EP4363745A1 - Verfahren zum antreiben eines fahrzeugs und antriebsanordnung - Google Patents
Verfahren zum antreiben eines fahrzeugs und antriebsanordnungInfo
- Publication number
- EP4363745A1 EP4363745A1 EP22729157.2A EP22729157A EP4363745A1 EP 4363745 A1 EP4363745 A1 EP 4363745A1 EP 22729157 A EP22729157 A EP 22729157A EP 4363745 A1 EP4363745 A1 EP 4363745A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- planetary gear
- automatic transmission
- speed
- drive
- vehicle
- 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
- F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/38—Inputs being a function of speed of gearing elements
- F16H59/40—Output shaft speed
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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
- F16H61/20—Preventing gear creeping ; Transmission control during standstill, e.g. hill hold control
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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
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H2003/445—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion without permanent connection between the input and the set of orbital gears
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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
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H2003/447—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion without permanent connection between the set of orbital gears and the output
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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
- F16H2037/049—Forward-reverse units with forward and reverse gears for achieving multiple forward and reverse gears, e.g. for working machines
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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
- F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H59/72—Inputs being a function of gearing status dependent on oil characteristics, e.g. temperature, viscosity
- F16H2059/725—Sensing or calculating temperature of oil in friction devices, e.g. wet clutches, to prevent overheating of friction linings
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe ; Circumventing or fixing failures
- F16H2061/122—Avoiding failures by using redundant parts
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe ; Circumventing or fixing failures
- F16H2061/1256—Detecting malfunction or potential malfunction, e.g. fail safe ; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected
- F16H2061/1276—Detecting malfunction or potential malfunction, e.g. fail safe ; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected the failing part is a friction device, e.g. clutches or brakes
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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
- F16H61/20—Preventing gear creeping ; Transmission control during standstill, e.g. hill hold control
- F16H2061/202—Active creep control for slow driving, e.g. by controlling clutch slip
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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
- F16H2200/0052—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising six 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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0078—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratio comprising twelve or more forward speeds
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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
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/201—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with three sets of orbital gears
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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
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/2012—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with four sets of orbital gears
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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
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2043—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with five engaging means
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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
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2048—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with seven engaging means
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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
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2064—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes using at least one positive clutch, e.g. dog clutch
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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
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2094—Transmissions using gears with orbital motion using positive clutches, e.g. dog 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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2097—Transmissions using gears with orbital motion comprising an orbital gear set member permanently connected to the housing, e.g. a sun wheel permanently connected to the housing
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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
- F16H2312/06—Creeping
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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
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/62—Gearings having three or more central gears
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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
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/62—Gearings having three or more central gears
- F16H3/66—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another
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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
- F16H61/686—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 orbital gears
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/50—Signals to an engine or motor
Definitions
- the invention relates to a method for driving a vehicle at low speed and a drive arrangement for driving a vehicle, in particular a special rail vehicle.
- Vehicles which, in addition to the usual driving and cruising speeds, are also driven over a long period of time at consistently low speeds, ie when driving slowly.
- rail construction vehicles that are used for track construction or overhead line construction must be driven constantly at very low speeds such as 3, 5, 7 or 9 km/h, even over a long period of time, to carry out the work.
- rail vehicles should also be able to be driven at a significantly higher driving speed for faster journeys.
- the higher driving speed is required, for example, to be able to drive quickly from one construction site to another.
- a drive arrangement or a drive train with a multi-stage automatic transmission can be used in planetary design.
- Vehicles that are equipped with a stepped automatic transmission in planetary design with a hydrodynamic torque converter cannot drop below a constant minimum speed without additional measures. Due to the hydromechanical transmission, when the engine is idling, an equilibrium is formed via the idling speed controller, the torque converter and the driving resistance, which leads to a minimum constant speed that cannot be undershot. In addition, high accuracy requirements regarding the constant speed of +/- 1 km/h often cannot be met due to control inaccuracies of the engine speed when driving slowly.
