DE102020210682A1 - Method for displaying aerodynamic information in a vehicle and vehicle with a display device for displaying such information - Google Patents

Abstract

The present invention relates to a method for outputting aerodynamic information in a vehicle, in which data is recorded on at least one variable parameter that influences the aerodynamics of the vehicle environment, and an aerodynamic model of the air flow in the vehicle environment is calculated using the recorded data. The method according to the invention is characterized in that a visualization is generated from the aerodynamic model of the air flow and the visualization is displayed by means of a display device arranged in the vehicle. Furthermore, the invention relates to a corresponding vehicle with a display device for outputting aerodynamic information in the vehicle.

Description

The present invention relates to a method for outputting aerodynamic information in a vehicle. In the method, data on at least one variable parameter that influences the aerodynamics of the vehicle environment is recorded. Furthermore, an aerodynamic model of the air flow in the vehicle environment is calculated using the recorded data. Furthermore, the invention relates to a vehicle with a display device for outputting aerodynamic information in a vehicle. The vehicle has an acquisition unit for acquiring data on at least one variable parameter that influences the aerodynamics of the vehicle environment. Furthermore, the vehicle includes a calculation unit which is designed to calculate an aerodynamic model of the air flow in the vehicle environment using the recorded data.

A vehicle usually has a large number of sensors installed. Using these sensors, it is possible to comprehensively record the condition of the vehicle and the vehicle environment. However, little aerodynamic information is provided to the driver of the vehicle, although the vehicle's drag at higher speeds significantly affects the vehicle's energy consumption.

From the DE 10 2014 200 610 A1 a control unit for a vehicle is known, with which the actual energy consumption of the vehicle can be determined. This is intended to evaluate the driving behavior of the driver, in particular with regard to energy efficiency. Among other things, the flow resistance coefficient of the vehicle or the reference area for an air resistance of the vehicle are also taken into account.

the DE 10 2016 114 967 A1 describes a system and method for displaying at least one performance metric. For this purpose, sensor data is recorded and stored by a large number of vehicle components. Based on the recorded sensor data, the performance index is calculated, sent to a mobile device and displayed there. When calculating the performance index, among other things, the drag coefficient can be taken into account.

The object of the invention is to provide a method and a vehicle of the type mentioned at the outset, with which aerodynamic information is output in the vehicle in such a way that the driver of the vehicle can easily and quickly record the aerodynamic situation in which the vehicle is located .

According to the invention, this object is achieved by a method having the features of claim 1 and a vehicle having the features of claim 12. Advantageous refinements and developments result from the dependent claims.

The method according to the invention is characterized in that a visualization is generated from the aerodynamic model of the air flow and the visualization is displayed by means of a display device arranged in the vehicle.

Advantageously, the driver of the vehicle can very easily and quickly record the aerodynamic situation of the vehicle and the vehicle environment by displaying the visualization of the aerodynamic model of the air flow. Advantageously, this not only makes it clear to the driver what the current air resistance of the vehicle is. Rather, from the visualization of the aerodynamic model, he can also obtain information on which measures he can take to reduce air resistance. As a result, the energy consumption and the CO ₂ emissions of the vehicle can also be reduced.

When calculating the aerodynamic model of the air flow in the vehicle environment, on the one hand unchangeable parameters of the vehicle can be taken into account. These fixed parameters include, at least in part, the geometry of the vehicle's outer shell. Furthermore, this can include parameters that characterize the surface condition of the vehicle's outer shell. These unchanging parameters can be pre-stored as vehicle-related data and taken into account when calculating the aerodynamic model.

On the other hand, variable parameters of the vehicle are also taken into account when calculating the aerodynamic model of the air flow in the vehicle environment. The variable parameters include conditions that can change during the movement of the vehicle, with a change in these variable parameters affecting the aerodynamics of the vehicle's surroundings. According to the invention, not only the unchangeable parameters of the vehicle are taken into account when calculating the aerodynamic model of the air flow, but also data on at least one, in particular several, changeable parameters, which in particular are continuously recorded.

