DE102019203852A1 - Method for operating an electromotive window regulator - Google Patents

Abstract

The invention relates to a method (34) for operating an electromotive window regulator (8, 10) of a motor vehicle (2), in which a request (38) to adjust a window pane (14, 16) is detected, and the window pane (14, 26) ) is brought into a comfort position (42, 44). The comfort position (42, 44) is changed as a function of a quantity characterizing a noise development. The invention also relates to a method (34) for operating a window regulator arrangement (6) of a motor vehicle (2) and an electromotive window regulator (8, 10) of a motor vehicle (2).

Description

The invention relates to a method for operating an electromotive window lifter and an electromotive window lifter. The electromotive window regulator is a component of a motor vehicle. The invention also relates to a method for operating a window lifter arrangement with a first electromotive window lifter and a second electromotive window lifter. The window regulator arrangement is also part of the motor vehicle.

To increase comfort, motor vehicles usually have electromotive window lifters, each of which has a window pane driven by an electric motor. It is thus possible to open or close the window pane by means of the electric motor of the electric motorized window lifter. The electromotive window lifter is usually activated by means of a rocker switch, which is arranged in the area of a door or center console. Depending on the direction in which the rocker switch is actuated, the window pane is brought into the closed or open state.

In the event of excessive heat development or an unpleasant smell, air within a passenger compartment should be exchanged as quickly as possible. Some users also find an open window and thus an air flow through the passenger compartment pleasant. If, however, the motor vehicle is moved here, a comparatively strong air flow and additional turbulence occurs when the window is fully open, which can distract from driving activity and prevent a conversation within the passenger compartment. The window is therefore usually brought into a half-open position, with the window usually only being opened through a comparatively small slot. Depending on the driving situation, this results in a different level of noise exposure, as standing air pressure waves can propagate, for example, which depend on the width of the slot and the vehicle speed. The position of the window is therefore readjusted by the driver or another user. During these periods of time, the user's attention is not directed to the surroundings of the motor vehicle, which can lead to an accident or the like. Comfort for the user is also reduced.

The invention is based on the object of specifying a particularly suitable method for operating an electromotive window lifter of a motor vehicle and a particularly suitable method for operating a window lifter arrangement of a motor vehicle as well as a particularly suitable electromotive window lifter of a motor vehicle, advantageously increasing convenience.

With regard to the method for operating an electromotive window regulator, this object is achieved according to the invention by the features of claim 1, with regard to the method for operating a window regulator arrangement by the features of claim 8 and with regard to the electromotive window regulator by the features of claim 9. Advantageous further developments and refinements are the subject of the respective subclaims.

The method is used to operate an electromotive window regulator of a motor vehicle. The motor vehicle is expediently a land-based motor vehicle and, for example, a utility vehicle such as a truck or a bus. However, it is particularly preferred that the motor vehicle is a passenger car. The electromotive window lifter comprises an electric motor and a window pane driven by it. The electric motor is thus in operative connection with the window pane. For example, a gear is arranged between these, expediently in the form of a self-locking gear. The gear is preferably a worm gear. For example, a rope pulley or the like is driven by means of the transmission, which is in operative connection with the window pane and to which, for example, a component of the window pane is connected, as is fastened. The electric motor is, for example, a brushed commutator motor. However, the electric motor is particularly preferably designed to be brushless, which reduces wear. The electric motor is preferably a brushless direct current motor (BLDC).

The method is carried out, for example, completely or at least partially by means of a control unit of the electromotive window regulator. For this purpose, the control unit expediently comprises suitable electrical and / or electronic components. The control unit preferably comprises a microprocessor which, for example, is designed to be programmable. In an alternative to this, the control unit is formed, for example, by means of a user-specific circuit (ASIC).

The method provides that a request to adjust a window pane is recorded, in particular also referred to below as a request. The request corresponds in particular to comfort ventilation and thus deviates from a (user) request for a completely open or completely closed position of the window pane. For example, the request is created by means of the electric window regulator itself. For this, the Electromotive window lifters suitably have a corresponding unit. Particularly preferably, however, the request is created by a further component of the motor vehicle, which is signal-coupled to the electric window regulator. By means of this, the request is expediently fed into a bus system of the motor vehicle and thus transmitted to the electromotive window lifter, so that the request can be detected by means of the electromotive window lifter. The bus system is, for example, a LIN bus system, a CAN bus system or a Flexray bus system. In particular, the electromotive window lifter is operated in accordance with the respective bus system standard.

