DE19932755A1 - Control device - Google Patents

Abstract

The invention relates to a control device which is used to control a device arranged in the drive train of a motor vehicle, especially a coupling and/or transmission. According to the invention, a control is carried out to determine, for instance, whether the temperature of the cooling water is higher than a predetermined temperature limit (step 306). If the temperature of the cooling water is higher than said limit, a characteristic value of the device (for instance, the characteristic curve of shifting in step 308 and/or the shifting process of a coupling device 3) is changed.

Description

The invention relates to a control device which ins particular can be used in a motor vehicle Method for operating such and a motor vehicle.

Control devices for operating a motor vehicle or to operate the internal combustion engine or a clutch or a transmission of a motor vehicle are already known.

A control device is known which signals an automated manual transmission to operate it outside that can. The signals are in accordance with predetermined Fahrmo di or driving programs broadcast.

It is also a control device for controlling a known electronically controlled clutch, in which according to a predetermined characteristic opens the clutch or is closed or partially closed, so that this slips.

These known control devices have already been on Market proven.

However, it has also been observed that this control is directions facilities, such as an internal combustion engine or Gear device or a clutch device, such have controlled that functional impairments on this one directions were determined.  

The invention is therefore based on the object of a tax rungseinrichtung, a method for operating such how to create a motor vehicle through which the Betriebsi safety of a motor vehicle is improved, which costs can be produced inexpensively and in a structurally simple manner and which is a customized actuation of a motor vehicle stuff or its components.

The object is achieved by a control device according to Claim 1.

Use according to the invention is the subject of the claim 33.

A motor vehicle according to the invention is the subject of the To Proverbs 34.

A method according to the invention is the subject of claim 35 or claim 36.

Preferred developments of the invention are the subject of Subclaims.

According to the invention, a control device for control proposed at least one facility, which at least partially arranged in the drive train of a motor vehicle can be.

The device, which is at least partially in the drive train a motor vehicle can be arranged is in the sense of present invention, in particular a drive device and / or a clutch device and / or a transmission direction of a motor vehicle.  

A drive device in the sense of the present invention is in particular an engine, an internal combustion engine or the same.

A coupling device in the sense of the present invention is, in particular, a facility that operates in different Switch positions a torque of a first shaft on a second wave may or may not transmit and possibly in at least a third switching position can carry. The clutch device can be used as a friction clutch or as a starting clutch or as a reversing set clutch or as a Ma magnetic powder clutch or as a converter lock-up clutch or the like. In particular is a clutch device as an electronically controlled coupling device trained in which switching between different Switching positions of the clutch device electronically controlled is executed.

An electronically controlled clutch device is in particular a coupling device, which the applicant under the designation "electronic clutch management" (EKM) be is written or offered.

A transmission device in the sense of the present invention is, in particular, a facility that has levels or levels can be switched to different switching positions can in which they have a different gear ratio generated between two waves. The gear device can be used as Multi-speed gearbox or as conical disc Belt transmission or the like may be formed. Gear unit switching operations between different Switching stages can in particular be automatic or manual or semi-automatic or automated with additional intervention possibility to be carried out by hand. When switching from one  a first switching position in a second switching position Traction interruption may or may not exist.

The transmission device is in particular an automatic transmission or designed as an automated manual transmission.

An automatic transmission in the sense of the present invention in particular a transmission device in which Schaltvor gears can be controlled automatically without interrupting traction can and which in particular has a planetary gear.

Under an automated manual transmission in the sense of the present The present invention is in particular a gear device understand when switching operations are automated with traction break can be controlled. The automated switching gear can at least one electric motor for actuating Have switching operations.

The term shift stage or gear stage is in the sense of the present ing invention in particular as a switching position to ver stand at a predetermined gear ratio device is switched, these terms both on a continuously variable transmission device like on a stepped one Obtain gear device.

The control device can be operated according to a predetermined operation The output characteristics which they apply to can transmit at least one of the facilities which in the Drive train of the motor vehicle are arranged. This signa le can cause this facility in different Operating positions is moved. In particular, a dome who opened the device further or closed it more the or a gear device in different Gangstu be switched.  

The control device is under predetermined conditions ten with at least one temperature determination device in Connection or in signal connection.

For the purposes of this invention is a connection between two Facilities between which signals can be transmitted NEN, in particular to understand that the associated facilities gen are separated from each other or that one of these Facilities integral part of the other facility is. The signal transmission can in particular be touch loose or run over cables or the like. That about carried signal in the sense of this invention in particular ana loges or a discrete or a digital or a pulswei modulated signal.

The temperature determination device can be the temperature of a Determine institution and / or a medium and / or for a Establishment or the medium create an energy balance.

The temperature is determined in the context of this energy balance tion device prefers energy, in particular ther mix energy that is currently in the facility or Medium is located.

This energy, or this thermal energy, which in the Institution or the medium is given in the sense of this Invention also referred to as energy input.

The facility whose temperature is being determined or for which an energy balance is drawn up in the sense of the Er invention in particular the internal combustion engine of a motor vehicle stuff or a piston or cylinder of such a burning Engine or an electric motor of a coupling device  or a gear device or a gear device or a coupling device or the like.

The medium whose temperature can be determined or for which energy balance can be created is in particular the cooling water of a cooling water circuit of a power vehicle or the oil of an oil circuit of a motor vehicle.

The temperature determination device and / or the control device can be based on the temperature it determines has, in the sense of this invention, generally as temperature records, assess whether the facility, its temperature was determined, has warmed or has not warmed. In ent speaking, the temperature determining device can Use the energy balance to determine or assess whether that is Medium or device for which the energy balance is based has been heated, or has not warmed.

It is also preferred that an energy balance or a tempera door determination made for a medium or a facility is used to indirectly determine whether a has warmed up another device or another medium or has not warmed up.

It is particularly preferred that the temperature of the cooling water is determined to determine whether the engine has warmed up or has not warmed.

The temperature detection device can send a signal to the Communicate control device which of the controls direction the temperature or the energy input in a prep agreed facility or in a predetermined medium.

The control device generates output signals according to a Cooling characteristics, which they correspond to those in the drive train  Arranged device communicates when the temperature is determined lungseinrichtung indicates that the temperature at a vorbe agreed place, for example at a predetermined point the facility whose temperature has been determined is greater than is a predetermined temperature limit and / or the energy carry to a predetermined facility or to a predetermined one Medium is greater than a predetermined energy limit.

In particular, the control device generates the output signals according to a cooling characteristic depending the temperature and / or the energy input.