- EP 3434 550 A1 discloses a drive arrangement for driving at least one axle of a rail vehicle, which has a mechanical drive train and a hydrostatic drive train. Both drive trains mentioned are connected on the drive side to a drive motor of the rail vehicle. On the output side, the mechanical drive train and the hydrostatic drive train are brought together in a wheel set transmission arranged on a wheel set shaft in order to drive the wheel set shaft via the wheel set transmission.
- Such drive assemblies are typically used in rail construction vehicles.
- Such rail construction vehicles can be driven train in a working operation at a very low working speed via the hydrostatic drive, while they are driven for faster journeys via the me chanical drive train.
- the additional hydrostatic drive train requires a considerable amount of additional work.
- a method for controlling constant slow travel of a vehicle is proposed.
- the method is intended for a vehicle that has a drive arrangement that includes a stepped automatic transmission with a hydrodynamic torque converter and with a plurality of shifting elements for setting different gear ratios.
- a first transmission stage in the stepped automatic transmission is set.
- the shifting elements can be designed in particular as friction shifting elements in the form of a multi-plate clutch or multi-plate brake.
- the first and the second shifting element are preferably completely closed for constant slow travel, so that there is no slippage between the shafts to be connected in the stepped automatic transmission.
- the gear ratios are each automatically inserted or switched by closing Shen of at least one friction shift element, but mostly two friction shift elements.
- the gear stage provided for this purpose can be shifted with a starting transmission, i.e. the starting gear stage, by closing the relevant friction shift elements.
- a starting gear in two directions for example a first forward gear and a reverse gear, or a starting gear with the same ratio in each direction for vehicles that are operated with two equivalent directions of travel, such as rail vehicles.
- the third shifting element designed as a friction shifting element is actuated as a function of an output speed.
- the actuation of the third switching element is therefore not required to drive the vehicle.
- the third switching element is actuated in order to brake the vehicle in a targeted manner and thus achieve the constant speed when driving slowly.
- the transmission or the vehicle is braked by the targeted intervention of the third shifting element, thus ensuring constant slow travel with different driving resistances. This is particularly necessary when driving slowly when coasting, i.e. on downhill gradients, in order to maintain a constant, slow speed with high accuracy.
- the third switching element is actuated as a brake by temporarily closing this friction switching element.
- the third switching element can be actuated in such a way that it is operated in a slipping manner.
- the engine speed of a drive motor which is connected to an input shaft of the multi-stage automatic transmission, can be regulated in such a way that there is always an excess power in the multi-stage automatic transmission during slow travel.
- This excess power enables constant slow travel to be controlled by the third switching element used as a brake.
- the third switching element is closed at least temporarily and partially as a function of an output speed.
- the first and/or the second shifting element can also be designed as a friction shifting element and be operated in a slipping manner when driving slowly. This is particularly advantageous when the speed resulting from the required engine speed and the transmission ratio in the associated drive train in the starting gear stage is above the desired slow travel speed.
- a desired speed can also be set, which is below the speed resulting from the engine speed and the transmission ratio in the drive train.
- the output speed can be reduced while the input speed remains the same.
- driving speeds of up to 10 km/h are understood to be driving slowly.
- a constant speed is understood to mean, in particular, driving speeds that deviate from a target speed by less than 2 km/h, preferably by less than 1 km/h, over a period of time under consideration.
- constant slow travel is travel at a target speed of no more than 10 km/h, with the actual speed deviating from the target speed by no more than 2 km/h, preferably no more than 1 km/h.
- the speed when driving slowly can be below the crawling speed resulting from the idling speed of the drive motor and the gear ratio in the first forward gear or in reverse gear.
- a converter lock-up clutch on the hydrodynamic torque converter should preferably be open during constant slow travel.
- a fourth shifting element of the stepped automatic transmission designed as a friction shifting element can be actuated alternately or simultaneously with the third shifting element, depending on the output speed.
- a retarder can also be used as a braking element alternately or simultaneously with the third shifting element in order to prevent the third shifting element from overheating.
- temperature monitoring can be used, in which case the third switching element can then be relieved, for example by using the fourth switching element or the retarder, if a temperature threshold value of the switching element is exceeded.
