WO2024013078A1 - Lastschaltbares getriebe für ein in gruppenbauweise ausgeführtes kraftfahrzeuggetriebe - Google Patents
Lastschaltbares getriebe für ein in gruppenbauweise ausgeführtes kraftfahrzeuggetriebe Download PDFInfo
- Publication number
- WO2024013078A1 WO2024013078A1 PCT/EP2023/069014 EP2023069014W WO2024013078A1 WO 2024013078 A1 WO2024013078 A1 WO 2024013078A1 EP 2023069014 W EP2023069014 W EP 2023069014W WO 2024013078 A1 WO2024013078 A1 WO 2024013078A1
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- WO
- WIPO (PCT)
- Prior art keywords
- spur gear
- shaft
- input shaft
- power
- transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- 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 parallel flow paths, e.g. dual clutch transmissions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- 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
- F16H3/093—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 with two or more countershafts
- F16H3/097—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 with two or more countershafts the input and output shafts being aligned on the same axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- 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 parallel flow paths, e.g. dual clutch transmissions
- F16H2003/008—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by parallel flow paths, e.g. dual clutch transmissions comprising means for selectively driving countershafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- 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
- F16H2003/0811—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 using unsynchronised clutches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- 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
- F16H2003/0826—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 wherein at least one gear on the input shaft, or on a countershaft is used for two different forward gear ratios
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/0017—Transmissions for multiple ratios specially adapted for four-wheel-driven vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0043—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising four forward speeds
Definitions
- the invention relates to a power-shiftable transmission for a motor vehicle transmission designed in a group design, comprising a drive shaft, a first input shaft, a second input shaft and an output shaft, with a first power-shift element being provided, via which the first input shaft is connected to the drive shaft can be coupled, with a second load-shifting element being provided, via which the second input shaft can be coupled to the drive shaft, with a first spur gear stage, a second spur gear stage and a third spur gear stage as well as a first switching element, a second switching element and a third switching element being provided, wherein in the first spur gear stage, a first spur gear is rotatably mounted on the first input shaft and can be connected in a rotationally fixed manner to the first input shaft via the first switching element, the first spur gear being in mesh with a second spur gear, which is arranged on the output shaft and coupled to a third spur gear , which is assigned to the second spur gear stage, the third spur gear stage being assigned a fourth spur gear and a fifth spur gear, which
- such a motor vehicle transmission is made up of several transmission groups, often including a step group or main group, a split group upstream or downstream of the step group or main group, sometimes a range group usually connected downstream, and often also a reversing group. such as a creeper group.
- the gear sequence of the motor vehicle transmission is specified via the main group, and this is influenced accordingly via the additional transmission groups connected upstream and/or downstream, depending on the gear ratios switched here.
- a splitter group and a main group of such a motor vehicle transmission are designed to be powershiftable in order to be able to carry out the gear changes, which usually only have to be carried out in the splitter group and the main group, under load and thus with a high level of comfort during ongoing work of the commercial vehicle.
- EP 2 916 044 A1 discloses a motor vehicle transmission designed in a group design, which is intended for use in an agricultural vehicle, such as an agricultural tractor.
- the motor vehicle transmission is made up of several transmission groups, one of which is implemented as a transmission designed in the manner of a dual clutch transmission.
- This transmission group has two input shafts that are axially parallel to one another, each of which is assigned a powershift element.
- the individual input shaft can be coupled to a common drive shaft by actuating the associated power shift element, which at the same time also forms an output shaft of a multi-speed transmission upstream of the transmission.
- spur gear stages are assigned to both input shafts, which can be integrated into a power flow by selective actuation of associated switching elements and thereby cause the associated input shaft to be coupled to an output shaft of the transmission, thereby representing a respective assigned gear ratio.
- Idler gears of the spur gear stages are each rotatably mounted on the input shafts and can be fixed there by closing the associated switching element be set while fixed gears are placed on the output shaft.
- the individual fixed gear is simultaneously in mesh with two idler gears, so that two spur gear stages are arranged axially in a wheel plane.
- the object of the present invention is to create a powershift transmission which is characterized by a compact structure and low manufacturing costs and in which the highest possible number of different gears can be switched at the same time .
- a powershift transmission includes a drive shaft, a first input shaft, a second input shaft and an output shaft.
- a first power-shifting element is provided, via which the first input shaft can be coupled to the drive shaft, with a second power-shifting element also being provided, via which the second input shaft can be coupled to the drive shaft.
- a first spur gear stage, a second spur gear stage and a third spur gear stage as well as a first switching element, a second switching element and a third switching element are provided, wherein in the first spur gear stage a first spur gear is rotatably mounted on the first input shaft and via the first switching element can be connected in a rotationally fixed manner to the first input shaft.
- the first spur gear is in mesh with a second spur gear, which is arranged on the output shaft and coupled to a third spur gear, which is the second Spur gear stage is assigned.
- the third spur gear stage is assigned a fourth spur gear and a fifth spur gear, which mesh with one another and of which the fourth spur gear is arranged on the first input shaft and the fifth spur gear is arranged on the output shaft.
- the first input shaft and the output shaft are coupled to one another via the third spur gear stage when the second switching element is actuated.
- a “shaft”, such as in particular the drive shaft, the first input shaft, the second input shaft and the output shaft, is to be understood as meaning a rotatable component of the power-shiftable transmission, via which a power flow can be guided between components, if necessary while simultaneously actuating a corresponding power-shifting element or switching element can be made.
