EP4377591A1 - Verfahren zum steuern eines antriebssystems eines kraftfahrzeugs sowie vorrichtung zur durchführung des verfahrens - Google Patents
Verfahren zum steuern eines antriebssystems eines kraftfahrzeugs sowie vorrichtung zur durchführung des verfahrensInfo
- Publication number
- EP4377591A1 EP4377591A1 EP22730569.5A EP22730569A EP4377591A1 EP 4377591 A1 EP4377591 A1 EP 4377591A1 EP 22730569 A EP22730569 A EP 22730569A EP 4377591 A1 EP4377591 A1 EP 4377591A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive motor
- torque converter
- speed
- automatic transmission
- input shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
- B60W10/024—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches including control of torque converters
- B60W10/026—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches including control of torque converters of lock-up clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18072—Coasting
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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
- F16H61/14—Control of torque converter lock-up clutches
- F16H61/143—Control of torque converter lock-up clutches using electric control means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
- B60W2510/0647—Coasting condition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
- B60W2510/0652—Speed change rate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/1015—Input shaft speed, e.g. turbine speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/02—Clutches
- B60W2710/021—Clutch engagement state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2300/00—Purposes or special features of road vehicle drive control systems
- B60Y2300/70—Control of gearings
- B60Y2300/77—Torque reversal, e.g. avoid clunks when changing between driving and coasting
-
- 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
- F16H2059/366—Engine or motor speed
-
- 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
- F16H2059/385—Turbine speed
-
- 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
- F16H59/46—Inputs being a function of speed dependent on a comparison between speeds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- 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
- F16H59/70—Inputs being a function of gearing status dependent on the ratio established
Definitions
- the present invention relates to a method for controlling a drive system of a motor vehicle and a device for carrying out the method
- a state of the torque converter can vary between a closed state, in which the power of the drive motor is transmitted to an input shaft of the automatic transmission by a frictional connection within the torque converter, and an open state, in which the power of the drive motor is transmitted by hydrodynamic power transmission within the torque converter to the input shaft of the automatic transmission.
- An object of an embodiment of the present invention is to improve a motor vehicle or its operation.
- a method for controlling ei nes drive system of a motor vehicle, in particular a passenger car gens, with a drive motor, a hydrodynamic torque converter, which is connected to the drive motor, and an automatic transmission between the torque converter and a drive shaft of the motor vehicle is connected, with a state of the torque converter between a closed state, in which the power of the drive motor is transmitted to an input shaft of the automatic transmission by a frictional connection within the torque converter, and an open state, in which the power of the drive motor is transmitted to the input shaft of the automatic transmission by hydrodynamic power transmission within the torque converter, switchable, the following steps: a) detecting a speed of the drive motor, b) detecting a speed of the input shaft of the automatic transmission, c) determining whether the RPM of the drive motor has decreased continuously or not within a predetermined past period of time, and d) outputting a control signal to the drive motor in order to set the RPM of the drive motor in such a way that it is equal to or greater than
- the flow of power from the drive engine to the wheels is due to the components torque converter, automatic transmission and drive shaft, in particular several drive shafts, with multiple positive connections that are subject to play tied together.
- the first flanks of the positive-locking connections are in contact with one another in a first state.
- the relative position changes from the second state to the first state.
- This change in relative position is jerky and results in a shock in the drive system, particularly a jerky acceleration of the motor vehicle, which is perceptible to the driver.
- the speed of the drive motor and thus of the input shaft of the torque converter is set in such a way that it is equal to or greater than the speed of the input shaft of the automatic transmission, the shock in the drive system caused by the jerky change in the relative position of the positive connections would be gently prevented.
- the method further includes the steps of: e) determining whether the torque converter is in the open state or the closed state, and f) outputting a control signal to the torque converter to determine the state of the torque converter to the open state when the torque converter is in the closed state and the speed of the engine has continuously decreased within the past predetermined period of time.
- step d) the control signal is output to the drive motor in order to adjust the speed of the drive motor in such a way that it is equal to or greater than the speed of the input shaft of the automatic transmission after the control signal has been output to the torque converter in step f).
- step f) the speed of the drive motor has decreased continuously within the predetermined past period of time, and it has been determined by performing step e) a number of times that the torque converter has been switched to the open state.
