EP2976550A1 - Boîte de vitesses de véhicule - Google Patents

Boîte de vitesses de véhicule

Info

Publication number
EP2976550A1
EP2976550A1 EP14704810.2A EP14704810A EP2976550A1 EP 2976550 A1 EP2976550 A1 EP 2976550A1 EP 14704810 A EP14704810 A EP 14704810A EP 2976550 A1 EP2976550 A1 EP 2976550A1
Authority
EP
European Patent Office
Prior art keywords
planetary gear
gear set
transmission
planet carrier
input shaft
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.)
Withdrawn
Application number
EP14704810.2A
Other languages
German (de)
English (en)
Inventor
Johannes Kaltenbach
Peter Ziemer
Kai Borntraeger
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.)
ZF Friedrichshafen AG
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 EP2976550A1 publication Critical patent/EP2976550A1/fr
Withdrawn legal-status Critical Current

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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/62—Gearings having three or more central gears
    • F16H3/66—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/006—Toothed 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
    • 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
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H2003/442—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion comprising two or more sets of orbital gears arranged in a single plane
    • 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
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H2003/445—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion without permanent connection between the input and the set of orbital gears
    • 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
    • F16H2200/0056—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising seven forward speeds
    • 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
    • F16H2200/006—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising eight forward speeds
    • 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
    • F16H2200/0078—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratio comprising twelve or more forward speeds
    • 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
    • F16H2200/0082—Transmissions for multiple ratios characterised by the number of reverse speeds
    • F16H2200/0086—Transmissions for multiple ratios characterised by the number of reverse speeds the gear ratios comprising two reverse speeds
    • 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
    • F16H2200/0082—Transmissions for multiple ratios characterised by the number of reverse speeds
    • F16H2200/0095—Transmissions for multiple ratios characterised by the number of reverse speeds the gear ratios comprising four reverse speeds
    • 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
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
    • F16H2200/201—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with three sets of orbital gears
    • 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
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
    • F16H2200/2012—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with four sets of orbital gears
    • 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
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
    • F16H2200/2015—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with five sets of orbital gears
    • 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
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2048—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with seven engaging 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2053—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with nine engaging 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2058—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with eleven engaging 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2061—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with twelve engaging 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/2094—Transmissions using gears with orbital motion using positive clutches, e.g. dog clutches
    • 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
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/2097—Transmissions using gears with orbital motion comprising an orbital gear set member permanently connected to the housing, e.g. a sun wheel permanently connected to the housing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00—Hybrid electric vehicles, HEVS
    • Y10S903/902—Prime movers comprising electrical and internal combustion motors
    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/904—Component specially adapted for hev
    • Y10S903/909—Gearing
    • Y10S903/91—Orbital, e.g. planetary gears
    • Y10S903/911—Orbital, e.g. planetary gears with two or more gear sets

Definitions

  • the invention relates to a vehicle transmission according to the preamble of patent claim 1.
  • Double clutch transmissions can also be designed as a group transmission.
  • Such group transmissions have a multiple-speed main group, usually in countershaft design, and effective as a split gearbox Vorschaltxx and / or effective as a range gear rear-mounted in countershaft or planetary construction. As a result, a multiplication of the number of gears of the transmission can be achieved.
  • DE 10 2004 014 081 A1 shows such a dual-clutch transmission with only one transmission input shaft, in which three planetary gear sets and two frictionally engaged and a plurality of form-locking switching elements are arranged, wherein the frictional switching elements for switching different power paths and the positive-locking switching elements for setting different translation stages in the power paths are effective, and in which a total of seven forward gears and one reverse gear are available. In a portion of the gears traction interruption-free gear changes by means of frictional switching elements are feasible.
  • From DE 10 2010 028 026 A1 discloses a hybrid powertrain for a vehicle with an internal combustion engine and one or more electric machines is known in which a gear in countershaft design has two partial transmissions. One or both partial transmissions one or each associated with an electric machine. At least one electric machine of a partial transmission is operatively connected via a positive switching element with the internal combustion engine.
  • the applicant's unpublished DE 10 2012 201 366 A1 shows a hybrid powertrain for a motor vehicle, having an internal combustion engine and at least one electric machine, in which a transmission has at least one transmission input shaft, one transmission output shaft and three planetary gear sets, with two between a drive and the second planetary gear set Power paths or partial transmission are each formed with a fixed input gear ratio, and in which the first planetary gear is assigned to the first or the second power path.
  • the driveaway electric machine is associated with the first power path and can be brought into operative connection with the transmission input shaft or the internal combustion engine via a dog clutch or claw brake.
  • the second planetary gear set is connectable to the first and second power paths.
  • the third planetary gear set is in turn connectable to the second power path and the second planetary gear set as well as drivingly connected on the output side to the transmission output shaft.
  • the invention has the object to provide a vehicle transmission, which allows a comparatively large number of traction-free switchable gears, which is inexpensive to produce, and which can be used for conventional and hybrid powertrains.
  • the invention is based on the finding that a vehicle transmission consisting of several planetary gear sets, which can be coupled to one another, can be operated by a suitable connection to two transmission input shafts in an internal combustion engine drive train and in a hybrid drive train, wherein the transmission input shafts via separating clutches or separating brakes to the drive machine or the prime movers can be coupled.
  • the planetary gear sets allow a large number of gears in a compact design that manages with relatively few wheel planes.
  • Two transmission input shafts can be used in particular to form a dual-clutch transmission with two independent power paths, so that a power shiftable, sequential gear sequence can be realized.
  • a hybrid drive By connecting an electric machine to one of the two transmission input shafts, a hybrid drive can be realized.
  • a switchable coupling The performance paths with each other can also extend the translation and drive options.
  • the invention is based on a vehicle transmission with a drive shaft, with a first and a second transmission input shaft, with at least one separating element which is assigned to the second transmission input shaft, with a main shaft, with an output shaft and with at least one first, second and third planetary gearset, which comprise at least in each case a ring gear, a sun gear and a planet carrier with planetary gears as elements, as well as with a plurality of switching elements for switching gear ratios or drive connections.
  • the two transmission input shafts are each assigned a partial transmission, and one of the two partial transmissions has at least the first planetary gear set and the other of the two partial transmissions has at least the second planetary gear set.
  • the first planetary gear is the two transmission input shafts drive technology upstream, wherein a first of the elements of the first planetary gear, which is effective as the drive element, the drive side directly or indirectly connected to the drive shaft or connectable and the transmission side means the at least one separating element with the second transmission input shaft is connectable, wherein a second of the elements of the first planetary gear, which is effective as its output element, the transmission side connected to the first transmission input shaft or connectable, wherein the first transmission input shaft with the second transmission input shaft or at least with the Main shaft is connectable, wherein the two transmission input shafts are each operatively connected to one or both of the second and third planetary gear sets, and in which the main shaft with the output shaft or at least mi t is connected to one of the elements of the third planetary gear set, and that at least seven sequentially power-shiftable forward gears are switchable by means of the two partial transmissions, wherein one of these forward gears is a direct gear or an overdrive gear.
