EP4058688A1 - Doppelkupplungsgetriebe für ein kraftfahrzeug, insbesondere für einen kraftwagen, verfahren zum betreiben eines solchen doppelkupplungsgetriebes sowie kraftfahrzeug - Google Patents
Doppelkupplungsgetriebe für ein kraftfahrzeug, insbesondere für einen kraftwagen, verfahren zum betreiben eines solchen doppelkupplungsgetriebes sowie kraftfahrzeugInfo
- Publication number
- EP4058688A1 EP4058688A1 EP20730580.6A EP20730580A EP4058688A1 EP 4058688 A1 EP4058688 A1 EP 4058688A1 EP 20730580 A EP20730580 A EP 20730580A EP 4058688 A1 EP4058688 A1 EP 4058688A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transmission
- gear
- shaft
- motor vehicle
- gears
- 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.)
- Pending
Links
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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/0059—Braking of gear output shaft using simultaneous engagement of engaging means, e.g. clutches or brakes, applied for different 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/68—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings
- F16H61/684—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive
- F16H61/688—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive with two inputs, e.g. selection of one of two torque-flow paths by 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
- 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
- F16H2003/0931—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 each countershaft having an output gear meshing with a single common gear on the output shaft
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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
- F16H2200/0047—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising five forward speeds
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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
- F16H2312/00—Driving activities
- F16H2312/02—Driving off
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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
- F16H2312/00—Driving activities
- F16H2312/12—Parking
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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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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Definitions
- Double clutch transmission for a motor vehicle in particular for a motor vehicle, method for operating such a double clutch transmission and motor vehicle DESCRIPTION:
- the invention relates to a dual clutch transmission for a motor vehicle according to the preamble of claim 1. Furthermore, the invention relates to a method for operating such a dual clutch transmission according to the preamble of claim 7. The invention also relates to a motor vehicle with at least one such dual clutch transmission.
- DE 10 2016 221 794 A1 discloses a motor vehicle transmission with a parking lock device, having a transmission output shaft, a transmission housing and a gear set, which can be connected to the transmission output shaft in a torque-transferring manner or is connected to it.
- DE 10 2010 028 026 A1 shows a hybrid drive train for a vehicle as known, with at least one internal combustion engine.
- DE 10 2016 105 189 A1 discloses a method for controlling a parking lock in a two-speed transmission of an electrically drivable vehicle.
- DE 199 50 696 A1 discloses a dual clutch transmission for a motor vehicle.
- the object of the present invention is to create a double clutch transmission, a method for operating such a double clutch transmission and a motor vehicle with such a double clutch transmission, so that a particularly high level of comfort can be achieved.
- this object is achieved by a dual clutch transmission with the features of claim 1, by a method with the features of claim 7 and by a motor vehicle with the features of claim 10.
- a first aspect of the invention relates to a dual clutch transmission for a motor vehicle preferably designed as a motor vehicle, in particular as a passenger vehicle.
- a motor vehicle preferably designed as a motor vehicle, in particular as a passenger vehicle.
- at least one wheel of the motor vehicle can be driven via the dual clutch transmission.
- at least or exactly two wheels of the motor vehicle can be driven via the double clutch transmission, whereby, for example, the motor vehicle can be driven as a whole.
- the respective wheel is, for example, a ground contact element, via which the motor vehicle is supported or can be supported in the vertical direction of the vehicle downwards on a ground. If the motor vehicle is driven along the floor while the motor vehicle is supported on the floor in the vertical direction of the vehicle, the wheel rolls on the floor.
- the double clutch transmission has a first partial transmission and a second partial transmission.
- the dual clutch transmission also has a first clutch assigned to the first partial transmission and a second clutch assigned to the second partial transmission.
- the motor vehicle has a drive motor from which the motor vehicle can be driven via the double clutch transmission.
- the drive motor comprises an output shaft designed, for example, as a crankshaft.