- the torque converter is in the open state when the speed of the drive motor is set such that it is equal to or greater than the speed of the input shaft of the automatic transmission.
- the method also has the following step: g) determining a currently engaged gear of the automatic transmission, wherein in step f) the control signal is output to the torque converter in order to switch the state of the torque converter to the open state when the Torque converter is in the closed state, the currently engaged gear is lower than an immediately prior engaged gear, and the speed of the drive motor has continuously decreased within the past predetermined period.
- the engaged gear of the automatic transmission can be determined, for example, by a ratio of a speed of the drive shaft to the speed of the input shaft of the automatic transmission.
- the shock in the drive system which would be caused by the sudden change in the relative position of the positive connections after a downshift by the automatic transmission, can advantageously be prevented.
- the method also has the following step: h) detecting a position of an accelerator pedal and/or a brake pedal of the motor vehicle, with the control signal being output to the drive motor in step d) if the torque converter is in the open state , the speed of the drive motor has decreased continuously within the predetermined past time period, and the accelerator pedal has not been depressed and/or the brake pedal has been depressed.
- the method also has the following step: i) determining a speed of the drive motor to be specified based on the speed of the input shaft of the automatic transmission in such a way that the speed of the drive motor to be specified is between 1% and 5% greater than the speed of the input shaft of the Automatic transmission is, wherein in step d) the control signal is output to the drive motor based on the speed of the drive motor to be specified in order to set the speed of the drive motor in such a way that it is between 1% and 5% greater than the speed of the input shaft of the Automatic transmission is when the torque converter is in the open state and the speed of the drive motor has decreased continuously within the specified time period to the past.
- this can ensure that even if there is an error in detecting the speed of the drive motor and/or if there is an error in detecting the speed of the input shaft of the automatic transmission, the speed of the drive motor is equal to or greater than the speed of the input shaft of the car automatic transmission is.
- a device for controlling a drive system of a motor vehicle in particular a passenger car, with a drive motor, a hydrodynamic torque converter, which is connected to the drive motor, and an automatic transmission, which is between the torque converter and a drive shaft of the motor vehicle is switched, with a state of the torque converter between a closed state, in which the power of the drive motor is transmitted to an input shaft of the automatic transmission by a frictional connection within the torque converter, and an open state, in which the power of the drive motor is transmitted by hydrodynamic Power transmission within the torque converter is transmitted to the input shaft of the automatic transmission, is switchable, set up for carrying out a method described above and/or has: a) means for detecting a speed of the drive bsmotors, b) means for detecting a speed of the input shaft of the automatic transmission bes, c) means for determining whether the speed of the drive motor has decreased continuously within a predetermined past period of time or not, and d) means for outputting a control signal to the
- the speed of the drive motor and thus of the input shaft of the torque converter is set in such a way that it is equal to or greater than the speed of the input shaft of the automatic transmission, the shock in the drive system caused by the jerky change in the relative position of the positive connections would be gently prevented.
- the device further comprises: e) means for determining whether the torque converter is in the open state or in the closed state, and f) means for outputting a control signal to the torque converter to change the state of the torque converter to the switch to the open state when the torque converter is in the closed state and the rotational speed of the drive motor has continuously decreased within the predetermined past period of time.
- the means for outputting the control signal to the drive motor is set up to output the control signal to the drive motor in order to set the speed of the drive motor in such a way that it is equal to or greater than that
- the speed of the input shaft of the automatic transmission is, after the means for outputting the control signal to the torque converter outputs the control signal to the torque converter to switch the state of the torque converter to the open state, the speed of the driving motor has continuously decreased within the past predetermined period , and it is determined that the torque converter has switched to the open state using the means for determining whether the torque converter is in the open state or in the closed state.
- the torque converter is in the open state when the speed of the drive motor is set such that it is equal to or greater than the speed of the input shaft of the automatic transmission.
- the device also has: g) means for determining a currently engaged gear of the automatic transmission, the means for outputting the control signal to the torque converter being set up to output the control signal to the torque converter in order to switch the state of the torque converter to the switch to the open state when the torque converter is in the closed state, the currently engaged gear is lower than a gear engaged immediately before, and the rotational speed of the prime mover has continuously decreased within the predetermined past period of time.
- the engaged gear of the automatic transmission can be determined, for example, by a ratio of a speed of the drive shaft to the speed of the input shaft of the automatic transmission.
