WO2012062533A1 - Système de changement de rapport manuel pour une boîte de vitesses à plusieurs groupes - Google Patents

Système de changement de rapport manuel pour une boîte de vitesses à plusieurs groupes Download PDF

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Publication number
WO2012062533A1
WO2012062533A1 PCT/EP2011/068070 EP2011068070W WO2012062533A1 WO 2012062533 A1 WO2012062533 A1 WO 2012062533A1 EP 2011068070 W EP2011068070 W EP 2011068070W WO 2012062533 A1 WO2012062533 A1 WO 2012062533A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission
shift
gear
gears
shifting
Prior art date
Application number
PCT/EP2011/068070
Other languages
German (de)
English (en)
Inventor
Eckhardt LÜBKE
Christoph Graswald
Original Assignee
Zf Friedrichshafen Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2012062533A1 publication Critical patent/WO2012062533A1/fr

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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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed 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
    • F16H3/087—Toothed 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
    • F16H3/091—Toothed 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 including a single countershaft
    • F16H3/0915—Toothed 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 including a single countershaft with coaxial input and output shafts
    • 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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/04—Combinations of toothed gearings only
    • F16H37/042—Combinations of toothed gearings only change gear transmissions in group arrangement
    • F16H37/043—Combinations of toothed gearings only change gear transmissions in group arrangement without gears having orbital motion
    • 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
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/04—Ratio selector apparatus
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/70—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for change-speed gearing in group arrangement, i.e. with separate change-speed gear trains arranged in series, e.g. range or overdrive-type gearing arrangements
    • F16H61/702—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for change-speed gearing in group arrangement, i.e. with separate change-speed gear trains arranged in series, e.g. range or overdrive-type gearing arrangements using electric or electrohydraulic control 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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/04—Combinations of toothed gearings only
    • F16H37/042—Combinations of toothed gearings only change gear transmissions in group arrangement
    • F16H37/043—Combinations of toothed gearings only change gear transmissions in group arrangement without gears having orbital motion
    • F16H2037/045—Combinations of toothed gearings only change gear transmissions in group arrangement without gears having orbital motion comprising a separate gearing unit for shifting between high and low ratio range
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0052—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising six forward speeds

