WO2002095253A1 - Verfahren zum steuern und/oder regeln einer automatisierten kupplung und/oder eines automatisierten getriebes eines fahrzeuges - Google Patents
Verfahren zum steuern und/oder regeln einer automatisierten kupplung und/oder eines automatisierten getriebes eines fahrzeuges Download PDFInfo
- Publication number
- WO2002095253A1 WO2002095253A1 PCT/DE2002/001815 DE0201815W WO02095253A1 WO 2002095253 A1 WO2002095253 A1 WO 2002095253A1 DE 0201815 W DE0201815 W DE 0201815W WO 02095253 A1 WO02095253 A1 WO 02095253A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- torque
- creep
- engine
- speed
- vehicle
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 88
- 230000005540 biological transmission Effects 0.000 title claims abstract description 27
- 230000001276 controlling effect Effects 0.000 title claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 6
- 230000008878 coupling Effects 0.000 title abstract 2
- 238000010168 coupling process Methods 0.000 title abstract 2
- 238000005859 coupling reaction Methods 0.000 title abstract 2
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000011161 development Methods 0.000 description 17
- 230000009193 crawling Effects 0.000 description 14
- 230000001133 acceleration Effects 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
-
- 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
- B60W30/18063—Creeping
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/104—Clutch
- F16D2500/10406—Clutch position
- F16D2500/10412—Transmission line of a vehicle
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/108—Gear
- F16D2500/1081—Actuation type
- F16D2500/1083—Automated manual transmission
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/108—Gear
- F16D2500/1081—Actuation type
- F16D2500/1085—Automatic transmission
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/306—Signal inputs from the engine
- F16D2500/3065—Torque of the engine
- F16D2500/3066—Torque change rate of the engine
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/31—Signal inputs from the vehicle
- F16D2500/3102—Vehicle direction of travel, i.e. forward/reverse
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/312—External to the vehicle
- F16D2500/3125—Driving resistance, i.e. external factors having an influence in the traction force, e.g. road friction, air resistance, road slope
- F16D2500/3127—Road slope
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/316—Other signal inputs not covered by the groups above
- F16D2500/3166—Detection of an elapsed period of time
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/50—Problem to be solved by the control system
- F16D2500/502—Relating the clutch
- F16D2500/50206—Creep control
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/50—Problem to be solved by the control system
- F16D2500/508—Relating driving conditions
- F16D2500/50825—Hill climbing or descending
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/70—Details about the implementation of the control system
- F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
- F16D2500/70422—Clutch parameters
- F16D2500/70438—From the output shaft
- F16D2500/7044—Output shaft torque
Definitions
- the invention relates to a method for controlling and / or regulating an automated clutch and / or an automated transmission of a vehicle, in particular a motor vehicle, in which a creep strategy is provided for building up a creep torque.
- Automated clutches and automated transmissions from vehicle technology are well known, and methods for controlling and / or regulating them are also required.
- a creep strategy is also provided in order to implement a creep process in the vehicle.
- a creep torque is built up accordingly to move the vehicle.
- the creep torque is not sufficient to the vehicle z. B. to accelerate or move on a mountain during a crawl. This can be the case if a tactile point in the creep strategy is incorrectly too high.
- the vehicle may roll back on the mountain in a disadvantageous manner despite the build-up of a creeping moment. This should definitely be avoided in order to minimize the potential danger to the vehicle.
- a low-frequency drive train vibration is preferably generated when crawling downhill using the known method.
- These undesirable powertrain vibrations can e.g. B. arise from the fact that when crawling downhill the high drag torque in the engaged state leads to the deceleration of the vehicle to idle.
- the idling controller of the vehicle that then suddenly starts to accelerate the vehicle, so that the drive train of the vehicle can be set in motion.
- These vibrations can also occur in the known method if the idle controller of the engine control of the vehicle cannot keep the speed constant when creep torque is applied, so that the engine speed can drop very sharply and vibrations are generated as a result.
- the present invention is therefore based on the object of providing a method of the aforementioned type in which the creep strategy is modified in such a way that vibrations in the vehicle in particular are avoided.
- the creep strategy is modified such that the course of the creep torque and also the start of the creep strategy are optimally adapted to a creeping process of the vehicle.
- the creep strategy in the method according to the invention is influenced by at least one suitable motor and / or transmission size. This advantageously improves the creep behavior of the vehicle and also prevents vibrations in the vehicle, in particular in the drive train.
- An advantageous embodiment of the present invention can provide that the creep torque in the creep strategy is built up as a function of engine torque.
- the engine torque is preferably measured or registered at the beginning of the creeping process in order to build up the creeping torque in a suitable manner.
- the clutch torque is slowly built up to a predetermined point in time.
- the time can e.g. B. can be determined by the fact that the engine torque exceeds the nominal creep torque.
- the clutch torque can also be built up in a different way and also any other point in time can be selected in the method according to the invention.
- the creep mo ment and / or the engine torque are kept constant. It is of course also possible that the creep torque and / or the engine torque is only kept constant after a certain time interval. This time interval can e.g. B. be six seconds. Of course, other values for the time interval are also possible in the method according to the invention.