- the respective shaft can connect components of the transmission axially or radially or both axially and radially.
- the respective shaft can also be present as an intermediate piece via which a respective component is connected radially, for example.
- the respective shaft can be designed as a one-piece component or can be in several parts, in that the respective shaft is composed of several shaft parts that are connected to one another in a rotationally fixed manner.
- the individual shaft can be designed as a solid shaft, as a hollow shaft or as a solid shaft in sections and as a hollow shaft in sections.
- axial means an orientation in the direction of a longitudinal central axis of the power-shiftable transmission, parallel to which axes of rotation of rotatable components of the transmission, such as in particular the shafts and the spur gears, are arranged.
- Ring is then understood to mean an orientation in the diameter direction of a respective rotatable component, in particular a respective shaft or a respective spur gear.
- the drive shaft can be coupled in a rotationally fixed manner to an input shaft via two powershift elements.
- the first power shift element couples the drive shaft to a first input shaft
- closing the second power shift element creates a coupling between the drive shaft and a second input shaft becomes.
- Several spur gear stages are provided between the input shafts and the common output shaft, which are intended to be able to produce a coupling of the respective input shaft to the output shaft individually or in combination with one another.
- the power-shiftable transmission according to the invention is composed of two partial transmissions, each of which has an input shaft.
- the individual input shaft can be coupled to the output shaft by selective actuation of the switching elements to represent different gears, with a selective actuation of the switching elements and a corresponding power flow routing via at least one of the spur gear stages taking place to represent the individual gear.
- the associated input shaft of the respective partial transmission can also be coupled to the drive shaft, so that ultimately the drive shaft is coupled to the output shaft with the ratio defined in the respective gear.
- the powershiftability of the transmission is achieved by preselecting this target gear in the other sub-transmission in the shifted state of an actual gear in one sub-transmission when a change to a target gear above or below is due to occur
- the output shaft is already coupled to the input shaft of the other sub-transmission.
- the final gear change is then carried out by switching between the powershift elements, which can be carried out under load and therefore essentially without interruption of a tractive force. Accordingly, a representation of the gears with regard to the gear sequence is distributed alternately between the two sub-transmissions, so that in the course of a successive shifting of the gears of the transmission, it is always possible to change between adjacent gears under load by switching between the power-shifting elements.
- a “spur gear stage” is composed of two spur gears, which are constantly in mesh with one another.
- a spur gear can also be part of two spur gear stages at the same time, in that this spur gear simultaneously meshes with two spur gears assigned to different spur gear stages.
- exactly three spur gear stages are provided between the input shafts and the output shaft in the form of the first spur gear stage, the second spur gear stage and the third spur gear stage, although one or more further spur gear stages may be provided in each case can be arranged between one of the input shafts and the output shaft.
- a spur gear connected in a rotationally fixed manner to a respective shaft can also be present as a separate spur gear secured in a rotationally fixed manner on the respective shaft or as a spur gear designed in one piece with the respective shaft.
- a “power switching element” is to be understood as meaning a switching element that can be switched under load, so that the respective power switching element, when actuated even under load, i.e. when transmitting a torque, provides a rotationally fixed connection of the components of the device that are directly connected to it Gearbox can cause.
- the first power switching element is intended to couple the first input shaft and the drive shaft to one another when actuated, and this coupling can be carried out under load.
- the second power switching element is designed to bring about a coupling between the second input shaft and the drive shaft when actuated, and this can also be carried out under load.
- the first switching element, the second switching element and the third switching element are present as switching elements which, when actuated, each bring about a respective rotation-proof connection between the components of the transmission that are directly connected thereto, although this does not have to be possible under load.
- the first switching element, the second switching element and the third switching element can also be designed as power-shiftable switching elements, although this is not absolutely necessary for the function of the power-shiftable transmission.
- the first switching element, the second switching element and the third switching element are preferably designed as non-power-shiftable switching elements.
- the respective further spur gear stage is in particular assigned a further switching element.
- the first spur gear When the first switching element is actuated, the first spur gear is connected to the first input shaft in a rotationally fixed manner, the first spur gear being rotatably mounted as an idler gear on the first input shaft and constantly meshing with the second spur gear, which is placed on the output shaft and thus coaxially with the output shaft.
- the second spur gear is also coupled to the third spur gear, whereby in the sense of the invention, a coupling of the second spur gear with the third spur gear is to be understood as meaning that the second spur gear and the third spur gear cannot rotate independently of one another, but rather Rotations of the second spur gear and the third spur gear take place at a fixed speed ratio.
- the third spur gear is also assigned to the second spur gear stage.
- the third spur gear stage is composed of the fourth spur gear and the fifth spur gear, with the two spur gears permanently meshing with one another and the fourth spur gear being placed on the first input shaft and thus coaxial to it, while the fifth spur gear is on the Output shaft and thus is arranged coaxially to the output shaft.
- the invention now includes the technical teaching that the third spur gear is placed on the second input shaft in a rotationally fixed manner, while the second spur gear is rotatably mounted on the output shaft and can be connected in a rotationally fixed manner to the output shaft via the third switching element.
- the third spur gear is permanently rotatably connected to the second input shaft as a fixed gear
- the second spur gear is rotatably mounted on the output shaft as an idler gear.
- the third switching element then ensures a rotation-proof connection when actuated of the second spur gear with the output shaft, so that the second spur gear and the output shaft subsequently rotate together.