For example, one variable parameter is the air pressure component exerted on the vehicle outer shell in the opposite direction of travel. By detecting this air pressure component, the air resistance of the vehicle can be directly detected without having to take into account separate measurement values for speed or the air flow that is independent of the movement of the vehicle. In this way, the air flow situation of the vehicle can advantageously be detected directly.

Alternatively or additionally, a variable parameter is the wind direction and the wind speed in the vicinity of the vehicle. In this case, the data can be recorded via an interface to a weather service. In this case, in particular the direction of movement and the speed of movement of the vehicle are recorded as variable parameters as further variable parameters, so that the inflow situation of the vehicle can be calculated in the aerodynamic model of the air flow.

In a further embodiment of the method according to the invention, the or one of the variable parameters is, alternatively or additionally, the state of at least one opening in the vehicle outer shell, which can be closed. This opening can be a window, for example, which can be opened and closed. Furthermore, it can be a closable roof opening, such as a sliding roof. An open window or an open sunroof has a major impact on the aerodynamics of the vehicle environment and thus on the air resistance of the vehicle. According to the invention, it is detected in particular whether such an opening is open or closed. Advantageously, it is detected how far the opening is open. This data can be collected using conventional electric window or sunroof openers.

Alternatively or additionally, the or one of the variable parameters can be the information as to whether a roof structure is mounted on the vehicle. Additional information on air resistance or the geometry of the roof structure can also be taken into account. In this case, the data is recorded by storing values stored in a memory of the vehicle, relating in particular to the removable roof structure. Alternatively, a sensor can be provided which detects the installation of a roof structure and possibly the type of roof structure.

In a further development of the method according to the invention, the or one of the variable parameters is the ground clearance of the vehicle as an alternative or in addition. In particular with an adaptive chassis, the ground clearance of the vehicle can be changed while the vehicle is moving. The ground clearance influences the aerodynamics of the vehicle environment, in particular the air resistance of the vehicle. In the method according to the invention, the state of the ground clearance is recorded and taken into account in the calculation of the aerodynamic model of the air flow in the vehicle environment.

In a further development of the method according to the invention, the or one of the variable parameters is the state of a spoiler of the vehicle as an alternative or in addition. The condition of the spoiler influences the aerodynamics of the vehicle surroundings, in particular the vehicle's air resistance. In the method according to the invention, the condition of the spoiler is detected and taken into account when calculating the aerodynamic model of the air flow in the vehicle environment.

According to a development of the method according to the invention, the or one of the variable parameters is, alternatively or additionally, the geometry and/or kinetics of other vehicles in the vehicle environment. Other vehicles in the vehicle environment significantly influence the aerodynamics in the environment of your own vehicle. In the method according to the invention, data on the geometry and/or kinetics of other vehicles in the vehicle environment are taken into account when calculating the aerodynamic model of the air flow in the vehicle environment.

According to one embodiment of the method according to the invention, the vehicle environment includes the direct environment of the vehicle outer shell. The outer shell of the vehicle is formed by surfaces of the vehicle which the ambient air flows against or around from the outside. With openings of the vehicle that can be opened and closed, the vehicle outer shell is formed by the closed opening. Opening this opening does not change the outer shell of the vehicle, but rather the aerodynamics in the area of this opening. By considering the immediate surroundings of the vehicle shell, the condition of the vehicle is taken into account in the aerodynamic model of the air flow. All variable parameters that change this condition lead to a change in the aerodynamic model of the airflow in the immediate vicinity of the vehicle's outer shell. In this way, with the method according to the invention, the flow towards and around the vehicle can be visualized with the aid of the aerodynamic model of the air flow.

According to a further embodiment of the method according to the invention, the surroundings of the vehicle alternatively or additionally include an area which is at such a distance from the vehicle that other vehicles may be located in the area. This area is thus arranged outside of the immediate vicinity of the vehicle outer shell. It goes so far that the arrangement of another vehicle no longer has any significant influence on the aerodynamics of the vehicle.