Definitions

  • the invention relates to a manual transmission system for a group transmission according to the preamble of patent claim 1.
  • two or three partial transmissions which may be designed as a countershaft transmission or planetary gear, are connected in series in the power flow.
  • a group transmission with two groups in Vorgelegebauweise a three-speed or four-speed main group a sautéebenen compared to conventional multi-step gears can be saved, resulting in space, weight and cost advantages.
  • two or more gearshift devices are used in each gear, i.
  • a switching logic may be provided in which in each of the illustrated gears one of the first group associated synchronization and one of the second group associated synchronization is connected.
  • a group transmission with a main group in winding construction and a downstream area group in conventional stage construction is known.
  • the main group comprises three wheelsets for forward gears and a reversing gear wheel.
  • the area gearbox has two additional wheelsets for forward gears. Due to the multiple use of some wheelsets nine forward gears are shown in the known transmission with a total of six sets of wheels and eight clutches. Two or three speed clutches from both transmission groups are connected in the individual gears.
  • Such a transmission offers considerable potential savings in terms of weight, transmission length and production costs.
  • a manual system is not provided. There is no indication of the risk of malfunctioning due to the simultaneous switching of several synchronizers.
  • a switching device for a stepped transmission in conventional or in a group construction with a manual switching system known in which the opposite within a shift gate and successive gears are assigned to different synchronous switching packets.
  • a conversion device is arranged between the shift lever and the synchronizer switch packages. The conversion device converts the movement of the shift lever into a direction of movement of a shift means that is decoupled from the movement of the shift lever.
  • Switching device are characterized in that the gears associated with a synchronous shift package are not consecutive gears, when switching gears within a shift gate overlapping operations of synchronous switching packages allows, which can achieve a switching time reduction.
  • the conversion device of the known switching device allows the switching of the gears of such a stepped transmission by means of a conventional H-circuit.
  • the disadvantage of this is that in the case of a group transmission with a switching logic that provides several switched synchronizations in one gear, there is the risk of malfunction by a simultaneous switching multiple switching packages in the lever movements.
  • either only one of the transmission groups is switchable with a manual control system, or it is a relatively complex sensor for switching between groups necessary, or there are additional separate switching devices required, or their operation is relatively uncomfortable.
  • group transmissions are still known, which are operated with a guided in a shift gate shift lever, wherein the shift gate is not formed as H-circuit diagram.
  • DE 928 214 B shows a group transmission with a Z-shaped or zigzag-shaped circuit diagram.
  • DE 199 62 390 A1 shows a group transmission with X-shaped shift gates for a main group and cross roads for a split group.
  • Such schematics appear rather illogical and are therefore intuitively difficult for the driver to detect and thus prone to incorrect operation.
  • the present invention seeks to propose a manual shift system with a H-diagram for a group transmission, which allows a free gear selection and is functionally reliable and easy to use.
  • the solution of this problem arises from the features of the main claim, while advantageous embodiments and further developments of the invention are the dependent claims can be removed.
  • the invention is based on the finding that in a group transmission with a shift logic, in which two gear shift devices are connected in each gear, with the proviso that in each shift gate with two opposite gears, a gear shift device is connected in both gears involved, with the aid of an H Circuit diagram can be ensured that the gearshift devices are actuated sequentially.
  • the invention is based on a manual transmission system for a group transmission, wherein the group transmission has at least one split group and a main group, a transmission input shaft, a transmission output shaft, at least one countershaft and a plurality of arranged in Radsatzebenen translations as well as the gear ratios associated gear shifters for shifting gears, with a Shift gate with a Wählgasse and a plurality of shift gates for guiding a shift lever in a logical H-circuit diagram, wherein at least two gear shift devices are connected in the gears, wherein in the shift gates with two opposite gears each one of the gear shift devices is connected in both gears.
  • the invention provides that the switched in both courses of a shift gate gear shift device is switched in a selection movement of the shift lever in the selector gate for selecting the shift gate.
  • the switching system according to the invention results as a further advantage that in circuits in an alley only one gear shift device must be operated, thereby reducing the control and operating costs.
  • the manual switching system is also suitable for a switching logic in which more than two clutches are connected in one gear, wherein in turn one of the clutches is connected in both gears of a shift gate.
  • the shift gates in the shift lever movement in the shift direction to operate according to several gear shift devices.
  • the manual transmission system may be formed, for example, for a group transmission with five ratios and six gear shift devices, with which six forward gears and at least one reverse gear can be displayed.
  • the gearshift devices can advantageously be arranged in double-sided operable shift packages, each with two gearshift devices, and be designed as synchronizers or jaw clutches.
  • the transmission may have a partially progressive gear step.
  • a gear step in which the successive gear steps vary in contrast to a geometric gear step with tend to smaller jumps, whereby the difference in the maximum speed between the gears is approximately constant, comparatively fewer gears are needed to represent a certain total spread of the transmission. Overall, this allows a short and efficient group transmission with a relatively large spread with a conventional 6-speed H-shift image can be easily and safely operated.
  • gear shift devices or shift packets can be shiftable both in the selector gate and in one or more of the shift gates. Accordingly, certain gearshift devices or certain switching packages are switched on the one hand in the selection direction in the selection of a particular lane and on the other in the switching direction in the choice of certain gears other lanes.
  • the hand-shift system is particularly easy to transfer to automated group transmissions.
  • the manual switching system can be connected to a shift-by-wire circuit, in which all switching lever movements are detected electronically and transmitted via a signal by means of a data line, for example a data bus, to a transmission control, which controls the associated actuators.
  • a data line for example a data bus
  • Modern shift-by-wire circuits offer a high degree of functional reliability and ease of use.
  • individual circuit diagrams can be represented thanks to a variable guidance of the shift lever.
  • an H-circuit diagram in which circuits of the individual gearshift devices are triggered in the selector gate and in the shift gates can be implemented relatively easily and inexpensively in a group transmission.
  • FIG. 1 is a schematic representation of a transmission structure of a group transmission
  • Fig. 2 shows a switching logic of the transmission
  • Fig. 3 is a circuit diagram of the transmission with labeling switched
  • a transmission input shaft 4 which is connectable via a starting clutch 3 to the drive shaft of an internal combustion engine 2, an axially disposed behind the transmission input shaft 4 transmission output shaft 5, and an axially parallel thereto arranged countershaft 6.
  • i1 to i5 there are five arranged in Radsatzebenen translations i1 to i5 provided. These are by gear pairs z1 1 / z12, z21 / z22, z32 / z32, z41 / z42, z51 / z52 rotatably on the transmission input shaft 4 or the transmission output shaft 5 and rotatably with these shafts 4, 5 designed as synchronizers gear shift devices A to F.
  • the first two translations i1, i2 form a split group GV.
  • the second translation i2 and the three further translations i3, i4, i5 form a main group HG.
  • the second set of wheels i2 is therefore assigned to both transmission groups GV, HG.
  • the first ratio i1 comprises a idler gear z1 1, which is rotatably mounted on the transmission input shaft 4 and rotatably connected via a first synchronization A with this shaft 4, and one with the idler gear z1 1 intermeshing fixed wheel z12, which rotatably connected to the countershaft 6 is.
  • the second gear ratio i2 comprises a idler gear z21, which is rotatably mounted on the transmission output shaft 5 and a cam gear which is meshed with the idler gear z21. mendes fixed gear z22, which is rotatably connected to the countershaft 6.
  • the idler gear z21 of the second ratio i2 can be connected to the transmission input shaft 4 in a rotationally fixed manner by means of a second synchronization B or can be connected to the transmission output shaft 5 in a rotationally fixed manner by means of a third synchronization C.
  • the first and the second synchronization A, B are formed as a first double-acting synchronous switching package S1 and arranged in a synchronous plane AB between the first two Radsatzebenen or translations i1, i2.
  • the third ratio i3 comprises a loose wheel z31, which is rotatably mounted on the transmission output shaft 5 and rotatably connected via a fourth synchronization D with this shaft 5, and a meshing with the idler gear z31 fixed wheel z32, which is rotatably connected to the countershaft 6.
  • the third and the fourth synchronization C, D are formed as a second double-acting synchronous switching package S2 and arranged in a synchronizing plane C-D between the second and the third translation i2, i3.
  • the fourth gear ratio i4 comprises a idler gear z41, which can be connected in a rotationally fixed manner to the transmission output shaft 5 by means of a fifth synchronization E and is in engagement with an associated fixed gear z42 on the countershaft 6.
  • the fifth translation i5 is designed as a reverse link translation pointer. It comprises a loose wheel z51, which by means of a sixth synchronization F rotatably connected to the transmission output shaft 5, a fixed gear z52 on the countershaft 6, as well as an unillustrated rotatably mounted intermediate wheel to reverse the direction of rotation.
  • the fifth and the sixth synchronization E, F are formed as a third double-acting synchronous switching packet S3 and arranged in a synchronous plane EF between the fourth and the fifth gear ratio i4, i5. No synchronization is arranged between the third and the fourth gear ratio i3, i4, so that the free gap can be used, for example, for a support bearing for the shafts 5, 6.
  • the transmission structure 1 allows a switching logic of FIG. 2.
  • the transmission structure 1 allows a switching logic of FIG. 2.
  • the five translations i1 to i5 six forward gears G1 to G6 and two reverse gears R possible. Of the reverse gears, however, only one is shown.
  • two of the synchronizers A to F are connected.
  • FIG. 3 shows an H-circuit diagram 7 of a manual switching system according to the invention.
  • the synchronizers A to F to be switched are marked.
  • An unillustrated shift lever is guided in a shift gate 8.
  • the circuit diagram 7 of the shift gate 8 has four shift gates 9a, 9b, 9c, 9d, which are interconnected by a selector gate 10.
  • two forward gears G1 and G2, G3 and G4, G5 and G6 are located in a logical arrangement in the three shift gates 9b to 9d.
  • the first shift gate 9a is provided for the reverse gear R.
  • one of the four synchronizers A to E is respectively connected in both gears in the successive gears G1 -G2, G3-G4, G5-G6 which can be selected within one of the three shift gates 9b to 9d.
  • This synchronization A, B or E is switched in the selection of the shift gate 9b, 9c, 9d in the selector gate 10, ie in the selection direction.
  • the second synchronization A, B, C, D is in each case connected in the shift of the gear G1, G2, G3, G4, G5, G6 in the shift gate 9b, 9c, 9d, ie in the switching direction.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