- the invention also relates to a drive arrangement for driving a vehicle, which is suitable for carrying out the method described.
- a drive arrangement comprises a stepped automatic transmission, the stepped automatic transmission comprising an input shaft that can be connected to a drive motor, a hydrodynamic torque converter, a number of planetary gear sets, a number of friction shift elements for selecting different gear ratios, an output shaft, a speed sensor for detecting the output speed of the output shaft and a control device .
- the control device is set up in such a way that it can carry out the method described.
- the control device can include at least one processor, at least one data memory, software in the form of at least one computer program and at least one interface for communication.
- the control device can, for example, be in the form of a transmission control unit or be part of such a transmission control unit.
- the control device is connected in a signal-transmitting manner to the speed sensor for detecting the output speed.
- the control device can also receive information about the output speed from another control device of the vehicle via a suitable data connection.
- the control device is connected to the drive motor or to a control unit of the drive motor, in order to enable the motor speed of the drive motor to be regulated in such a way that there is excess power in the stepped automatic transmission during slow driving.
- the control device is also connected to actuating means for the shifting elements in the stepped automatic transmission and thus controls or regulates the closing and opening of the shifting elements depending on the output speed.
- control device can also be connected to at least one temperature sensor in order to measure the temperature of at least monitor slip operated third switching element. In this way, damage caused by overheating of the third switching element can be prevented by taking the measures described above to relieve the third switching element in good time.
- the control device or the transmission control unit has suitable communication interfaces for the connections mentioned, which can be set up both for wireless communication and for cable connections.
- the stepped automatic transmission is designed as a planetary gear and includes a first, a second and a third planetary gear set for setting different transmission ratios, and a fourth planetary gear set for reversing the direction of travel.
- the fourth planetary gear set is used as a turning gear set in order to provide two equivalent travel directions for the rail vehicle. This means that all gear ratios that can be adjusted using the first, second and third planetary gear sets in the stepped automatic transmission are available in two directions, so that the rail vehicle can be driven in both directions with the same speed ranges.
- the four planetary gear sets mentioned can in particular each be designed as negative planetary gear sets.
- a minus planetary gear set is a single planetary gear set with exactly one carrier on which the planetary gears are rotatably mounted, with exactly one sun gear and with exactly one ring gear, with the gearing of each of the planetary gears being geared both to the gearing of the sun gear and to the gearing ment of the flea wheel meshes, causing the flea wheel and sun gear to rotate in opposite directions of rotation when the sun gear rotates with the web stationary.
- a stepped automatic transmission in which the first, second, third and fourth planetary gear sets are each designed as negative planetary gear sets.
- the first switching element in such a stepped automatic transmission connects a drive shaft to the sun gear of the third planetary gear set
- the second switching element connects the ring gear of the third planetary gear set with a housing of the stepped automatic transmission
- the third switching element connects the ring gear of the second planetary gear set with the housing.
- the first, second and third shifting element are each designed as a friction shifting element.
- a friction shifting element can also be provided as the fourth shifting element, which connects the ring gear of the first planetary gear set to the housing.
- the present invention also includes a computer program product with a computer program that can be loaded into a memory unit of a control device of a vehicle in order to carry out all the steps of the method described when the computer program is executed in the control device. If the computer program in question is used on a computer or in a control device of the vehicle, the computer program produces the inventive technical effect described above.
- the computer program product proposed here comprises a sequence of commands, by means of which the drive arrangement is caused to carry out the method described, as a result of which the vehicle is driven at slow speed.
- Fig. 1 shows an embodiment of a drive assembly according to the invention in a schematic representation in a setting for driving in a first gear and th
- FIG. 2 shows the drive arrangement from FIG. 1 in a setting for constant slow travel.
- the drive arrangement 1 for driving a vehicle comprises a drive motor 2 and a stepped automatic transmission 3.
- the stepped automatic transmission 3 has an input shaft 4 which is connected or can be connected to the drive motor 2. This means that a motor output shaft of the drive motor 2 is connected to the input shaft 4 in a torque-transmitting manner.
- the stepped automatic transmission 3 also has a hydrodynamic torque converter 5 .