  • a vehicle transmission which can be used both in a drive train of a hybrid vehicle (hybrid transmission) and as a conventional power shift transmission, which has a relatively large number of gears and a relatively simple and compact design.
  • the gears of the various embodiments of this vehicle transmission are completely or at least largely power-shiftable, resulting in a comfortable driving operation.
  • the vehicle transmission has two input shafts, each of which forms two independent power paths or partial transmissions with one of the first two planetary gear sets, wherein one gear can be preselected in the respective load-free partial transmission, while the respective other partial transmission currently transmits the applied load.
  • two independent power paths are switchable between the drive and the second planetary gear set.
  • a third planetary gear set downstream of the power paths in terms of drive technology can be used flexibly with the two partial transmissions individually or together in operative connection.
  • the proposed vehicle transmission is operable as a two-input shaft transmission, for example, with two input friction clutches or an input clutch and an input brake for selectively connecting the partial transmissions, wherein the drive torque of an internal combustion engine is transmitted to the respective partial transmission.
  • one of the two partial transmissions can be driven by an electric motor directly by an electric machine, wherein a positive coupling can fulfill the function of a separating or coupling element to the other partial transmission and / or to an internal combustion engine.
  • a positive coupling can fulfill the function of a separating or coupling element to the other partial transmission and / or to an internal combustion engine.
  • a reversing gear for a reversal of rotation for the realization of reverse gear ratios can be provided and used at various points in the proposed transmission structure. Furthermore, the arrangement allows a demand coupling of the two partial transmission with each other, which is advantageously used in particular for the realization of direct gears and / or Overdrive réellen.
  • the largest gear is preferably switchable as a direct gear or overdrive gear.
  • the vehicle transmission according to the invention is thus very flexibly insertable into a hybrid drive train, a dual-clutch transmission drive train, a group transmission drive train or combinations thereof both in the passenger and in the utility vehicle area.
  • the vehicle transmission is designed as a dual-clutch transmission, with a first separating element and a second separating element, which are designed as friction clutches, that the first friction clutch is connected on the input side to the ring gear of the first planetary gear, which as the output element is effective that the first friction clutch is connected on the output side to the first transmission input shaft, that the second friction clutch is connected on the input side to the planet carrier of the first planetary gear, which is effective as its drive element, and that the second friction clutch is connected on the output side to the second transmission input shaft ,
  • the vehicle transmission can be designed as a dual-clutch transmission with two partial transmissions in planetary design.
  • the drive shaft, the two friction clutches with the two transmission input shafts, the main shaft and the output shaft and the planetary gear sets may preferably be in a compact, coaxial arrangement in which a plurality of wave levels are superposed, on which switching elements are arranged, which for variable coupling of transmission elements or Shafts of the wheelsets of shift actuators are actuated.
  • the proposed transmission structure allows a gear sequence in which the gears can be, for example, geometrically stepped, that is, with an increasing difference in the shifting speed of the maximum speed in the gears.
  • the load transition from the respective active gear to the following gear can be determined by an over- cutting opening and closing of the two friction clutches or separating elements take place, wherein traction interruption-free gear changes can be realized.
  • a judged as advantageous Basisradsatz arrangement for such a dual-clutch transmission can be realized in that the three planetary gear sets are switchable by means of a first, a second and a third switching element with two switching positions and by means of a fourth switching element with a switching position,
  • the ring gear in the first planetary gear set, can be connected to the first transmission input shaft by means of the first separating element, the sun gear is fixed or lockable on a non-rotatable component, and the planet carrier can be connected to the second transmission input shaft by means of the second separating element, that in the second planetary gear set the ring gear by means of the first switching element with the first transmission input shaft and by means of the second switching element with the second transmission input shaft is connected, the sun gear is fixed or detectable on a rotationally fixed component, and the planet carrier by means of the second switching element with the second transmission input shaft and by means of the third switching element with the planet carrier the third planetary gear set is connectable,
  • the sun gear by means of the third switching element with the planet carrier of the second planetary gear set is connectable and by means of the first switching element with the first transmission input shaft is connected, and the planet carrier is connected to the output shaft .
  • the seventh gear is switchable as a direct gear, which is switchable by means of the second separating element, the second switching element and the third switching element,
  • the eighth gear is an overdrive gear, which is switchable by means of the first separating element and the fourth switching element, wherein by the fourth switching element element a direct connection of the first transmission input shaft to the main shaft can be produced.
  • a switching element may comprise both a single and a plurality of switching devices combined to form so-called switching packets.
  • a switching position is understood to be a position of a switching element in which a non-positive connection of two components exists or is produced by the switching element.
  • a switching element with, for example, two switch positions can therefore alternately produce or release a first or a second non-positive connection.
  • a switching element also has a neutral position in which it is positioned connectionless.
  • the switching elements can be designed as inexpensive form-locking claw switching elements.
  • the first planetary gearset belongs to the first sub-transmission defined by the first friction clutch and the first transmission input shaft
  • the second planetary gearset belongs to the second sub-transmission defined by the second friction clutch and the second transmission input shaft. Since in each case one of the elements of the planetary gear, namely the sun gear, in the first and the second planetary gear set to a non-rotatable component is detected or at least detectable, and in each case a second element, namely the ring gear, connected to the first or second transmission input shaft or connectable, the two first planetary gear sets act as input constants of their partial transmissions with a respective fixed transmission ratio.
  • a power-shiftable sequential gear sequence results from combining the Planetenradsatzüber aciden, such that the respective sequence can be selected without load and the load transition by deactivating the respective one power path and activating the other power path via the separating elements or friction clutches.
  • the translation of the first planetary gearset of the first transmission input shaft is connected upstream of drive technology, is formed by the direct connection of the first transmission input shaft via the main shaft to the output shaft in this arrangement not the direct gear but the overdrive gear.
  • the fourth switching element is required for the production of the direct connection of the first transmission input shaft with the main shaft and with the, in this first embodiment with the main shaft fixedly connected output shaft. This switching element is required in this embodiment, only for the preparation of this direct connection.
  • the overdrive gear has only low drag losses. This is achieved by the main shaft is guided directly to the output, the second planetary gear and its switchable input and output side coupling are realized on higher wave levels, ie on wave planes, which coaxially over a through the drive shaft, the first transmission input shaft, the main shaft and the output shaft defined wave plane lie.
  • the planetary gear sets can be designed as a simple Minusget ebe, ie as a planetary gear with a negative state translation, the state translation is given by the gear ratio of two planetary gear elements at feststorem planet carrier and receive the numbers of teeth of internal gears ring gears or wheels according to the standard standard negative sign.