L'invention concerne un système de changement de rapport manuel pour une boîte de vitesses à plusieurs groupes, la boîte de vitesses à plusieurs groupes (1) présentant au moins un groupe doubleur de gamme (GV) et un groupe principal (HG), un arbre d'entrée de boîte de vitesses (4), un arbre de sortie de boîte de vitesses (5), au moins un arbre intermédiaire (6) et plusieurs démultiplications (i1 - i5) disposées dans les plans des jeux de roues ainsi que des dispositifs de changement de rapport (A - F) associés aux démultiplications (i1 - i5) pour le changement des rapports (G1 - G6, R), comprenant un coulisseau de changement de rapport (8) avec une voie de sélection (10) et plusieurs voies de changement de rapport (9a - 9d) pour guider un levier de changement de rapport dans un schéma de changement de rapport logique en H (7), au moins deux des dispositifs de changement de rapport (A - F) étant à chaque fois commutés dans les rapports (G1 - G6, R), l'un des dispositifs de changement de rapport (A - E) étant à chaque fois commuté dans les deux rapports (G1 - G6) dans les voies de changement de rapport (9b - 9d) comprenant deux rapports opposés (G1 - G6). Pour que le système de changement de rapport manuel permette une sélection libre du rapport dans un schéma de changement de rapport en H (7) et soit à la fois de fonctionnement sûr et facile d'utilisation, le dispositif de changement de rapport (A, B, E) de la boîte de vitesses à plusieurs groupes, commuté dans les deux rapports (G1 - G6) d'une voie de changement de rapport (9b - 9d), est, lors d'un mouvement de sélection du levier de changement de rapport, commuté dans la voie de sélection (10) destinée à la sélection de la voie de changement de rapport (9b - 9d).
PCT/EP2011/068070 2010-11-08 2011-10-17 Système de changement de rapport manuel pour une boîte de vitesses à plusieurs groupes WO2012062533A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010043564.3 2010-11-08
DE102010043564A DE102010043564A1 (de) 2010-11-08 2010-11-08 Handschaltsystem für ein Gruppengetriebe

