DE102009006121A1 - Upgrading kit for upgrading motor vehicle to hybrid vehicle, has control circuit adjusting electrical power for supply to electric machine, where power is stored in energy storage, drawn through conversion and provided at energy connection - Google Patents

Abstract

The kit (10) has an electric machine (16) i.e. wheel hub machine, for driving a wheel (36) of a motor vehicle (14). An integrated energy storage and control module (18) includes an energy storage (20) to store electrical energy. A transducer (22) converts the stored energy into a form that is suitable for supply to the machine. The module is coupled to the machine via an energy connection (26). A control circuit (24) adjusts electrical power for supply to the machine, where the power is stored in the energy storage, drawn through conversion by the transducer and provided at the connection. An independent claim is also included for a method for upgrading motor vehicle provided with an electric drive and operated by an internal combustion motor vehicle.

Description

The The present invention relates to the upgrade of a operated with an internal combustion engine motor vehicle with a Electric drive, such as in the context of an upgrade of a Internal combustion engine-powered vehicle to a hybrid vehicle.

The Addition of an internal combustion engine to an electric Drive unit - also called hybridization - offers in motor vehicles considerable potential for consumption reduction and to increase the driving dynamics. Electric machines belong to the few known converters, the energy - here mechanical or electrical energy - in both directions with high Efficiency can change. This makes it possible To transform braking energy back into electrical energy what is called recuperation, then this at subsequent To be able to use acceleration processes again, which process is also called boosting.

A variety of different hybridization solutions are known. However, most require significant intervention in the powertrain of the vehicles and are therefore only suitable for upgrading or upgrading "ex works". In the DE 10 2005 041 634 A1 a retrofit kit is described in which the electrical machine from its mechanical energy from the vehicle generator or the alternator driving shaft, ie the crankshaft of the internal combustion engine, or receives in mechanical operation, mechanical energy in this wave. The retrofit kit consists of various individual systems, such. As the electric motor, the energy storage and a control unit, just to name a few. These individual systems are housed in different locations in the vehicle. Overall, this creates a significant cabling and installation costs.

The The object of the present invention is to provide an upgrade kit and a method of upgrading one with an internal combustion engine operated motor vehicle to create an electric drive, so that such an upgrade, such. B. for the purpose of Consumption reduction and / or increasing the driving pleasure and the driving safety, is less expensive, d. H. cost-effective and / or less expensive in terms of installation, and / or safer is against misconstructions.

These Task is achieved by an upgrade kit according to claim 1 and a method according to claim 12 solved.

One The core idea of the present invention is that an upgrade a powered by an internal combustion engine motor vehicle with an electric drive less expensive and / or safer against incorrect installation can be designed when energy storage and converter in one Housed housing and thus to an integrated energy storage module be summarized. The summary will reduce the cabling effort enormously reduced within the vehicle to be upgraded. This applies in particular to all cabling routes, the high electrical Have to transport power and thus high costs per cause running meter. Only the distance between the electric machine and the integrated energy storage module is to be bridged. The low cabling effort suggests of course also in a lower upgrade time down, thereby reducing conversion and cabling become.

According to one Embodiment will also be the control circuit in the Housed housing, so that an energy storage and control module yields. This allows additional Advantages. For example, on a data interface between Housing and control circuit are omitted, which the Cabling and installation costs further reduced.

The Integration of energy storage and converter in a module allows in addition a subsequent upgrade, d. H. Retrofitting, internal combustion engine-powered motor vehicles with a hybrid drive on a simple modular principle, what in turn reduces the upgrade costs. In principle, that is Retrofit is not limited to any specific vehicle. Rather, the customer is in the choice of the base model of the retrofit Motor vehicle free.

According to one Embodiment of the present invention is located the wheel to be driven by the electric machine at a not by the internal combustion engine of the motor vehicle to be upgraded driven axis. As a result, no mechanical interference in the basic drive, which comprises the internal combustion engine and the drive train, required.

In addition, it is possible to optimize the upgrade kit for installation and assembly errors through the integration of energy storage and converter in a module, since fewer components must be combined. In addition, the housing can be formed so that it can be fitted precisely into the trunk floor of a particular motor vehicle, for which the upgrade kit is provided. In other vehicles with a different boot floor of the upgrade kit is not fit precisely installed and thus it is ensured that the control circuit on the drive tool type is matched.