  • the two rotating in the case of stationary translation elements, ie ring gear and sun gear, have opposite directions of rotation. If, however, the planet carrier used as input or output element and one of the other two elements, such as the sun, held, resulting in the same direction of rotation between the drive and output.
  • the three planetary gear sets can be switched by means of the first, second and third shift element with two shift positions each and by means of the fourth shift element with a shift position
  • the ring gear in the first planetary gear set, can be connected to the first transmission input shaft by means of the first separating element, the sun gear is fixed or lockable on a non-rotatable component, and the planet carrier can be connected to the second transmission input shaft by means of the second separating element, that in the second planetary gear set the ring gear by means of the first switching element with the first transmission input shaft and by means of the second switching element with the second transmission input shaft is connected, the sun gear is fixed or detectable on a rotationally fixed component, and the planet carrier by means of the second switching element with the second transmission input shaft and by means of the third switching element with the planet carrier the third planetary gear set is connectable,
  • the sun gear by means of the third switching element with the planet carrier of the second planetary gear set is connectable and by means of the first switching element with the first transmission input shaft is connected, and the planet carrier is connected to the output shaft .
  • the seventh gear can be switched as a direct gear, which is switchable by means of the second disconnecting element and the second shifting element as well as the third shifting element, wherein the eighth gear is an overdrive gear, which is switchable by means of the first separating element and by means of the second, third and fourth switching element, wherein by means of the fourth switching element, a connection of the first transmission input shaft to the second transmission input shaft can be produced.
  • an overdrive gear is generated by a coupling of the two partial transmission instead of a direct connection of the first transmission input shaft to the main shaft.
  • a wave plane can be saved in the region of the main shaft between the second and third planetary gear set.
  • the three planetary gear sets are switchable by means of the first, second and third switching element, each with two switching positions,
  • the ring gear in the first planetary gear set, can be connected to the first transmission input shaft by means of the first separating element, the sun gear is fixed or lockable on a non-rotatable component, and the planet carrier can be connected to the second transmission input shaft by means of the second separating element, that in the second planetary gear set the ring gear by means of the first switching element with the first transmission input shaft and by means of the second switching element with the second transmission input shaft is connectable, the sun gear is fixed or detectable on a non-rotatable component, and the planet carrier by means of second switching element with the second transmission input shaft and by means of the third switching element with the planet carrier of the third planetary gear set is connectable,
  • the sun gear by means of the third switching element with the planet carrier of the second planetary gear set is connectable and by means of the first switching element with the first transmission input shaft and the planet carrier is connected to the output shaft .
  • the seventh gear is a direct gear, which is switchable by means of the second separating element and by means of the second and third switching element.
  • seven forward gears are switchable in this Basisradsatz with only three double shift elements. Since a fourth switching element is required only for the partial transmission coupling in eighth gear, can be constructed by simply omitting this switching element, a particularly compact and lightweight seven-speed dual-clutch transmission.
  • the seventh gear is the highest gear in this transmission as a direct gear switchable.
  • a further switching element is arranged, by means of which in the third planetary gear, the ring gear is alternately releasably lockable to a rotationally fixed component or connectable to the planet carrier.
  • connection of the ring gear of the third planetary gear set can be performed by an additional switching element as a detachable connection.
  • the ring gear is detected.
  • the circuit of a block circulation of the third planetary gear set are made possible. As a result, unnecessary bearing losses of freely moving wheels can be avoided in the courses concerned.
  • the block circulation can be achieved in that the additional switching element in addition to the switching position for detecting the ring gear, a second switching position for connecting two elements of the planetary, for example, the ring gear with the planet carrier having.
  • the additional switching element ensures in this switching position defined by the block circulation speed ratios on the third planetary, without being self-load.
  • switching elements which are never closed simultaneously in the possible or at least in the preferred switching schemes, can be combined to form switching elements with a plurality of switching positions, which are actuated alternately via a single actuator, as switching packets.
  • double-sided or double-acting shift elements each with two shift positions and an intermediate neutral position in various transmissions, are frequently used.
  • the transmission structure of the invention also allows triple switching elements. Accordingly, it can be provided that, in particular in the second embodiment of the Basisradsatzes, for example, the respective first and fourth switching elements are summarized in a single switching element with three switching positions summarized. This is possible because the fourth shift element is needed only in the highest gear for the partial transmission clutch. This results in an additional space and weight advantage.
  • a further space advantage can be achieved in that the second planetary gear set is arranged radially above the third planetary gear, wherein these two planetary gear sets are constructed axially nested one inside the other. This can save a wheel plane and thus the transmission structure can be shortened axially.
  • a first separating element and a second separating element are arranged, wherein the first separating element is designed as a brake, by means of which the sun gear of the first planetary gear on a non-rotatable member (GH) is braked or solvable by this that the second separating element is designed as a friction clutch, which is connected on the input side to the planet carrier of the first planetary gear set, which is effective as the drive element, and the output side is connected to the second transmission input shaft, and wherein the ring gear of the first planetary gear set, which as its output element is effective, is connected to the first transmission input shaft.
  • the first separating element is designed as a brake, by means of which the sun gear of the first planetary gear on a non-rotatable member (GH) is braked or solvable by this that the second separating element is designed as a friction clutch, which is connected on the input side to the planet carrier of the first planetary gear set, which is effective as the drive element, and the output side is connected to the second transmission input shaft, and
  • a friction clutch and a brake may alternatively be used.
  • the first planetary gear set is effective as an input constant of the first subtransmission.
  • each brake is closed and thus the sun gear braked and opened the second clutch while activating the gears of the second partial transmission in each case the second clutch closed and the brake for load-free preselection of the respective subsequent gear is solved.
  • the brake thus assumes the function of the first separating element.
  • a circuit diagram of the gearbox bes may be the same in both embodiments, ie with two friction clutches or with a friction clutch and a brake.
  • another simple planetary gear set may be arranged in the same, which is effective as a reversing gear between the drive and output direction reversal.
  • the reversing wheel set may be integrated at different locations in the transmission structure.
  • a fourth planetary which is effective as a Wenderadsatz
  • a fifth switching element which has two switching positions, arranged axially in front of the first planetary gear and upstream of this drive technology are, wherein in the fourth planetary gear, the ring gear is connected to the planet carrier of the first planetary gear, the sun gear is connected to the drive shaft, and the planet carrier by means of the fifth switching element alternately lockable on a non-rotatable component or with the sun gear of the fourth planetary gear set is connectable.
  • the Wenderadsatz is therefore at the transmission input, in the power flow before the first planetary gear and the separating elements, integrated in the transmission.
  • the eight reverse gears are sequentially power-shiftable via the two disconnect couplings.