The cooling characteristic can cause the actuation characteristic is modified or instead of the actuation supply characteristic can be used.

The cooling characteristic in particular causes a Characteristic value of the facility, which is at least partially in the An Powertrain of the motor vehicle can be arranged or a Characteristic value of a device, which at least partially with this interacts in the drive train, is changed. This characteristic value is changed in particular in this way that the device, its temperature or energy entry was determined, or the medium whose temperature or energy input was determined, cools down or can cool down or at least not warmed.

According to a preferred embodiment of the invention, the Control device generate output signals which cause ken that the clutch device in different switching positions is switched, the coupling device ins switched in particular into at least a first switching position can be in which the clutch device does not have a moment can transmit, and in at least a second switching position  can be switched in which the coupling device in is essentially closed and a Mo introduced into this ment can be completely transferred. In this second clutch position, the coupling device in particular a torque generated by the drive device is complete dig transmitted.

Preferably, the coupling device can also be in a third switching position are switched, in which the clutch lungseinrichtung a substantially small moment transmitted can, which is in particular a creeping moment.

Especially when the drive device generates a moment, that is larger than that which can be transmitted by the coupling device The moment is, the clutch device slips.

The invention is particularly advantageous in that it is can avoid a force in predetermined facilities vehicle, such as an internal combustion engine or a transmission direction or a coupling device, temperatures occur ten, the function of these elements or the motor vehicle can impair or lead to their destruction. In addition, can be avoided by the invention that temperature-related material expansion circuits imprecise be carried out.

According to a preferred embodiment of the invention, the Gear device on a gear lever or the like, which manually ge in different gear lever positions can be switched. The out of the control device The output signals sent are considered in particular generated this shift lever position.  

The shift lever can preferably be in the shift lever positions "Roll-away protection (P)" and / or "Reversing (R)" and / or "Neutral position" (N) "and / or" Forward driving (D) "and / or "Manual shift possible (M)" and / or "Steptronic higher Gear (+) "and / or" Steptronic lower gear (-) "and / or "Sport operation" and / or "Economy operation" and / or "Winter operation" can be switched.

Switch position "P" can be in particular when parking a Vehicle with the control device according to the invention tet and in particular causes a predetermined Gear stage, like the first gear, is engaged. The switching stage In particular, "R" enables a vehicle to be controlled device can drive backwards. The switch position "N" be acts in particular that the gear device in a new tralposition or a neutral gear is switched. The Shift lever position "D" in particular causes a vehicle operated with control device in the forward gear, wherein this operation is preferably carried out in an automated manner. The shift lever position "M" in particular causes that Shift lever is in a position from which a height manually higher or lower gear can be engaged. To the Shifting a higher gear is in particular the switching position provided "+", and for shifting into a lower gear step the switch position "-". The switch position "Sport operation" in particular causes the control device output generates signals that cause a motor vehicle with Control device is operated in a sporty manner. In particular a motor vehicle is operated sportily when it is high-revving is operated. This is especially true at high speeds shifted into a next higher gear. The gear lever position "Economy mode" causes in particular that a motor vehicle operated with fuel-saving control device becomes. This is especially true at lower speeds  len switched to a next higher gear. The shift levers position "winter operation" causes in particular that the force vehicle is operated adapted to lower temperatures.

Especially in place of the gear lever "sport mode" and / or "economy mode" and / or "winter mode" can also separate switches may be provided.

It is particularly preferred that in the "D" mode or in the Gear lever position "D" the motor vehicle automatically in sports operation or in economy mode. Before the control device generates the output signals le according to a sport characteristic or according to an economy Characteristic. What characteristic the control device to generate their output signals depends in particular right from the actuation of a fuel metering device. A motor vehicle is preferably operated in sport mode if the fuel metering device, such as the accelerator pedal, is often strong is actuated while the control device is its output signals generated according to an economy characteristic, if fixed is placed that the fuel metering device frequently is operated only slightly.

According to a preferred embodiment of the invention, the Temperature determination device an evaluation device and / or a computing device and / or a storage device device and / or a sensor device.

The sensor device is in particular a temperature sensor device. Are preferred in the storage device and / or in the control device temperature or Bela Performance models implemented, which are used to determine the tempera structures or the energy balance can be used.  

Predefined maps are preferred in the memory device the or characteristic curves or characteristic values that are used for the determination development of the energy input into a predetermined facility or the temperature of a predetermined device can be used can.

According to a particularly preferred embodiment of the invention can the control device or the temperature detection device for calculating the temperature or energy in a predetermined facility or a predetermined Use medium maps or characteristic curves or characteristic values. These parameters can, in particular, be the operating parameters of these Institution or another institution, which of the Motor vehicle is included.

An operating characteristic is in the sense of the present invention in particular a characteristic value which changes during operation a motor vehicle or its components, such as gears direction or coupling device.

The control device or tempera are preferably used turermittungseinrichtung an electrical current or electrical voltage, such as an electrical Current or an electrical voltage that is applied to an electric motor to determine the temperature and / or the energy slow. This electrical current or this electrical voltage can be the current or voltage on a selector motor or a switch motor of a transmission device is present or the current or voltage on an electric motor of a clutch lungseinrichtung is present, which allows the hitch tion device can be moved to different switching positions can. This operating characteristic value is preferably the engine speed. This operating characteristic value is particularly preferably the switching frequency sequence of predetermined switching operations, such as in particular  Switching operations by the transmission device or the Coupling device can be executed. Especially before the characteristic value is an average switching frequency. In particular re is the characteristic value of the number of switching operations in a predetermined period of time to be executed.

According to a preferred embodiment of the invention Gear unit and / or clutch switching operations set-up automated using switching characteristics be carried out. These switching characteristics show in particular the switching points or switching times depending on correct operating parameters of the motor vehicle or at least one of its components.

These switching characteristics are particularly preferred correct conditions depending on the recorded temperature and / or depending on the energy input determined in egg ne predetermined device changed. Particularly preferred who the changed or these changed switching characteristics to Er testify the output signals of the control device used.

This enables, in particular, according to the invention that Switching characteristics or switching times from temperature or the energy input of predetermined devices or media hang. The switching characteristics are particularly such modified to cause the thermal load on the predetermined facilities or the predetermined medium right is induced.

The number of executable and / or is particularly preferred the initiated switching operations of the transmission device and / or the coupling device depending on the detected tempera structure or depending on the determined energy input different. This change is carried out in particular if the  Temperature is greater than a predetermined limit temperature or the energy input is greater than a predetermined energy is the casting limit.