For example, the immediate vicinity of the vehicle shell can have a distance from the vehicle shell of less than 50 cm, in particular less than 30 cm, from the closest point on the vehicle outer shell. The area in which other vehicles can be arranged then extends from the immediate vicinity of the vehicle outer shell to a distance of 10 m, 20 m or even 50 m. In this case, the aerodynamic model of the air flow advantageously takes into account not only the and flow around your own vehicle, but also the flow towards and around other vehicles that are in the vicinity of your own vehicle. However, the flow towards and around other vehicles has an influence on the aerodynamic situation of one's own vehicle, so that the aerodynamic model of the air flow in the vehicle environment, which is calculated in the method according to the invention, depicts an overall situation in the vehicle environment.

In the method according to the invention, the aerodynamic model of the air flow is calculated, in particular, in real time. A so-called “reduced order model” can be used for this purpose.

The calculation is carried out in particular in the vehicle, so that the aerodynamic model of the air flow can be displayed in the vehicle in real time, independently of any communication connections between the vehicle and devices external to the vehicle.

For example, the flow around the vehicle dynamically, z. B. based on streamlines can be visualized. At the same time, the current drag coefficient can be output digitally or analogously, so that the driver can draw conclusions about the proportion of the vehicle's energy consumption caused by air resistance.

According to a development of the method according to the invention, target data for the variable parameters are determined in such a way that the aerodynamic model of the air flow in the vehicle environment results in a lower air resistance of the vehicle for these target data. This target data is then output. When determining the target data z. B. an optimization problem can be solved by which such target data are determined for which the air resistance of the vehicle is the lowest.

Advantageously, the output of the target data provides information on how the state of the variable parameters can be changed in order to reduce the energy consumption of the vehicle. For example, the information can be output that the state of the window opening or the roof opening should be changed in order to reduce the air resistance and thus the energy consumption of the vehicle. For example, the message can be output that the window and roof openings should be closed, since this increases the vehicle's energy consumption disproportionately at the current speed of the vehicle. Equally, the message can be issued that a spoiler should be extended or the hubcaps should be closed. The target data can thus contain a recommendation as to how the state of a variable parameter should be changed.

Alternatively, the target data can be output as a control signal for changing at least one variable parameter. In this case, the state of the variable parameter is changed automatically by the method according to the invention. As a result, the energy consumption of the vehicle can be reduced automatically.

According to a further embodiment of the method according to the invention, the target data for the variable parameters are assigned to a driving maneuver of the vehicle. For example, if the variable parameter is the vehicle's distance to a vehicle in front, the target data may indicate an optimal distance to the vehicle in front, in which case not only minimizing the vehicle's drag is considered in the optimization problem, but also a parameter is taken into account for safety, which can also take into account, for example, whether the vehicle is driven by the driver or autonomously. In this case, too, the target data can be output as a control signal. For example, with automatic longitudinal control of the vehicle, the distance to the vehicle in front can be reduced by the control signal in order to reduce the vehicle's air resistance by slipstreaming or driving in a convoy (so-called “platooning scenario”).

The aerodynamic model of the air flow can be visualized by a perspective or three-dimensional representation of a display device arranged in the vehicle. Furthermore, the visualization can include so-called "augmented reality" representation of the air flow in the vehicle environment. In this "augmented reality" display, the display of the air flow and, if necessary, the display of other vehicles is superimposed on the driver's real view. A head-up display that is known per se and used in the vehicle can be used for this purpose.

Due to the real-time visualization of the method according to the invention, the current flow situation around one's own vehicle and/or other vehicles as well as the current indication of the air resistance can be output. The driver can use this information to reduce energy consumption and CO ₂ emissions. In addition, an interesting infotainment element can be output through the visualization. Finally, future platooning scenarios for partially autonomous or fully autonomous vehicles can be realized and visualized by the method according to the invention.