- Such a design of a power-shiftable transmission has the advantage that the rotationally fixed arrangement of the third spur gear on the second input shaft and the design of the second spur gear as an idler gear rotatably mounted on the output shaft in combination with the rotatable mounting of the first Spur gear on the first input shaft, several different power flow routings can be implemented via these spur gears with a low number of switching elements.
- actuating the third switching element in conjunction with a simultaneous actuation of the respective power switching element and possibly the first switching element, a direct power flow can be carried out from the respective input shaft to the output shaft.
- a first gear is switched between the drive shaft and the output shaft by closing the first power shift element as well as the first shift element and the third shift element. This means that the power flow is guided via the drive shaft to the first input shaft, from which the power flow is then guided via the first spur gear stage to the output shaft.
- the second powershift element is then closed, as is the third Switching element actuated.
- the power flow is directed via the drive shaft to the second input shaft and from there via the second spur gear stage to the output shaft.
- the first power shift element and the second shift element are then closed, as a result of which the power flow is guided from the drive shaft to the first input shaft, with the power flow then continuing via the third spur gear - stage is guided to the output shaft.
- a fourth gear is switched between the drive shaft and the output shaft by closing the second power shift element and at the same time closing the first shift element and the second shift element.
- the power flow is guided from the drive shaft to the second input shaft, whereby, as a special feature, the power flow is then guided to the first input shaft starting from the second input shaft via the second spur gear stage and the first spur gear stage, which is connected via the third spur gear stage Output shaft is coupled.
- the power flow is transferred from the second input shaft via the second spur gear stage, the first spur gear stage and finally the third spur gear stage to the output shaft. Since the spur gear stages and also switching elements of the other gears are used, the low manufacturing costs and compact structure of the transmission according to the invention can be achieved.
- Sequential shifting between the gears can be carried out under load, so that the gears can be power-shifted according to the gear sequence when changing gears.
- a change from the first gear to the second gear can take place under load by simply transferring the load from the first power shift element to the second power shift element, since the third shift element is actuated in both gears.
- the first switching element can then be transferred to an open state.
- a downshift from second gear to first gear can also be carried out under load.
- the downshift is prepared in the switched state of the second gear and with power flow via the second input shaft by actuating the first switching element in addition to the third switching element. Then, for the downshift, you only have to switch between the two power-shifting elements again by opening the second power-shifting element and closing the first power-shifting element.
- this upshift is also prepared before the actual switching between the powershift elements.
- the second switching element is actuated in addition to the third switching element and the load is then transferred from the second power switching element to the first power switching element by opening the second power switching element and then closing the first power switching element.
- the third switching element can then be opened.
- a downshift from third gear to second gear can be carried out under load by first actuating the third switching element in addition to the second switching element when the third gear is engaged.
- the actual downshift is then carried out by opening the first powershift element and closing the second powershift element, whereby the second gear is engaged.
- the second switching element can then be opened.
- the upshift from the third gear to the fourth gear is achieved by closing the first switching element in addition to the second switching element in the shifted state of the third gear in preparation for the actual upshifting, with the actual upshifting then being carried out by opening the first Power switching element and closing of the second power switching element is carried out.
- the actual upshifting then being carried out by opening the first Power switching element and closing of the second power switching element is carried out.
- a transmission ratio represented via the first spur gear stage between the first input shaft and the output shaft essentially corresponds to a transmission ratio represented via the second spur gear stage between the second input shaft and the output shaft.
- a gear ratio which is represented when the power flow is guided from the first input shaft to the output shaft via the first spur gear stage alone, corresponds largely to a gear ratio that is realized when the power flow is routed from the second input shaft to the output shaft only via the second spur gear stage.
- gear ratio represented by the first spur gear stage and the gear ratio represented by the second spur gear stage “substantially” correspond means, in the sense of the invention, that there is only a slight and negligible deviation between these gear ratios.
- the input shaft side spur gears of the first spur gear stage and the second spur gear stage only differ in their number of teeth by a few teeth, while a constant number of teeth is preferably provided on the output shaft side.
- the drive shaft is placed axially offset from the first input shaft and the second input shaft, the drive shaft being coupled via a fourth spur gear stage to a first intermediate shaft, which is arranged coaxially to the first input shaft and by actuating the The first power switching element can be connected to the first input shaft.
- the drive shaft is coupled via a fifth spur gear stage to a second intermediate shaft, which is arranged coaxially to the second input shaft and can be connected to the second input shaft in a rotationally fixed manner by actuating the second power shift element.
- the common drive shaft is axially offset from both the first input shaft and the second input shaft, the drive shaft being permanently coupled to intermediate shafts, each of which is assigned to one of the input shafts and is connected to the one input shaft by closing the respective associated load switching elements can be connected in a rotationally fixed manner.
- the coupling of the drive shaft with the respective intermediate shaft is carried out permanently via an associated spur gear stage.
- the fourth spur gear stage is formed by two spur gears which mesh with one another and one of which is placed in a rotationally fixed manner on the drive shaft and one in a rotationally fixed manner on the first intermediate shaft.
- the fifth spur gear stage is formed by two spur gears which mesh with one another and one of which is placed on the drive shaft in a rotationally fixed manner and one of which is placed on the second intermediate shaft in a rotationally fixed manner. In this way, a suitable coupling of the drive shaft with the two intermediate shafts can be achieved.