A display device is preferably provided, in particular can be specially designed visually or acoustically and which the driver of a motor vehicle with control device under predetermined conditions indicates that the control device their output signals according to a cooling characteristic wants to or will produce or that there are circumstances, wel the transmission of the output signals according to a cooling Let characteristic become meaningful, for example a to prevent thermal overload.

In particular, the display device shows visually or acu Stisch that the control device according to output signals a cooling characteristic will produce when the temp temperature determination device indicates that the temperature in egg ner predetermined facility or location of a facility tion or the energy input in this facility or a predetermined medium is greater than a predetermined temperature or is a predetermined energy limit.

According to a preferred embodiment of the invention, the Control device output signals according to a cooling Generate characteristic when a display device is displayed has that the control device according to the output signals a cooling characteristic will produce and a vorbe correct return signal, which is particularly due to the manual Actuation of a device generated on the display device can be transmitted to the control device. This return signal can indicate to the control device that generates the output signals according to the cooling characteristic should or should not be generated.  

The invention thus offers in particular the possibility that the Confirm driver of a motor vehicle with control device can reject or refuse if the display device indicates that the control device intends to output the signals according to a cooling characteristic, because the Temperature and / or the energy input in predetermined areas chen has exceeded a predetermined limit.

This in particular increases the flexibility of a control system device improved because an additional intervention is possible speed for the driver of a motor vehicle.

According to a particularly preferred embodiment of the invention causes the cooling characteristic according to which the tax tion device under predetermined conditions output signals that the control device for little least a predetermined period of time or until the occurrence of a predetermined event not predetermined output signals generated when the temperature determining device indicates that the temperature increases in a predetermined position is greater than a predetermined temperature limit and / or the Energy input into a predetermined facility or vorbe correct medium is greater than a predetermined energy limit.

Special functionalities of the Control device under predetermined conditions, that is especially when the thermal energy is in predetermined A directions and / or in predetermined media a predetermined Has exceeded the limit for at least one predetermined Time period or event-driven by the control device device or its output signals are no longer executed or enables. For example, a start is prevented in fourth gear is possible, or the Clutch can be operated slipping, or it becomes a  The clutch can only be opened when another Gear is engaged or the vehicle is to be stopped or similar.

According to a preferred embodiment of the invention, the Cooling characteristic under predetermined conditions ne emergency driving characteristic. This emergency driving characteristic causes in particular, that only predetermined gear shift operations device and / or the coupling device can be switched can. This ensures that the motor vehicle with Control device can be operated. It will in particular which according to the invention only executed an emergency driving program, wel ches can in particular be an emergency driving program, which for other purposes can also be used. Especially before is added according to the cooling characteristic or the emergency driving characteristics executed an emergency driving program, which in essentially corresponds to an emergency driving program which in case of sensor failure of predetermined sensors of a motor vehicle is initiated and executed. The emergency driving program is in particular in particular a predetermined characteristic, according to which the Control device generates output signals.

According to a preferred embodiment of the invention, the Motor temperature or the cooling temperature or the energy input determined in the engine or the cooling water, taking the tax Rungsvorrichtung the gear device according to a cooling control characteristics when the determined temperature is greater than a predetermined temperature limit or the Energy input is greater than a predetermined energy limit. According to this cooling characteristic, be acts that the switching frequency of the transmission device increases is, so that more switching operations per unit of time who performed the. This increase in the switching frequency causes, in particular, that the proportion of powertrain interruptions is increased  and / or the proportion of time in which a higher gear is switched, increases. This causes the middle engine speed Number is reduced so that the engine is at an operating point with cheaper efficiency and therefore also more economical is operated. Due to the lower proportion of lost energy due to the improved efficiency, the engine temperature be lowered so that the cooling water overheats can be prevented.

According to a preferred embodiment of the invention, the Engine temperature and / or the cooling water temperature and / or the Energy input into the engine or the cooling water determines where the engine speed is reduced when the temperature rises than a predetermined temperature limit or energy is greater than a predetermined energy limit.

It is particularly preferred if the cooling water temperature is too high structure, especially when the cooling water temperature is higher than a predetermined temperature limit, the engine speed limited to a predetermined value which can be variable can and especially from the current cooling water temperature can depend.

According to a preferred embodiment of the invention, the Driving program or the driving mode in which a motor vehicle operated, changed under predetermined conditions, if it is determined that the cooling water temperature or Engine temperature or the energy input into the cooling water or in the engine is greater than a predetermined limit.

It is particularly preferred that when the motor vehicle or the transmission device automated in sports mode is driven to an economy mode automated or auto is switched mathematically when the temperature is a predetermined  te temperature limit has exceeded or the energy input is greater than a predetermined energy limit.

According to a preferred embodiment, the manual Mo dus automatically switched to economy mode when fixed is set that the energy input in the predetermined on direction or the predetermined medium larger than a vorbe is correct energy input or the temperature is greater than one predetermined temperature limit.

According to a particularly preferred embodiment of the invention the engine speed or the average engine speed is reduced device or the switching frequency is increased or a changed one Circuit program used when it is determined that the Mo gate temperature in a predetermined high temperature range which is in particular greater than a predetermined limit temperature, and / or the engine speed and / or the engine moment are in a range which is an upshift in egg enables a higher gear according to predetermined criteria, and / or a change in the according to predetermined conditions Operating parameters are not excluded and / or a driving stuff with automated manual gearbox in one automated ten mode is operated, in particular the shift lever in the position "D".

Criteria that allow a higher gear to be selected a predetermined minimum driving comfort or host economic criteria, such as a limit for the Fuel consumption or the like.

A change in the driving operation parameters can in particular be excluded for security reasons.  

Generated according to a preferred embodiment of the invention the control device its output signals according to an Ab cooling characteristic when the temperature of the clutch is direction or a component of the coupling device has exceeded the predetermined temperature limit and / or the Energy input into this component or the clutch device device is greater than a predetermined energy limit, the Output signals of the control device in particular cause ken that driving comfort in a vehicle with control direction is impaired.

This poor driving comfort does not have to be due to technical reasons, but can be generated consciously to the driver on which he is to draw attention to high temperatures. Particularly preferred is determined according to a predetermined emergency running characteristic for example also with other functional impairments, like the functional impairment of a predetermined sensor or the like can be used, the output signals of the control device generated when a clutch temperature structure or a temperature of a component of the clutch device device is determined to be greater than a predetermined tempe temperature limit or if the energy input into the clutch device or the component larger than a predetermined energy is the casting limit.