Finally, the method according to the invention makes it possible to include game-typical elements in the visualization in order to motivate the driver to adopt an economical driving style. For this purpose it is also possible according to the invention to reward the driver for a fuel-efficient driving style. For example, a scoring system and/or competition with other drivers and a ranking list can be introduced.

The vehicle according to the invention is characterized by a visualization unit, which is designed to generate a visualization from the aerodynamic model of the air flow, and a display device arranged in the vehicle for displaying the visualization, which is coupled to the visualization unit.

The vehicle according to the invention is designed in particular to carry out the method described above. It therefore has the same advantages as the method according to the invention.

According to one embodiment of the vehicle according to the invention, the detection unit is coupled to pressure sensors which are arranged on the vehicle outer shell in order to detect at least the air pressure component exerted on the vehicle outer shell opposite to the direction of travel. These pressure sensors can be arranged, for example, in the area of the outer shell of the vehicle against which the air flows when the vehicle is moving. They can be embedded in the vehicle outer shell flush with the adjacent areas of the vehicle outer shell, so that the outer surfaces of the pressure sensors themselves represent part of the vehicle outer shell. With these pressure sensors, the aerodynamics in the area of the vehicle outer shell can be recorded directly and in this way a very precise aerodynamic model of the air flow in the vehicle environment can be calculated.

The detection unit can also be coupled to a camera, a LIDAR sensor, a radar sensor, a vehicle speedometer and other sensors used in the vehicle that detect parameters that affect the aerodynamics of the vehicle environment.

• 1 zeigt den grundsätzlichen Aufbau eines Ausführungsbeispiels des erfindungsgemäßen Fahrzeugs und
• die 2 bis 5 zeigen Visualisierungen, die von einem Ausführungsbeispiel des erfindungsgemäßen Verfahrens erzeugt werden.

The invention will now be explained using an exemplary embodiment with reference to the drawings.

• 1 shows the basic structure of an embodiment of the vehicle according to the invention and
• the 2 until 5 show visualizations that are generated by an embodiment of the method according to the invention.

• Das Fahrzeug 1 umfasst eine Erfassungseinheit 2 zum Erfassen von Daten zu veränderlichen Parametern, welche die Aerodynamik der Fahrzeugumgebung beeinflussen. Hierfür ist die Erfassungseinheit 2 mit Drucksensoren 3 verbunden, welche bei der Fahrzeugaußenhülle des Fahrzeugs 1 angeordnet sind. Die Drucksensoren 3 umfassen insbesondere jeweils drucksensitive Flächen, welche einen Teil der Fahrzeugaußenhülle darstellen. Mit den Drucksensoren kann insbesondere die entgegen der Fahrtrichtung des Fahrzeugs 1 auf die drucksensitive Fläche des jeweiligen Drucksensors 3 ausgeübte Luftdruckkomponente erfasst werden. Diese Luftdruckkomponente erhöht sich mit steigender Geschwindigkeit des Fahrzeugs und mit stärkerem Gegenwind.

First, with reference to 1 the exemplary embodiment of the vehicle 1 according to the invention is described:

• The vehicle 1 includes a detection unit 2 for detecting data on variable parameters that affect the aerodynamics of the vehicle environment. For this purpose, the detection unit 2 is connected to pressure sensors 3 which are arranged on the outer shell of the vehicle 1 . In particular, the pressure sensors 3 each include pressure-sensitive surfaces which represent part of the vehicle's outer shell. In particular, the air pressure component exerted on the pressure-sensitive surface of the respective pressure sensor 3 counter to the direction of travel of the vehicle 1 can be detected with the pressure sensors. This air pressure component increases with increasing vehicle speed and with stronger headwinds.

Furthermore, the detection unit 2 is connected to a camera 4 with which the vehicle surroundings can be optically detected. The images recorded by the camera 4 can be evaluated in a manner known per se in order to record the traffic situation in the vicinity of the vehicle 1 . In particular, other vehicles in the vehicle environment can be detected not only with regard to their position relative to vehicle 1, but also with regard to their kinematics and geometry.