In a subsequent work step, the sliding window is brought into a comfortable position. The comfort position differs from the fully open and fully closed position. For example, the comfort position is at a comparatively small distance from the fully closed position, so that at least 2/3 of a window opening is covered by the window pane in the comfort position. In particular, a comparatively small gap is formed between an upper edge of the window pane and an upper edge of the window opening, for example between 5 cm and 0.5 cm or between 4 cm and 1 cm. An exchange of air to the passenger compartment is thus made possible through the gap formed in this way, an excessive draft being avoided. This also avoids excessive noise development.

In a further work step, the comfort position is changed as a function of a quantity characterizing a noise development. The characteristic variable is thus in particular a measure of the noise development. Here, when the comfort position has been changed, the window pane is also moved to the changed comfort position. With the changed comfort position, an actual or at least assumed noise development is reduced. In summary, the change in the comfort position takes place in such a way that the noise development is actually, or at least assumed, reduced in the changed comfort position. The comfort position depends on the size that characterizes the noise development. If the characteristic variable is consequently changed, the comfort position is also changed. For example, an essentially immediate adjustment takes place if the characteristic variable changes. As an alternative to this, this takes place only in certain time segments or when the characteristic variable has changed by more than a certain limit value. Consequently, the window pane is only moved infrequently, which increases comfort.

Due to the method, there is an exchange of air in the passenger compartment so that outside air can enter and exit the passenger compartment. In this case, a subjective impression of ventilation is realized for the user of the motor vehicle. Due to the change in the comfort position as a function of the variable characterizing the development of noise, the development of noise within the passenger compartment is reduced or at least limited, so that a conversation is still possible within the passenger compartment. Readjustment of the window pane by the user is also not necessary, which is why convenience is further increased. In addition, it is not necessary to pay close attention to the electric window regulator so that the user can concentrate on the surroundings of the motor vehicle. Consequently, security is increased.

For example, the comfort position, which is moved to directly after the request by means of the window pane, is constantly specified or has already been determined as a function of the variable characterizing the noise development. Preferably, regardless of whether the window pane is in the open, closed or some other position before the request, when the request is detected, the window pane is moved essentially immediately into the comfort position. In a further alternative, for example, directly after the request, at least when this is created from outside the motor vehicle, the window pane is moved into the fully open position so that a comparatively strong exchange of air with the passenger compartment is made possible. In particular, it is ensured here that the motor vehicle is at a standstill. If the motor vehicle is moved, for example an ignition or an engine is operated, and / or a driving speed deviates from 0 km / h, on the other hand, the window pane is moved to the comfort position. Thus, although the transfer takes place as a function of the request, it only occurs when an additional condition exists, namely that the motor vehicle is moved, for example. Thus, even with a comparatively strongly heated passenger compartment, if a corresponding request, such as a user input, is generated from outside the motor vehicle, a comparatively quick exchange of air with the passenger compartment is initially made possible so that the user can get into the passenger compartment. As soon as the user then sets the motor vehicle in motion, the window pane is brought to the comfort position, which is at least partially closed. A further actuation or an additional user input / request is not required, which improves convenience.

For example, the request to adjust the window pane is created by means of an assistance system or another control device. In this case, the assistance system / control device is used in particular to analyze air inside the motor vehicle, preferably in an interior space of the motor vehicle, such as a passenger cell. A suitable sensor is expediently used for this purpose. For example, the request is created when a temperature of the air exceeds a limit value, a temperature sensor being expediently used as the sensor. Alternatively or in combination, the request is created if the air humidity exceeds a certain value. This is detected in particular by means of a sensor, by means of which, for example, the transparency of a pane is checked. In a further alternative, the request is created if the air exceeds a certain proportion of suspended particles, or if a cigarette lighter is activated or put into a state for use.