Such an emergency running characteristic can in particular be possible Chen that a vehicle can still be operated, however predetermined driving functionalities cannot be carried out. The Emergency running characteristics can in particular also be designed in this way be that the vehicle jerks while driving, so that the driver on the functional impairment, especially the increased Temperature.  

According to a particularly preferred embodiment of the invention the control device generates output signals in dependence cooling characteristic when it is determined that the coupling temperature or the temperature of a component the coupling device or the energy input into the coupling tion device or the component larger than a predetermined Limit temperature or greater than a predetermined energy limit is. The component of the coupling device can in particular be a Electric motor, which is the actuation of the clutch device tion causes.

Preferably, the cooling characteristic causes a be limited number of gear unit gearshifts can be switched. Cooling is particularly preferred tion characteristic that the switching operations of the clutch direction can only be carried out if predetermined conditions conditions are given. Such a condition can in particular be that a gear change should be switched or that Motor vehicle to be stopped with control device.

The cooling characteristic preferably has the effect that only passing agreed switching operations of the transmission device who executed can, in particular the number of permissible and / or the switching operations carried out by the gear unit tion is reduced.

Detected according to a preferred embodiment of the invention the temperature determining device the temperature of the transmission device or a component of the transmission device or the energy input into the transmission device or construction partly, the control device ge the output signals generated according to a cooling characteristic when this energy gieeintrag is greater than a predetermined energy input or this temperature is greater than a predetermined temperature.  

From this generated according to the cooling characteristic gear signals is caused that switching operations of the transmission direction to changed switching times or switching times ge are switched, i.e. at switching times or switching times, which are different from those to which it is switched when the temperature or the energy input is lower, in particular which is less than a predetermined limit.

The cooling characteristic preferably has the effect that at least a switching characteristic, which is used to generate output signals of the control device can be changed , which is particularly preferably changed in such a way that it has a larger switching hysteresis.

Preferably, the cooling characteristic causes vorbe coordinated switching functionalities at least temporarily switches will not be able to be executed as in special the switching functionality that a forced return scarf gear is executed in a lower gear if detected will that a motor vehicle with control device downhill drives or drives uphill.

The object is further achieved by use according to An Proverbs 33.

The object is further achieved by a motor vehicle according to Claim 34.

The problem is also solved by a procedure for the recovery ben a control device according to claim 35.

The problem is also solved by a procedure for the recovery ben of a motor vehicle according to claim 36.  

The claims filed with the application are Formu Proposals continue without prejudice to achieve them patent protection. The applicant reserves the right to go further right, so far only in the description and / or the drawings of claimable features.

Relationships used in subclaims point to the further training of the subject of the main claim by the Characteristics of the respective subclaim; they are not as a waiver of the achievement of an independent, object protection for the characteristics of the related subclaims to understand.

However, the subjects of these subclaims also form automatic inventions, one of the objects of the have previous design independent design.

The invention is not based on the embodiment (s) limited to the description. Rather, within the scope of the Erfin Numerous changes and modifications possible, esp special such variants, elements and combinations and / or Materials such. B. by combination or modification of individual in conjunction with those in the general description and embodiments and the claims described and in the features or elements contained in the drawings or procedure steps are inventive and by combinable features to a new subject or to new procedural steps or process step sequences, also insofar as they Test and work procedures concern.

It should be noted that the interaction of the individual Features according to the invention in any combination is preferred. In particular, those by the independent Combinations of features disclosed claims with omission  one or more features each preferred. The fiction methods according to the invention are also preferred in combination.

It should also be noted that the comments on all known arrangements that do not relate to certain pressure refer to documents, primarily the applicant or the he are known so that the inventor can protect them reserves, unless it is also known to the public are.

It should be noted that when linking features by "or" this "or" each on the one hand as a mathematical "or" and on the other hand as the other possibility closing "or" is to be understood.

It should also be noted that the concept of taxation as well as terms derived therefrom within the meaning of the invention is to be understood. In particular, it includes rules and / or taxes in the sense of DIN.

It is apparent to the person skilled in the art that the is shown here th embodiments of the invention a variety further modifications and designs are conceivable by the invention are covered. The invention is particularly limited special not only to the embodiments shown here.

In the following, the invention will now be described on the basis of exemplary non-limiting embodiments explained in more detail.

It shows:

Figure 1 shows a first exemplary embodiment of the invention in a schematic, partially sectioned view.

2 shows a second exemplary embodiment of the invention in a schematic partially sectional view; FIG. and

Fig. 3 shows an exemplary process flow according to the invention in a schematic representation.

Fig. 1 shows schematically a vehicle 1 with a drive unit 2 , such as an engine or internal combustion engine. Furthermore, a torque transmission system 3 and a transmission 4 are shown in the drive train of the vehicle. In this example, the embodiment of the torque transmission system 3 is arranged in the power flow between the engine and the transmission, with an input torque of the engine via the torque transmission system to the transmission and from the transmission 4 on the output side to an output shaft 5 and to a downstream axis 6 and to the wheels 6 a is transferred.

The torque transmission system 3 is designed as a clutch, such as a clutch, multi-plate clutch, magnetic powder clutch or converter lock-up clutch, wherein the clutch can be a self-adjusting, a wear-compensating clutch. The transmission 4 is shown as a manual transmission, such as a change-speed transmission. According to the inventive concept, the transmission can also be an automated manual transmission, which can be switched automatically by means of at least one actuator. An automated gearbox is also to be understood as an automated gearbox which is switched with an interruption in tractive force and the gearbox transmission switching operation is controlled by at least one actuator.

An automatic transmission can also be used where in an automatic transmission, a transmission essentially without a train  is power interruption in the switching operations and that in the Usually built up by planetary gear stages.

Furthermore, a continuously variable transmission, such as in the case of a conical pulley belt transmission, can be used for who. The automatic transmission can also be designed with an ordered torque transmission system 3 on the output side, such as clutch or friction clutch. The torque transmission system can also be designed as a starting clutch and / or reversing clutch for reversing the direction of rotation and / or safety clutch with a selectively controllable, transferable torque. The torque transmission system can be a dry friction clutch or a wet friction clutch that runs in a fluid, for example. It can also be a torque converter.

The torque transmission system 3 has a drive side 7 and an output side 8 , a torque being transmitted from the drive side 7 to the output side 8 by the clutch disc 3 a by means of the pressure plate 3 b, the plate spring 3 c and the release bearing 3 e and the flywheel 3 d force is applied. For this application, the release lever 20 is actuated by means of an actuating device such as an actuator.