Furthermore, the detection unit 2 is equipped with a LIDAR sensor 5 and a radar sensor 6 coupled in order to be able to capture the vehicle environment even more precisely. Finally, the detection unit 2 is connected to a vehicle speed sensor 7 in order to be able to detect the current speed of the vehicle 1 .

Furthermore, the detection unit 2 is coupled to status sensors 19 for internal vehicle data. These status sensors 19 detect, among other things, the status of individual window regulators in the vehicle, the status of a sunroof and, if applicable, the presence and type of roof structures. Furthermore, the state of a movable spoiler of the vehicle and the ground clearance of the vehicle 1, which can be changed by the adaptive chassis, can be detected by the state sensors 19.

The acquisition unit 2 is connected to a calculation unit 8 to which it transmits the acquired data on the variable parameters. The calculation unit 8 is designed to use the recorded data to calculate an aerodynamic model of the air flow in the vehicle environment. This calculation is carried out, for example, on the basis of what is known as a “reduced order model”.

The calculation unit 8 is also designed to determine target data for at least one variable parameter, as will be explained later with reference to the exemplary embodiment of the method according to the invention. For this purpose, the calculation unit 8 is coupled to a data bus 11 of the vehicle 1, to which the target data can be transmitted. The data bus 11 of the vehicle is coupled to control devices 12 which can convert the target data into control signals so that at least one variable parameter can be changed by a control device 12 such that the variable parameter corresponds to the target data.

The calculation unit 8 is also connected to a visualization unit 9 to which the calculated aerodynamic model of the air flows in the vehicle environment is transmitted. The visualization unit 9 is designed to generate a visualization from the aerodynamic model of the air flow. These visualizations are explained later with reference to the exemplary embodiment of the method according to the invention.

The visualization unit 9 is connected to a display device 10 . The display device displays the visualization in such a way that it can be perceived by the driver of the vehicle 1 . The display device 10 includes a display area inside the vehicle 1. The display device 10 also includes a head-up display with which an “augmented reality” display can be generated, which the driver can perceive when he leaves the vehicle 1 looks out into the vehicle environment.

• Bei dem erfindungsgemäßen Verfahren werden zunächst Daten zu unveränderlichen Parametern des Fahrzeugs 1 in der Berechnungseinheit 8 gespeichert. Zu diesen unveränderlichen Parametern gehören solche Parameter, welche die Aerodynamik des Fahrzeugs 1 beeinflussen, welche jedoch während der Bewegung des Fahrzeugs 1 nicht verändert werden. Unter anderem wird die Geometrie und Oberflächenbeschaffenheit der Außenhülle des Fahrzeugs 1 in der Berechnungseinheit 8 gespeichert.

The following is an embodiment of the method with reference to the 2 until 5 explained, with further refinements and developments of the exemplary embodiment of the vehicle 1 according to the invention being described:

• In the method according to the invention, data on unchangeable parameters of the vehicle 1 are initially stored in the calculation unit 8 . These unchangeable parameters include those parameters which influence the aerodynamics of the vehicle 1 but which are not changed while the vehicle 1 is moving. Among other things, the geometry and surface quality of the outer shell of the vehicle 1 is stored in the calculation unit 8 .

If the vehicle 1 is in motion, variable parameters are continuously recorded by the sensors 3 to 6 for recording the vehicle surroundings and by the sensors 7 and 19 for recording internal vehicle data. The recorded data are transmitted from the recording unit 2 to the calculation unit 8 .

The calculation unit 8 calculates an aerodynamic model of the air flow in the vehicle environment in real time on the basis of the stored data on the unchanging parameters and the recorded data on the changing parameters. This aerodynamic model reflects the air flow in the immediate vicinity of the vehicle 1 . Furthermore, however, this aerodynamic model also reflects the air flow at a distance from the vehicle 1 , which influences the air resistance of the vehicle 1 . For example, other vehicles in the vicinity of the vehicle in particular influence the air flow impinging on the vehicle 1 . The aerodynamic model thus also includes the flow towards and around other vehicles in the vehicle environment.