- a common spur gear of the fourth spur gear stage and the fifth spur gear stage can also be placed on the drive shaft in a rotationally fixed manner, which is simultaneously connected to both one
- the spur gear provided in a rotationally fixed manner on the first intermediate shaft meshes, as well as in tooth mesh with a spur gear arranged in a rotationally fixed manner on the second intermediate shaft.
- a gear ratio that defines the fourth spur gear stage when power flows from the drive shaft to the first intermediate shaft deviates from a gear ratio that represents the fifth spur gear stage when the drive shaft is coupled to the second intermediate shaft.
- the drive shaft is arranged coaxially to one of the input shaft and can be connected in a rotationally fixed manner to this input shaft by actuating the associated power switching element, the drive shaft being coupled to an intermediate shaft via a fourth spur gear stage and a fifth spur gear stage which is arranged coaxially to the other input shaft and can be connected to the other input shaft in a rotationally fixed manner by actuating the power switching element assigned to the other input shaft.
- the drive shaft is coaxial with one of the input shafts, so that closing the associated power shift element results in a rotationally fixed connection of the drive shaft to this input shaft.
- the other power-shifting element when the other power-shifting element is actuated, a coupling of the other input shaft with the drive shaft is shown in that the other input shaft is connected in a rotationally fixed manner via the associated power-shifting element to an intermediate shaft, which is coupled to the drive shaft via a fourth spur gear stage and a fifth spur gear stage .
- the drive shaft is placed coaxially with the second input shaft and can be connected in a rotationally fixed manner to the second input shaft by closing the second powershift element, while the intermediate shaft is arranged coaxially with the first input shaft and in a rotationally fixed manner with the first by closing the first powershift element Input shaft can be connected.
- a spur gear of the fourth spur gear stage is arranged in a rotationally fixed manner on the drive shaft and meshes with a spur gear, which is simultaneously in mesh with a spur gear of the fifth spur gear stage, the spur gear of the fifth spur gear stage being arranged in a rotationally fixed manner on the intermediate shaft.
- the fourth spur gear stage and the fifth spur gear stage have a common spur gear, which, on the one hand, is connected to the spur gear arranged in a rotationally fixed manner on the drive shaft and, on the other hand, with the non-rotatably mounted on the intermediate shaft. le placed spur gear is in tooth mesh. This allows the drive shaft to be coupled to the intermediate shaft with a small number of spur gears via the two spur gear stages.
- the fourth spur gear stage and the fifth spur gear stage can also each have two spur gears, with the spur gear of the fourth spur gear stage, which is arranged in a rotationally fixed manner on the drive shaft, meshing with a spur gear which is connected in a rotationally fixed manner with a spur gear of the fifth spur gear stage, this Spur gear of the fifth spur gear stage is then in mesh with the spur gear of the fifth spur gear stage, which is non-rotatably provided on the intermediate shaft.
- the respective intermediate shaft is preferably designed at least in sections as a hollow shaft, which is arranged axially overlapping with and radially surrounding the respective associated input shaft and can be connected in a rotationally fixed manner to the respective associated input shaft by actuating the respective associated power switching element.
- the respective intermediate shaft is completely present as a hollow shaft.
- the respective intermediate shaft is arranged axially next to the respective associated input shaft and can be connected in a rotationally fixed manner to the respective associated input shaft by actuating the respective associated power switching element.
- the respective intermediate shaft is preferably present at least on an end face facing the respective input shaft or completely as a solid shaft.
- the fourth spur gear is rotatably mounted on the first input shaft and can be connected to the first input shaft in a rotationally fixed manner by actuating the second switching element, while the fifth spur gear is placed in a rotationally fixed manner on the output shaft.
- the fourth spur gear in the third spur gear stage, is rotatably mounted as an idler gear on the first input shaft, while the fifth spur gear is rotatably arranged as a fixed gear on the output shaft. Actuating the second switching element then results in a rotationally fixed connection of the fourth spur gear to the first input shaft.
- the construction of the third spur gear stage could also be exactly mirrored in that the fourth spur gear is arranged in a rotationally fixed manner on the input shaft as a fixed gear, while the fifth spur gear is rotatably mounted as an idler gear on the output shaft and can be fixed there by actuating the second switching element.
- the first spur gear, the second spur gear and the third spur gear are arranged axially in one plane, with the second spur gear meshing with both the first spur gear and the third spur gear.
- the second spur gear is part of both the first spur gear stage and the second spur gear stage.
- the individual load switching element is designed as a non-positive switching element, in particular as a wet or dry-running friction switching element. This means that the respective input shaft can be coupled to the drive shaft without any problems under load.
- a multi-plate clutch version is also an option here.
- the individual switching element is designed as a positive switching element, in particular as an unsynchronized claw switching element.
- This has the advantage that the individual switching element thus ensures little or no drag losses in its open state, which improves the efficiency of the transmission according to the invention.
- the individual switching element could also be implemented as a locking synchronization.
- there is also an execution of one or more of the Switching elements are considered as non-positive switching elements and here in particular as multi-plate switching elements.
- the invention further relates to a motor vehicle transmission for an agricultural or municipal utility vehicle, this motor vehicle transmission being composed of several transmission groups and accordingly being designed in a group design.
- a transmission which is designed in accordance with one or more of the aforementioned variants according to the invention, forms one of these transmission groups.
- the transmission designed according to one or more of the aforementioned variants forms a main group of the motor vehicle transmission, with the drive shaft being coupled to an upstream, further transmission group.