- the feature that the first clutch is assigned to the first sub-transmission can in particular be understood as meaning that the first sub-transmission, in particular a transmission input shaft of the first sub-transmission, can be coupled to the output shaft via the first clutch or by means of the first clutch, in particular while the second clutch rend is open.
- the second sub-transmission in particular a second transmission input shaft, of the second sub-transmission
- the motor vehicle can be driven by the drive motor via the dual clutch transmission and in particular via the first sub-transmission, while the drive motor does not drive the motor vehicle via the second sub-transmission.
- the motor vehicle can be driven by the drive motor via the dual clutch transmission and thereby via the second sub-transmission, while the drive motor does not drive the motor vehicle via the first sub-transmission.
- the respective clutch is preferably designed as a friction clutch, in particular as a multi-disc clutch, whereby a particularly high level of comfort, in particular driving comfort, of the motor vehicle can be achieved.
- the dual clutch transmission is to be shifted into a parking lock state in which, in particular at least or precisely, two gears of one of the subtransmissions are engaged at the same time.
- the dual clutch transmission designed for example as an automatic or automated Doppelkupplungsgetrie be, is designed to switch into a parking lock state in which the two gears of one sub-transmission are engaged at the same time as a result of a person actuating an operating element of the motor vehicle are. It is preferably provided that in the parking lock state the clutch assigned to one sub-transmission, the two gears of which are engaged at the same time, is closed. Furthermore, it is preferably provided that the respective other clutch is open in the parking lock state.
- the double clutch transmission can be braced or braced, for example by a downhill force acting on the motor vehicle or an output torque caused by the downhill force, which is for example via a transmission output shaft or transmission output shaft of the double clutch transmission is introduced into the dual clutch transmission, in particular the one sub-transmission.
- the downhill force and the resulting output torque occur, for example, when the motor vehicle is parked on a slope, that is, on a downward gradient.
- the parking lock state can prevent the motor vehicle from rolling away undesirably.
- the shafts are preferably formed separately from one another.
- the shafts are basically rotatable relative to one another, especially when the shafts are not blocked against rotations occurring relative to one another.
- the feature that the respective gear wheel is designed as a loose wheel is to be understood in particular that the gear wheel or loose wheel is rotatably arranged on the respective shaft per se or on its own.
- the first switching element is thereby switchable between at least one connection state and at least one release state, in particular movable relative to the first shaft and / or translationally, between the first connection state and the first release state.
- the first gear In the first connection, the first gear is connected to the first shaft in a rotationally test manner by means of the first switching element.
- the first release state however, the first gear is rotatable relative to the first shaft or, in the first release state, the first switching element releases the first gear for rotation relative to the first shaft.
- the second switching element can be switched between at least one second connection state and at least one second release state, for example.
- the second Druckele element in particular relative to the second shaft and / or in a translatory manner, can be moved between the second connection state and the second release state.
- the second gear In the second connection state, the second gear is non-rotatably connected to the second shaft by means of the second switching element.
- the second release state In the second release state, however, the second gear is rotatable relative to the second shaft. In other words, in the second release state, the second switching element releases the second gear for rotation relative to the second shaft.
- the gears and the shift elements are, for example, part of a gear set whose arrangement or configuration is selected according to the invention so that the first shift element assigned to the first gear is not on the same shaft as the second shift element assigned to the second gear. Since the above-mentioned gears are used to implement the parking lock state and thereby tighten the dual clutch transmission and thus lock it, the gears are also referred to as locking gears. Since one part of the transmission is also used to implement the parking lock state, one part of the transmission is also referred to as a locked part of the transmission. Since all gears of the other sub-transmission are preferably designed in the parking lock state, the other sub-transmission is also referred to as an unlocked sub-transmission, for example.
- a parking lock of the double clutch transmission is activated in the parking lock state.
- the gears and shifting elements that are already in use are used, so that a separate and mechanical parking lock device that is additionally provided for this purpose can be avoided.