The torque transmission system 3 is controlled by means of a control unit 13 , such as a control unit, which can include the control electronics 13 a and the actuator 13 b. In another advantageous embodiment, the actuator and the control electronics can also be arranged in two different structural units, such as housings.

The control unit 13 can contain the control and power electronics for controlling the electric motor 12 of the actuator 13 b.

In this way it can advantageously be achieved, for example, that the system requires the installation space for the actuator with electronics as the only installation space. The actuator consists of a drive motor 12 , such as an electric motor, the electric motor 12 via a gear, such as worm gear or spur gear or cure bel gear or threaded spindle gear, acts on a Geberzylin 11 . This effect on the master cylinder can take place directly or via a linkage.

The movement of the output part of the actuator, such as the Geberzylin derkolbens 11 a, is detected with a clutch travel sensor 14 , which detects the position or position or the speed or the acceleration of a variable which is proportional to the position or engagement position or the speed or acceleration the clutch is. Ge Ge cylinder 11 is connected via a pressure medium line 9 , like hydraulic likleitung, with the slave cylinder 10 . The output element 10 a of the slave cylinder is operatively connected to the release lever or release means 20 , so that movement of the output part 10 a of the slave cylinder 10 causes the return means 20 to also be moved or tilted to control the torque that can be transmitted from the clutch 3 .

The actuator 13 b for controlling the transferable torque of the torque transmission system 3 can be actuated by pressure medium, ie it can be equipped with a pressure medium transmitter and slave cylinder. The pressure medium can be, for example, a hydraulic fluid or a pneumatic medium. The actuation of the pressure medium transmitter cylinder can be provided by an electric motor, wherein the electric motor 12 can be controlled electronically. The drive element of the actuator 13 b can be in addition to an electromotive drive element also another, for example pressure medium-actuated drive element. Furthermore, magnetic actuators can be used to set a position of an element.

In the case of a friction clutch, the control of the portable torque takes place in that the contact pressure of the friction plate of the clutch disc between the flywheel 3 d and the pressure plate 3 b takes place in a targeted manner. About the position of the disengagement by means of 20 , such as release fork or central release, the application of force to the pressure plate or the friction linings can be controlled in a targeted manner, the pressure plate being moved between two end positions and being able to be set and fixed as desired. One end position corresponds to a fully engaged clutch position and the other end position to a fully disengaged clutch position. For controlling a transmission torque, which is, for example, clotting ger than the currently applied engine torque, at play, a position of the printing plate 3 may b driven who, which is the functions in an intermediate region between the two Endposi. The clutch can be fixed in this position by means of the targeted actuation of the disengaging means 20 . However, it is also possible to control transmissible clutch torques that are above the current engine torques. In such a case, the currently pending engine torques can be transmitted, the torque irregularities in the drive train being damped and / or isolated in the form of, for example, torque peaks.

For control, such as control or regulation, the torque system, sensors are still used, which at least at times the relevant sizes of the entire sy monitor the stems and the status parameters required for control ß, deliver signals and measured values by the control unit processed, with a signal connection to others Electronic units, such as for an electric motor  nik or electronics of an anti-lock braking system (ABS) or an anti-slip regulation (ASR) can be provided and best can hen. The sensors detect speeds, for example, such as wheel speeds, engine speeds, the position of the Lasthe bels, the throttle valve position, the gear position of the transmission bes, a shift intention and other vehicle-specific characteristics sizes.

Fig. 1 shows that a throttle sensor 15 , an engine speed sensor 16 , and a speedometer sensor 17 are used and measured values or information to the control unit th. The electronics unit, such as a computer unit, the control unit 13 a processes the system input variables and gives control signals to the actuator 13 b.

The transmission is designed as a step change transmission, the gear ratios being changed by means of a shift lever or the transmission being actuated or operated by means of this shift lever. Furthermore, at least one sensor 19 b is arranged on the operating lever, such as shift lever 18 , of the manual transmission, which detects the intention to shift and / or the gear position and forwards it to the control unit. The sensor 19 a is articulated to the transmission and detects the current gear position and / or an intention to shift. The shift intent detection using at least one of the two sensors 19 a, 19 b can take place in that the sensor is a force sensor which detects the force acting on the shift lever. Furthermore, the sensor can also be designed as a displacement or position sensor, with the control unit recognizing a switching view from the change in position signal over time.

The control unit is at least temporarily in signal connection with all sensors and evaluates the sensor signals and system input variables in such a way that the control unit issues control or regulation commands to the at least one actuator as a function of the current operating point. The drive element 12 of the actuator, such as an electric motor, receives from the control unit which controls the clutch actuation a manipulated variable as a function of measured values and / or system input variables and / or signals from the connected sensors. For this purpose, a control program is implemented in the control device as hardware and / or software, which evaluates the incoming signals and calculates or determines the output variables on the basis of comparisons and / or functions and / or characteristic maps.

The control unit 13 has advantageously implemented a torque determination unit, a gear position determination unit, a slip determination unit and / or an operating state determination unit or it is in signal connection with at least one of these units. These units can be implemented by control programs as hardware and / or software, so that by means of the incoming sensor signals the torque of the drive unit 2 of the vehicle 1 , the gear position of the transmission 4 and the slip which prevails in the area of the torque transmission system and the current one Be operating state of the vehicle can be determined. The gear position determination unit determines the currently engaged gear on the basis of the signals from the sensors 19 a and 19 b. The sensors are articulated on the shift lever and / or on gearbox-internal actuators, such as a central shift shaft or shift rod, and detect them, for example the position and / or the speed of these components. Furthermore, a load lever sensor 31 , such as an accelerator pedal, can be arranged on the load lever 30 , which detects the load lever position. Another sensor 32 can act as an idle switch, ie when the accelerator pedal, such as a load lever, this idle switch 32 is switched on and when a signal is not actuated, it is switched off, so that digital information can be used to identify whether the load lever, such as the accelerator pedal, is operated. The load lever sensor 31 detects the degree of actuation of the load lever.

Fig. 1 shows in addition to the accelerator pedal 30 , as a load lever, and the sensors associated therewith a brake actuation element 40 for actuating the service brake or the parking brake, such as the brake pedal, hand brake lever or hand or foot actuated actuating element of the parking brake. At least one sensor 41 is arranged on the actuating element 40 and monitors its actuation. The sensor 41 is designed, for example, as a digital sensor, such as a switch, which detects that the actuating element is actuated or not actuated. With this sensor, a signaling device, such as a brake light, can be in signal connection, which signals that the brake is actuated. This can be done for both the service brake and the parking brake. However, the sensor can also be designed as an analog sensor, such a sensor, such as a potentiometer, determining the degree of actuation of the actuating element. This sensor can also be in signal connection with a signal device.