  • the fifth shift element is for switching between the reverse ratios and the forward gear ratios.
  • This arrangement allows eight reverse gears, which can be translated relatively short.
  • the reverse gears can have about 1.5 times as high a ratio as the corresponding forward gears.
  • reverse gears can be realized, which generate a very low driving speed when idling of an engine designed as an internal combustion engine, so that with completely closed friction clutch and without accelerator pedal operation a comfortable, sensitive rear maneuvering al- lein by pressing the brake pedal is possible. Because of the short translation of the drive torque is in the reverse gears, a torque limit of the engine useful to limit the load on the transmission.
  • a fourth planetary gear which is effective as a Wenderadsatz
  • a fifth switching element which has two switching positions, axially disposed between the first planetary gear set and the second planetary gear set
  • the ring gear by means of the second switching element is alternately connected to the ring gear or the planet carrier of the second planetary gear set
  • the sun gear of the fourth planetary gear set is connected to the second transmission input shaft
  • the planet carrier by means of Fifth switching element alternately lockable on a non-rotatable component or connectable to the sun gear of the fourth planetary gear set.
  • Gear jump compared to the forward gears may have.
  • the reverse gears are realized in this arrangement, all over the same friction clutch or the same partial transmission and thus not power shiftable. However, by changing the load-carrying friction clutch shifting under load between a reverse gear and a forward gear is possible.
  • a fourth planetary gear which is effective as a Wenderadsatz
  • a fifth switching element which has two switching positions, axially disposed between the first planetary gear set and the second planetary gear set and are arranged upstream of the second planetary gear set, wherein in the fourth planetary gear, the ring gear by means of the second switching element is alternately connectable to the ring gear or the planet carrier of the second planetary gear set, the sun rad of the fourth planetary gear netenradsatzes is connected to the second transmission input shaft, and the planet carrier by means of the fifth switching element alternately lockable on a non-rotatable component or with the sun gear of the fourth planetary gear set is connectable.
  • a fourth planetary which is effective as a Wenderadsatz
  • a fifth switching element which has a switching position, arranged axially between the second planetary gear set and the third planetary gear and the second planetary gear set are arranged downstream of the drive, that the fifth switching element and the second switching element are combined into a single switching element with three switching positions, that in the fourth planetary gear, the ring gear is connected to the planet carrier of the second planetary gear set, the sun gear by means of the fifth switching element with the second transmission input shaft is connectable, and wherein the planet carrier is detected or detectable together with the sun gear of the second planetary gear set on a non-rotatable component.
  • this gear arrangement allows only two reverse gears.
  • a separate fifth switching element can be saved, since the function for switching from the forward gears in the reverse gears in the existing second switching element can be integrated as a third switching position, which reduces the cost and space requirements.
  • the first and fourth switching elements can be combined into a single switching element with three switching positions.
  • the transmission structure according to the invention with two partial transmissions or with two power paths via two transmission input shafts also allows a simple implementation in a hybrid powertrain.
  • the vehicle transmission may be formed as a so-called hybrid transmission, wherein it is provided that the second transmission input shaft to the rotor an electric machine is drivingly connected, that a first separating element and a second separating element are arranged, wherein the first separating element is designed as a friction clutch, by means of which the drive shaft with the planet carrier of the first planetary gear set, which is effective as the drive element, connectable, and wherein the second separating element is designed as a form-locking coupling, by means of which the planet carrier of the first planetary gear set can be connected to the second transmission input shaft in a controlled manner.
  • the second transmission input shaft may be drivingly connected to the rotor of an electric machine.
  • the electric motor By the electric motor then a purely electric motor driven driving is possible in the second part of the transmission.
  • the first partial transmission can be operated by internal combustion engine.
  • a friction clutch can be arranged on the second transmission input shaft, a positive coupling, via which the electric machine with the planet carrier, so the drive element of the first planetary gear set is connectable. This allows an electric motor and combustion engine combined driving operation. Due to the switchable connection between the electric machine and the internal combustion engine, the known hybrid functions are also possible, such as charging a battery, boosting and starting the internal combustion engine by the electric machine.
  • a friction clutch is arranged at the transmission input in this embodiment.
  • a possible shift pattern for this hybrid transmission, with a load-shiftable gear sequence may correspond to a shift pattern of a transmission according to the embodiments with two friction clutches or with a friction clutch and a brake.
  • the vehicle transmission for a hybrid drive train is designed as a so-called hybrid transmission, in which the second transmission input shaft is operatively connected to the rotor of the electric machine, in which a separating element is arranged, which is designed as a form-locking coupling ,
  • the planet carrier of the first planetary gear train side is connectable to the second transmission input shaft, and in which the drive shaft with the planet carrier of the first planetary gear set, which is effective as the drive element is connected.
  • the form of a positive coupling formed separating element and the fourth switching element are combined as a single switching element with two switching positions in which alternately the planet carrier of the first planetary gear set side is connectable to the second transmission input shaft, or the first connectable to the second transmission input shaft is. This ensures that in the hybrid transmission all the switching elements are designed as double-sided switching packages, resulting in further cost and space advantages.
  • the vehicle transmission can be expanded by an extension with a front group and / or a Nachschalty to a group transmission, whereby the number of revolutions of a main transmission in the construction of the embodiments described so far can be doubled. This can be useful in particular for applications in commercial vehicles.
  • the vehicle transmission is designed as a dual-clutch group gearbox, in which the first, second and third planetary gear set are switchable at least by means of a first, second and third switching element with two switching positions,
  • the range group comprising a fourth planetary gear set formed as a turning wheel, to which a fifth shift element is associated with a shift position for shifting a reverse gear group, and a fifth planetary gear set, which is associated with a sixth shift element with two shift positions for switching between a slow and a fast forward gear group the fourth planetary gear set, the ring gear is connected to the sun gear of the fifth planetary gear set, the sun gear is connected to the planet carrier of the third planetary gear set, and the planet carrier is connected to the ring gear of the fifth planetary gear and is detectable by means of the fifth switching element on a rotationally fixed component,
  • the sun gear by means of the sixth switching element alternately lockable on a non-rotatable component or is connectable to the planet carrier, and the planet carrier is connected to the output shaft,
  • At least fourteen forward gears and at least seven reverse gears are switchable by means of five shift elements with a total of nine shift positions, that at least thirteen of the at least fourteen forward gears are power-shiftable and the fourteenth forward gear is a direct gear, and in which the at least seven reverse gears are all power-shiftable.
  • the number of revolutions of a seven-speed main transmission with the features of the invention by means of a range group can be doubled by this gear arrangement.
  • the changeover of the area group is interrupted without further action.
  • the interruption of tractive effort can be minimized by designing a smaller gear jump in the range changeover and thus a rather low loss of speed compared to the other gears.
  • All other gears, including the seven reverse gears, are power shiftable.