- the shock in the drive system which would be caused by the sudden change in the relative position of the positive connections after a downshift by the automatic transmission, can advantageously be prevented
- the device also has: h) means for detecting a position of an accelerator pedal and/or a brake pedal of the motor vehicle, the means for outputting the control signal to the drive motor in order to adjust the speed of the drive motor in such a way that it is equal or greater than the speed of the input shaft of the automatic transmission, is adapted to output the control signal to the drive motor when the torque converter is in the open state, the speed of the drive motor has decreased continuously within the past predetermined period, and the accelerator pedal was not pressed and/or the brake pedal was pressed.
- the device also has: i) means for determining a speed of the drive motor to be specified, which is set up to determine the speed of the drive motor to be specified based on the speed of the input shaft of the automatic transmission in such a way that the speed of the drive motor to be specified is between 1 % and 5% greater than the speed of the input shaft of the automatic transmission, the means for outputting the control signal to the drive motor being set up to output a control signal to the drive motor based on the speed of the drive motor to be specified, in order to set the speed of the drive motor in such a way that it is between 1 % and 5 % greater than the speed of the input shaft of the automatic transmission when the torque converter is in the open state and the speed of the prime mover has continuously decreased within the past predetermined period.
- the speed of the drive motor is equal to or greater than the speed of the input shaft of the automatic transmission.
- the means for determining the speed of the drive motor to be specified is contained in a motor controller for the drive motor or in an external control device, preferably a control device for the automatic transmission, with the external control device being set up to transmit the speed of the drive motor to be specified to the Output engine control, in particular via a CAN bus.
- the torque converter has a turbine wheel that is non-rotatably connected to the input shaft of the automatic transmission, and an impeller that is non-rotatably connected to a crankshaft of the drive motor, with the speed of the input shaft of the automatic transmission corresponding to a speed of the turbine wheel.
- a motor vehicle in particular a passenger car, has a drive system with a drive motor, a hydrodynamic torque converter, which is connected to the drive motor, and an automatic transmission, which is connected between the torque converter and a drive shaft of the motor vehicle, wherein a state of the torque converter between a closed state, in which the power of the drive engine is transmitted to an input shaft of the automatic transmission by frictional engagement within the torque converter, and an open state, in which the power of the drive engine is transmitted by hydrodynamic power transmission within the torque converter the input shaft of the automatic transmission is transmitted, is switchable, and a device for controlling a drive system of an automobile as described above.
- a means within the meaning of the present invention can be designed as hardware and/or software, in particular a processing unit (CPU) and/or a microprocessor unit, preferably digital, which is preferably connected to a memory and/or bus system for data or signals. or have one or more programs or program modules.
- the CPU can be designed to process commands that are implemented as a program stored in a memory system, to detect input signals from a data bus and/or to emit output signals to a data bus.
- a storage system can have one or more, in particular different, storage media, in particular optical, magnetic, solid-state and/or other non-volatile media.
- a computer program product can have, in particular, a storage medium, in particular a non-volatile storage medium, for storing a program or with a program stored thereon, with the execution of this program causing a system or a controller, in particular a computer, to to carry out a method described here or one or more of its steps.
- one or more, in particular all, steps of the method are carried out completely or partially automatically, in particular by the device or its means.
- FIG. 1 shows a motor vehicle according to an embodiment of the present inventions
- Fig. 2 shows the drive system illustrated in Fig. 1 Motor vehicle with the device for controlling the drive system according to an embodiment of the present invention
- FIG. 3 shows a hydrodynamic torque converter shown in FIG. 2 according to an embodiment in an exploded view
- Fig. 4 is a flowchart to illustrate a method for
- FIG. 5 shows a diagram in which a time profile of parameters of a drive system is shown according to one embodiment.
- the motor vehicle 300 for example a passenger car, has a device 100 for controlling a drive system 200, an accelerator pedal 301, a brake pedal 302 and a gear selection device 303.
- Fig. 2 shows the drive system 200 illustrated in Fig. 1 together with the device 100 for controlling the drive system 200.
- the drive system 200 has a drive engine 10, a torque converter 20, in particular a hydrodynamic torque converter 20, an automatic transmission 30 and a drive shaft 40 for driving wheels of the motor vehicle, not shown.