- the invention enables in particular a release of the parking lock, i.e. ending or deactivation of the parking lock state, by means of any of the clutches also known as travel clutches and in particular independently of a slope inclination and thus regardless of whether, for example, the downhill force in the vehicle's longitudinal direction from the rear acts on the motor vehicle from the front or from the front to the rear.
- the above-described arrangement of the wheel set means that when the parking lock state is ended or when the parking lock state is ended, a frictional connection can always be guaranteed immediately in the direction of travel desired by the driver, i.e. regardless of whether the driver wants to drive the vehicle forward in the vehicle's longitudinal direction or backward in the vehicle's longitudinal direction .
- the parking lock state is activated in particular when the motor vehicle is at a standstill.
- the parking lock state is ended.
- the driver of the motor vehicle wishes to drive the motor vehicle forward in the longitudinal direction of the vehicle or backwards in the longitudinal direction of the vehicle.
- This can now be implemented with particularly little delay, in particular without delay, by means of the invention.
- the parking lock state can be ended particularly quickly by the invention, so that the driver can start the motor vehicle with particularly little delay, in particular without delay.
- the parking lock state can be ended at least almost without jerk or at least with little jerk.
- the parking lock state can be ended without excessive movements and / or noises of the motor vehicle that can be perceived by occupants of the motor vehicle.
- the invention is based in particular on the following findings: If the motor vehicle is parked on an incline, for example, and the parking lock is then engaged or activated, the double clutch transmission, in particular from a partial transmission, is driven by the downhill force, which is realized from the weight of the motor vehicle, and braced in particular by the downhill drive torque resulting from the downhill force.
- a torque input can take place via one of the clutches.
- This torque is opposed, for example, to the downhill force or the downhill torque.
- the clutch assigned to one part of the transmission is used, or the clutch assigned to the other, non-locked sub-transmission is used as the one, for example.
- the torque is introduced into one, locked sub-transmission in such a way that at least or precisely one gear of the other, non-locked sub-transmission is engaged.
- the torque is then introduced into the one, locked sub-transmission via the clutch assigned to the other, non-locked sub-transmission and via the engaged gear of the other, non-locked sub-transmission.
- the torque can counteract the downhill drive torque, also referred to as tension, in particular in such a way that the downhill drive torque or the tension of one sub-transmission caused by the downhill drive torque is at least reduced or eliminated.
- the parking lock can be deactivated, i.e. the parking lock state can be ended without causing an excessive jolt.
- the parking lock is designed in such a way, that is to say the parking lock state is ended, for example, in such a way that, in particular after the introduction of the torque into one sub-transmission was started and preferably during the torque into one sub-transmission is initiated, at least one of the locking gears or both locking gears are designed.
- the parking lock renSh particularly quiet, in particular noiselessly, can be ended.
- a corresponding frictional connection can be set in the dual clutch transmission with particularly little delay, in particular without delay, so that the parking lock state is terminated particularly quickly the motor vehicle can be driven or started with little deceleration in the direction of travel desired by the driver.
- one sub-transmission has a reverse gear.
- a reverse gear is designed to cause reverse travel or is engaged to cause reverse travel.
- Another embodiment is characterized in that one of the locking gears is the reverse gear.
- one of the gears is a forward gear.
- the forward gear is designed to bring about forward travel of the motor vehicle or is engaged to effect forward travel. Because one of the locking gears is the forward gear, the parking lock state can be ended particularly quickly and the motor vehicle can be started with particularly little delay.
- one of the locking gears is the reverse gear and the other locking gear is the forward gear.
- the forward gear and the reverse gear or the locking gears are preferably gears of the same sub-transmission. In particular, the following was found: If, for example, the motor vehicle is on a slope while the dual clutch transmission is in the parking lock state, so that a downhill force acts on the motor vehicle, a torque resulting from the downhill force is introduced into the dual clutch transmission.