- This further transmission group is in particular a split group and particularly preferably a power-shiftable split group.
- a coupling to a differential gear set is produced on the output shaft of the transmission according to the invention, via which distribution can be made either as a transverse differential to the drive wheels of a drive axle or as a longitudinal differential, a distribution can be made to several drive axles.
- a power-shiftable motor vehicle transmission can possibly be realized.
- the transmission designed according to one or more of the aforementioned variants can also be used as a PTO transmission in a group-design motor vehicle transmission, whereby the motor vehicle transmission is then in particular an agricultural machinery transmission.
- the transmission designed according to one or more of the aforementioned variants can also be used alone or in combination with other transmissions as a motor vehicle transmission in a car or truck.
- the invention also relates to a motor vehicle drive train in which an aforementioned motor vehicle transmission according to one or more of the above-mentioned written variants is provided.
- a drive side of this motor vehicle transmission preferably the drive shaft of a transmission group provided on the drive side, such as a splitter group, is permanently coupled to an upstream drive machine, which is in particular an internal combustion engine.
- a torsional vibration damper is provided in between.
- a separating clutch can also be placed between the upstream drive machine and the gear group of the motor vehicle transmission provided on the drive side, by means of which the gear group provided on the drive side and thus the motor vehicle transmission can be decoupled from the drive machine.
- the motor vehicle transmission is preferably permanently coupled on the output side within the motor vehicle drive train to at least one drive axle of the agricultural machinery via an intermediate differential gear.
- a drive axle can be permanently coupled to an output side of the motor vehicle transmission, while a further drive axle can only be switched on by actuating a separating clutch.
- the invention further relates to an agricultural or municipal utility vehicle, which is particularly preferably an agricultural tractor.
- This commercial vehicle includes a motor vehicle drive train according to one or more of the aforementioned variants.
- an aforementioned motor vehicle drive train can also be provided in a work machine.
- Fig. 1 is a schematic representation of a motor vehicle drive train of an agricultural vehicle
- FIG. 2 shows a schematic detailed view of the motor vehicle drive train from FIG. 1, shown in the area of a motor vehicle transmission
- Fig. 3 is a schematic individual view of a powershift transmission
- Fig. 4 shows an exemplary switching diagram of the power-shiftable transmission
- 5 to 8 show schematic individual views of the power-shiftable transmission from FIG. 3, shown in different switching states.
- the motor vehicle drive train 1 shows a schematic view of a motor vehicle drive train 1 of an agricultural vehicle, which is preferably an agricultural tractor.
- the motor vehicle drive train 1 includes a drive machine 2, which is designed as an internal combustion engine and which is followed by a motor vehicle transmission 3 in the motor vehicle drive train 1.
- Two drive axles 4 and 5 are also provided in the motor vehicle drive train 1, each of which has two drive wheels 6 and 7 or 8 and 9.
- the drive axle 5 is assigned a differential gear 10, which, as a transverse differential, distributes the input drive power to the two drive wheels 8 and 9, possibly compensating for speed differences.
- the differential gear 10 is connected to the upstream motor vehicle transmission 3, wherein the differential gear 10 can be combined with the motor vehicle transmission 3 in a common housing.
- the motor vehicle transmission 3 can also be connected on the output side to a differential gear 11 of the drive axle 4, whereby this connection can in particular be separated in a targeted manner.
- a differential gear 11 guided drive power is distributed to the two drive wheels 6 and 7, if necessary by compensating for speed differences.
- the drive axle 4 is preferably a front axle of the agricultural machine, while the drive axle 5 is present as the rear axle of the agricultural machine.
- the power-shiftable transmission group 13 is a power-shiftable splitter group of the motor vehicle transmission 3, the transmission group 13 also being coupled to an output shaft 15 with a further transmission group 16 in the form of a transmission 17, which is also designed to be power-shiftable.
- the transmission 17 is connected to the downstream differential gear 10 on an output shaft 18 within the motor vehicle drive train 1 from FIG. 1. Due to the structure of the motor vehicle transmission 3 from the transmission groups 13 and 16, the motor vehicle transmission 3 is designed in a group design.
- FIG. 3 shows a schematic individual view of the transmission 17, the transmission 17 being designed in accordance with a first embodiment of the invention.
- a drive shaft 19 of the transmission 17 is arranged coaxially with the output shaft 18, this drive shaft 19 simultaneously also forming the output shaft 15 of the transmission group 13 connected upstream of the transmission 17 in the motor vehicle drive train 1. Accordingly, a permanent coupling to the upstream gear group 13 is established on the drive shaft 19.
- the transmission 17 also has two input shafts 20 and 21, which are placed axially offset from the output shaft 18 and the drive shaft 19 and also from one another.
- An intermediate shaft 22 is also arranged coaxially with the input shaft 20, while an intermediate shaft 23 is provided coaxially with the input shaft 21.
- the drive shaft 19, the output shaft 18 and the two inputs While the input shafts 20 and 21 are essentially designed as solid shafts, the two intermediate shafts 22 and 23 are in the form of hollow shafts.
- the intermediate shaft 22 is arranged axially overlapping the input shaft 20 and radially surrounding it, whereas the intermediate shaft 23 is placed axially overlapping the input shaft 21 and radially surrounding it.
- two power-shifting elements 24 and 25 are provided in the transmission 17, each of which is designed as non-positive switching elements in the form of wet or dry-running friction-shifting elements.