Fig. 2 shows schematically a drive train of a driving tool with a drive unit 100 , a torque transmission system 102 , a transmission 103 , a differential 104 such as drive axles 109 and wheels 106th The Drehmomentübertra supply system 102 is or mounted on or to a flywheel 102 angeord a net, wherein the flywheel starter gear is usually an on 102 carries b. The torque transmission system has a pressure plate 102 d, a clutch cover 102 e, a plate spring 102 f and a clutch disc 102 c with friction linings. Between the clutch disc 102 d and the flywheel 102 a, the clutch disc 102 c is optionally arranged with a damping device. A force accumulator, such as plate spring 102 f, acts on the pressure plate in the axial direction towards the clutch disc, with a release bearing 109 , as is the case, for example, with pressure-actuated central release mechanism, for actuating the torque transmission system. A release bearing 110 is arranged between the central release device and the plate spring tongues of the plate spring 102 f. The disc spring is acted on by an axial displacement of the release bearing and disengages the clutch. The clutch can also be designed as a pressed or pulled clutch.

The actuator 108 is an actuator of an automated gearbox, which also includes the actuation unit for the torque transmission system. The actuator 108 actuates GE internal gear shift elements, such as a shift drum or shift rods or a central gearshift shaft of the gearbox, whereby the gears can be inserted or removed in, for example, sequential order or in any order. Via the connec tion 111 , the clutch actuating element 109 is actuated. The control unit 107 is connected to the actuator via the signal connection 112 , the signal connections 113 to 115 being connected to the control unit, the line 114 processing incoming signals, the line 113 processing control signals from the control unit and the connection 115, for example establishes a connection to other electronic units by means of a data bus.

To start or to start the vehicle essentially from a standing position or from a slow rolling movement, such as creeping movement, that is to say to accelerate the vehicle in a targeted manner on the driver's side, the driver essentially operates only the accelerator pedal, such as the load lever 30 , the controlled one or controlled automated clutch actuation by means of the actuator controls the transmissible torque of the torque transmission system during a starting process. By actuating the load lever, the driver's desire for a more or less strong or fast starting process is detected by means of the load lever sensor 31 and then controlled accordingly by the control unit. The accelerator pedal and the sensor signals of the accelerator pedal are used as input variables for controlling the starting process of the vehicle.

When starting, the portable torque, such as clutch torque M _ksoll, is essentially determined by means of a predefinable function or by means of characteristic curves or maps, for example, as a function of the engine speed, the dependence on the engine speed or on other variables such as the Engine torque, is advantageously realized via a map or a characteristic curve.

If the load lever or the accelerator pedal is actuated to a certain value a during a starting process, essentially from a standing position or from a creeping condition, at low speed, an engine torque 40 is activated by means of an engine control. The control unit of the automated clutch actuation 13 controls the transferable torque of the torque transmission system according to predeterminable functions or maps, so that a steady state of equilibrium was established between the actuated engine torque and the clutch torque. The state of equilibrium is characterized as a function of the load lever position a by a defined starting speed, a starting or engine torque as well as a defined transferable torque of the torque transmission system and a torque transmitted to the drive wheels, such as drive torque. The functional relationship of the starting torque as a function of the starting speed is referred to below as the starting characteristic. The load lever position a is proportional to the position of the throttle valve of the engine.

Fig. 2 shows in addition to the accelerator pedal 122 , such as load lever, and egg nem related sensor 123 a Bremsenätäti supply element 120 for operating the service brake or the parking brake, such as the brake pedal, hand brake lever or hand or foot-operated actuating element of the parking brake. At least one sensor 121 is arranged on the actuating element 120 and monitors its actuation. The sensor 121 is designed, for example, as a digital sensor, such as a switch, which detects that the actuating element is actuated or not. With this sensor, a signaling device, such as a brake light, can be in signal connection, which signals that the brake is actuated. This can be done for both the service brake and the parking brake. However, the sensor can also be designed as an analog sensor, such a sensor, such as a potentiometer, determining the degree of actuation of the actuating element. This sensor can also be in signal connection with a signal device.

Fig. 3 shows the flow of an exemplary method according to the invention.

In step 300 , a standard shift characteristic is specified, according to which the output signals of the control device can be generated in order to effect predetermined shifting operations of the transmission.

In step 302 , it is checked whether the engine speed and the engine torque are in a predetermined range, which in particular permits an upshift to a higher gear in accordance with predetermined criteria.

If the engine speed or engine torque is not in this The standard characteristic is retained.

If, however, the engine speed and the engine torque are in this range, a check is made in step 304 as to whether the inserted gear stage fulfills predetermined conditions. In particular, it is checked here whether the gear stage selected is a gear stage in which shifting operations are carried out automatically.

Unless the gear selected does not meet the predetermined conditions the standard switching characteristic is maintained.

However, if the selected gear stage fulfills the predetermined conditions, it is checked in step 306 whether the cooling water temperature is greater than a predetermined temperature limit. If the cooling water temperature is not above this before a certain temperature limit, the standard switching characteristic is maintained.

However, if the cooling water temperature is greater than the predetermined temperature limit, the switching characteristic is changed in step 308 . Additional query routines can be executed here.

Claims (36)

1. Control device for controlling at least one device, which can be arranged at least partially in the drive train of a motor vehicle, wherein

• - The control device can send out output signals to this device according to a predetermined actuation characteristic, which can cause the device to be moved into different actuation positions;
• - The control device under predetermined conditions with at least one Temperaturermittlungsein direction is connected;
• this temperature determination device can determine a temperature of a device and / or a medium, it being possible to use this temperature to assess whether the device, which can at least partially be arranged in the drive train of a motor vehicle, has warmed up or not, and / or wherein this temperature determination device can create an energy balance for at least one of these devices or the medium;
• - The control device generates the output signals according to a cooling characteristic when the temperature determination device indicates that the tempera ture at a predetermined position is greater than a predetermined temperature limit and / or the energy entry into a predetermined device and / or a predetermined medium is greater than a predetermined Is energy limit; and
• - The cooling characteristic causes in particular that at least one characteristic value of the device, which can be at least partially arranged in the drive train of a motor vehicle, or a device which interacts with this device under predetermined conditions, is changed so that this device can cool down.