- an output shaft of the engine 10 is coupled to the torque converter 20, as illustrated by the arrow P2
- an output shaft of the torque converter 20 is coupled to an input shaft of the automatic transmission 30, and is as illustrated by the Arrow P3 illustrates an output shaft of the automatic transmission 30 coupled to a drive shaft 40 for driving wheels of the motor vehicle 300, not shown.
- the device 100 has a control unit 110 which is connected to the torque converter 20 and the automatic transmission 30 in order to control the torque converter 20 and the automatic transmission 30 and to transmit data relating to operating states of the torque converter 20 and the automatic transmission 30, for example a rotational speed of the input shaft of the Automatic transmission 30 to retrieve.
- Device 100 is also connected via a bus system (not shown), for example a CAN (Controller Area Network) system to other control devices (not shown) and sensors of motor vehicle 300, in order to obtain information from this information about a position of accelerator pedal 301 of motor vehicle 300 a position of the brake pedal 302 of the motor vehicle 300, via a position of the gear selection device 303 for the automatic transmission 30 and via a speed of the drive motor 10, and to send a control signal to the drive motor 10 in order to set the speed of the drive motor 10.
- a bus system for example a CAN (Controller Area Network) system to other control devices (not shown) and sensors of motor vehicle 300, in order to obtain information from this information about a position of accelerator pedal 301 of motor vehicle 300 a position of the brake pedal 302 of the motor vehicle 300, via a position of the gear selection device 303 for the automatic transmission 30 and via a speed of the drive motor 10, and to send a control signal to the drive motor 10 in order to set the speed of the drive motor 10.
- a bus system for example
- a state of torque converter 20 is selected by means of a corresponding control signal from control unit 110 between a closed state, in which the power of drive motor 10 is transmitted to the input shaft of automatic transmission 30 by a frictional connection within torque converter 20, and a state in which the power of the drive motor 10 is transmitted to the input shaft of the automatic transmission 30 by hydrodynamic power transmission within the torque converter 20, switchable.
- the control unit 110 is further set up to detect whether the torque converter 20 is in the closed state or the open state.
- FIG. 3 shows the hydrodynamic torque converter 20 shown in FIG. 2 according to an embodiment in an exploded view.
- the torque converter 20 has a front cover 21, the outside of which faces the drive motor 10, a turbine wheel 22, which is non-rotatably coupled to the input shaft of the automatic transmission 30, an impeller 23, which is connected to the output shaft or crankshaft of the drive motor 10 and the front cover 21 is rotatably coupled, a stator 24 with freewheel between the turbine wheel
- a lockup clutch 25 provided between the cover 21 and the turbine 22, and in a coupled state, that is, in the closed state of the torque converter 20, the turbine 22 and the impeller 23 by a friction connection with each other, while in a non-clutch state of the lockup clutch 25, i.e. in the open state of the torque converter 20, a coupling of the rotation of the turbine wheel 22 and the pump wheel 23 via a hydrodynamic power transmission from the pump wheel 23 on the turbine wheel 22 takes place.
- FIG. 4 shows a flowchart to illustrate a method for controlling a drive system of a motor vehicle
- FIG. 5 shows a diagram in which a time profile of parameters of a drive system is shown according to an embodiment when the method illustrated in FIG. 4 is carried out.
- Fig. 5 there are in particular time courses of the speed of the motor vehicle 300 (curve 51), the speed of the drive motor 10 (curve 52), the speed of the turbine wheel 22 (curve 53), a specific (estimated) engaged gear (curve 54) of the Automatic transmission 30, and a gear to be engaged (curve 55) of the automatic transmission 30 shown.
- the method is for controlling the drive system 200 of the motor vehicle 300 with the drive engine 10, the hydrodynamic torque converter 20, which is connected to the drive motor 10, and the automatic transmission 30, which is connected between the torque converter 20 and the drive shaft of the motor vehicle 300, provided the state of the torque converter 20 between the closed state in which the power of the drive motor 10 is transmitted to the input shaft of the automatic transmission 30 by a frictional connection within the torque converter 20, and an open state in which the power of the drive motor 10 is transmitted through hydrodynamic power transmission within the torque converter 20 is transmitted to the input shaft of the automatic transmission 30, is switchable provided.
- step S10 the rotational speed 52 of the drive motor 10 is detected by the control unit 110 .