- the power switching element 24 ensures a rotationally fixed connection of the input shaft 20 to the intermediate shaft 22, whereby this connection can be brought about via the power switching element 24 under load and with prevailing speed differences between the input shaft 20 and the intermediate shaft 22.
- the power switching element 25 connects the input shaft 21 to the intermediate shaft 23 in a rotationally fixed manner, and this can also be carried out under load and existing speed differences between the input shaft 21 and the intermediate shaft 23.
- the transmission 17 has several spur gear stages 26, 27, 28, 29 and 30 as well as switching elements A, B and C.
- the spur gear stage 26 is a spur gear
- the spur gear 32 is rotatably mounted on the output shaft 18.
- the spur gear 32 is also part of the spur gear stage 27, in that the spur gear 32, in addition to the spur gear 31, also meshes with a spur gear 33 and forms the spur gear stage 27 with this.
- the spur gear 33 is placed on the input shaft 21 in a rotationally fixed manner.
- the spur gear stage 26 and the spur gear stage 27 are arranged axially in one plane.
- the spur gear 31 and the spur gear 33 have essentially the same number of teeth, whereby a translation defined between the input shaft 20 and the output shaft 18 via the spur gear stage 26 largely corresponds to a translation that is achieved via the spur gear stage 27 between the input shaft 21 and the output shaft 18 is defined.
- the spur gear stage 28 is composed of two spur gears 34 and 35, which mesh with one another and of which the spur gear 34 is rotatably mounted on the input shaft 20 axially adjacent to the spur gear 31, while the spur gear 35 is axially adjacent to the spur gear 32 is arranged non-rotatably on the output shaft 18.
- spur gear stage 29 two spur gears 36 and 37 are provided, which permanently mesh with one another.
- the spur gear 36 is placed non-rotatably on the intermediate shaft 22 and the spur gear 37 is arranged non-rotatably on the drive shaft 19, so that the drive shaft 19 and the intermediate shaft 22 are constantly coupled to one another via the spur gear stage 29.
- a permanent coupling of the drive shaft 19 to the intermediate shaft 23 is also realized via the spur gear stage 30, in that the spur gear stage 30 is composed of two spur gears 38 and 39 which are constantly meshing with one another, of which the spur gear 38 is rotationally fixed on the intermediate shaft 23 and the spur gear 39 is rotationally fixed is arranged on the drive shaft 19.
- the switching elements A, B and C are each designed as positive individual switching elements, with the individual switching element A or B or C being present in particular as an unsynchronized claw switching element.
- the switching element A is arranged coaxially to the output shaft 18 and, in the closed state, ensures a rotationally fixed connection of the spur gear 32 to the output shaft 18.
- the input shaft 21 is coupled to the output shaft 18 via the spur gear stage 27.
- the switching element A is assigned a coupling element 40 in the form of a sliding sleeve, which can be moved via an associated actuator 41 from a neutral position into a switching position representing the closed state of the switching element A.
- the switching elements B and C are arranged coaxially to the input shaft 20, with the switching element B in its closed state connecting the spur gear 31 to the input shaft 20 in a rotationally fixed manner.
- the input shaft 20 is coupled to the input shaft 21 via the spur gear stages 26 and 27.
- the switching element A is also switched to its closed state at the same time as the switching element B, leads, the input shaft 20 is coupled to the output shaft 18 via the spur gear stage 26.
- a coupling element 42 in the form of a sliding sleeve is also assigned to the switching element B, wherein the coupling element 42 can be specifically moved from a neutral position into a switching position via an associated actuator 43, in which the coupling element 42 maintains the closed state of the switching element B causes.
- the switching element C In its closed state, the switching element C connects the spur gear 34 to the input shaft 20 in a rotationally fixed manner, which accordingly also results in a coupling of the input shaft 20 to the output shaft 18 via the spur gear stage 28.
- the closed state of the switching element C can be brought about via an assigned coupling element 44, which for this purpose is transferred from a neutral position to a switching position. This movement of the coupling element 44 between the neutral position and the switching position is generated via an actuator 45.
- the actuators 41, 43 and 45 of the switching elements A, B and C are in particular automatically controlled via a transmission control unit - not shown here - of the transmission 17, so that the switching elements A, B and C are closed automatically.
- the two powershift elements 24 and 25 are also automatically actuated via this transmission control unit.
- the spur gear stage 30 is placed axially adjacent to the connection of the transmission 17 to the gear group 13 via the drive shaft 19, with the spur gear stage 29, then the spur gear stages 26 and 27 in one plane and finally the spur gear stage 28 following axially.
- the two load-shifting elements 24 and 25 are arranged axially essentially at the same height and lie axially between the spur gear stage 29 on the one hand and the spur gear stages 26 and 27 on the other hand.
- the switching elements A, B and C are placed axially between the spur gear stages 26 and 27 on the one hand and the spur gear stage 28 on the other hand, with the switching elements A and B essentially at the same height axially and axially adjacent to the spur gear stages 26 and 27 are provided.
- gears G1 to G4 By means of the transmission 17, four different transmission ratios can be represented as gears G1 to G4 between the drive shaft 19 and the output shaft 18, with a switching of these gears G1 to G4 being shown in a table in FIG.
- an x indicates a closed state for the load switching elements 24 and 25 as well as the switching elements A, B and C and an o indicates an open state.