  • the downstream translation of the fifth planetary gear set can provide short gears, as are generally required for commercial vehicle applications.
  • the ratios of the reverse gears may be comparable to the ratios of the corresponding forward gears.
  • the vehicle transmission is designed as a dual-clutch group transmission in which the first, second and third planetary gear set is switchable, each with at least two switching positions, by means of a first, second and third shifting element,
  • a fourth planetary gear set which is effective as a range group
  • a sixth shift element which has two shift positions for switching between a slow and a fast forward gear group, are arranged downstream of the third planetary gear set
  • the ring gear is alternately lockable on a rotationally fixed component or connectable to the planet carrier, the sun gear is connected to the planet carrier of the third planetary gear set, and the planet carrier is connected to the output shaft,
  • a fifth planetary gear set which is effective as a turning wheel set
  • a fifth switching element which has two switching positions, are arranged upstream of the first planetary gear set, that in the fifth planetary gear, the ring gear is connected to the planet carrier of the first planetary gear, the sun gear is connected to the drive shaft, and the planet carrier by means of the fifth switching element alternately lockable on a non-rotatable component or connectable to the sun, that by means of five switching elements with a total ten shift positions at least fourteen forward gears and at least seven reverse gears are switchable that of the at least fourteen forward gears at least thirteen are power shiftable and the fourteenth forward gear is a direct gear, and that the at least seven reverse gears are all power shiftable.
  • This last arrangement therefore has a fourth planetary gear set, which is arranged downstream of the main gear as a range group, and a fifth planetary gear set, which is connected upstream of the main gear as a reversing gear set.
  • a lower and an upper, respectively seven-speed gear group can be realized, wherein the range change is traction-interrupted.
  • the gear jump of the area change is expediently designed to be relatively small.
  • the reverse gears can be translated relatively short and have, for example, the 1, 8-fold translation of the corresponding forward gears, which is advantageous for a shunting operation.
  • a torque limitation of the internal combustion engine in the reverse drive mode makes sense.
  • FIG. 1 shows a transmission diagram of a first embodiment of a vehicle transmission according to the invention, with two input-side clutches and three planetary gear sets, with a switchable direct connection between a first transmission input shaft and an output shaft
  • 2 is a transmission diagram of planetary gear sets for a vehicle transmission according to FIG. 1, FIG.
  • FIG. 3 is a circuit diagram for the 8-speed vehicle transmission according to FIG. 1, with a direct gear and an overdrive gear, FIG.
  • FIG. 4 shows a transmission diagram of a second embodiment of a vehicle transmission according to the invention, with a shiftable partial transmission clutch via a transmission input shaft connection,
  • FIG. 5 is a circuit diagram for the 8-speed vehicle transmission according to FIG. 4, with a direct gear and an overdrive gear, FIG.
  • FIG. 6 is a transmission diagram of a third embodiment of a vehicle transmission, with a triple switching element
  • FIG. 7 shows a transmission diagram of a fourth embodiment of a vehicle transmission, exclusively with double shift elements
  • FIG. 8 is a circuit diagram for the 7-speed vehicle transmission of FIG. 7 with a direct gear
  • FIG. 9 is a transmission diagram of a fifth embodiment of a vehicle transmission, with radially nested planetary gear sets,
  • 10 is a transmission diagram of a sixth embodiment of a vehicle transmission, with an input-side clutch and an input-side brake,
  • FIG. 11 is a circuit diagram for the 8-speed vehicle transmission according to FIG. 10, with a direct gear and an overdrive gear, FIG.
  • FIG. 12 is a transmission diagram of a seventh embodiment of a vehicle transmission, with a first hybrid drive assembly, 13 is a circuit diagram of the 8-speed vehicle transmission according to FIG. 12, with a direct gear and an overdrive gear, FIG.
  • FIG. 14 is a transmission diagram of an eighth embodiment of a vehicle transmission, with a second hybrid drive arrangement
  • FIG. 15 is a circuit diagram for the 8-speed vehicle transmission according to FIG. 14, with a direct gear and an overdrive gear, FIG.
  • FIG. 6 is a transmission diagram of a ninth embodiment of a vehicle transmission, with a first arrangement of a reverse planetary gear set,
  • FIG. 17 is a transmission diagram of planetary gear sets for a vehicle transmission according to FIG. 1 6,
  • FIG. 18 is a circuit diagram for the 8-speed vehicle transmission according to FIG. 1 6, with a direct gear and an overdrive gear and with eight reverse gears,
  • 19 is a transmission diagram of a tenth embodiment of a vehicle transmission, with a second arrangement of a reverse planetary gear set,
  • FIG. 20 is a circuit diagram for the 8-speed vehicle transmission according to FIG. 19, with a direct gear and an overdrive gear and with four reverse gears,
  • 21 is a transmission diagram of an eleventh embodiment of a vehicle transmission, with a third arrangement of a reverse planetary gear,
  • FIG. 22 is a transmission diagram of planetary gear sets for a vehicle transmission according to FIG. 21, FIG.
  • 23 is a circuit diagram for the 8-speed vehicle transmission according to FIG. 21, with a direct gear and an overdrive gear and with two reverse gears, 24 is a transmission diagram of a twelfth embodiment of a vehicle transmission, with an additional switching element,
  • 25 is a circuit diagram for the 8-speed vehicle transmission of FIG. 24, with a direct gear and an overdrive gear,
  • 26 shows a transmission diagram of a 14-speed embodiment of a vehicle transmission, with a range group with an integrated reverse gear planetary gear set,
  • FIG. 27 is a translation scheme with state translations of planetary gear sets for a vehicle transmission according to FIG. 26,
  • FIG. 28 is a circuit diagram for the 14-speed vehicle transmission of FIG. 26, with a direct gear and seven reverse gears,
  • 29 is a transmission diagram of a fourteenth embodiment of a vehicle transmission, with a range group and with a reverse planetary gear as a Vorschalty,
  • Fig. 30 is a translation scheme with state translations of planetary gear sets for a vehicle transmission according to FIG. 29, and
  • Fig. 31 is a circuit diagram for the 14-speed vehicle transmission of FIG. 29, with a direct gear and seven reverse gears.
  • the vehicle transmission schematically illustrated in FIG. 1 essentially comprises three planetary gear sets PG1, PG2, PG3, a drive shaft AW, two transmission input shafts GE1, GE2, two frictional clutches.
  • the three planetary gear sets PG1, PG2, PG3 are designed as simple minus gears, each comprising a radially outer ring gear HR1, HR2, HR3, an inner sun gear SR1, SR2, SR3 and a planet carrier PT1, PT2, PT3, wherein the planet carrier PT1, PT2 , PT3 each have a plurality of planet gears PR1, PR2, PR3, which mesh with the sun gear SR1, SR2, SR3 and the ring gear HR1, HR2, HR3.