- step S20 the rotational speed of the input shaft of the automatic transmission 30, that is to say in particular the rotational speed 53 of the turbine wheel 22, is detected by means of the control unit 110.
- step S30 the control unit 110 determines whether or not the rotational speed 51 of the drive motor 10 has continuously decreased within a predetermined past period of time.
- step S40 it is determined by the control unit 110 whether the torque converter 20 is in the open state or in the closed state.
- step S50 at time t2 after the automatic transmission 30 shifts down one gear just before time t1, a control signal is output to the torque converter 20 by the control unit 110 to switch the state of the torque converter 20 to the open state because the Torque converter 20 is in the closed state and the speed 52 of the prime mover 10 has continuously decreased within the predetermined past time period.
- step S60 the control unit 110 turns on Control signal, which has information about a target speed 56 of the drive motor 10, is output to the drive motor 10 in order to set the speed of the drive motor 10 such that it is equal to or greater than the speed of the input shaft of the automatic transmission 30 or of the turbine wheel 22.
- the resulting speed of the drive motor 10, which is shown in Fig. 5 using the curve 52" is now higher than the speed 53 of the turbine wheel 22 over the entire course of time.
- the method can additionally have a step S70, in which a currently engaged gear (curve 54) of the automatic transmission 30 is determined by means of the control unit 110, and in step S50 the control signal is output to the torque converter 20 in order to determine the state of the torque converter 20 to the open state when the torque converter 20 is in the closed state, the currently engaged gear is lower than an engaged gear immediately before, and the rotational speed of the prime mover 10 has continuously decreased within the past predetermined period.
- a currently engaged gear (curve 54) of the automatic transmission 30 is determined by means of the control unit 110, and in step S50 the control signal is output to the torque converter 20 in order to determine the state of the torque converter 20 to the open state when the torque converter 20 is in the closed state, the currently engaged gear is lower than an engaged gear immediately before, and the rotational speed of the prime mover 10 has continuously decreased within the past predetermined period.
- the method can also have a step S80, in which a position of accelerator pedal 301 and/or brake pedal 302 of motor vehicle 300 is detected by means of control unit 110, and in step S50 the control signal is output to drive motor 10 if the torque converter LER 20 is in the open state, the speed of the drive motor 10 has continuously decreased within the past predetermined period of time, and the accelerator pedal 301 has not been operated and/or the brake pedal 302 has been operated.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021208159.2A DE102021208159A1 (de) | 2021-07-28 | 2021-07-28 | Verfahren zum Steuern eines Antriebssystems eines Kraftfahrzeugs sowie Vorrichtung zur Durchführung des Verfahrens |
| PCT/EP2022/064873 WO2023006279A1 (de) | 2021-07-28 | 2022-06-01 | Verfahren zum steuern eines antriebssystems eines kraftfahrzeugs sowie vorrichtung zur durchführung des verfahrens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4377591A1 true EP4377591A1 (de) | 2024-06-05 |
Family
ID=82058394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22730569.5A Withdrawn EP4377591A1 (de) | 2021-07-28 | 2022-06-01 | Verfahren zum steuern eines antriebssystems eines kraftfahrzeugs sowie vorrichtung zur durchführung des verfahrens |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4377591A1 (de) |
| DE (1) | DE102021208159A1 (de) |
| WO (1) | WO2023006279A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4938102A (en) * | 1988-04-23 | 1990-07-03 | Chrysler Motors Corporation | Method of adaptively scheduling a shift for an electronic automatic transmission system |
| DE102017223274A1 (de) | 2017-12-19 | 2019-06-19 | Zf Friedrichshafen Ag | Verfahren zum Betreiben eines Antriebsstrangs eines Kraftfahrzeugs |
| JP2020045801A (ja) * | 2018-09-18 | 2020-03-26 | トヨタ自動車株式会社 | 車両の制御装置 |
-
2021
- 2021-07-28 DE DE102021208159.2A patent/DE102021208159A1/de active Pending
-
2022
- 2022-06-01 WO PCT/EP2022/064873 patent/WO2023006279A1/de not_active Ceased
- 2022-06-01 EP EP22730569.5A patent/EP4377591A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021208159A1 (de) | 2023-02-02 |
| WO2023006279A1 (de) | 2023-02-02 |
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