DE102022111308A1 - Method and device for controlling the sailing operation of a motor vehicle, taking into account a speed and/or distance tolerance band - Google Patents

Abstract

A device for controlling the sailing operation of a vehicle as part of distance and/or speed control of the vehicle is described. The device is set up, based on a current driving progress of the vehicle, to predict a distance and/or speed profile of the vehicle in sailing operation, and the predicted distance and/or speed profile of the vehicle with a tolerance band limit of a tolerance band around a target distance and/or around a Compare the target speed of the distance and/or speed control of the vehicle. The device is also set up to control the sailing operation depending on the comparison.

Description

The invention relates to a motor vehicle which is designed to be operated in a sailing mode. In particular, the invention relates to a method and a corresponding device for controlling the sailing operation of a motor vehicle in connection with distance and/or speed control.

A vehicle with an internal combustion engine can be designed to temporarily disconnect the internal combustion engine from the drive train of the vehicle while driving and, if necessary, to put it down in order to reduce the energy consumption of the vehicle. In other words, the vehicle can be designed to be temporarily operated in sailing mode during a journey.

The present document deals with the technical task of enabling a particularly energy-efficient and/or comfortable sailing operation of a vehicle, in particular in connection with distance and/or speed control of the vehicle.

The task is solved by each of the independent claims. Advantageous embodiments are described, among other things, in the dependent claims. It should be noted that additional features of a patent claim dependent on an independent patent claim can form a separate invention independent of the combination of all the features of the independent patent claim, without the features of the independent patent claim or only in combination with a subset of the features of the independent patent claim can be made the subject of an independent claim, a division application or a subsequent application. This applies equally to technical teachings described in the description, which may constitute an invention independent of the features of the independent patent claims.

According to one aspect, a (control) device for controlling the sailing operation of a (motor) vehicle is described as part of distance and/or speed control of the vehicle. During operation of the distance and/or speed control, the driving speed can be adjusted automatically depending on a target distance (set by the driver) to the vehicle in front driving (directly) in front of the vehicle and/or (in the case of free travel) depending on a ( The target speed determined by the driver is adjusted, in particular regulated (to the target distance and/or to the target speed). As part of the distance and/or speed control, it can be ensured that the driving speed always remains within a tolerance band around the target speed and/or that the distance always remains within a tolerance band around the target distance.

The device can be set up to decouple the drive motor (in particular the internal combustion engine) of the vehicle from the drive train of the vehicle (and if necessary to deactivate the drive motor) in order to begin sailing operation. Alternatively or additionally, the device can be set up to couple the drive motor to the drive train of the vehicle (and, if necessary, activate the drive motor) in order to end the sailing operation. The vehicle can roll in sailing mode without the influence of a drive torque and/or a drag torque of the drive motor.

During sailing operation of the vehicle, typically no drive and/or drag torque is caused by the drive motor of the vehicle. If necessary, no braking torque (through one or more friction brakes on the vehicle) can be created during coasting operation. Active distance and/or speed control may therefore not be possible during sailing operation. However, it can be monitored that during sailing operation the distance of the vehicle to the vehicle in front remains within the predefined tolerance band around the target distance and/or that the driving speed of the vehicle remains within the predefined tolerance band around the target speed. Outside of sailing, active distance and/or speed control can take place (to the target distance or to the target speed). In particular, it can be ensured that the distance and/or the driving speed are set to the target distance or to the target speed immediately after the sailing operation has ended.

The device can be set up to predict a distance and/or speed profile of the vehicle in sailing operation based on the respective current driving progress of the vehicle (eg based on the current time and/or based on the current position). The predicted distance and/or speed curve can display the temporal and/or spatial distance of the vehicle to the vehicle in front driving (directly) in front of the vehicle and/or the driving speed of the vehicle as a function of the driving progress (based on the current driving progress). The predicted distance and/or speed curve can be based on the current one The driving progress extends over a predefined prediction horizon. The device can be set up to repeatedly update the predicted distance and/or speed profile (based on current driving progress).

The driving progress may indicate or correspond to the position of the vehicle along the roadway traveled by the vehicle. Alternatively or additionally, the driving progress can display or correspond to the respective point in time when the vehicle is traveling. The prediction horizon can therefore correspond to a specific distance and/or time horizon (e.g. 100 meters or more, or 500 meters or more; or 10 seconds or more, or 20 seconds or more).

The device can be set up to determine an upcoming gradient of the road traveled by the vehicle (for the prediction horizon). This information can be determined based on a digital map for the road network traveled by the vehicle. The distance and/or speed curve of the vehicle in sailing operation can then be predicted in a precise manner based on the gradient curve ahead.

The device can further be set up to determine status data in relation to the condition (e.g. the current driving speed) of the vehicle and/or in relation to the condition (e.g. the current driving speed) of the front vehicle driving in front of the vehicle. The distance and/or speed profile of the vehicle in sailing operation can then be predicted in a particularly precise manner based on the status data.

When predicting the distance and/or speed profile of the vehicle, it can be assumed that the vehicle is in sailing mode throughout the entire prediction horizon. Furthermore, an assumption can be made regarding the behavior of the vehicle in front during the prediction horizon. For example, it can be assumed that the driving speed of the vehicle in front remains constant throughout the entire prediction horizon.

• • der Fahrfortschritts-Abschnitt, in dem der prädizierte Abstands- und/oder Geschwindigkeitsverlauf innerhalb des vordefinierten Toleranzbands um den Zielabstand und/oder um die Zielgeschwindigkeit verbleibt; und/oder
• • den Fahrfortschritt, an dem der prädizierte Abstands- und/oder Geschwindigkeitsverlauf den Zielabstand bzw. die Zielgeschwindigkeit oder einen davon abhängigen Schwellenwert erreicht (und ggf. anschließend unterschreitet oder überschreitet).