According to one Another embodiment in which the module additionally however, if the control circuit comprises the module, the module is different Motor vehicles customizable. This, however, a mismatch when upgrading a motor vehicle can be almost excluded, it can hen vorgese be that for the housing of the integrated energy storage and control module a set of motor vehicle-specific Einpassgehäusen provided is so different in their outer circumference, so that no motor vehicle-specific Einpassgehäuse Außenumfangsmäßig in one of the other is inscribed, and in which the case the upgrade kit is accurately fit, the control circuit the fitting housing into which the housing of the energy storage and control module is fitted, interrogates and accordingly surrounded.

preferred Embodiments of the present invention will be with reference to the accompanying drawings explained. Show it:

1 a block diagram of an upgrade kit according to a first embodiment;

2 a block diagram of an upgrade kit according to another embodiment;

3 a schematic space image of an integrated energy storage and control module and a fitting housing according to an embodiment; and

4 a flowchart of an upgrade method according to an embodiment.

1 shows an embodiment of an upgrade kit 10 for one with an internal combustion engine 12 operated motor vehicle 14 with an electric drive to a hybrid vehicle. The upgrade kit includes at least one electric machine 16 as well as an integrated energy storage and control module 18 , The integrated energy storage and control module 18 includes a housing (in 1 not shown), in which an energy storage 20 , a converter 22 and a control circuit 24 are housed. The integrated energy storage and control module 18 includes an energy connection 26 , via which the integrated energy storage and control module 18 via a suitable cable 28 with the electric machine (s) 16 can be coupled. Internal is the energy storage 20 over the converter 22 with the power connection 26 coupled, so that at the power connector 26 one from the in the energy storage 20 stored and by conversion by the converter 22 referenced energy provided electrical power can be tapped. The control circuit 24 is with the converter 22 coupled to a controller of the converter 22 the at the power connection 26 set the power provided, such. B. on and off or quantitatively in terms of the amount of power provided.

The integrated energy storage and control module 18 also includes an interface 30 for incoming signals from the motor vehicle 14 , the information about driving maneuver wishes of a driver of the motor vehicle 14 give. The control circuit 24 is with the interface 30 coupled to make the adjustment of the power provided to the power connector dependent on the signals present at the interface 30 received. the interface 30 may for example be a passive input interface, such. B. an interface with an input resistance greater than 10 kΩ, so that the interface 30 with an internal control bus of the motor vehicle 14 can be coupled without significantly affecting the signals transmitted on the bus. This internal bus of the motor vehicle 14 For example, a data bus, such. As a CAN bus.

As will be discussed later, the upgrade kit 10 possibly also one or more donors 32 have, the or a position of the gas pedal 34 ₂ and / or brake pedals 34 ₁ of the motor vehicle 14 into a signal and to the interface 30 forwards / s.

The upgrade kit 10 thus corresponds to a kind of hybrid kit for hybridizing the motor vehicle 14 , Although it has been mentioned above that the upgrade kit 10 only an electric machine 16 of course, it may of course also comprise two or more electrical machines, wherein 1 two are indicated by way of example. The electric machine 16 can be used as an electric wheel hub motor for attachment to a wheel hub 35 of the motor vehicle 14 be executed. The version as a hub motor allows a particularly simple upgrade of the motor vehicle 14 because the wheel hub 35 is easily accessible.

It is also beneficial if the wheel hub 35 to a wheel 36 of the motor vehicle 14 that does not belong to the internal combustion engine 12 is driven, but with the latter just across the street 38 is mechanically coupled. In 1 it is merely assumed by way of example that it is the motor vehicle 14 is a front-wheel drive vehicle, so that the wheel 36 located at the rear axle. A motor vehicle 14 with rear-wheel drive is of course also possible. Additionally, it would be possible for the electric machine 16 in the combustion engine 12 driven powertrain is to be installed.

The electric machine 16 may be a DC motor or an asynchronous or synchronous AC motor. The converter 22 fits in the energy store 20 provided form of energy according to the electrical energy form, the operation of the electric machine 16 is needed. The converter 22 can therefore in particular as a converter for the operation of the electrical machine 16 act, such. B. as a frequency converter. The electric machine 16 can also be designed so that it is not only able to do so in a motorized operation, by the at the power connection 26 provided electric power a torque on the wheel 36 off and thus, for example, a load point reduction for the internal combustion engine 12 but also in a generator operating mode in which the electric machine 16 mechanical energy from the rotation of the wheel 36 converted into electrical energy, which then passes through the inverter 22 for charging the energy storage 20 can be used, the latter being designed rechargeable in this case.