In addition, the calculation unit 8 generates an evaluation value which evaluates the air resistance of the vehicle 1 in the current environmental situation. It also calculates the drag coefficient.

Furthermore, the calculation unit 8 solves an optimization problem. Optimum target data is determined for some of the variable parameters which the air resistance of the vehicle 1 is currently minimal.

On the one hand, target data optimized for internal vehicle data are determined, with further parameters that have no influence on the aerodynamics of the vehicle environment being able to be taken into account in the optimization problem. For example, target values of an automatic air conditioning system can be taken into account. The optimization problem can be used to determine, for example, that at low speeds an open state of the window and sunroof is optimal, since in this case the specifications of the automatic climate control can be met and the deterioration in air resistance through the open windows and the open roof opening is only one slight increase in air resistance. At higher speeds, however, the target data can indicate that the windows and sunroof should be closed in order to reduce the vehicle's air resistance and thus the energy consumption of the vehicle 1 . In this case, the specifications of the automatic air conditioning are met in a different way.

Furthermore, an optimization problem is solved, which optimizes the distance of the vehicle 1 from a vehicle driving in front. In this case, a required safety distance from the vehicle in front is also taken into account, depending on whether the vehicle is being driven autonomously or by means of automatic longitudinal control, or is being driven only by the driver without support from assistance systems. A smaller distance to the vehicle driving ahead can lead to a lower air resistance of the vehicle 1 . When calculating the optimum distance to the vehicle in front, however, it is taken into account that the distance must not be too small for safety reasons.

If the vehicle 1 is at least partially controlled autonomously, e.g. B. an automatic longitudinal guidance is activated, target data on variable parameters relating to the longitudinal guidance are transmitted from the calculation unit 8 to the data bus 11, from which these target data are transmitted to one or more control devices 12 which control the automatic longitudinal guidance of the vehicle 1 regulate. Control signals for the automatic longitudinal control are then generated and output by the corresponding control devices 12 in accordance with the desired data.

The calculated aerodynamic model of the air flow, the evaluation value and the drag coefficient are transmitted to the visualization unit 9, which generates a visualization therefrom. This visualization is transmitted from the visualization unit 9 to the display device 10, which displays the visualization.

Furthermore, the calculated target data, if they are not to be automatically converted into the control signal, are transmitted to the visualization unit 9, which incorporates them into the visualization of the aerodynamic model of the air flow or generates a separate display for this target data, so that the target data are also displayed by the display device 10 .

2 shows a visualization of the flow around vehicle 1 generated by the method on a display area in the center console of vehicle 1. A graphic object 13 for vehicle 1 is displayed. Furthermore, a visualization 15 of the air flow around the vehicle 1 is shown. Finally, a digital graphical representation 14 of the drag coefficient, which has been calculated by the calculation unit 8, is also displayed.

In 3 Another type of display using the display device 10 is shown. In this case, a graphical object 16 for another vehicle in the vehicle environment is augmented by means of a head-up display and displayed together with an augmented visualization 15 of the associated air flow. At the same time, the display surface of the display device 10 shows a graphical representation 17 of the evaluation value, which evaluates the air resistance of the vehicle 1 in the current environmental situation. The evaluation value can be output both digitally and analogously. As in 3 shown, the flow around a vehicle driving ahead is visible. In particular, the evaluation value takes into account the position of the host vehicle 1 in the flow field of the environment. With the help of the evaluation value, the driver thus receives an indication of how he can improve his own air resistance through suitable positioning relative to the vehicle driving in front.

