DE102009014705B4 - Double clutch - Google Patents

Double clutch Download PDF

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Publication number
DE102009014705B4
DE102009014705B4 DE200910014705 DE102009014705A DE102009014705B4 DE 102009014705 B4 DE102009014705 B4 DE 102009014705B4 DE 200910014705 DE200910014705 DE 200910014705 DE 102009014705 A DE102009014705 A DE 102009014705A DE 102009014705 B4 DE102009014705 B4 DE 102009014705B4
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Germany
Prior art keywords
output shaft
gear
transmission
dual
clutch
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Active
Application number
DE200910014705
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German (de)
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DE102009014705A1 (en
Inventor
Carsten Dr. Bünder
Muhammed Awad Dr. Muhammed
Stefan Raisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magna PT BV and Co KG
Original Assignee
Getrag Getriebe und Zahnradfabrik Hermann Hagenmeyer GmbH und Cie
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Priority to DE200910014705 priority Critical patent/DE102009014705B4/en
Publication of DE102009014705A1 publication Critical patent/DE102009014705A1/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/006Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by either one of the parallel flow paths
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H55/00Elements with teeth or friction surfaces for conveying motion; Worms; Pulleys; Sheaves
    • F16H55/02Toothed members; Worms
    • F16H55/14Construction providing resilience or vibration-damping
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/0006Vibration-damping or noise reducing means specially adapted for gearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/093Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
    • F16H2003/0931Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts each countershaft having an output gear meshing with a single common gear on the output shaft
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H2200/00Transmissions for multiple ratios
    • F16H2200/003Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0052Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising six forward speeds

Abstract

A dual clutch transmission (14) having a first input shaft (24) and a second input shaft (26) and at least one output shaft (28, 30) connected to said input shafts (24, 26) via wheelsets adapted to establish respective gear ratios (1 6, R) and each having a loose wheel (42, 44) and a fixed wheel (41, 43), wherein at least one of the loose wheels (42, 44) is rotatably mounted on the output shaft (28, 30), characterized between the one loose wheel (42, 44) and the output shaft (28, 30) a damping means is arranged, which is adapted to damp relative rotational movements between the one idler gear (42, 44) and the output shaft (28, 30).