The energy storage 20 can be any electrical energy storage. Preferably, it is rechargeable. For example, it is a lithium-ion battery. The control circuit 24 For example, it decides depending on the signals at the interface 30 about whether the electric machine 16 in the engine operation or to put the generator operation, wherein in the latter operating case, a load point increase for the internal combustion engine 12 can be resulted.

The integrated energy storage and control module 18 is preferably geometrically designed so that it is in a trunk floor 40 or below a rear seat 41 or in a cavity flu or a cavity floor (not shown) of the convertible motor vehicle 14 can be accommodated. In particular, to the housing of the module 18 even form-fitting with the free volume of the boot floor 40 be formed or else it can, as it is in 3 shown is the upgrade kit 10 a motor vehicle-specific fitting housing 42 have, the outer periphery in the trunk floor 40 of the motor vehicle 14 is customizable and that a recess 44 in which in turn the housing 46 of the integrated energy storage and control module 18 is customizable.

In particular, so in front-powered base vehicles such. B. the in 1 shown vehicle 14 , one electric machine each 16 in the form of a hub motor on the rear wheels 36 be mounted while beispielswei se the integrated energy storage and control module 18 very close to it in the rear, namely, for example, in the trunk floor 40 , is housed, so that in particular provided for the transport of high electrical power cable 28 between electric machine 16 and module 18 can be kept very short.

As already mentioned, takes place in the installed state on the road 38 a mechanical coupling between the internal combustion engine driven wheels 48 and the electrically driven wheels 36 , With this arrangement, both a brake energy recovery and an acceleration assistance (boost operation) by means of the electric machine 16 possible or a load point increase and / or decrease of the internal combustion engine 12 to optimize their operation or a temporary four-wheel drive - at least as long as the energy supply in the energy storage 20 is available - or a Berghalte- and Anfahrunterstützung by means of the electric machine 16 or even a driving stabilization by wheel-individual control of the torques on the left and right located electrical machines 16 ,

The decision on whether the electric machine 16 a torque to the respective wheel 36 applies, torque remains invariant or even from the rotational energy of electrical energy to power the electrical energy storage 20 removes, decides the control circuit 24 , For example, the control circuit uses 24 to the signals at the entrance 30 , Additionally or alternatively, the control circuit 24 Use gyroscope information from the electrical machine 16 receives, which in turn uses this for commutation. The rotation rate information provides information about the driving speed of the motor vehicle 14 , This is true even if the electric machine 16 in the drive train of the internal combustion engine 12 is accommodated, as long as the electric machine between the driven wheel and transmission (not shown) of the motor vehicle 14 attached vehicle 14 is arranged. The control circuit 24 For example, due to an acceleration request, the driver via the accelerator pedal 34 ₂ indicating and the the control circuit 24 via the signals at the interface 30 learns and the speed information from the electric machine 16 decide whether there is a starting maneuver that suggests a boost operation, there is a driving state in which the internal combustion engine 12 is operated in an unfavorably low load point, which is a load point increase or a generator operation of the electric machine 16 suggests, and depending on the memory state of the energy storage 20 that cause suggested modes or not. Conversely, the control circuit 24 from the brake request information at the interface 30 the driver over the brake pedal 34 ₁ enters, possibly with the addition of speed information from the electric machine 16 decide on the implementation of brake energy recovery, hill hold and starting assistance.

The wiring effort is thus reduced accordingly 1 on the line 28 between electric machine 16 and module 18 and optionally communication links between the interface 30 and for example, an in-vehicle control (not shown) or a previously mentioned encoder 32 for independent recording of the pedal position. Another, in 1 not shown connection, for example, between electric machine 16 and the module 18 be provided to the aforementioned rotation rate information from the electric machine 16 to the module 18 and there, for example, the inverter 22 and the control circuit 24 pass. However, it would also be conceivable that none of the above-mentioned additional communication links is present, but the controller 24 Rate of rotation or velocity information from the electrical conditions at the high performance link 28 to the electric machine 16 determined, in which case, for example, the converter takes over the commutation tasks.