- a roll direction detection is integrated in the crawling strategy.
- the roll direction detection z. B. rolling back of the vehicle can be detected. It is conceivable that suitable sensors are provided for the roll direction detection.
- a development of the invention presented here can provide that the roll direction detection is carried out by observing the gradient of the transmission speed.
- suitable motor and / or transmission sizes can also be used in the method according to the invention in order to suitably influence the creep strategy.
- the transmission speed increases and is reduced again when the creep torque is applied or at least increases more slowly.
- the creep torque is suitably increased so that a desired creeping process is carried out on the vehicle.
- the above-mentioned course of the transmission speed can also exist if the crawling process is carried out on a flat surface and then the vehicle comes up a slope. In this case too, it is advantageous if the creep torque is increased accordingly in order to achieve a more comfortable creeping process using the method according to the invention.
- the known method can incorrectly select a touch point that is too low or the vehicle can be on a very steep slope during the crawling process.
- the clutch torque is reduced when the acceleration is too strong in order to further optimize the creep strategy with the method according to the invention.
- the creep strategy should ensure that the creep torque is not built up excessively.
- a further development of the present invention can provide that the creep torque is suitably slowly increased when a corresponding situation is recognized, so that the corresponding creep torque is advantageously available quickly and conveniently at the point in time at which an increase in the creep torque is desired , A so-called feedforward control for the creeping torque is thus provided in the method according to the invention.
- a predetermined time interval can also be allowed to elapse before the creep torque is reduced. It is thus possible in the method according to the invention that the creep torque is first reduced slowly and then more quickly. This safely accelerates the vehicle in the method according to the present invention.
- any function can be used to build up a higher creep torque. It is particularly advantageous to use a linear function to build up the creep torque. For example, an offset to the nominal creep torque can also be provided during assembly.
- the creep torque is built up as a function of the transmission speed and / or the gradient of the transmission speed.
- a function depending on the slip and / or the gradient of the slip can also be used for the construction. It is also conceivable that other suitable motor and / or transmission sizes are used to build up the creep torque.
- the excessive creep torque is limited at the top.
- This can e.g. B. be carried out by a constant or fixed limit.
- the limit value can also be specified by a variable value.
- this variable limit value can be dependent on the transmission speed reached and / or on the gradient of the transmission speed reached.
- this limit value depends on the slip.
- the limit value can also be dependent on the time interval in which the creep torque is built up.
- Another development of the present invention can provide that the creep torque is not increased when, for example, the driver's door is opened. Because when the driver's door is open, there is a risk that the vehicle will move unintentionally on its own. This is advantageously avoided in the method according to the invention.
- the creep torque is increased only as a function of the temperature of the clutch. For example, at If the limit temperature is reached, the load on the clutch can be reduced. As a result, the energy that is additionally applied in the clutch compared to normal creep does not wear the clutch faster.
- Another embodiment of the present invention can provide that the creep strategy is modified in the method according to the invention such that preferably a continuous transition of the effective engine torque from the full drag torque to the full idle torque is provided. In this way, drive train vibrations can be avoided in an advantageous manner, since the idle controller does not start abruptly above the idle speed, but rather a continuous transition of the engine torque curve is achieved.
- a so-called selective injection takes place for better adjustment of the engine torque.
- the injection is speed-dependent, for. B. every fourth, third or second work cycle. If the engine speed is again above the idle speed, z. B. be provided that the injection of the fuel is carried out again with each work cycle. This results in a relatively continuous profile of the engine torque in the method according to the invention.
- Another embodiment of the invention presented here can provide that a corresponding signal is sent by the engine control system of the vehicle when changing to the creep strategy.
- the engine control recognizes the request and can e.g. B. Increase the idle speed accordingly. This also advantageously increases the effective engine torque. Overall, this measure enables a stronger creeping of the vehicle during the creeping process in the method according to the invention.
- this signal is sent via a CAN bus, as a result of which the engine control is further optimized.
- the signal can also be transmitted in another way in the method according to the invention.
- a waiting loop can first be initiated in accordance with another development of the present invention.
- the creep torque in the method according to the invention is only built up on the clutch when the engine speed z. B. has reached a turning point. The engine then turns at idle and is therefore uncoupled from the rest of the drive train with the clutch open.
- the following formulaic relationship results for the motor torque: l M Y1 motor - f "i't motor * J J motor + ⁇ l M rl consumer
- M motor motor torque
- ⁇ slope of the speed curve
- J Mo moment of inertia of the motor
- M v ero ⁇ er consumer torque
- the maximum engine torque can be determined by evaluating the engine speed.
- the speed increase at time t-1 and time t is compared. It is possible that the time interval ⁇ t corresponds to approximately 10 ms.
- the limit value can be, for. B. be driven out via an application parameter in such a way that the clutch can already transmit a torque at the maximum torque at time t x .
- the acceleration torque of the engine at the time of the increase in idle speed is also advantageously used.