Description

  • The present invention relates to a dual-clutch transmission according to the preamble of claim 1, as disclosed, for example, in document "G. Lechner, H. Naunheimer, vehicle transmission, 1st edition, 1994, Springer Verlag Berlin, Heidelberg, New York "is known.
  • Dual-clutch transmissions tend to clacking (so-called click-clack). This leads to a problem regarding gear noise (NVH - noise, vibration, harshness).
  • From the document DE 10 2006 008 207 A1 is a method for reducing unwanted noise in a parallel shift known, in particular rattle noise in an inactive part transmission of a parallel transmission. In this document, it is proposed to close the clutch of the inactive transmission, when a gear is engaged in this, partially for the transmission of a small torque to the input shaft.
  • The document EP 1 950 469 A1 discloses a method for controlling a dual-clutch transmission, wherein the pre-selection of the target gear is prevented or reversed to prevent vibration excitations in the non-active sub-transmission in dependence of at least one parameter, preferably an operating parameter of the drive and / or the dual-clutch transmission.
  • Finally, the document reveals DE 102 23 226 A1 a dual-clutch transmission with a transmission impact noise damping system. Again, it is determined by means of a parameter, whether a condition is present, which can expect a gear noise or not. Depending on the condition, the clutches of the dual clutch are activated.
  • Accordingly, the object of the invention is to reduce click noise in a double-clutch transmission in a simple manner.
  • This object is achieved by a dual-clutch transmission according to claim 1.
  • Preferred embodiments are specified in the subclaims.
  • Dual-clutch transmissions show an increased NVH sensitivity (transmission noise) with regard to the response to drive train excitations, so-called click-clack. Said drive train excitations can both from the transmission input -. B. by vibrations of the engine in the engine mounts or by jerky closing and / or opening the clutch - as well as the transmission output - z. B. by braking - act on the transmission.
  • The invention represents a hardware-side solution.
  • In the prior art can be reduced by sensitive coupling control the amplitude and thus perception of the transmission noise. In unfavorable drive train design, unfavorable engine suspensions or lack of opportunities for sensitive clutch control software measures may not be sufficient.
  • The problem of clicking noises occurs, for example, when drive power is transmitted via a gear stage (eg gear stage 1). If in this case unwanted vibrations (which may be, for example, less than 10 Hz) are introduced into the output shaft (this can be done by the drive or from the side of the output) transmits a already in the switched state idler gear another gear (z B. gear ratio 2) these vibrations or oscillations on the free sub-transmission. As a result, the input shaft of the free partial transmission is excited, and the associated components can produce noise. The sounds may be gear noise or even noise due to axial strokes (since the gears are generally helical gears).
  • The problem occurs both in dry and wet running disconnect couplings on the transmission input.
  • By means of the dual-clutch transmission according to the invention, these noises can be damped.
  • In this case, for example, a frictional engagement (formed, for example, by a coating) and / or damping element, which may be formed as a plastic part or the like, acts between the idler gear of the preselected gear stage of the free subtransmission and the associated output shaft (in the example described above, the idler gear of the second corridor). In this way it can be prevented that the unwanted oscillations are transmitted to the free partial transmission via this idler gear and the associated fixed gear. At least the problem can be alleviated by this.
  • An axial tension can be achieved, for example, by an axially acting spring (such as a corrugated spring) on the axially opposite side of the loose wheel.
  • The cause of the so-called click-clack noise is the largely undamped oscillation of the preselected gear in the non-active partial transmission.
  • The object of the invention is to hinder the free vibration by introducing suitable damping measures and thus to reduce the NVH sensitivity of the transmission.
  • Preferably, the idler gears on the relevant shaft, in the illustrated case the transmission output shaft, acted upon by an axial force and pressed against an existing or vorzusehenden federal government. The created friction point acts as a damping element due to the oscillating excitation and the existing game.
  • The axial force can z. B. by mechanical preloading by means of discs or corrugated springs, by active pressing with the help of Schaltaktorik or by suitable design and dimensioning of the Einlagenrastierung the synchronizing unit.
  • It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.
  • Embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description. Show it:
  • 1 a schematic longitudinal sectional view in settlement by an inventive dual-clutch transmission; and
  • 2 a detail II of the 1 ,
  • In 1 is a powertrain 10 shown. The powertrain 10 has a drive motor 12 and a dual-clutch transmission 14 on. The dual-clutch transmission 14 has a first disconnect clutch 16 and a second disconnect clutch 18 on. Furthermore, the dual-clutch transmission includes a first partial transmission for the gear stages 1, 3, 5, and a second partial transmission for the gear stages 2, 4, 6, R.
  • A first input shaft 24 is with the first disconnect clutch 16 connected. A second input shaft 26 is with the second disconnect clutch 18 connected.
  • The dual-clutch transmission 14 also has an output shaft 28 and a second output shaft 30 on. The output shafts 28 . 30 stand with an input member of the differential 32 in connection.
  • For the gear stages 1, 5 is an actuator 34 intended. For the gears 2, 6 is an actuator 36 intended. For the grade 3 is an actuator 38 intended. For the gears 4, R is an actuator 40 intended.
  • A festrad 41 the second gear is on the second input shaft 26 arranged. A loose wheel 42 the second speed stage is mounted on the first output shaft. A festrad 43 the first gear is with the first input shaft 24 connected. A loose wheel 44 the first gear is on the first output shaft 28 stored.
  • 2 shows a detail II of 1 , at 48 is shown a radial shoulder of the first output shaft. Furthermore, a damping element 50 between the radial shoulder 48 and the idler wheel 42 arranged. An axial force 52 braces the idler gear 42 and the first output shaft 28 ,
  • In the illustrated dual-clutch transmission 10 are damping elements 50 assigned to the idler gears of gears 1 and 2 as well as R. Furthermore, between the idler gears of the gear stages 3 and 4 and between the idler gears of the gear stages 5 and 6 also such a damping element 50 be arranged.
  • Preferably, a damping element is assigned to the lower gear stages, for example the gear stages 1 and 2 or the gear stages 1, 2 and 3. In these gear ratios, the clacking noises described above are the most problematic since the natural frequencies of these gear ratios are lowest here.
  • The elements shown in the figures are listed in the attached list of reference numerals. LIST OF REFERENCE NUMBERS 1 38 Actuator 3 2 39 3 40 Actuator 4 / R 4 41 Fixed gear 2nd gear 5 42 Idler gear 2nd gear 6 43 Fixed gear 1st gear 7 44 Idler gear 1st gear 8th 45 9 46 10 powertrain 47 11 48 Radial shoulder of 28 12 drive motor 49 13 50 damping element 14 Double clutch 51 15 52 axial force 16 1. Disconnect 17 18 2. Disconnect 19 20 1st partial transmission (1/3/5) 21 22 2nd partial transmission (2/4/6 / R) 23 24 1. input shaft 25 26 2nd input shaft 27 28 1. output shaft 29 30 2. Output shaft 31 32 differential 33 34 Actuator 1/5 35 36 Actuator 2/6 37