Particularly preferably, however, a user input is used as a request. The user input is created in particular by means of a user interface, such as a switch or a touchpad, which is arranged, for example, in the area of a center console of the motor vehicle. As an alternative to this, the user input is recorded by means of a further sensor element within a passenger compartment of the motor vehicle, by means of which an actuation by the user or a gesture carried out by the user is recorded. The gesture is detected in particular by means of a suitable sensor, for example an optical or capacitive sensor. In particular, the sensor is installed in the area of a door or a door module of the motor vehicle. In a further alternative, the user input is created by means of a mobile device, such as a radio key, a radio telephone or another mobile terminal device. The user input is preferably recorded by means of a suitable receiver in the motor vehicle.

For example, electromotive window lifters comprise a corresponding input device for user input, that is to say for example the user interface, the sensor, or any mobile terminal device. Appropriately, however, the user input recorded by means of the user interface, the receiver or another sensor is fed into the bus system of the motor vehicle and thus transmitted to the electric window regulator so that it can be recorded by means of the electric window regulator.

For example, the vehicle speed is used as a characteristic variable for the development of noise. The comfort position is thus changed as a function of the vehicle speed. For example, the noise development is stored in a table as a function of the vehicle speed or is determined by means of a model or some other calculation rule. Particularly preferably, however, only the comfort position is determined as a function of the vehicle speed, which reduces the computational effort. At an increased vehicle speed, an air flow that flows in and / or out through the window opening is increased, so that the development of noise increases. Thus, the comfort position is preferably shifted further in the direction of the fully closed position as the vehicle speed increases. In this case, for example, when a certain vehicle speed is exceeded, the window pane is opened again so that the comfort position is not continuously increased as a function of the vehicle speed. In this way, any resonances or the like are dealt with, for example, so that the noise development does not increase excessively even at a comparatively high vehicle speed.

In an alternative embodiment, the noise development is measured directly, for example, and the noise development itself is therefore used as a characteristic variable. For this purpose, a sensor is suitably used, which is expediently arranged within a passenger compartment. Due to the direct measurement of the noise development, it is possible to deal with the current driving situation, which cannot, or only with difficulty, be mapped using a theoretical model. In this way, comfort is also increased in unforeseen driving situations due to the direct knowledge of the noise development and the appropriate change in the comfort position. For example, the sensor is located in the vicinity of a head of a user, for example on a headliner. The noise development in the vicinity of the user is thus determined, which increases reliability. The sensor is particularly preferably a component of a door control device or some other control device for the electromotive window lifter. Thus, no comparatively cumbersome assembly and / or wiring is required, which reduces manufacturing costs. The susceptibility to errors is also reduced.

For example, the sensor is an acoustic / electrical converter such as a microphone. In this way, any noises are measured directly using the sensor. In an alternative to this, a vibration of the window pane is detected by means of the sensor. This means that there is no interference due to background noise, such as the operation of a radio, for example. Appropriately is the Sensor coupled to the window pane, for example mechanically. In particular, the sensor is designed as an acceleration sensor or a piezo sensor. A signal is preferably generated as a function of an oscillation of the window pane, that is to say its oscillation, the signal being suitably proportional to the amplitude of the oscillation and / or the frequency. An increased amplitude corresponds to an increased development of noise, so that when this exceeds a limit value in particular, the comfort position is changed.

Alternatively or in combination with this, the comfort position is adapted in such a way that the frequencies of the oscillation are brought out of a range that is no longer perceptible to the human ear. Thus, sound waves are still present due to the oscillation of the window pane, but these are not perceived by the user, or only perceived to a comparatively small extent. In a further alternative, the sensor is, for example, an acoustic sensor and also serves to record the vibrations of the window pane. In other words, the sensor is in particular a microphone which is expediently arranged in the area of the window pane. Thus, by means of the sensor, it is not the noise development caused by the possible air flow but rather the influencing of the air flow and / or the formation of sound waves caused by an oscillation of the window pane. In this case, a connection of the sensor in the area of a door control module is still possible, which simplifies production.