- x/o means a closed or open state of the respective switching element A or B or C.
- the power shifting elements 24 and 25 are in the representation of the gears G1 to G4 alternately actuated, which means that gears G1 to G4 can be shifted successively under load in the manner of a dual clutch transmission.
- the first gear G1 is switched between the drive shaft 19 and the output shaft 18 by closing the power shift element 24 and the shift elements A and B respectively.
- the power flow starts from the drive shaft 19 via the spur gear stage 29 to the intermediate shaft
- the third gear G3 is represented by closing the power shift element 24 and the switching element C, the switched state and the associated power flow routing of the third gear G3 being indicated in FIG. 7.
- the power flow starts from the drive shaft 19 via the spur gear Stage 29 is guided to the intermediate shaft 22 and thus also to the input shaft 20, which is connected to it in a rotationally fixed manner via the load switching element 24, with further power flow guidance then being carried out from the input shaft 20 via the spur gear stage 28 to the output shaft 18.
- fourth gear G4 is switched between the drive shaft 19 and the output shaft 18 by closing the power shift element 25 and the shift elements B and C.
- the power flow is guided from the drive shaft 19 via the spur gear stage 30 to the intermediate shaft 23, which is connected in a rotationally fixed manner to the input shaft 21 via the power switching element 25.
- fourth gear G4 there is then a further power flow routing via the two spur gear stages 27 and 26 to the input shaft 20 and then via the spur gear stage 28 to the output shaft 18. Since the spur gears 31 and 33 essentially have the same number of teeth, the translations of the spur gear stages 26 and 27 largely cancel each other out when the rotational movement is transmitted from the input shaft 21 to the input shaft 20.
- the power flow routing is shown in Fig. 8.
- a change from the first gear G1 to the second gear G2 can take place under load by simply transferring the load from the power shift element 24 to the power shift element 25, since the shift element A is actuated in both gears. After switching to second gear G2, the switching element B can then be transferred to an open state.
- a downshift from second gear G2 to first gear G1 can also be carried out under load. This is done in the switched state of the second Gear G2 prepares the downshift by actuating the switching element B in addition to the switching element A and then switching from the power switching element 25 to the power switching element 24 for the actual downshift by opening the power switching element 25 and then closing the power switching element 24.
- this upshift is also prepared before the actual switching between the power shift elements 24 and 25.
- the switching element C is actuated in addition to the switching element A and the load is then transferred from the power switching element 25 to the power switching element 24 by opening the power switching element 25 and then closing the power switching element 24.
- the switching element A can then be opened.
- a downshift from the third gear G3 to the second gear G2 can be carried out under load by first actuating the switching element A in addition to the switching element C when the third gear G3 is engaged.
- the actual downshift is then carried out by opening the power-shifting element 24 and closing the power-shifting element 25, whereby the second gear G2 is engaged.
- the switching element C can then be opened.
- the upshift from the third gear G3 to the fourth gear G4 is achieved by closing the switching element B in addition to the switching element C in the switched state of the third gear G3 in preparation for the actual upshift, with the actual upshift then taking place Opening the load switching element 24 and closing the load switching element 25 is carried out.
- a power-shiftable transmission 46 which is designed according to a second possible embodiment of the invention and is used as a transmission group 16 in the motor vehicle transmission 3 from FIGS. 1 and 2 instead of the transmission 17 can come.
- the gearbox 46 essentially corresponds to the gearbox 17 from FIG.
- intermediate shafts 47 and 48 are now designed as solid shafts.
- the intermediate shaft 47 is located coaxially and at the front side of the input shaft 20, whereby the intermediate shaft 47 can be connected in a rotationally fixed manner to the input shaft 20 by closing the power switching element 24 and is coupled to the drive shaft 19 via the spur gear stage 29.
- the intermediate shaft 48 is arranged coaxially and on the front side of the input shaft 21 and can be connected to the input shaft 21 in a rotationally fixed manner by closing the power switching element 25.
- the intermediate shaft 48 is permanently coupled to the drive shaft 19 by means of the spur gear stage 30.
- FIG 10 shows a schematic representation of a power-shiftable transmission 49 according to a further embodiment of the invention.
- the transmission 49 can also be used in the motor vehicle transmission 3 from FIGS. 1 and 2 instead of the transmission 17 as a transmission group 16 and essentially corresponds to the transmission 17 from FIG of the motor vehicle drive train 1 establishes the drive-side connection of the transmission 49 to the upstream transmission group 13 and is formed by the output shaft 15 of the transmission group 13, is now coaxial with the input shaft 21.
- the load switching element 25 By closing the load switching element 25, the drive shaft 50 is directly connected to the input shaft 21 in a rotationally fixed manner.
- the drive shaft 50 is coupled to the intermediate shaft 22 via two spur gear stages 51 and 52, with a spur gear 53 being arranged in a rotationally fixed manner on the drive shaft 50 in the spur gear stage 51 and in tooth engagement with a spur gear 54, which is placed in a rotationally fixed manner on a shaft 55 .
- the spur gear 54 is also part of the spur gear stage 52, in that, in addition to the spur gear 53, it also meshes with a spur gear 56, which is arranged in a rotationally fixed manner on the intermediate shaft 22.
- the embodiment according to FIG. 10 corresponds to the variant according to FIG. 3, so that reference is made to what has been described in this regard.
- With regard to the shifting of gears G1 to G4 reference is also made here to what is described in FIG. 4.