The just described integration of the converter 22 , such as B. one or more inverters, the electrical energy storage 20 and the control circuit 24 into a unit or a module 18 allows a drastic cost reduction by eliminating expensive high-voltage cables and connectors between energy storage 20 and converters 22 , EMC filter components between the same and single housings for these components. During upgrade, these components can be handled together in the module.

2 shows an upgrade kit according to another embodiment. In this embodiment, the module comprises 18 additionally an AC / DC converter 50 holding a store of electrical energy storage 20 via an appropriate interface 52 of the module 18 on a public power grid 55 , in Germany, for example, on a 230 V AC mains, enabled. Additionally or alternatively, the module 18 a DC / DC converter 54 which is capable of the 12 V electrical system 56 of the motor vehicle 14 to provide or support.

It should be noted that the module 18 either air-cooled or liquid-cooled. Air cooling is for a pure hybrid drive of the motor vehicle 14 to prefer, while upgrading kit variants with higher capacity of the electric energy storage 20 and thus the ability to drive limited distances of, for example, 10 to 50 km also purely electric, such. In the case of a plug-in hybrid, for example, liquid cooling may be preferred.

Referring to 3 is again pointed out the possibility that the housing 46 of the module 18 intended to be in a fitting housing 42 to be fitted, which in turn is designed vehicle-specific in its outer shape to exactly in the trunk floor 40 to fit the desired motor vehicle, for the control circuit 24 in the module 18 has just been aligned. The module 18 could then also with one or more other fitting housing (s) 42 ' be combined. Each fitting housing 42 and 42 ' would have the recess 44 into the case 46 is customizable. However, due to the outer peripheral shape of the fitting housing 42 ' and 42 ensures that no passport fits into the boot floor of another motor vehicle, for which one of the other car-specific Einpassgehäuse is designed. The control circuit could have electrical contacts in the recess 44 or interrogate mechanically outstanding pins, in which fitting housing the module 18 is fitted, so that the control circuit 24 the controller can perform car-specific. Of course, the query of the presence or absence of predetermined pins in the fitting housing would also be possible.

The The above embodiments thus allow an upgrade of a motor vehicle with an internal combustion engine by an electric drive such that preferably not directly driven by the internal combustion engine wheels of a base vehicle with one and / or optionally several electric machines individually electrically driven, the electric drive optionally parallel to the base drive or can act separately and besides over the road is not mechanically coupled to the combustion engine but controlled by a logic circuit and the base drive is synchronized, the energy storage and inverter in a unit or a module or a central unit summarized are. The conversion can then without an intervention in the vehicle structure be performed. The central unit can be air-cooled or be liquid cooled.

It should be noted that the electrical energy store may include, for example, rechargeable battery cells and / or capacitor cells. In addition, the upgrade kits described above may be separately available kits or upgrade kits or the kits as described in 1 and 2 can be shown as original equipment set used for use by the vehicle manufacturer.

It is worth noting that by providing the control circuit 24 in the module 18 the hybrid functionalities not from a proprietary vehicle control device in the motor vehicle 14 must be taken, but from the controller 24 be provided so that retrofitting is significantly simplified.

The above embodiments allow an upgrade in particular such that a brake energy recuperation or recuperation is possible and / or that by means of a control of the electric motors, an increase in driving stability can be achieved. As described, the provision of chargeability on a public power grid is also possible. The control circuit can ensure that to optimize the efficiency of the internal combustion engine 12 the electric machine 16 running in generator mode and thereby optionally generates a braking effect or a load point increase for the internal combustion engine 12 generates, runs without drive influence or provides an additional drive torque in engine operation and thus ensures a load point reduction for the internal combustion engine.

Finally shows 4 another possible upgrade process. The method comprises a step 100 the attachment of an electrical machine to the vehicle to be upgraded. As it is referring to the 1 and 2 has been described, the attachment can be made to a hub, such. B. the wheel hub of a non-driven by the internal combustion engine of the motor vehicle wheel. Other locations are also possible, as has also been mentioned above.

In one step 102 becomes the integrated energy storage and control module 18 housed in the motor vehicle. The accommodation can, as mentioned above, take place in the boot floor. Other places are also possible. If the accommodation in the trunk floor, where usually a spare wheel is housed, so the accommodation can be carried out, for example without loss of luggage or other space losses inside the vehicle. The spare wheel could be replaced by a corresponding tire repair kit.