Claims (4)

  1. Double clutch ( 14 ) with a first input shaft ( 24 ) and a second input shaft ( 26 ) and at least one output shaft ( 28 . 30 ) connected to the input shafts ( 24 . 26 ) is connected via wheelsets which serve to establish respective gear stages (1-6, R) and in each case one idler gear ( 42 . 44 ) and a fixed wheel ( 41 . 43 ), wherein at least one of the loose wheels ( 42 . 44 ) on the output shaft ( 28 . 30 ) is rotatably mounted, characterized in that between the one loose wheel ( 42 . 44 ) and the output shaft ( 28 . 30 ) a damping means is arranged, which is adapted to relative rotational movements between the one loose wheel ( 42 . 44 ) and the output shaft ( 28 . 30 ) to dampen.
  2. Double-clutch transmission according to claim 1, characterized in that between two on the output shaft ( 28 . 30 ) mounted loose wheels ( 42 . 44 ) and the output shaft ( 28 . 30 ) each have a damping agent ( 50 ) is arranged, which is adapted to relative rotational movements between the respective loose wheel ( 42 . 44 ) and the output shaft ( 28 . 30 ) to dampen.
  3. Dual-clutch transmission according to claim 2, characterized in that the two on the output shaft ( 28 . 30 ) rotatably mounted loose wheels ( 42 . 44 ) different partial transmissions ( 20 . 22 ) of the dual-clutch transmission ( 14 ) assigned.
  4. Dual-clutch transmission according to one of claims 1 to 3, characterized in that between the one loose wheel ( 42 . 44 ) and the output shaft ( 28 . 30 ) a frictional engagement is established.
DE200910014705 2009-03-27 2009-03-27 Double clutch Active DE102009014705B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200910014705 DE102009014705B4 (en) 2009-03-27 2009-03-27 Double clutch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910014705 DE102009014705B4 (en) 2009-03-27 2009-03-27 Double clutch

