
- an opening pressure space is formed between the piston 28 and the converter cover 14, which comprises a primary pressure chamber 41 and a secondary pressure chamber 42.
- the primary pressure chamber 41 is arranged in the axial direction between the converter cover 14 and the damper flange 35.
- the secondary pressure chamber 42 is arranged in the axial direction between the damper flange 35 and the drive plate 30 and the piston 28.
- the two pressure chambers 41, 42 communicate with each other via a through hole 44, which is recessed in the damper flange 35.
- a through hole 44 which is recessed in the damper flange 35.
- the through-hole 44 which connects the primary pressure chamber 41, which flows through when the converter clutch is closed, to the secondary pressure chamber 42, which does not flow through, the formation of undesired eddies can be prevented or at least minimized.
- the quality of the reduction of vortex formation depends largely on the effective diameter on which the connection can be made, and in what form this is carried out there.
- the present invention teaches to arrange the recess or the through hole in the damper flange to a smallest possible effective diameter D of the damper flange 35.
- a dependence between the effective diameter D and an axial elongation b between the drive end of the transmission input shaft 23 and the damping hub 38 and the drive housing wall 14 are determined.
- a range of effective diameter D has proven to be smaller than twenty times the product of the expansion b, for the respective speed range.
- a plurality of through holes are distributed uniformly or unevenly on the effective diameter D.
- the through-holes 44 have a cross-sectional area of at least 15 square millimeters.
- the cross-sectional area of a single through-hole 44 is not less than 5 square millimeters.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Gearings (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112008001506.6T DE112008001506C5 (de) | 2007-07-05 | 2008-06-18 | Drehmomentübertragungseinrichtung |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007031384.7 | 2007-07-05 | ||
| DE102007031384 | 2007-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009003583A1 true WO2009003583A1 (de) | 2009-01-08 |
Family
ID=39831998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2008/004887 Ceased WO2009003583A1 (de) | 2007-07-05 | 2008-06-18 | Drehmomentübertragungseinrichtung |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE102008028904A1 (de) |
| WO (1) | WO2009003583A1 (de) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006056747A1 (de) * | 2005-12-17 | 2007-06-28 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Drehmomentübertragungseinrichtung |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5667042A (en) | 1994-04-26 | 1997-09-16 | Luk Lamellen Und Kupplungsbau Gmbh | Torque transmitting apparatus with hydrokinetic torque converter |
| JP2002147563A (ja) | 2000-11-15 | 2002-05-22 | Exedy Corp | トルクコンバータ |
| DE102004010262C5 (de) | 2003-03-05 | 2016-02-18 | Schaeffler Technologies AG & Co. KG | Drehmomentwandler |
| WO2007054049A1 (de) | 2005-11-10 | 2007-05-18 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydrodynamische drehmomentwandler-vorrichtung für einen kraftfahrzeug- antriebsstrang |
-
2008
- 2008-06-18 WO PCT/EP2008/004887 patent/WO2009003583A1/de not_active Ceased
- 2008-06-18 DE DE102008028904A patent/DE102008028904A1/de not_active Withdrawn
- 2008-06-18 DE DE112008001506.6T patent/DE112008001506C5/de not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006056747A1 (de) * | 2005-12-17 | 2007-06-28 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Drehmomentübertragungseinrichtung |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112008001506B4 (de) | 2018-12-27 |
| DE102008028904A1 (de) | 2009-01-08 |
| DE112008001506A5 (de) | 2010-07-29 |
| DE112008001506C5 (de) | 2024-05-16 |
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