- the respective switching element is a form-fitting switching element, in particular a Klauenkupp ment.
- Another embodiment is characterized in that both clutches are closed at the same time in the park locked state. As a result, the parking lock state can be ended particularly quickly and the motor vehicle can be approached with particularly little delay.
- a second aspect of the invention relates to a method for operating a dual clutch transmission, in particular according to the first aspect of the invention.
- the dual clutch transmission comprises a first sub-transmission, a second sub-transmission, a first clutch assigned to the first sub-transmission and a second clutch assigned to the second sub-transmission.
- the dual clutch transmission is in a park locked state in which two gears of one of the subtransmissions are engaged at the same time.
- the invention provides that the two gears of one part of the transmission are simultaneously inserted in the park locked state by a loose wheel designed as a loose wheel and rotatable on a first shaft of one part of the transmission arranged first gear of a first of the gears by means of a gear assigned to the first gear, arranged on the first shaft and rotatably connected to the first shaft first switching element is rotatably connected to the first shaft, while a wheel designed as a Los and on a second shaft of the one Partial gear rotatably arranged second gear of the second gear by means of a second gear assigned to the second gear, arranged on the second shaft and rotationally fixed to the second shaft connected to the second shifting element rotatably connected to the second shaft.
- one embodiment of the invention provides that a first step, also designated with a, and a second step, designated with b, are carried out to end the parking lock state.
- a torque caused or provided by a drive element of the motor vehicle is introduced into one part of the transmission via one of the clutches, i.e.
- the second step of the method at least one of the locking gears engaged in the first step is disengaged.
- the second step is carried out after the introduction of the torque into one sub-transmission has started and, in particular, while the torque is still being introduced into one sub-transmission.
- the torque preferably counteracts the aforementioned downhill torque.
- the previously described tensioning of the dual clutch transmission can at least be reduced or canceled, so that the at least one gear can then be disengaged without causing an excessive jolt that is perceptible, for example, by the occupants of the motor vehicle.
- the method thus makes it possible to end the parking lock state, that is to say to disengage or deactivate the parking lock, without causing an excessive jolt that can be felt by the occupants of the motor vehicle.
- a third aspect of the invention relates to a motor vehicle, preferably designed as a motor vehicle, in particular as a passenger vehicle. stuff which has an inventive dual clutch transmission according to the first aspect of the invention.
- Advantages and advantageous refinements of the first and second aspects of the invention are to be regarded as advantages and advantageous refinements of the third aspect of the invention, and vice versa.
- the invention also includes further developments of the method according to the invention and the motor vehicle according to the invention which have features as they have already been described in connection with the further developments of the dual clutch transmission according to the invention. For this reason, the corresponding developments of the method according to the invention and the motor vehicle according to the invention are not described again here.
- the motor vehicle according to the invention is preferably configured as a motor vehicle, in particular as a passenger vehicle or truck, or as a passenger bus or motorcycle.
- the invention also includes the combinations of features of the embodiments described approximately.
- FIGURE shows a schematic representation of a double clutch transmission of a motor vehicle according to the invention.
- the single Fig. Shows a schematic representation of a Doppelkupp treatment transmission 10 of a motor vehicle, which is preferably used as a motor vehicle gene or is preferably designed as a passenger car.
- the motor vehicle has at least one drive motor, by means of which at least two wheels of the motor vehicle can be driven via the dual clutch transmission 10. By driving the wheels, the motor vehicle as a whole can be or is driven.
- the wheels are ground contact elements via which the motor vehicle can be supported or supported der on a ground in the vertical direction of the vehicle.
- the wheels are also referred to as vehicle wheels and roll on the floor when the motor vehicle is driven along the floor while it is supported on a floor in the vertical direction of the vehicle.
- the drive motor is shown particularly schematically in the figure and denoted by 12 there.