For example, each time the characteristic variable changes, the comfort position is changed. For example, this is changed iteratively and / or by means of an optimization algorithm so that the noise development is comparatively low or reaches a minimum. However, it is particularly preferable for the comfort position to be changed on the basis of a characteristic curve. The characteristic curve is suitably determined on a test stand and stored in the motorized window regulator during manufacture. The characteristic is stored, for example, in the motorized window lifter. In particular, the characteristic curve indicates by how much the comfort position is to be changed in the event of a change in the variable characterizing the development of noise. It is at least assumed here that when the comfort position is changed, the resulting noise development is again comparatively low. For example, the steps by which the change takes place are constant or, particularly preferably, matched to the respective noise development or the characteristic variable. The window pane is therefore essentially only adjusted at certain discrete points in time, so that an appealing visual impression is achieved for the user.

Alternatively, the change in the comfort position is calculated using a model. Because of the use of the model, no memory is required. In particular, the comfort position is changed by means of a constant step size, or the step size is selected as a function of the characteristic variable or the development of noise. At least the change takes place on the basis of the model in such a way that the actual or at least assumed noise development is below a certain value. In particular, the model is fixed. Alternatively, for example, the model is adapted dynamically. An “artificial intelligence” algorithm is preferably used for this.

The window lifter arrangement is part of a motor vehicle and has a first electromotive window lifter and a second electromotive window lifter. The first electromotive window lifter has a window pane driven by means of an electric motor, and the second electromotive window lifter comprises a window pane driven by means of an electric motor. For example, the first electromotive window lifter and the second electromotive window lifter differ. However, at least the electric motors are particularly preferably structurally identical, the window panes expediently being adapted to the respective installation location of the motor vehicle. Suitably, the first electromotive window lifter and the second electromotive window lifter are preferably structurally identical to one another, with the exception of the window panes, or these are in particular structurally identical to one another. For example, the window pane is arranged in the area of a driver's seat and the further window pane is arranged in the area of a passenger seat or a back seat.

The window lifter arrangement is operated according to a method in which a request to adjust the window panes is detected, in particular also referred to below as a request. The window pane of the first electromotive window lifter is then brought into a first comfort position, and the window pane of the second electromotive window lifter is brought into a second comfort position. The first comfort position is changed as a function of a vehicle speed, and the second comfort position is changed as a function of noise development, which is measured by means of a sensor. In particular, the window panes are moved to the respectively assigned comfort position if a change occurs.

In this way, the two electric motorized window lifters are activated and their respective window panes are brought into the comfort position by means of a single request. However, it is not necessary to actuate or request the individual electric window lifters. A coordinated movement of the two window panes also takes place, the window pane of the second electromotive window lifter being adapted to the actual noise development and the window pane of the first electromotive window lifter thus being used as a reference. The window pane of the first electromotive window regulator was moved in accordance with the vehicle speed, and the comfort position is determined, for example, using a model or a map. The comfort position of the window pane of the first electromotive window lifter determined in this way is preferably adapted to a comparatively low noise level and determined, for example, on a test stand. The current driving situation is taken into account by means of the second motorized window regulator, so that a dynamic adjustment takes place. There is only a single sensor here, which is why hardware costs are comparatively low.

The window regulator arrangement expediently comprises several such electromotive window regulators. In particular, all window lifters of the motor vehicle are designed as electric motorized window lifters and are accordingly part of the window lift system. In this case, when the request is detected, in particular each window pane of each of the electromotive window lifters is brought into a correspondingly assigned comfort position. Expediently, the respective comfort position is determined as a function of the vehicle speed for all electromotive window regulators with the exception of one. This means that the window panes can be moved in a comparatively time-saving manner. With the remaining electromotive window lifter, the comfort position is expediently changed as a function of the noise development, which is measured by means of the sensor. In summary, with the exception of one, all electromotive window lifters are designed as the first electromotive window lifter, and the window lifter arrangement comprises only a single second electromotive window lifter. In an alternative, for example, several first electromotive window regulators and several second electromotive window regulators are present, or there are only a single first electromotive window regulator and several second electromotive window regulators.