  • the first planetary gear set PG1 is arranged at the transmission input. His planet carrier PT1 is the input side rotatably connected to the drive shaft AW, which is drivingly connected to a drive machine, not shown, for example, designed as an internal combustion engine. The planet carrier PT1 is thus effective as a drive element of the first planetary gear PG1.
  • the planet carrier PG1 of the first planetary gear set PG1 is the transmission side connected to the second friction clutch K2.
  • the second friction clutch K2 is drive-connected on the output side or on the transmission side to the second transmission input shaft GE2, which is designed as a hollow shaft.
  • the sun gear SR1 of the first planetary gear set PG1 is fixed to a non-rotatable component GH, for example, a transmission housing.
  • the ring gear HR1 of the first planetary gear set PG1 is drive-connected to the first friction clutch K1 and thus effective as an output element of the first planetary gear PG1.
  • the first friction clutch K1 is drive-connected to the first transmission input shaft GE1 on the transmission side, which is formed with respect to the second transmission input shaft GE2 as a radially inner shaft, the transmission side emerges from the radially outer second transmission input shaft GE2.
  • the first planetary gear set PG1 forms with the first friction clutch K1 and the first transmission input shaft GE1 a first partial transmission TG1 with a first fixed input ratio.
  • the first planetary gear set PG1 is only bridged via the planet carrier PT1.
  • the second planetary gear set PG2 following in the axial direction and in terms of drive technology forms with the second friction clutch K2 and the second transmission input shaft GE2 a second partial transmission TG 2 with a second fixed input ratio, the ring gear HR2 of which being the drive element and the planet carrier PT2 acting as the output element.
  • the sun gear SR2 of the second planetary gear set PG2 is in turn fixed to the rotationally fixed component GH.
  • the main shaft HW is arranged.
  • the output end of the main shaft HW is guided axially through the third planetary gear PG3 and rotatably connected to the output shaft AB.
  • the three planetary gear sets PG1, PG2, PG3 are by means of a first, a second and a third switching element S1, S2, S3, each with two switching positions A / B, C / D, E / F, which are mutually switchable, and by means of a fourth switching element S4 with only one switch position G switchable.
  • the first transmission input shaft GE1 or the first friction clutch K1 can be connected by means of the first shifting element S1 in its first shifting position A to the ring gear HR2 of the second planetary gear set PG2.
  • the first transmission input shaft GE1 and the second friction clutch K2 with the sun gear SR3 of the third planetary gear set PG3 can be connected.
  • the first transmission input shaft GE1 via the fourth switching element S4 in its switching position G directly to the main shaft HW and thus to the output shaft AB connectable.
  • the second transmission input shaft GE2 or the second friction clutch K2 is connected via the second switching element S2 alternately in its first switching position C with the ring gear HR2 or in its second switching position D with the planet carrier PT2 of the second planetary PG2 connectable.
  • the ring gear HR3 is fixed to the non-rotatable component GH
  • the sun gear SR3 is connected via the third switching element S3 in its first switching position E with the planet carrier PT2 of the second planetary gear set PG2
  • the planet carrier PT3 is the output side fixed to the output shaft AB connected.
  • FIG. 2 shows as a numerical example a possible translation of the three planetary gear sets PG1, PG2, PG3 designed as negative gear units, whereby the positive planetary gear set transmission i_PG effective in the gear structure according to FIG. It can be seen that the drive and output elements have the same direction of rotation.
  • gear shift between the first gear “1” and the second gear “2” is as follows:
  • the second clutch K2 is closed, the second gear TG2 is in the switching position C, wherein the ring side of the ring gear HR2 of the second planetary gear PG2 with the second transmission input shaft GE2 and on the drive side the second friction clutch K2 and the planet carrier PT1 of the first planetary gearset PG1 are connected to the drive shaft AW.
  • the third shifting element S3 is located in its first shift position E, in which the planet carrier PT2 of the second planetary gearset PG2 acts as an output element and is connected to the sun gear SR3 of the third planetary gear PG3, so that the translation of the third planetary PG3 acts on the output shaft AB.
  • a gear ratio of i 4.99 results for the first gear "1".
  • the shift position E of the third shift element S3 remains in.
  • the first shift element S1 is moved into its first shift position A, in which the ring gear HR2 of the second planetary gear set PG2 is connected to the first transmission input shaft GE1. Because when switched first gear "1", the first clutch K1 is still open and thus the first part of the transmission TG1 is still inactive.
  • the eighth gear “8" which can be activated by closing the fourth shift element S4, is designed as an overdrive gear or overdrive gearshift in the relevant shift position G of the fourth shift element S4 and when the fourth shift element S4 is engaged.
  • sener first clutch K1 is the translation of the first planetary PG1 directly on the output effective.
  • the transmission structure forms a Basisradsatz, which can be extended by a Wenderadsatz to realize at least one reverse gear.
  • FIG. 4 shows a base gearset modified in relation to FIG. 1, in which the output-side end of the main shaft HW is not connected directly to the output shaft AB but to the sun gear SR3 of the third planetary gear set PG3.
  • the fourth switching element S4 via the fourth switching element S4 not a direct connection between the first transmission input shaft GE1 and the main shaft HW but a connection between the first transmission input shaft GE1 and the second transmission input shaft GE2 produced, whereby a coupling of the two partial transmission TG1, TG2 can be realized.
  • the eighth gear “8" is designed as Overdrivegang and is realized in this transmission structure by coupling the two partial transmission TG1, TG2 by means of the fourth switching element S4 and by switching the planet carrier PT2, PT3 of the second and third planetary PG2, PG3 on the output shaft AB
  • the second and the third shift element S2, S4 are switched to their shift positions D and F.
  • the circuit diagram of Fig. 5 corresponds to the circuit diagram of Fig. 3 of the Basisradsatzes of FIG.
  • the transmission structure according to FIG. 4 can be expanded by a turning wheel set in order to realize reverse gears. Different reverse gear variants will be explained later.
  • FIG. 6 shows a largely identical arrangement to the transmission structure according to FIG. 4, in which, however, the first and fourth switching elements S1, S4 are combined to form a triple switching element S4 / S1 with a total of three switching positions A, B, G.
  • the three switch positions A, B, G are sequentially and mutually actuated with a common actuator.
  • these switch positions A, B, G are never closed at the same time, since they are assigned to the same partial transmission TG1. Therefore, this triple switching element S1 / S4 can be used with its three switch positions A / B / G.
  • Fig. 7 shows a further variant of the Basisradsatzes according to FIG. 4, in which, however, the fourth switching element S4 is omitted.
  • a transmission structure is formed, which has only the first, the second and the third double switching element S1, S2, S3. Since the omitted fourth shift element S4 was required for the overdrive gear "8", only one shift pattern with seven gears "1" to "7" can be realized in the gear arrangement according to Fig. 7.