- the drive motor 12 can be an internal combustion engine designed, for example, as a floating piston machine, or it can be an electrical machine.
- the drive motor 12 has a drive shaft 14 configured, for example, as a crankshaft.
- the dual clutch transmission 10 has a first partial transmission 16, which includes, for example, three first gears 18a-c.
- the first partial transmission 16 has a first transmission input shaft 20, which is in the present case designed as a flea shaft.
- the dual clutch transmission 10 also includes a second partial transmission 22, which has a second transmission input shaft 24 and second gears 26a-c.
- Gears 18a-c are, for example, odd gears or are also referred to as odd gears, whereby, for example, gear 18a can be the so-called first gear, gear 18b the so-called third gear and gear 18c the so-called fifth gear of the dual clutch transmission 10 .
- the gear 18a is a reverse gear for causing the motor vehicle to travel in reverse.
- the gears 18b and 18c are forward gears for effecting a respective forward drive of the motor vehicle.
- the gears 26a-c are, for example, also referred to as straight gears or are so-called straight gears of the dual clutch transmission 10, for example, gear 26a can be the second gear, gear 26b the fourth gear and gear 26c the sixth gear of the dual clutch transmission 10.
- the gears 26a-c are forward gears for causing the motor vehicle to travel forward.
- the dual clutch transmission 10 has a first clutch 28 assigned to the partial transmission 16, which, for example, with respect to the partial transmissions 16 and 22, in particular with respect to the transmission input shafts 20 and 24, exclusively to the partial transmission 16 or exclusively to the transmission input shaft 20, but not to the partial transmission 22 and is not assigned to the transmission input shaft 24.
- the dual clutch transmission 10 also includes a second clutch 30 assigned to the sub-transmission 22, which, for example, based on the sub-transmissions 16 and 22, in particular based on the transmission input shafts 20 and 24, exclusively Lich the sub-transmission 22 or exclusively the transmission input shaft 24, but not is assigned to the partial transmission 16 or not to the transmission input shaft 20.
- the transmission input shaft 20 is designed as a hollow shaft, which in the present case is at least partially, in particular at least predominantly or completely, penetrated by the transmission input shaft 24, designed for example as a solid shaft.
- the respective partial transmission 16 to 22 also has a side shaft 32 or 34, which is also referred to as a secondary shaft.
- the dual clutch transmission 10 also has a transmission output shaft 36 common to the partial transmissions 16 and 20, in particular the side shafts 32 and 34, which can be driven by the side shafts 32 and 34 and is also referred to as a transmission output shaft.
- the drive motor 12 can provide at least one drive torque via its output shaft 14, which is initiated via the respective clutch 28 or 30 into the respective sub-transmission 16 or 22 and transmitted via it to the transmission output shaft 36 who can. In this way, the aforementioned wheels can be driven by the drive motor 12 via the dual clutch transmission 10.
- the clutch 30 when the clutch 28 is closed, and it is also preferably provided that the clutch 28 is opened when the clutch 30 is closed.
- only one of the partial transmissions 16 and 22 is preferably always connected to the output shaft 14 in a torque-transmitting manner via the respective clutch 28 or 30.
- the dual clutch transmission 10 is designed to shift into a parking lock state, in particular as a result of the detection of an actuation of an operating element of the motor vehicle caused by a person.
- the double clutch transmission 10 is switched into a parking lock state during the method.
- the parking lock state for example, the gears 18a and 18c of the partial transmission 16 are engaged simultaneously, in particular while the or all gears 26a-c of the respective other partial transmission 22 are disengaged.
- a mechanical parking lock is activated, since the partial transmission 16, also referred to as a locked partial transmission, can be tensioned or braced ver. In this way, especially when the motor vehicle is parked on a slope or on a downward slope, it is secured against undesired rolling away, since the bracing of the partial transmission 16 prevents the wheels from rotating. In particular, if the motor vehicle has fallen on or down a slope.