- FIG. 11 shows a schematic view of a power-shiftable transmission 57 according to a further possible embodiment of the invention.
- This design option can also be used as an alternative to the transmission 17 in the motor vehicle transmission 3 from FIGS. 1 and 2, with the transmission 57 largely corresponding to the previous variant according to FIG. 10.
- an intermediate shaft 47 is now designed as a solid shaft and is placed coaxially and at the front of the input shaft 20. By closing the power switching element 24, the intermediate shaft 47 is connected to the input shaft 20 in a rotationally fixed manner.
- the spur gear 56 is placed on this intermediate shaft 47 in a rotationally fixed manner.
- the design option according to FIG. 11 corresponds to the variant according to FIG. 10, so that reference is made to what has been described in this regard.
- Regarding the shifting of gears G1 to G4 reference is made to what is described in FIG. 4.
- a power-shiftable transmission can be realized, which is characterized by a compact structure and low manufacturing effort and in which a large number of different gears can be shifted at the same time.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380050835.5A CN119384566A (zh) | 2022-07-11 | 2023-07-10 | 用于以分组结构形式实施的机动车变速器的能动力换挡的变速器 |
| US18/880,766 US20260002579A1 (en) | 2022-07-11 | 2023-07-10 | Power-shift transmission for a motor vehicle transmission of the range change type |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022207035 | 2022-07-11 | ||
| DE102022207035.6 | 2022-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024013078A1 true WO2024013078A1 (de) | 2024-01-18 |
Family
ID=87280587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/069014 Ceased WO2024013078A1 (de) | 2022-07-11 | 2023-07-10 | Lastschaltbares getriebe für ein in gruppenbauweise ausgeführtes kraftfahrzeuggetriebe |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20260002579A1 (de) |
| CN (1) | CN119384566A (de) |
| DE (1) | DE102022207638B4 (de) |
| WO (1) | WO2024013078A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023200195B4 (de) | 2023-01-12 | 2024-10-17 | Zf Friedrichshafen Ag | Lastschaltbares Getriebe für ein in Gruppenbauweise ausgeführtes Kraftfahrzeuggetriebe, Kraftfahrzeuggetriebe und landwirtschaftliches oder kommunales Nutzfahrzeug |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2079877A (en) * | 1980-07-05 | 1982-01-27 | Rolls Royce Motors Ltd | Multi-ratio gearbox |
| WO1992008067A1 (en) * | 1990-11-01 | 1992-05-14 | Ab Volvo | Motor vehicle gearbox |
| US5353661A (en) * | 1993-02-09 | 1994-10-11 | General Motors Corporation | Power transmission with coaxial input and output shafts supported at one end of each shaft by a floating bearing support |
| WO2001065144A1 (en) * | 2000-03-01 | 2001-09-07 | Volvo Lastvagnar Ab | Motor vehicle gearbox |
| US20100269613A1 (en) * | 2009-04-24 | 2010-10-28 | Kang Myungkoo | Multi-clutch transmission having dual front-positioned gears and method of operating the same |
| EP2853431A2 (de) * | 2013-09-19 | 2015-04-01 | CLAAS Tractor S.A.S. | Zapfwellengetriebe für eine landwirtschaftliche Arbeitsmaschine |
| EP2916044A1 (de) | 2013-09-27 | 2015-09-09 | CLAAS Tractor S.A.S. | Schaltgetriebeanordnung |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7896770B2 (en) * | 2007-08-01 | 2011-03-01 | GM Global Technology Operations LLC | Multi-speed transmission |
| WO2021089126A1 (en) * | 2019-11-05 | 2021-05-14 | Volvo Truck Corporation | Transmission assembly for a vehicle |
-
2022
- 2022-07-26 DE DE102022207638.9A patent/DE102022207638B4/de active Active
-
2023
- 2023-07-10 CN CN202380050835.5A patent/CN119384566A/zh active Pending
- 2023-07-10 WO PCT/EP2023/069014 patent/WO2024013078A1/de not_active Ceased
- 2023-07-10 US US18/880,766 patent/US20260002579A1/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2079877A (en) * | 1980-07-05 | 1982-01-27 | Rolls Royce Motors Ltd | Multi-ratio gearbox |
| WO1992008067A1 (en) * | 1990-11-01 | 1992-05-14 | Ab Volvo | Motor vehicle gearbox |
| US5353661A (en) * | 1993-02-09 | 1994-10-11 | General Motors Corporation | Power transmission with coaxial input and output shafts supported at one end of each shaft by a floating bearing support |
| WO2001065144A1 (en) * | 2000-03-01 | 2001-09-07 | Volvo Lastvagnar Ab | Motor vehicle gearbox |
| US20100269613A1 (en) * | 2009-04-24 | 2010-10-28 | Kang Myungkoo | Multi-clutch transmission having dual front-positioned gears and method of operating the same |
| EP2853431A2 (de) * | 2013-09-19 | 2015-04-01 | CLAAS Tractor S.A.S. | Zapfwellengetriebe für eine landwirtschaftliche Arbeitsmaschine |
| EP2916044A1 (de) | 2013-09-27 | 2015-09-09 | CLAAS Tractor S.A.S. | Schaltgetriebeanordnung |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022207638B4 (de) | 2024-02-15 |
| US20260002579A1 (en) | 2026-01-01 |
| CN119384566A (zh) | 2025-01-28 |
| DE102022207638A1 (de) | 2024-01-11 |
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