- An impeller of the torque converter 5 is connected to the input shaft 4 .
- a turbine wheel Torque converter 5 is connected to a drive shaft 6, which in turn is connected or ver bindable with individual elements of the planetary gear sets P1, P2, P3, P4.
- Each of the mentioned planetary gear sets P 1 , P2 , P3 , P4 has the three elements Son gear, planet carrier and ring gear.
- the planet carrier tarpaulins are rotatably mounted tennd whose teeth engage in the teeth of each parent to the sun gear and ring gear.
- the planetary gear sets P1, P2, P3, P4 are each designed as a negative planetary gear set.
- the fourth planetary gear set P4 which is arranged on the output side in the power flow, is provided as a reversing gear set for reversing the direction of rotation. It has stepped planetary gears, each with two teeth whose number of teeth is different and selected in such a way that the amount of translation in both directions of rotation is at least almost the same. In this way, the vehicle can be operated in two directions at the same speed levels.
- the shifting elements A, B, D, E, F assigned to the planetary gearsets P1, P2 and P3 are designed as friction shifting elements, while the shifting elements G and H assigned to the planetary gearset P4 are designed as positive-locking shifting elements.
- the torque converter 5, the planetary gear sets P1, P2, P3, P4 and the switching elements A, B, D, E, F, G, H are arranged in a housing 9 of the stepped automatic transmission 3, which can also be designed in several parts.
- shifting elements A, B, D, E, F By selectively closing and opening the shifting elements A, B, D, E, F, different gear ratios are set, while the driving direction is selected using the shifting elements G and H.
- the associated shifting elements G and H can be connected to an output shaft 7 either with the ring gear of the fourth planetary gear set P4 or with the planet carrier of the third planetary gear set P3.
- different translation stages can be selected using the switching elements, whereby a translation adapted to the respective driving situation between the input shaft 6 and the output shaft 7 can be set.
- a speed sensor 11 for detecting the output speed of the output shaft 7 is arranged in the area of the output shaft 7.
- the speed sensor 11 is connected to a control device 10 in order to transmit the signals relating to the output speed.
- the control device 10 which is set up to carry out the method described, is arranged in the form of a transmission control unit on the multi-stage automatic transmission 3.
- the control device 10 can also be arranged at a different location or can include components that are arranged at a different location.
- the drive shaft 6 is permanently connected to the son gear of the first planetary gear set P1.
- the drive shaft 6 can also be connected to the sun gear of the third planetary gear set P3 by the first shifting element A being closed.
- the ring gear of the first planetary gear set P1 can be connected to the housing 9 of the stepped automatic transmission BES 3 by means of the fourth switching element D.
- the ring gear of the second planetary gear set P2 and the planet carrier of the first planetary gear set P1 are permanently connected to each other.
- the ring gear of the second planetary gear set P2 and the planet carrier of the first planetary gear set P1 can be connected to the housing 9 by means of the third switching element E.
- the ring gear of the third planetary gear set P3 is permanently connected to the tarpaulin carrier of the second planetary gear set P2.
- the ring gear of the third planetary gear set P3 and the planet carrier of the second planetary gear set P2 can be connected to the housing 9 by means of the second switching element F.
- the planet carrier of the second planetary gear set P2 and the The ring gear of the third planetary gear set P3 is connected to the drive shaft 6 by means of the fifth shifting element B.
- the first gear so the starting gear is selected in the stepped automatic transmission 3, which is also provided for the constant low speed.
- the performance-leading elements are characterized by reinforced lines.
- the first switching element A and the second switching element F are closed in the first gear stage.
- the closed switching elements A and F can be seen in FIG. 1 by the fact that no air gaps can be seen between the laminations shown schematically.
- the switching element G is closed in the turning wheel set P4, which results in a direct through drive without reversing the direction of rotation.
- the converter lockup clutch 8 is also closed, so that the hydrodynamic part of the converter is ineffective.