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DE102009014705A1 DE102009014705A1 (en) 2010-10-14
DE102009014705B4 true DE102009014705B4 (en) 2011-05-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013019321A1 (en) 2013-11-20 2015-05-21 GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmhH & Cie KG Shaft Losradanordnung and motor vehicle transmission hereby
WO2020020527A1 (en) 2018-07-27 2020-01-30 Audi Ag Method for suppressing noises in a dual clutch transmission for a motor vehicle, and dual clutch transmission for a motor vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361686A1 (en) * 1988-09-28 1990-04-04 Eaton Corporation Manual transmission and gear rattle damper therefor
DE4329851A1 (en) * 1992-09-03 1994-03-10 Borg Warner Automotive Gear transmission with anti-chatter system
DE10223226A1 (en) * 2001-06-01 2003-02-20 Nissan Motor Dual clutch transmission with gear impact noise damping system
DE10328482A1 (en) * 2002-06-27 2004-01-15 Aft Atlas Fahrzeugtechnik Gmbh Gear train comprises two meshing gears with interacting surface friction plates to prevent rattling
DE102006008207A1 (en) * 2005-03-16 2006-09-28 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Method for removing unwanted noise in a parallel switching gear mechanism comprises bringing a drive shaft of a motor selectively in torque interaction with the output shaft via one of the partial gears and a closed coupling
EP1950469A1 (en) * 2007-01-26 2008-07-30 Getrag Ford Transmissions GmbH Method and device for controlling a double clutch transmission

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361686A1 (en) * 1988-09-28 1990-04-04 Eaton Corporation Manual transmission and gear rattle damper therefor
DE4329851A1 (en) * 1992-09-03 1994-03-10 Borg Warner Automotive Gear transmission with anti-chatter system
DE10223226A1 (en) * 2001-06-01 2003-02-20 Nissan Motor Dual clutch transmission with gear impact noise damping system
DE10328482A1 (en) * 2002-06-27 2004-01-15 Aft Atlas Fahrzeugtechnik Gmbh Gear train comprises two meshing gears with interacting surface friction plates to prevent rattling
DE102006008207A1 (en) * 2005-03-16 2006-09-28 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Method for removing unwanted noise in a parallel switching gear mechanism comprises bringing a drive shaft of a motor selectively in torque interaction with the output shaft via one of the partial gears and a closed coupling
EP1950469A1 (en) * 2007-01-26 2008-07-30 Getrag Ford Transmissions GmbH Method and device for controlling a double clutch transmission

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DE-Buch: G. Lechner, H. Naunheimer: Fahrzeuggetriebe, 1. Auflage, 1994, Springer Verlag Berlin Heidelberg New York *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013019321A1 (en) 2013-11-20 2015-05-21 GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmhH & Cie KG Shaft Losradanordnung and motor vehicle transmission hereby
EP2913560A1 (en) 2013-11-20 2015-09-02 GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG Shaft idler assembly and vehicle transmission with the same
WO2020020527A1 (en) 2018-07-27 2020-01-30 Audi Ag Method for suppressing noises in a dual clutch transmission for a motor vehicle, and dual clutch transmission for a motor vehicle
DE102018212595A1 (en) * 2018-07-27 2020-01-30 Audi Ag Method for suppressing noise in a double clutch transmission for a motor vehicle and double clutch transmission for a motor vehicle

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OP8 Request for examination as to paragraph 44 patent law
R020 Patent grant now final

Effective date: 20110806

R081 Change of applicant/patentee

Owner name: MAGNA PT B.V. & CO. KG, DE

Free format text: FORMER OWNER: GETRAG GETRIEBE- UND ZAHNRADFABRIK HERMANN HAGENMEYER GMBH & CIE KG, 74199 UNTERGRUPPENBACH, DE

Owner name: GETRAG B.V. & CO. KG, DE

Free format text: FORMER OWNER: GETRAG GETRIEBE- UND ZAHNRADFABRIK HERMANN HAGENMEYER GMBH & CIE KG, 74199 UNTERGRUPPENBACH, DE

R082 Change of representative

Representative=s name: RAUSCH, GABRIELE, DIPL.-PHYS. DR.RER.NAT., DE

R081 Change of applicant/patentee

Owner name: MAGNA PT B.V. & CO. KG, DE

Free format text: FORMER OWNER: GETRAG B.V. & CO. KG, 74199 UNTERGRUPPENBACH, DE

R082 Change of representative

Representative=s name: RAUSCH, GABRIELE, DIPL.-PHYS. DR.RER.NAT., DE