  • This shift scheme is shown in Fig. 8. It corresponds to Figs to the omitted Overdrivegang the circuit diagram of FIG. 5 of the transmission of FIG. 4th
  • FIG. 9 shows a further variant of the base gearset according to FIG. 4, in which, however, the second and third planetary gear sets PG2, PG3 are arranged coaxially and radially one above the other in a common gear plane.
  • the ring gear HR3 of the third planetary gearset PG3 is rotatably connected to the sun gear SR2 of the second planetary gear set PG2.
  • the connection of the individual wheelset elements as well as the circuit diagram otherwise correspond to the transmission structure according to FIG. 4 or the circuit diagram according to FIG. 5.
  • FIG. 10 shows a transmission structure in which a brake B1 is arranged instead of the first friction clutch K1.
  • the first planetary gearset PG1 is effective as an input constant of the first subtransmission TG1.
  • the sun gear SR1 of the first planetary gear set PG1 is festbremsbar to the stationary component GH and detachable from this.
  • the first transmission input shaft GE 2 is rotatably connected to the ring gear HR1 of the first planetary gear set PG1.
  • FIG. 1 1 A circuit diagram shown in Fig. 1 1 for the transmission structure of FIG. 10 largely corresponds to the circuit diagram of FIG. 5, wherein instead of the first clutch K1 now the brake B1 is actuated.
  • the ratios of the eight forward gears "1" to “8” and the stationary ratios i_0 and the effective ratios i_PG of the planetary gear sets PG1, PG2, PG3 are identical to the transmission according to FIG.
  • Fig. 12 shows an embodiment, which is referred to as a hybrid transmission, because this transmission is advantageously used in the drive train of a hybrid vehicle with internal combustion engine and electric motor drive.
  • the rotor EMR of an electric machine EM is connected to the second transmission input shaft GE2.
  • a positive separating clutch X1 is present, by means of which the second transmission input shaft GE2 can be connected to the planet carrier PT1 of the first planetary gear set PG1 at its closed switching position X.
  • the first separating element K1 is designed as a transmission input-side friction clutch, by means of which the planet carrier PT1 of the first planetary gear set PG1 on the drive side with the drive shaft AW connectable or detachable from this.
  • the gear structure otherwise corresponds to the transmission according to FIG. 4.
  • Fig. 14 shows a second embodiment of a hybrid transmission.
  • the input-side first friction clutch K1 is omitted in comparison to the transmission of FIG. 12 and the fourth shift element S4 and the positive-locking disconnect clutch X1 are combined as a single, double-sided operable switching element X / S4.
  • the hybrid transmission of FIG. 14 thus comes completely without friction clutches.
  • the startup operations in this transmission therefore take place only by electric motor with the aid of an electric machine EM whose rotor EMR is drive-connected to the second transmission input shaft GE2.
  • Figures 1 6 to 23 show various embodiments for installing a Wenderadsatzes in the transmission structure of FIG. 4 for the realization of reverse gears.
  • a fourth planetary gear set PG 4 which is effective as a turning wheel set, is arranged.
  • the fourth planetary gear PG4 is the first planetary gear set PG1 axially and drive technology upstream and thus associated with the first partial transmission TG1.
  • the ring gear HR4 of the fourth planetary gear set PG4 is connected to the planet carrier PT1, that is to say to the drive element of the first planetary gear set PG1.
  • the sun gear SR4 of the fourth planetary gear set PG4 is connected to the drive shaft AW.
  • the planet carrier PT4 of the fourth planetary gearset PG4 is mutually connectable by means of the fifth switching element S5 in its first switching position V to the drive shaft AW or detectable in its second switching position R on the non-rotatable component GH.
  • the negative stationary gear ratio of the fourth planetary gearset PG4 designed as a negative gear is active, so that the direction of rotation between the driving sun gear SR4 and the output ring gear HR4 of the fourth planetary gear set PG4 for a reverse drive operation turns.
  • For the eight forward gears "1" to “8” corresponds to the circuit diagram of the circuit diagram of Fig. 5 of the transmission structure of FIG. 4, wherein additionally the fifth switching element S5 always in the forward gear shift position V is located.
  • eight reverse gears R1, R2, R3, R4, R5, R6, R7, R8 are realized and sequentially load switchable, wherein the fifth switching element S5 is always in the reverse gear position R.
  • the ratio of the eight reverse gears R1 to R8 corresponds approximately to 1.5 times the eight forward gears "1" to "8".
  • 19 shows a transmission structure with an alternative connection of a fourth planetary gear set PG4 between the first planetary gear set PG1 and the second planetary gear set PG2.
  • the ring gear HR4 of the fourth planetary gear set PG4 can be connected to the ring gear HR2 or to the planet carrier PT2 of the second planetary gear set PG2 by means of the second switching element S2.
  • the sun gear SR4 of the fourth planetary gear set PG4 is connected to the second transmission input shaft GE2.
  • the planet carrier PT4 of the fourth planetary gear set PG4 is mutually connectable in its first switching position V with the second transmission input shaft GE2 or detectable in its second switching position R on the non-rotatable component GH by the fifth switching element S5.
  • Fig. 21 shows another arrangement of a fourth planetary gear set PG4, which is effective as a Wenderadsatz for the transmission.
  • the fourth planetary gear set PG4 is disposed axially between the second planetary gear set PG2 and the third planetary gear set PG3.
  • the fifth shift element S5 requires only one shift position R for activating the reverse drive function and is combined with the second shift element S2 to form a triple shift element S2 / S5 with three shift positions C, D, R.
  • the first switching element S1 and the fourth switching element S4 are combined to form a further triple switching element S4 / S1 with three switching positions G, B, A.
  • the planet carrier PT4 of the fourth planetary gear PG4 is detected on the rotationally fixed component GH.
  • the sun gear SR4 of the fourth planetary gear set PG4 is for switching the Reversing operation with the second transmission input shaft GE2 connectable.
  • the ring gear HR4 of the fourth planetary gear set PG4 is connected to the planet carrier PT2 of the second planetary gear set PG2.
  • Fig. 24 shows a gear similar to that of Fig. 4, but with an additional switching element S7 with two switching positions H, I is arranged to alternately in the third planetary gear PG3 whose ring gear HR3 with the non-rotatable member GH or with the planet PT3 connect to. As a result, this third planetary gear set PG3 can optionally be blocked.
  • Fig. 26 shows an extension of the previously proposed transmission structure to a group transmission.
  • the third planetary gear set PG3 for this purpose a range group GP driving technology and axially downstream.
  • This range group GP has a fourth planetary gear set PG4 designed as a reversing gear set, to which a fifth shift element S5 with a single shift position R for shifting a reverse gear group is assigned, and a fifth planetary gear set PG5 which has a sixth shift element S6 with two shift positions L, H for switching between a slow and a fast forward gear group is assigned.