Finally, also in one step 104 a connection of the power connector of the module 18 provided with the electric machine. The step 104 may also include the laying of the above-mentioned communication links, such. To the interface 30 , Additionally or alternatively, the step 104 also the mounting of additional donors 32 include as mentioned above.

The The above embodiments thus describe a Solution to the problem, even existing ones Vehicles cost-effective and with low installation costs to hybridize, thereby significantly reducing the consumption of the vehicle to reduce or the driving pleasure and driving safety to increase. In this case, the embodiments but of course also at the factory, d. H. at first time Assembly of a motor vehicle, advantageous for reducing the Manufacturing costs are used.

The The above embodiments enable the hybridization by means of a modular hybrid kit, in such a way that, for example, motor vehicle repair shops or conversion companies already in use can upgrade later, without that Substantial interventions in the structure of the vehicle or the conventional drive train would be required. To minimize the wiring and installation costs, passed above embodiments only of a few components, such as B. the integrated module or the central unit and at least an electric machine. The central unit includes all required subsystems, such. B. the drive or the drive, the energy storage, safety devices and advantageously also the control electronics.

In contrast to the embodiments described so far, as can be seen by a dashed and dotted line 110 in 1 and 2 is indicated, the control circuit to be designed as a separate component, ie not housed in the housing or not in the module 18 be integrated, in which case the installation or the housing of the same in the motor vehicle during the upgrade after 4 in an extra step 130 would be done. However, the alternative described above allows an energy storage and control module 18 including the control circuit 24 additional benefits. For example, it is possible to dispense with a data interface between housing and control circuit, which reduces the cabling and installation costs (see step 130 ) further reduced. In addition, the control circuit can access all the information describing the state of the energy storage, such. B. the state of charge, without a compromise between data transmission costs in terms of, for example, amount of data or data rate between control circuit and energy storage would have to be made. The control circuit 24 can use the latter information, for example, to control the electrical Machine even more accurate vote on the state of charge of the energy storage, such. B. taking into account the state of charge of individual battery cells of the energy storage or taking into account the charging history of the energy storage in the case of a battery with "memory effect". In other words, integration of the controller into the energy storage module also allows the integrated controller to gain easier access to all internal information about the battery, all sensors and the electric motors. Compared to this, an "outsourced" control unit for the transmission of all this information requires, for example, an additional processor and a very fast data connection between the energy store and the externalized controller. A controller integrated in the energy storage module also avoids the housing of an additional housing in the vehicle, reduces the cabling effort as already mentioned, increases installation safety due to, for example, a reduced likelihood of confusion with respect to the selection of the control unit to be used with the energy storage module and reduces the number of parts in the "Aufrüstbausatz ", Which in turn means lower logistics and storage costs and reduced installation costs.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 102005041634 A1 [0003]

Claims (17)