- a downhill force resulting from the weight of the motor vehicle acts on the motor vehicle.
- This downhill driving force results in a downhill driving torque which, for example, in the parking lock state, is introduced into the double clutch transmission 10, in particular the partial transmission 16, via the wheels and the transmission output shaft 36 and thus acts on the double clutch transmission 10, in particular on the partial transmission 16.
- the downhill torque acts as a tensioning torque Ver, by which the sub-transmission 16 is tensioned.
- the gear 18a has two gears 38 and 40
- the gear 40 on the transmission input shaft 20 and the gear 38 on the side shaft 32 is angeord net.
- the gear 18c comprises two intermeshing gears 42 and 44, the gear 44 being arranged on the transmission input shaft 20 and the gear 42 being arranged on the side shaft 32.
- the transmission input shaft 20 and the side shaft 32 are shafts of the dual clutch transmission 10, in particular of the partial transmission 16, the shafts being formed separately from one another and rotatable relative to one another.
- the shafts are arranged offset to one another, the shafts running at least essentially parallel to one another.
- the gear 38 arranged on the side shaft 32 is designed as a loose wheel which is rotatably arranged on the side shaft 32.
- the gear 44 arranged on the transmission input shaft 20 is designed as a loose wheel which is arranged on the transmission input shaft 20 in a rotatable manner.
- the gear 18a is designed as the aforementioned reverse gear.
- the gear 38 does not mesh with the gear 40, but an intermediate gear 46 assigned to the gears 38 and 40 is provided for reversing the direction of rotation.
- the intermediate gear 46 meshes with the gears 38 and 40 at the same time.
- the gear 38 which is designed as a loose wheel, is assigned a shifting element 48 designed as a shift sleeve or claw clutch and thus as a form-fitting Wegele element, which is non-rotatably connected to the side shaft 32 and can be switched between a first connection state shown in the figure and a first release state, especially relative is translationally movable to the side shaft 32.
- the switching element 48 releases the gearwheel 38 for rotation relative to the side shaft 32.
- the gear 38 is connected to the side shaft 32 in a rotationally fixed manner by means of the switching element 48, in particular in a form-fitting manner.
- the gear wheel 44 is also designed as a loose wheel, which is rotatably arranged on the transmission input shaft 20.
- the gear 44 meshes directly with the gear 42.
- the gear 44 is assigned a second switching element 50 designed as a shift sleeve or dog clutch and thus as a form-fitting shift element, which can be switched between at least one second connection state shown in the figure and a second release state. in particular, can be moved translationally relative to the transmission input shaft 20. In the second release state, the switching element 50 releases the gear 44 for rotation relative to the transmission input shaft 20. In the second connection state, however, the gear 44 is non-rotatably connected to the transmission input shaft 20 by means of the switching element 50.
- the parking lock state can be ended particularly quickly, i.e. the parking lock can be deactivated or deactivated particularly quickly, regardless of whether the downhill force acts in the vehicle's longitudinal direction from front to back or from back to front and regardless of whether whether the driver, when starting up the initially at a standstill power vehicle wishes to start the motor vehicle in the longitudinal direction of the vehicle forwards or backwards.