- the build-up of the creep torque thus begins from a higher level. On the one hand, this enables a faster build-up of the creep torque, since the idle controller does not first evaluate the resulting speed difference and may have to counteract it.
- there is the advantage that the idling speed only drops again when there is a certain creep torque and the vehicle is already in motion.
- the method according to the invention can preferably be used in vehicles with an electronic clutch management (EKM) and / or with an automated manual transmission (ASG).
- EKM electronic clutch management
- ASG automated manual transmission
- the method according to the invention can also be used in vehicles with a CVT transmission, in particular if the engine of the vehicle has direct injection. It is also conceivable to use so-called USG and GSG gearboxes.
- Figure 1 is a representation of the measured and the real transmission speed during a crawl on the mountain;
- Figure 2 shows the course of the real and measured transmission speed when the vehicle is on the mountain and is not accelerated enough with normal crawling;
- Figure 3 shows the engine torque curve in overrun during a creep
- Figure 4 shows two diagrams with the engine speed and the engine torque during a creep.
- FIG. 2 shows the courses of the real and the measured speed of the gearbox for the creeping processes 2A and 2B.
- the vehicle is on the mountain during these crawling processes and is not accelerated sufficiently quickly with a conventional crawling strategy. It can happen that the vehicle only rolls forward, as indicated by the course of FIG. 2A, or, as indicated by the course of 2B, initially rolls backwards somewhat. In both cases, it makes sense for the creep torque to be built up appropriately.
- the engine speed n Mot and the engine torque M OI are indicated during a creep process.
- the engine control sends a signal and increases the idling speed as well as the effective engine torque, so that the vehicle can crawl more strongly.
- the time of the maximum engine torque can be determined by evaluating the engine speed. The slope of the speed at time t-1 and time 1 is compared. If the difference value falls below a predetermined limit value, creep is initiated. This limit value should be selected by at least one application parameter such that the clutch already transmits a torque at the maximum engine torque (time t x ). The acceleration torque of the engine is therefore also used to increase the idle speed.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10292229T DE10292229D2 (de) | 2001-05-23 | 2002-05-21 | Verfahren zum Steuern und/oder Regeln einer automatisierten Kupplung und/oder eines automatisierten Getriebes eines Fahrzeuges |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10125263 | 2001-05-23 | ||
DE10125263.3 | 2001-05-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002095253A1 true WO2002095253A1 (de) | 2002-11-28 |
Family
ID=7685950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/001815 WO2002095253A1 (de) | 2001-05-23 | 2002-05-21 | Verfahren zum steuern und/oder regeln einer automatisierten kupplung und/oder eines automatisierten getriebes eines fahrzeuges |
Country Status (4)
Country | Link |
---|---|
DE (2) | DE10292229D2 (de) |
FR (1) | FR2825125B1 (de) |
IT (1) | ITMI20021105A1 (de) |
WO (1) | WO2002095253A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006042353A1 (de) * | 2006-09-08 | 2008-03-27 | Zf Friedrichshafen Ag | Verfahren zum Realisieren eines Kriech-Modus bei einem Fahrzeug, umfassend ein Getriebe mit einer Anfahrkupplung |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19733465A1 (de) * | 1996-08-20 | 1998-02-26 | Volkswagen Ag | Anordnung zur Steuerung einer automatisierten Kupplung |
DE19751225A1 (de) * | 1996-11-23 | 1998-05-28 | Luk Getriebe Systeme Gmbh | Vorrichtung zur Ansteuerung eines Drehmomentübertragungssystems |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19822695B4 (de) | 1998-05-20 | 2012-03-22 | Volkswagen Ag | Vorrichtung zur Unterdrückung eines Antriebsmomentes auf eine Antriebsvorrichtung eines Fahrzeuges |
-
2002
- 2002-05-21 DE DE10292229T patent/DE10292229D2/de not_active Expired - Fee Related
- 2002-05-21 DE DE10222342.4A patent/DE10222342B4/de not_active Expired - Fee Related
- 2002-05-21 WO PCT/DE2002/001815 patent/WO2002095253A1/de not_active Application Discontinuation
- 2002-05-22 IT IT2002MI001105A patent/ITMI20021105A1/it unknown
- 2002-05-22 FR FR0206211A patent/FR2825125B1/fr not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19733465A1 (de) * | 1996-08-20 | 1998-02-26 | Volkswagen Ag | Anordnung zur Steuerung einer automatisierten Kupplung |
DE19751225A1 (de) * | 1996-11-23 | 1998-05-28 | Luk Getriebe Systeme Gmbh | Vorrichtung zur Ansteuerung eines Drehmomentübertragungssystems |
Also Published As
Publication number | Publication date |
---|---|
FR2825125B1 (fr) | 2007-04-13 |
FR2825125A1 (fr) | 2002-11-29 |
ITMI20021105A0 (it) | 2002-05-22 |
DE10222342A1 (de) | 2003-01-23 |
DE10222342B4 (de) | 2017-03-30 |
DE10292229D2 (de) | 2004-04-29 |
ITMI20021105A1 (it) | 2003-11-24 |
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