The electromotive window lifter is part of a motor vehicle and has a window pane driven by an electric motor. The electromotive window lifter is operated according to a method in which a request to adjust the window pane is detected and the window pane is brought into a comfort position. The comfort position is changed as a function of a quantity characterizing a noise development. The comfort position is expediently located between the fully open position of the window pane and the fully closed position of the window pane. The electromotive window lifter preferably comprises a control unit which is suitable, in particular provided and set up, to carry out the method. For this purpose, the control unit is, for example, coupled to the electric motor for signaling purposes and / or is used to energize the electric motor. The electromotive window lifter preferably comprises an input device for detecting a user input or at least one interface which, in the assembled state, is coupled to the input device for signaling purposes. The user input is preferably used as the request.

The invention further relates to a motor vehicle with such an electromotive window regulator or a window regulator arrangement which is operated according to the method described above.

The further developments and advantages carried out in connection with the individual methods can also be applied analogously to the electromotive window lifters and to each other and vice versa.

• 1 schematisch ein Kraftfahrzeug mit einer Fensterheberanordnung, die zwei elektromotorische Fensterheber umfasst, und
• 2 ein Verfahren zum Betrieb der Fensterheberanordnung.

An exemplary embodiment of the invention is explained in more detail below with reference to a drawing. Show in it:

• 1 schematically a motor vehicle with a window regulator arrangement which comprises two electric motor-driven window regulators, and
• 2 a method of operating the window regulator assembly.

Corresponding parts are provided with the same reference symbols in all figures.

In 1 is schematically simplified a motor vehicle 2 with a number of wheels 4th shown, by means of which contact is made with a street not shown in detail. The car 2 has a window regulator assembly 6th with a first electric window regulator 8th and a second motorized window regulator 10 on. The first electric window regulator 8th is a driver's door assigned and has an electric motor 12th on, by means of which a window pane 14th is driven. Here it is possible to use the window pane 14th by means of a guide, not shown, between a fully closed position 16 and a fully open position 18th by means of the electric motor 12th to spend. The first motorized window regulator 8th further comprises a control unit 20th , by means of which the electric motor 12th is energized so that the window pane 14th is proceeded accordingly. The control unit 20th is with a bus system 22nd of the motor vehicle 2 coupled with signal technology. Consequently it is possible by means of the control unit 20th via the bus system 22nd to receive transmitted commands or the like as well as any messages via the bus system 22nd to send.

The second electric window regulator 10 is a back seat of the motor vehicle 2 assigned and also has an electric motor 24 on, by means of which a window pane 26th is driven. The second motorized window regulator also has 10 a control unit 28 on, which are also signaling with the bus system 22nd connected is. Consequently, it is also possible by means of the electric motor 24 the window glass 26th between the fully closed position 16 as well as the fully open position 18th to spend. Except for the geometric shape of the window panes 14th , 26th are the two electric window regulators 8th , 10 identical to each other.

In addition, the motor vehicle 2 a first input device 30th in the form of a switch. The first input device 30th is on a not shown driver's door of the motor vehicle 2 attached. The car 2 further comprises a second input device 32 in the form of a touchpad attached to a center console. Both the first input device and the second input device 30th , 32 are signaling with the bus system 22nd coupled and connected to this.

The window regulator arrangement 6th and thus also the electric window regulator 8th as well as the second electric window regulator 10 , are according to an in 2 presented procedure 34 operated. The procedure 34 is at least partially by means of the two control units 20th , 28 carried out. In a first step 36 is made by means of the two control units 20th , 28 a request 38 for adjusting the window panes 14th , 26th recorded in the form of a user input. The user input 38 has been created by a user not shown in detail by actuating the first or second input device 30,3 2. From the input device 30th , 32 is the prompt / user input 38 by means of the bus system 22nd to the control units 20th , 28 transmitted and thus received. In a further alternative, not shown in detail, the user input is created 38 by means of a radio key or a mobile terminal and becomes wireless to the motor vehicle 2 transfer. There it becomes the user input 38 comprehensive signal received by means of a receiver, not shown, and also in the bus system 22nd fed in. In a further alternative, not shown, the request is created by means of a further assistance system or some other control unit. This is used in the motor vehicle 2 analyzed air and compared with certain specifications. If the air does not meet certain requirements, the request is made in particular 38 created. A sensor is used to check the air, by means of which the air quality is monitored. Here, for example, the CO2 content of the air is analyzed, or a proportion of suspended particles. In a further alternative, air humidity is monitored by means of the sensor. Alternatively, a temperature sensor is used as the sensor and the request 38 is created when the temperature exceeds a certain value. In another alternative, the request 38 created when, for example, a cigarette lighter is activated, or at least put into a state of use.