In 4 a visualization of the aerodynamic model of the air flow is shown, in which both a graphical object 13 for the host vehicle and a graphical object 16 for another vehicle driving ahead are shown together with the visualization 15 of the air flow. A so-called “platooning scenario” is shown, in which the air resistance of vehicle 1 is reduced by selecting the distance from the vehicle in front in such a way that air turbulence is minimized. In this case, the calculation unit 8 has an optimum for the platooning scenario Distance to the vehicle ahead in terms of safety and air resistance of the vehicle 1 is calculated. The visualization unit 9 has generated a graphical object 18 for the optimized setpoint data for the distance to the vehicle driving ahead, which is displayed by the display device 10 and which gives an indication of a driving maneuver. In particular, it is pointed out whether the distance to the vehicle driving ahead should be increased or decreased in order to achieve optimal air resistance for the vehicle 1, taking safety aspects into account.

In 5 is a scenario represented by the display area of the display device 10, which corresponds to the scenario as shown in FIG 3 is shown. In this case, no augmented reality representation is selected, but a perspective representation of the graphic object 16 for another vehicle in connection with the associated visualization 15 of the air flow.

reference list

1

vehicle

2

registration unit

3

pressure sensors

4

camera

5

LIDAR sensor

6

radar sensor

7

vehicle speedometer

8th

calculation unit

9

visualization unit

10

display device

11

data bus

12

controls

13

graphic object for the vehicle

14

digital graphical representation of the drag coefficient

15

Visualization of the air flow

16

graphic object for another vehicle

17

graphical representation of a rating value

18

graphic object for information on driving manoeuvres

19

condition sensors

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 102014200610 A1 [0003]
• DE 102016114967 A1 [0004]

Claims (13)

Method for outputting aerodynamic information in a vehicle (1), in which data is recorded on at least one variable parameter which influences the aerodynamics of the vehicle environment, and an aerodynamic model of the air flow in the vehicle environment is calculated using the recorded data, characterized in that that a visualization is generated from the aerodynamic model of the air flow and the visualization is displayed by means of a display device (10) arranged in the vehicle (1). procedure after claim 1 , characterized in that the or one of the variable parameters is the air pressure component exerted against the direction of travel on the vehicle outer shell. procedure after claim 1 or 2 , characterized in that the or one of the variable parameters is the state of at least one opening in the vehicle outer shell, which can be closed. Method according to one of the preceding claims, characterized in that the or one of the variable parameters is the ground clearance of the vehicle (1). Method according to one of the preceding claims, characterized in that the or one of the variable parameters is the geometry and/or kinetics of other vehicles in the vehicle environment. Method according to one of the preceding claims, characterized in that the vehicle environment includes the direct environment of the vehicle outer shell. Method according to one of the preceding claims, characterized in that the area surrounding the vehicle comprises an area which is at such a distance from the vehicle (1) that other vehicles can be arranged in the area. Method according to one of the preceding claims, characterized in that the aerodynamic model of the air flow is calculated in real time. Method according to one of the preceding claims, characterized in that target data for at least one variable parameter is determined in such a way that the aerodynamic model of the air flow in the vehicle environment results in a lower air resistance of the vehicle (1) for this target data, and the target -Data are output. procedure after claim 9 , characterized in that the target data for the variable parameters are associated with a driving maneuver of the vehicle (1). Method according to one of the preceding claims, characterized in that the visualization includes an augmented reality representation of the air flow in the vehicle environment. Vehicle (1) with a display device (10) for outputting aerodynamic information in a vehicle (1) with a detection unit (2) for detecting data on at least one variable parameter which influences the aerodynamics of the vehicle environment, and a calculation unit (8) that is designed to calculate an aerodynamic model of the air flow in the vehicle environment using the recorded data, characterized by a visualization unit (9) that is designed to generate a visualization (15) from the aerodynamic model of the air flow, and a in the Vehicle (1) arranged display device (10) for displaying the visualization (15), which is coupled to the visualization unit (9). vehicle after claim 12 , characterized in that the detection unit (2) is coupled to pressure sensors (3) which are arranged on the vehicle outer shell in order to detect at least the air pressure component exerted on the vehicle outer shell opposite to the direction of travel.

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