- a traction required for starting can always be implemented immediately in such a way that the driver can drive the vehicle in the direction he wishes to drive without causing excessive deceleration and without causing excessive load jolt when the parking lock is deactivated comes.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019130483.0A DE102019130483B4 (de) | 2019-11-12 | 2019-11-12 | Doppelkupplungsgetriebe für ein Kraftfahrzeug, insbesondere für einen Kraftwagen, Verfahren zum Betreiben eines solchen Doppelkupplungsgetriebes sowie Kraftfahrzeug |
| PCT/EP2020/064487 WO2021094001A1 (de) | 2019-11-12 | 2020-05-26 | Doppelkupplungsgetriebe für ein kraftfahrzeug, insbesondere für einen kraftwagen, verfahren zum betreiben eines solchen doppelkupplungsgetriebes sowie kraftfahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4058688A1 true EP4058688A1 (de) | 2022-09-21 |
Family
ID=70977932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20730580.6A Pending EP4058688A1 (de) | 2019-11-12 | 2020-05-26 | Doppelkupplungsgetriebe für ein kraftfahrzeug, insbesondere für einen kraftwagen, verfahren zum betreiben eines solchen doppelkupplungsgetriebes sowie kraftfahrzeug |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11988278B2 (de) |
| EP (1) | EP4058688A1 (de) |
| CN (1) | CN114729680A (de) |
| DE (1) | DE102019130483B4 (de) |
| WO (1) | WO2021094001A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023112390B4 (de) * | 2023-05-11 | 2025-07-03 | Audi Aktiengesellschaft | Fahrzeug mit einem Getriebe sowie Verfahren zum Betreiben eines solchen Getriebes |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19950696A1 (de) * | 1999-10-21 | 2001-04-26 | Volkswagen Ag | Doppelkupplungsgetriebe und Verfahren zur Steuerung eines automatisierten Doppelkupplungsgetriebes |
| DE102005025273B4 (de) * | 2005-06-02 | 2013-11-28 | Daimler Ag | Doppelkupplungsgetriebe |
| JP2007331654A (ja) * | 2006-06-16 | 2007-12-27 | Aisin Ai Co Ltd | パーキングロック機能を備えた歯車変速装置 |
| DE102007019241A1 (de) * | 2007-04-24 | 2008-10-30 | Zf Friedrichshafen Ag | Verfahren zur Steuerung eines Doppelkupplungsgetriebes und Doppelkupplungsgetriebe zur Durchführung dieses Verfahrens |
| DE102010028026B4 (de) * | 2010-04-21 | 2025-04-17 | Zf Friedrichshafen Ag | Hybridantriebsstrang und Verfahren zum Betreiben eines Hybridantriebsstranges |
| DE102011108013A1 (de) * | 2011-07-20 | 2013-01-24 | Thyssenkrupp System Engineering Gmbh | Getriebeverspannendes Verfahren zum Messen und Prüfen eines mindestens zwei Teilgetriebe aufweisenden Getriebes, insbesondere eines Doppelkupplungsgetriebes |
| DE102016105189B4 (de) * | 2016-03-21 | 2025-01-16 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verfahren zum Steuern einer Parksperre eines Fahrzeugs |
| DE102016221794B4 (de) * | 2016-11-08 | 2020-09-24 | Bayerische Motoren Werke Aktiengesellschaft | Parksperre über Getriebeschaltelemente |
| DE102017117079A1 (de) * | 2017-07-28 | 2019-01-31 | GETRAG B.V. & Co. KG | Kraftfahrzeug-Immobilisierungsverfahren und Doppelkupplungsgetriebe |
| EP3467353A1 (de) * | 2017-10-04 | 2019-04-10 | Ningbo Geely Automobile Research & Development Co. Ltd. | Verfahren zur steuerung eines getriebes |
-
2019
- 2019-11-12 DE DE102019130483.0A patent/DE102019130483B4/de not_active Expired - Fee Related
-
2020
- 2020-05-26 US US17/771,922 patent/US11988278B2/en active Active
- 2020-05-26 WO PCT/EP2020/064487 patent/WO2021094001A1/de not_active Ceased
- 2020-05-26 EP EP20730580.6A patent/EP4058688A1/de active Pending
- 2020-05-26 CN CN202080078405.0A patent/CN114729680A/zh not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021094001A1 (de) | 2021-05-20 |
| CN114729680A (zh) | 2022-07-08 |
| DE102019130483B4 (de) | 2022-08-11 |
| DE102019130483A1 (de) | 2021-05-12 |
| US11988278B2 (en) | 2024-05-21 |
| US20220373077A1 (en) | 2022-11-24 |
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