2. Control device, in particular according to claim 1, there characterized in that the facility which little least partially in the drive train of a motor vehicle can be arranged, a drive device, such as Brenn Motor machine, and / or a coupling device and / or has a transmission device. 3. Control device, in particular according to claim 2, because characterized in that the control device little least one of the facilities, which at least partially are arranged in the drive train of a motor vehicle or can be, in particular a drive device and / or a coupling device and / or a transmission device, under predetermined conditions automati siert and / or electronically controlled and / or actuated. 4. Control device, in particular according to at least one of claims 2 and 3, characterized in that the output signals of the control device can cause the coupling device to be switched to different switching positions, the coupling device in particular

• - Can be switched to at least a first switching position in which the clutch device can not transmit a torque;
• - Can be switched to at least a second switching position, in which the clutch device is essentially closed and a torque introduced into it can be transmitted essentially completely; and
• - Can be switched to at least a third switching position, in which the clutch device can transmit a substantially small torque, the clutch device slipping in this switching position, in particular under predetermined conditions.

5. Control device, in particular after at least one of claims 2 to 4, characterized in that the Ge drive device an at least partially automated Gear device is, this gear device in particular has an actuating device which comprises at least one electric motor, which switching between different gear stages can effect, and wherein the control device Transmit output signal to this actuator can, which according to a predetermined characteristic ei ne operation of the gear device can cause. 6. Control device, in particular according to at least one of the preceding claims, characterized by little least a shift lever or the like, which of the Gear device is included and which manually in un Different gear lever positions can be switched can, the control device which is connected to the coupling output device emitted according to a predetermined characteristic under predetermined given units taking into account the gear lever position testifies.   7. Control device, in particular according to claim 6, there characterized in that the shift lever in at least a shift lever position from a group of shift levers positions can be switched, which is the shift lever positions "roll-away protection (P)", "drive backwards (R)", "Neutral position (N)", "drive forward (D)", "manual Shift possible (M) "," Steptronic higher gear (+) ", "Steptronic lower gear (-)", "Sport operation", "Economy mode" and "winter mode". 8. Control device, in particular according to at least one of the preceding claims, characterized in that the control device under predetermined conditions th can generate driver-specific output signals, the control device in generating this Output signals in particular the actuation position Device, such as a fuel metering device, which by a driver of a motor vehicle with tax tion device for operating this motor vehicle can be done, and / or the temporal course of this Actuation position taken into account. 9. Control device, in particular according to at least one of the preceding claims, characterized in that a motor vehicle with a control device can be operated in an eco nomy mode and / or in a sport mode, the control device

• - In the sport mode, the output signals are generated in accordance with a sport characteristic, which in particular causes the switching points at which the transmission device is switched to a higher gear stage to be given at low engine speeds; and
• - In economy mode, the output signals are generated according to an eco nomy characteristic, which in particular acts that the switching points at which the transmission device is switched to a higher gear stage are given at high engine speeds.