The request 38 corresponds to a wish, especially of the user, for comfort ventilation. In this context, comfort ventilation means, in particular, enabling air to be exchanged from the passenger compartment to the surroundings, with excessive noise development and excessive turbulence being avoided.

In a second step 40 becomes the window pane 14th of the first electric window regulator 8th by means of its electric motor 12th to a first comfort position 42 spent moving between the fully closed and fully open positions 16 , 18th is located. In particular, this is between the upper edge of the window pane 14th and an upper edge of the window opening on which the window panes 14th in the fully closed position 16 is applied, a gap is formed which is between 4 cm and 1 cm or, for example, between 3 cm and 2 cm. The energization of the electric motor 12th of the first electric window regulator 6th takes place by means of the control unit 20th .

Furthermore, the window pane is essentially at the same time 26th of the second electromotive window regulator 10 in a second comfort position 44 spent. Also the second comfort position 44 is between the fully closed and fully open positions 16 , 18th , and there, too, there is only a comparatively small gap in particular. The shipment also takes place here the window pane 6th by means of the electric motor 24 of the second electromotive window regulator 10 , the electric motor 24 by means of the control unit 28 of the second electromotive window regulator 10 suitable is controlled.

In a subsequent third step 46 becomes the first comfort position 42 changed as a function of a quantity characterizing a noise development. A vehicle speed is used as the characteristic variable for the development of noise. In summary, the first comfort position 42 depending on the speed of the motor vehicle 2 changed. If consequently the motor vehicle 2 is accelerated and / or decelerated, the first comfort position 42 changed. As soon as the first comfort position 42 changed, the window pane 14th of the first electric window regulator 8th into the correspondingly changed first comfort position 42 proceed.

This is the first comfort position 42 during the acceleration of the motor vehicle mainly in the direction of the closed position 16 offset so that air intake is reduced. Thus becomes the window pane 14th further stabilized, which is why the formation of vibrations is avoided. Due to the displacement of the window pane 14th to the changed first comfort position 42 the disc preload against a possible seal also changes, so that the noise level and therefore also the noise development are reduced. On the other hand, when the speed of the motor vehicle is reduced 2 the first comfort position 42 towards the open position 18th offset.

To determine the first comfort position 42 A characteristic curve is created as a function of the vehicle speed 48 are used, by means of which certain speed ranges each a certain first comfort position 42 assigned. If the vehicle speed thus changes between two of the speed ranges, the first comfort position also becomes 42 changed accordingly, the extent of the change also based on the characteristic 48 is determined, which is designed in particular as a map. The characteristic 48 is in the control unit 20th of the first electric window regulator 8th deposited, which thus has a suitable memory. Alternatively to this is the control unit 20th connected to such a memory for signaling purposes. For example, the second electromotive window regulator 10 the memory on, or just the first electric window regulator 8th .

In a subsequent fourth step 50 after completing the third step 46 is carried out, the second comfort position becomes 44 also changed as a function of a variable characterizing the development of noise. Due to the changed first comfort position 42 The noise generation inside a passenger compartment of the motor vehicle also changed 2 . in contrast to the first electric window regulator 8th is used for the second electric window regulator 10 however, the noise generated by means of a sensor 52 measured. The sensor 52 is for signaling with the control unit 28 coupled and mechanically with the window pane 26th of the second electromotive window regulator 10 connected. The sensor 52 is for example on the control unit 28 attached or partially formed by means of this.