Publications (1)

Publication Number Publication Date
WO2012062533A1 true WO2012062533A1 (fr) 2012-05-18

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ID=45099288

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Application Number Title Priority Date Filing Date
PCT/EP2011/068070 WO2012062533A1 (fr) 2010-11-08 2011-10-17 Système de changement de rapport manuel pour une boîte de vitesses à plusieurs groupes

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DE (1) DE102010043564A1 (fr)
WO (1) WO2012062533A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8850913B2 (en) 2012-07-16 2014-10-07 Zf Friedrichshafen Ag Manual transmission for a motor vehicle

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012204562B4 (de) * 2012-03-22 2016-02-11 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Schalten eines Getriebes
DE102012214430A1 (de) 2012-08-14 2014-02-20 Zf Friedrichshafen Ag Schalteinrichtung für ein Schaltgetriebe
DE102013222977A1 (de) 2013-11-12 2015-05-13 Zf Friedrichshafen Ag Verfahren zur Schaltsteuerung eines automatisierten Schaltgetriebes und Schaltvorrichtung zur Durchführung des Verfahrens
GB2521221A (en) * 2013-12-16 2015-06-17 Daimler Ag Transmission for a vehicle, in particular a commercial vehicle
DE102013226709A1 (de) * 2013-12-19 2015-06-25 Zf Friedrichshafen Ag Gruppengetriebe für ein Kraftfahrzeug
DE102015210328A1 (de) * 2015-06-03 2016-12-08 Zf Friedrichshafen Ag Schaltgetriebe mit Niedriggang- und Hochganggruppe
DE102017201607A1 (de) 2017-02-01 2018-08-02 Zf Friedrichshafen Ag Getriebe und Verfahren zum Betreiben eines Automatikgetriebes