Upgrade kit for the upgrade of a vehicle powered by an internal combustion engine ( 14 ) with an electric drive, comprising an electric machine ( 16 ) for the electromotive driving of a wheel ( 36 ) of the motor vehicle ( 14 ); and an integrated energy storage module ( 18 ) with an energy store ( 20 ) for storing electrical energy; a converter ( 22 ) for converting the energy storage ( 20 ) stored energy in one for a power supply of the electric machine ( 18 ) suitable form; and an energy connection ( 26 ) through which the integrated energy storage module ( 18 ) with the electric machine ( 16 ) can be coupled; and a control circuit ( 24 ) for setting a in the energy storage ( 20 ) and by conversion by the converter ( 22 ), at the power connection ( 26 ) provided electrical power for feeding the electric machine ( 16 ). Upgrade kit according to claim 1, in which the control circuit ( 24 ) also into the energy storage module ( 18 ) is integrated. Upgrade kit according to claim 2, wherein the integrated energy storage module ( 18 ) a first interface ( 30 ) for signals from the motor vehicle ( 14 ), the information about driving maneuver wishes of a driver of the motor vehicle ( 14 ), and the control circuit ( 24 ) is adapted to make the adjustment depending on the signals. Upgrade kit according to claim 3, wherein the interface ( 30 ) is a passive input interface. Upgrade kit according to one of claims 2 to 4, wherein the integrated energy storage module ( 18 ) is configured to receive a measurement signal from the electrical machine ( 16 ), which has a rotation rate of the electric machine ( 16 ) to make the adjustment depending on the measurement signal. Upgrade kit according to one of claims 2 to 5, further comprising a set of motor vehicle-specific fitting housings ( 42 . 42 ' ), which differ in their outer circumference in such a way that no motor vehicle-specific passport housing can be inscribed externally in another circumference, and in which the housing ( 46 ) of the upgrade kit can be fitted accurately, the control circuit ( 24 ) is adapted to make the adjustment depending on which motor vehicle-specific Einpassgehäuse the housing ( 46 ) of the integrated energy storage module is fitted. Upgrade kit according to one of claims 1 to 5, wherein the housing ( 46 ) is designed to fit into a trunk floor ( 40 ), under a rear seat ( 41 ) or a cavity floor of the motor vehicle ( 14 ) to be customizable. Upgrade kit according to one of claims 1 to 7, wherein the electric machine ( 16 ) is designed as a wheel hub machine. Upgrade kit according to one of the preceding claims, in which the control circuit ( 24 ) is adapted to make the adjustment so that for optimizing the efficiency of the internal combustion engine ( 12 ) the electric machine ( 16 ) runs in a generator mode and thereby either generates a braking effect or runs along with no drive influence, or provides an additional drive torque in a motor operation. Upgrade kit according to one of the preceding claims, wherein the integrated energy storage module comprises a network interface ( 52 ), via which the energy store ( 20 ) is rechargeable via a public power grid. Upgrade kit according to one of the preceding claims, wherein the electric machine ( 16 ) is adapted to be operable in a motor operation to the wheel of the motor vehicle ( 14 ) and in a generator mode to convert a rotational energy of the wheel into electrical energy, and wherein the control circuit ( 24 ) is adapted to the electric machine ( 16 ) between the engine operation and the generator operation, and the converter ( 23 ) is formed in order to use the energy obtained from the rotational energy of the energy storage ( 20 ) to charge. Method for upgrading a motor vehicle powered by an internal combustion engine with an electric drive, comprising the following steps: mounting an electric machine ( 16 ) to the motor vehicle so that the electric machine ( 16 ) drivingly with a wheel ( 36 ) of the motor vehicle ( 14 ) is coupled; Housing an integrated energy storage module ( 18 ) with an energy store ( 20 ) for storing electrical energy to a transducer ( 22 ) for converting the energy storage ( 20 ) stored energy in one for a power supply of the electric machine ( 16 ) suitable form, and an energy connection ( 26 ) through which the integrated energy storage module ( 18 ) with the electric machine ( 16 ) is coupled, in the motor vehicle ( 14 ); Housing a control circuit ( 24 ) to my put one in the energy store ( 20 ) and by conversion by the converter ( 22 ), at the input terminal ( 26 ) provided electrical power for feeding the electric machine ( 16 ) in the motor vehicle ( 14 ); and connecting the power connector ( 26 ) with the electric machine ( 16 ). Method according to claim 12, wherein the control circuit ( 24 ) also into the energy storage module ( 18 ), so that the step of housing the integrated energy storage module ( 18 ) and the step of housing the control circuit ( 24 ) are carried out simultaneously in one go. A method according to claim 12 or 13, wherein the attaching step is performed so that the wheel driven by the electric machine ( 16 ) is not connected to the internal combustion engine, but only over a road ( 38 ) on which the motor vehicle ( 14 ), with the combustion engine ( 12 ) is mechanically coupled. A method according to any one of claims 12 to 14, wherein the step of attaching is performed so that the wheel passing through the electric machine ( 16 ) is drivable, is arranged on a rear axle of the motor vehicle. Method according to one of Claims 12 to 15, in which the control circuit ( 24 ) also into the energy storage module ( 18 ) and the integrated energy storage module ( 18 ) further comprises a first interface for signals from the motor vehicle ( 14 ), the information about driving maneuver wishes of a driver of the motor vehicle ( 14 ), and the control circuit ( 24 ) is adapted to make the adjustment in dependence on the signals, and wherein the method further comprises the following step: connecting the first interface to a data bus of the motor vehicle ( 14 ); or installing a sensor ( 32 ) for measuring the position of a gas and / or brake pedal ( 34 _1.2 ) of the motor vehicle ( 14 ) and connecting the first interface to the encoder. Method according to one of the claims 12 to 16, which is performed in a factory where the Motor vehicle is assembled for the first time, or as part of a Retrofitting of an already completed motor vehicle.