10. Control device, in particular after at least one of claims 2 to 9, characterized in that the Can cause output signals of the control device, that the transmission device in different switching positions where you have a different translation have tongues, can be switched, the tax tion device, the output signal in particular to a Actuator sent which for actuation a switching device is provided. 11. Control device, in particular after at least one of the preceding claims, characterized in that the temperature determination device is an evaluation unit direction and / or a computing device and / or a Storage device and / or a sensor device has. 12. Control device, in particular according to at least one of the preceding claims, characterized in that the temperature determination device at least one sen has sensor device, said sensor device in particular can detect a temperature. 13. Control device, in particular after at least one of the preceding claims, characterized in that the temperature determining device the temperature and / or the energy input, which at predetermined positions tion at least one predetermined device, such as  ner device, which is at least partially in the drive strand of a motor vehicle can be arranged against ben are able to calculate. 14. Control device, in particular according to at least one of the preceding claims, characterized in that the temperature determining device for calculating the Temperature and / or the energy input predetermined characteristic fields or characteristic curves or characteristic values, in particular agreed operating characteristics of the facility, used as in particular a current or a voltage on a Electric motor is present, or the engine speed or the shift frequency of predetermined switching operations or the like, or the time course of at least one of these characteristics values taken into account. 15. Control device, in particular according to at least one of the preceding claims, characterized in that Gear unit and / or clutch switching operations automated device using Switching characteristics can be made, these Switching characteristics the switching points depending on Show correct operating parameters. 16. Control device, in particular according to at least one of the preceding claims, characterized in that the switching characteristics as a function of the recorded temperature structure and / or depending on the energy determined be changed slowly and / or changed shifting characteristics s for generating output signals from the controller direction and / or switching operations are used. 17. Control device, in particular according to at least one of the preceding claims, characterized in that  the number of executable and / or initiated switching operations of the transmission device and / or the clutch device depending on the detected temperature and / or depending on the determined energy input be changed, especially if the temperature is higher as a predetermined limit temperature and / or the ener gieeintrag is greater than a predetermined energy limit. 19. Control device, in particular according to at least one of the preceding claims, characterized by an pointing device, which in particular visually and / or is acoustically trained and which one to the driver Motor vehicle with control device under predetermined conditions indicates that the control device the output signals according to a cooling characteristic will generate when the temperature determining device indicates that the temperature is at a predetermined on direction or a predetermined medium larger than one is predetermined temperature limit and / or the energy carry in a predetermined facility or in a pre correct medium is greater than a predetermined energy limit is. 19. Control device, in particular according to claim 18, there characterized in that the control device the Output signals according to a cooling characteristic testifies when the display device has indicated that the Control device the output signals according to an Ab will produce cooling characteristics and a predetermined Return signal, which is particularly due to the manual operation generated a device on the display device can be transmitted to the control device which indicates to the control device that it  the output signals according to a cooling characteristic should generate. 20. Control device, in particular according to at least one of the preceding claims, characterized in that given the cooling characteristic under predetermined conditions units causes the control device for little least a predetermined period of time or until entry a predetermined event predetermined output signals not generated when the temperature determination is direction indicates that the temperature at a predetermined th position greater than a predetermined temperature limit and / or the energy input into a predetermined one direction is greater than a predetermined energy limit. 21. Control device, in particular according to at least one of the preceding claims, characterized in that the sensed temperature the engine temperature and / or cooling water temperature of the cooling circuit of a motor vehicle, or the temperature of an electric motor of the clutch device device and / or the gear device or the respective Energy input or the like is. 22. Control device, in particular according to at least one of the preceding claims, characterized in that given the cooling characteristic under predetermined conditions is an emergency driving characteristic, this emergency Driving characteristics in particular causes only vorbe correct switching operations of the transmission device and / or the coupling device can be switched, which make sure that a motor vehicle with controls direction can be operated.   23. Control device, in particular according to at least one of the preceding claims, characterized in that given the cooling characteristic under predetermined conditions units causes the control device to predetermined Output signals for at least a predetermined time period ode generated, which cause the switching frequency, with which the switching operations in the transmission device be performed, reduced and / or to a predetermined Limit switching frequency is limited, depending on engine temperature or cooling water temperature or the energy input into the engine and / or if the Engine or the cooling water temperature a predetermined Temperature has exceeded or if the energy Entry in the motor above a predetermined energy limit has stepped. 24. Control device, in particular according to at least one of the preceding claims, characterized in that given the cooling characteristic under predetermined conditions units causes the control device to predetermined Output signals for at least a predetermined time period ode generated, which cause the engine speed to decrease and / or to a predetermined engine speed limit is limited, depending on the engine temperature structure or the cooling water temperature or the energy input in the engine and / or when the engine or cooling water temperature exceeds a predetermined temperature limit ten or if the energy input into the motor has a has exceeded the predetermined energy limit. 25. Control device, in particular according to at least one of the preceding claims, characterized in that given the cooling characteristic under predetermined conditions units causes the control device to predetermined  Output signals for at least a predetermined time period ode generated, which cause a motor vehicle with Control device in a changed mode or ge is operated according to a changed driving program, and depending on the engine temperature or the cooling water temperature or the energy input into the motor and / or when the engine or cooling water temperature ne has exceeded a predetermined temperature limit or when the energy input into the engine is a predetermined Has exceeded energy limit, the motor vehicle according to different driving programs or in under Different modes can be operated, the control tion device according to each of these driving programs or modes associated with characteristic output signals can testify, which in particular cause the transmission device and / or the coupling device and / or the drive device according to a respective character stik is operated. 26. Control device, in particular according to at least one of the preceding claims, characterized in that given the cooling characteristic under predetermined conditions units causes the control device of one Sport mode or a sport driving program or a manual len mode to an economy mode or an economy Driving program changes so that the output signals according to an economy characteristic. 27. Control device, in particular according to at least one of the preceding claims, characterized in that given the cooling characteristic under predetermined conditions units causes the control device to predetermined Output signals for at least a predetermined time period ode, which cause driving comfort in one  Motor vehicle with control device impaired is, depending on the clutch temperature or the temperature of a component of the coupling device, as in particular comprises one of the coupling device ten electric motors, or the energy input into the clutch device or in the component of the coupling device or if the clutch temperature or the temperature of the component encompassed by the coupling device has exceeded the agreed temperature limit or if the Energy input into the coupling device or the construction partly exceeded a predetermined energy limit. 28. Control device, in particular according to at least one of the preceding claims, characterized in that given the cooling characteristic under predetermined conditions units causes the control device to predetermined Output signals for at least a predetermined time period ode, which cause a limited number of predetermined switching operations of the transmission device can be switched and / or the switching operations of the Coupling device only under certain conditions, such as for changing gear or stopping the motor vehicle, are possible, in particular causing the Driving comfort in a motor vehicle with control device tion is affected, depending on the Coupling temperature or the temperature of a component Coupling device, such as one from the clutch tion device included electric motors, or energy in the coupling device or in the component of the Coupling device or when the coupling temperature or the temperature of the coupling device grasped component a predetermined temperature limit or if the energy input into the dome  lungseinrichtung or in the component a predetermined Has exceeded the energy limit. 29. Control device, in particular according to at least one of the preceding claims, characterized in that given the cooling characteristic under predetermined conditions units causes the control device to predetermined Output signals for at least a predetermined time period ode generated, which cause only certain Schaltvor gears and / or one according to a predetermined character Stik reduced number of gear changes means for at least a predetermined period of time or until a predetermined event occurs can be performed, depending on the Ge drive temperature or the temperature of a component Gear device, such as one from the Ge Drive device included electric motor, or energy in the transmission device or in the component of the Gear device or when the gear temperature or the temperature of that covered by the transmission device Component exceeded a predetermined temperature limit or if the energy input into the gearbox device or in the component a predetermined energy limit has exceeded. 30. Control device, in particular according to at least one of the preceding claims, characterized in that given the cooling characteristic under predetermined conditions units causes the control device to predetermined Output signals for at least a predetermined time period ode generated, which cause switching operations of Ge drive device switched at changed switching times depending on the gearbox temperature or the temperature of a component of the gear unit  device, such as in particular one of the transmission device included electric motors, or the energy input into the transmission device or in the component of the transmission device or if the gearbox temperature or the temperature of the a component encompassed by the gear device has exceeded the agreed temperature limit or if the Energy input into the transmission device or into the building partly exceeded a predetermined energy limit. 31. Control device, in particular according to at least one of the preceding claims, characterized in that given the cooling characteristic under predetermined conditions units causes the control device to predetermined Output signals for at least a predetermined time period ode generated, which cause at least one switching characteristic curve, in particular at least one in a characteristic diagram stored switching characteristic, which is used to generate off gear signals of the control device can be used can, is changed, depending on the transmission temperature or the temperature of a component of the Ge drive device, such as one of the transmission in particular device included electric motor, or the energy input in the transmission device or in the component of the transmission device or if the gearbox temperature or the Temperature of the structure covered by the gear mechanism partly exceeded a predetermined temperature limit or if the energy input into the transmission device or a predetermined energy limit in the component has stepped. 32. Control device, in particular according to at least one of the preceding claims, characterized in that given the cooling characteristic under predetermined conditions units causes the control device to predetermined  Output signals for at least a predetermined time period ode generated, which cause at least one switching characteristic is changed such that the switching hysteresis is changed, in particular enlarged, in Ab dependence of the gearbox temperature or the temperature egg nes component of the transmission device, such as in particular egg nes covered by the transmission device, or of the energy input into the transmission device or into the Component of the gear device or if the gear unit temperature or the temperature of the gear unit tion included component a predetermined temperature limit has exceeded or if the energy input into the Ge drive device or in the component a predetermined Has exceeded the energy limit. 33. Use of a control device according to at least one of the preceding claims in a motor vehicle. 34. Motor vehicle with a control device according to little at least one of claims 1 to 33. 35. Method for operating a control device according to at least one of claims 1 to 33. 36. Method for operating a motor vehicle according to An Proverbs 34.