  • the ring gear HR4 of the fourth planetary gear set PG4 is connected to the sun gear SR5 of the fifth planetary gear set PG5.
  • the planet carrier PT4 of the fourth planetary gear set PG4 is connected to the ring gear HR5 of the fifth planetary gear set PG5 and together with this by the fifth switching element S5 for switching the reverse drive function on the non-rotatable component GH detectable.
  • the sun wheel SR4 of the fourth planetary gear set PG4 is connected to the planet carrier PT3 of the third planetary gear set PG3.
  • the sun gear SR5 of the fifth planetary gearset PG5 connected to the ring gear HR4 of the fourth planetary gear set PG5 is lockable by the sixth shifting element S6 for shifting a lower gear group on the non-rotatable member GH and connectable with the planet carrier PT5 of the fifth planetary gear set PG5 for shifting an upper gear group the fifth planetary gear set PG5 is blocked.
  • a fourth switching element S4 for switching a partial transmission coupling is omitted in this transmission structure. Accordingly, the main transmission of the transmission structure according to FIG. 26 corresponds to that of the 7-speed transmission according to FIG. 7.
  • FIG. 27 A possible translation table with state ratios i_0 of the five planetary gear sets PG1, PG2, PG3, PG4, PG5 is shown in FIG. 27.
  • FIG. 28 A possible possible shift scheme is shown in FIG. 28. Accordingly, a doubling of the number of revolutions of the main transmission is achieved, so that a total of fourteen forward gears "1” to “14” and seven reverse gears R1 to R7 are switchable. The largest forward gear "14" is designed as a direct gear.
  • a range group GP includes a fourth planetary gear set PG4 and a sixth shift element S6 with two shift positions L, H for switching between a slow and a fast forward gear group.
  • a fifth planetary gear set PG5 is arranged as a front-end group.
  • a fifth shift element S5 is arranged with two shift positions V, R for switching between a forward drive operation and a reverse drive operation.
  • the fifth planetary gear set PG5 and the Vorschalty PG5 is comparable to the upstream planetary gear set PG4 of the transmission of FIG.
  • the ring gear HR5 of the fifth planetary gearset PG5 is connected to the planet carrier PT1 of the first planetary gearset PG1.
  • the sun gear SR5 of the fifth planetary gear set PG5 is connected to the drive shaft AW.
  • the planet carrier PT5 of the fifth planetary gear set PG5 is mutually connectable in its first switching position V with the drive shaft AW by the fifth switching element S5 or detectable in its second switching position R on the rotationally fixed component GH.
  • the sun gear SR4 of the fourth planetary gear set PG4 is connected to the planet carrier PT3 of the third planetary gear set PG3.
  • the ring gear HR4 of the fourth planetary gearset PG4 can be detected alternately on the non-rotatable component GH by means of the sixth shifting element S6, whereby the gear ratio of the fourth planetary gearset PG4 is activated, or with the Planetenträ- eng PT4 of the fourth planetary gear PG4 connectable, whereby the block circulation of the fourth planetary gear set PG4 is activated.
  • FIG. 30 A possible translation table with state translations i_0 of the five planetary gear sets PG1, PG2, PG3, PG4, PG5 as a numerical example is shown in FIG. 30.
  • FIG. 31 A possible circuit diagram resulting therefrom is shown in FIG. 31.
  • fourteen forward speeds "1” to “14” and seven reverse speeds R1 to R7 are realized.
  • the ratios of the forward gears "1" to "14” are similar to those of the circuit diagram of FIG. 28 of the group transmission of FIG. 26.
  • the reverse gears R1 to R7 are again shorter translated.
  • the translations correspond approximately to 1, 8 times the corresponding forward gears. This transmission is therefore particularly suitable for a very sensitive shunting operation.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Structure Of Transmissions (AREA)

Abstract

L'invention concerne une boîte de vitesses de véhicule, comportant un arbre d'entraînement (AW), deux arbres d'entrée (GE1, GE2), au moins un élément de séparation (K2, X1) qui est associé au deuxième arbre d'entrée (GE2), un arbre principal (HW), un arbre de sortie (AB) et au moins trois trains planétaires (PG1, PG2, PG3), une boîte partielle (TG1, TG2) étant associée à chacun des arbres d'entrée (GE1, GE2), l'une des deux boîtes partielles (TG1, TG2) comportant au moins le premier train planétaire (PG1) et l'autre boîte partielle (TG1, TG2) comportant au moins le deuxième train planétaire (PG2), lesdits arbres (AB, AW, GE1, GE2, HW) coopérant ou pouvant coopérer avec les trains planétaires (PG1, PG2, PG3), de telle sorte que les deux boîtes partielles (TG1, TG2) permettent d'enclencher au moins sept rapports de marche avant ("1", "2", "3", "4", "5", "6", "7") à changement séquentiel sous charge, l'un de ces rapports de vitesse pouvant être enclenché en tant que vitesse à prise directe ou vitesse surmultipliée.
EP14704810.2A 2013-03-20 2014-02-18 Boîte de vitesses de véhicule Withdrawn EP2976550A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013204918.8A DE102013204918A1 (de) 2013-03-20 2013-03-20 Fahrzeuggetriebe
PCT/EP2014/053052 WO2014146840A1 (fr) 2013-03-20 2014-02-18 Boîte de vitesses de véhicule

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EP2976550A1 true EP2976550A1 (fr) 2016-01-27

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US (1) US20160061304A1 (fr)
EP (1) EP2976550A1 (fr)
DE (1) DE102013204918A1 (fr)
WO (1) WO2014146840A1 (fr)

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DE102016220150A1 (de) * 2016-10-14 2018-04-19 Zf Friedrichshafen Ag Getriebe für ein Kraftfahrzeug
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DE102016015302A1 (de) * 2016-12-22 2018-06-28 Daimler Ag Gruppengetriebevorrichtung
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DE102017216317B4 (de) * 2017-09-14 2023-11-23 Zf Friedrichshafen Ag Getriebe für ein Kraftfahrzeug
DE102018219624A1 (de) 2018-11-16 2020-05-20 Zf Friedrichshafen Ag Getriebe für ein Kraftfahrzeug
DE102019202969A1 (de) * 2019-03-05 2020-09-10 Zf Friedrichshafen Ag Hybrid-Getriebeanordnung für einen Kraftfahrzeugantriebsstrang sowie Verfahren zum Betreiben eines Hybrid-Antriebsstranges
DE102019206800A1 (de) * 2019-05-10 2020-11-12 Zf Friedrichshafen Ag Getriebe für ein Kraftfahrzeug
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WO2014146840A1 (fr) 2014-09-25
DE102013204918A1 (de) 2014-09-25

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