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Publication number Priority date Publication date Assignee Title
DE928214C (de) 1951-12-09 1955-05-26 Walter Dipl-Ing Ehrlenspiel Mehrgruppen-Zahnraederwechselgetriebe fuer Kraftfahrzeuge mit Gangschaltkupplungen
EP1034384A1 (fr) * 1997-11-29 2000-09-13 ZF FRIEDRICHSHAFEN Aktiengesellschaft Bo te de vitesses a 12 rapports en version 2x3x2
DE19962390A1 (de) 1999-12-23 2001-06-28 Zahnradfabrik Friedrichshafen Verfahren zur Schaltung eines Getriebes
DE10137356A1 (de) 2001-07-31 2003-02-13 Zahnradfabrik Friedrichshafen Fahrzeuggetriebe
DE10224062C1 (de) * 2002-05-31 2003-07-17 Daimler Chrysler Ag Verfahren zum Betrieb eines automatisierten Zahnräderwechselgetriebes
EP1521928B1 (fr) 2002-07-11 2008-01-02 Zf Friedrichshafen Ag Dispositif de changement de vitesses
WO2008145467A1 (fr) 2007-05-26 2008-12-04 Zf Friedrichshafen Ag Boîte de vitesses multi-étagée mécanique utilisée dans des véhicules à moteur
DE102009046345A1 (de) 2009-11-03 2011-05-05 Zf Friedrichshafen Ag Schaltvorrichtung für ein Mehrgruppengetriebe

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Publication number Priority date Publication date Assignee Title
DE2822617A1 (de) * 1978-05-24 1979-11-29 Daimler Benz Ag Schaltgetriebe in vorgelegebauart
DE10120060A1 (de) * 2001-04-24 2002-10-31 Zahnradfabrik Friedrichshafen Fahrzeuggetriebe
DE102007040911A1 (de) * 2007-08-30 2009-03-05 Daimler Ag Gruppengetriebe für ein Kraftfahrzeug

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE928214C (de) 1951-12-09 1955-05-26 Walter Dipl-Ing Ehrlenspiel Mehrgruppen-Zahnraederwechselgetriebe fuer Kraftfahrzeuge mit Gangschaltkupplungen
EP1034384A1 (fr) * 1997-11-29 2000-09-13 ZF FRIEDRICHSHAFEN Aktiengesellschaft Bo te de vitesses a 12 rapports en version 2x3x2
DE19962390A1 (de) 1999-12-23 2001-06-28 Zahnradfabrik Friedrichshafen Verfahren zur Schaltung eines Getriebes
DE10137356A1 (de) 2001-07-31 2003-02-13 Zahnradfabrik Friedrichshafen Fahrzeuggetriebe
DE10224062C1 (de) * 2002-05-31 2003-07-17 Daimler Chrysler Ag Verfahren zum Betrieb eines automatisierten Zahnräderwechselgetriebes
EP1521928B1 (fr) 2002-07-11 2008-01-02 Zf Friedrichshafen Ag Dispositif de changement de vitesses
WO2008145467A1 (fr) 2007-05-26 2008-12-04 Zf Friedrichshafen Ag Boîte de vitesses multi-étagée mécanique utilisée dans des véhicules à moteur
DE102009046345A1 (de) 2009-11-03 2011-05-05 Zf Friedrichshafen Ag Schaltvorrichtung für ein Mehrgruppengetriebe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8850913B2 (en) 2012-07-16 2014-10-07 Zf Friedrichshafen Ag Manual transmission for a motor vehicle

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