During operation, the sensor 52 , which is designed as an acceleration sensor, a vibration of the window pane 26th of the second electromotive window regulator 10 detected. Due to the changed first comfort position 42 there is also a change in the vibration of the window pane 26th . The means of the sensor 52 detected vibration is by means of the control unit 28 of the second electromotive window regulator 10 analyzed, in particular their amplitude and frequency. The second comfort position is then created using a model 44 changed. As an alternative to using the model, a characteristic curve or an “artificial intelligence” algorithm is used, for example, in which the second comfort position is determined 44 especially based on the vibration of the window pane 26th is determined.

Due to the change in the second comfort position 44 there is a damping of the amplitude of the oscillation and / or a shift in the frequency of the oscillation so that it can no longer be perceived by a human ear. As a result, the motor vehicle is also in operation 2 allows air to be exchanged through the window openings, with excessive noise being avoided. This involves readjustment by a user of the motor vehicle 2 not mandatory. After completing the fourth step 50 becomes the third step again 46 executed. The procedure 34 is ended, for example, by means of a further user input or when the motor vehicle 2 is stopped.

In a further alternative, after the user input 38 if this is outside the vehicle 2 was created the window panes 14th , 26th each in the fully open position 18th spent. The second step 40 is only executed when the motor vehicle 2 is set in motion. Thus, ventilation of the passenger compartment is improved. In summary are the comfort positions 42 , 44 in particular selected in such a way that a noise level is minimal, that is to say that noise development reaches a minimum. It should nevertheless be possible for air to pass through the window openings. In other words, a constraint is that the window panes 14th , 26th not in the fully closed position 16 are located.

The invention is not restricted to the exemplary embodiment described above. Rather, other variants of the invention can also be derived from this by the person skilled in the art without departing from the subject matter of the invention. In particular, all of the individual features described in connection with the exemplary embodiment can also be combined with one another in other ways without departing from the subject matter of the invention.

List of reference symbols

2

Motor vehicle

4th

wheel

6th

Window regulator arrangement

8th

first electromotive window regulator

10

second electromotive window regulator

12

Electric motor

14th

Window pane

16

fully closed position

18th

fully open position

20th

Control unit

22nd

Bus system

24

Electric motor

26th

Window pane

28

Control unit

30th

first input device

32

second input device

34

Procedure

36

first step

38

request

40

second step

42

first comfort position

44

second comfort position

46

third step

48

curve

50

fourth step

52

sensor

Claims (9)

Method (34) for operating an electromotive window regulator (8, 10) of a motor vehicle (2), in which - a request (38) to adjust a window pane (14, 26) is detected, - The window pane (14, 26) is brought into a comfort position (42, 44), and - The comfort position (42, 44) is changed as a function of a quantity characterizing a noise development. Method (34) according to Claim 1 , characterized in that the request (38) to adjust the window pane (14, 16) a user input is used. Method (34) according to Claim 1 or 2 , characterized in that a vehicle speed is used as a characteristic variable for the development of noise. Method (34) according to Claim 1 or 2 , characterized in that the noise development is measured by means of a sensor (52). Method (34) according to Claim 4 , characterized in that an oscillation of the window pane (26) is detected by means of the sensor (52). Method (34) according to one of the Claims 1 to 5 , characterized in that the change in the comfort position (42, 44) is determined using a characteristic curve (48). Method (34) according to one of the Claims 1 to 5 , characterized in that the change in the comfort position (42, 44) is calculated using a model. Method (34) for operating a window regulator arrangement (6) of a motor vehicle (2), having a first electromotive window regulator (8) and a second electromotive window regulator (10), in which - a request (38) to adjust window panes (14, 26) is detected, - the window pane (14) of the first electromotive window lifter (8) is brought into a first comfort position (42), - The window pane (26) of the second electromotive window regulator (10) is brought into a second comfort position (44), - The first comfort position (42) is changed as a function of a vehicle speed, and - The second comfort position (44) is changed as a function of noise development, which is measured by means of a sensor (52). Electromotive window lifter (8, 10) of a motor vehicle (2), with a window pane (14, 26) driven by means of an electric motor (12, 24), and with a control unit (20, 28) which is provided and set up, a method ( 34) according to one of the Claims 1 to 7th perform.

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