- Fig. 2 shows the same drive assembly 1 as FIG. 1 with the same reference numerals for the same components. Only the switching position of the converter lockup clutch 8 and the third switching element E have changed. In order to achieve constant slow travel, the converter lockup clutch 8 was opened so that the hydrodynamic torque converter 5 becomes effective. Furthermore, the third switching element E is closed in FIG. 2 in order to represent a temporary braking by means of the third switching element E. This means that the third switching element E does not remain permanently closed during constant slow travel. Instead, the third switching element E is only temporarily and partially closed. It is therefore mainly operated in a slipping manner. The braking duration and braking strength with which the third switching element E is actuated depend on the output speed, which is detected by the speed sensor 11 on the output shaft 7 . reference sign
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Abstract
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021206767.0A DE102021206767B4 (de) | 2021-06-29 | 2021-06-29 | Verfahren zum Antreiben eines Fahrzeugs und Antriebsanordnung |
| PCT/EP2022/063040 WO2023274616A1 (de) | 2021-06-29 | 2022-05-13 | Verfahren zum antreiben eines fahrzeugs und antriebsanordnung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4363745A1 true EP4363745A1 (de) | 2024-05-08 |
Family
ID=82016455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22729157.2A Pending EP4363745A1 (de) | 2021-06-29 | 2022-05-13 | Verfahren zum antreiben eines fahrzeugs und antriebsanordnung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4363745A1 (de) |
| CN (1) | CN117545948A (de) |
| DE (1) | DE102021206767B4 (de) |
| WO (1) | WO2023274616A1 (de) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2320533B (en) * | 1994-02-23 | 1998-08-26 | Luk Getriebe Systeme Gmbh | Torque transfer system |
| US7556586B2 (en) * | 2004-07-28 | 2009-07-07 | Komatsu Ltd. | Shift control device and shift control method for vehicle |
| DE102008041887A1 (de) * | 2008-09-09 | 2010-03-11 | Zf Friedrichshafen Ag | Hybridantriebsstrang eines Kraftfahrzeugs |
| DE102009001799A1 (de) | 2009-03-24 | 2010-09-30 | Zf Friedrichshafen Ag | Verfahren zum kontrollierten Langsamfahren im Zugbetrieb für ein Kraftfahrzeug mit einem Stufenautomatgetriebe |
| DE102013218615A1 (de) * | 2013-09-17 | 2015-03-19 | Zf Friedrichshafen Ag | Lastschaltautomatgetriebe |
| DE102016208667A1 (de) * | 2016-05-19 | 2017-11-23 | Zf Friedrichshafen Ag | Getriebe für ein Kraftfahrzeug, sowie Antriebsstrang für ein Kraftfahrzeug |
| DE102017212744A1 (de) | 2017-07-25 | 2019-01-31 | Zf Friedrichshafen Ag | Antriebsanordnung |
| DE102018208380A1 (de) * | 2018-05-28 | 2019-11-28 | Zf Friedrichshafen Ag | Mehrstufengetriebe in Planetenbauweise für ein Fahrrad oder Pedelec |
| DE102018213561A1 (de) * | 2018-08-13 | 2020-02-13 | Zf Friedrichshafen Ag | Antriebsanordnung für ein Fahrzeug mit zwei gleichwertigen Fahrtrichtungen und Verfahren zum Betreiben eines solchen Fahrzeugs |
| DE102018220895A1 (de) | 2018-12-04 | 2020-06-04 | Zf Friedrichshafen Ag | Antriebsanordnung für ein Fahrzeug mit zwei gleichwertigen Fahrtrichtungen und Verfahren |
-
2021
- 2021-06-29 DE DE102021206767.0A patent/DE102021206767B4/de active Active
-
2022
- 2022-05-13 CN CN202280044702.2A patent/CN117545948A/zh active Pending
- 2022-05-13 WO PCT/EP2022/063040 patent/WO2023274616A1/de not_active Ceased
- 2022-05-13 EP EP22729157.2A patent/EP4363745A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN117545948A (zh) | 2024-02-09 |
| DE102021206767B4 (de) | 2023-01-26 |
| DE102021206767A1 (de) | 2022-12-29 |
| WO2023274616A1 (de) | 2023-01-05 |
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