The device can also be set up to compare the predicted distance and/or speed profile of the vehicle with the target distance or with a tolerance band limit of the tolerance band around the target distance and/or with the target speed or with a tolerance band limit of the tolerance band around the target speed of the distance and /or speed control of the vehicle. In particular, the predicted distance profile can be compared with the target distance or with the tolerance band limit of the tolerance band of the target distance. Alternatively or additionally, the predicted speed curve can be compared with the target speed or with the tolerance band limit of the tolerance band of the target speed. As part of the comparison, it can be determined, for example,

• • the driving progress section in which the predicted distance and/or speed curve remains within the predefined tolerance band around the target distance and/or around the target speed; and or
• • the driving progress at which the predicted distance and/or speed curve reaches the target distance or target speed or a threshold value dependent on it (and, if necessary, subsequently falls below or exceeds it).

The sailing operation can then be controlled, in particular started or ended, depending on the comparison (in particular depending on the determined driving progress section and/or depending on the determined driving progress). In this way, a particularly energy-efficient and comfortable sailing operation of a vehicle with active distance and/or speed control can be achieved. During the distance and/or speed control and/or during the sailing operation, the target distance and/or the target speed can be deviated from at least temporarily and/or within a certain tolerance band. The tolerance band can be, for example, ±5% or less, or ±10% or less of the target distance or target speed.

The device can thus be set up, based on a current driving progress of the vehicle, to predict a distance and/or speed profile, in particular a distance profile and/or a speed profile, of the vehicle in sailing operation.

The device can also be set up to compare the predicted distance and/or speed profile of the vehicle with a tolerance band limit of the tolerance band around the target distance and/or around the target speed of the distance and/or speed control of the vehicle. In particular, the predicted distance profile of the vehicle can be compared with the upper tolerance band limit of the tolerance band around the target distance. The upper tolerance band limit can, for example, be between 3% and 13%, in particular between 5% and 10%, above the target distance. Alternatively or additionally, the Predicted speed curve of the vehicle can be compared with a lower tolerance band limit of the tolerance band around the target speed. The lower tolerance band limit can be, for example, between 3% and 13%, in particular between 5% and 10%, below the target speed.

The sailing operation can then be controlled, in particular started or ended, in a particularly energy-efficient and/or comfortable manner depending on the one or more comparisons.

The device can be set up to determine an exit driving progress depending on the comparison (at which the exit from sailing operation and/or the transition to active distance and/or speed control is effected). The sailing operation can then be ended in a particularly energy-efficient and/or comfortable manner at the exit travel progress.

The device can in particular be set up to determine an intersection driving progress (i.e. an intersection point) of the predicted distance and/or speed profile of the vehicle in sailing operation with the tolerance band limit. In particular, an intersection driving progress (i.e. the intersection) of the predicted distance profile with the (upper) tolerance band limit of the tolerance band around the target distance can be determined. Alternatively or additionally, an intersection driving progress (i.e. the intersection) of the predicted speed curve with the (lower) tolerance band limit around the target speed can be determined. The exit travel progress can then be determined based on the intersection travel progress. The exit travel progress can be a (possibly predefined) offset value ahead of the intersection travel progress. This enables particularly comfortable and energy-efficient sailing operations.

The device can be set up to determine that the vehicle has an actual driving speed when exiting sailing operation (in particular at the exit driving progress of exiting sailing operation) which (e.g. by 5% or more, or by 10% or more) is below the target speed of the distance and / or speed control, and / or has an actual distance to the vehicle in front that is (e.g. by 5% or more, or by 10% or more) above the target distance of the distance - and/or speed control. This can be determined based on the sensor data from one or more environmental sensors (e.g. from a radar sensor) and/or from one or more status sensors (e.g. from a speed sensor).

It can therefore be recognized that the vehicle has a driving speed that is too low and/or a distance that is too high for the distance and/or speed control when exiting sailing mode. In such a situation, a certain (possibly standard) acceleration can be achieved as part of the distance and/or speed control.

In particular, the device can be set up to repeatedly detect, as part of the distance and/or speed control, that the actual speed is below the target speed and/or that the actual distance is above the target distance. The standard acceleration can then be effected in response to this in order to adjust, in particular to regulate, the actual speed to the target speed and/or the actual distance to the target distance. When controlling the distance and/or speed, a standard acceleration can thus be effected in order to keep the vehicle at the target speed and/or at the target distance. Furthermore, as part of the distance and/or speed control, it can be ensured that the actual speed of the vehicle remains within the tolerance band around the target speed and/or that the actual distance of the vehicle to a vehicle in front remains within the tolerance band around the target distance.

The standard acceleration effected as part of the distance and/or speed control can depend on the extent of the deviation (i.e. on the difference) between the actual speed and the target speed and/or between the actual distance and the target distance.

The device can be set up to repeatedly determine the difference between the actual speed and the target speed and/or between the actual distance and the target distance as part of the distance and/or speed control. The value of the standard acceleration can then be determined depending on the respective difference, in particular using a predefined and/or stored relationship between the value of the standard acceleration and the difference. Typically, the value of the standard acceleration increases as the difference value increases. In this way, particularly reliable distance and/or speed control can be achieved.

The device can be set up to use the offset value (to determine the exit journey step) depending on the value of the (standard) acceleration of the vehicle, which is caused by the drive motor of the vehicle as part of the distance and / or speed control after the sailing operation has ended. As already explained above, the acceleration of the vehicle can be effected in order to bring the actual speed of the vehicle closer to the target speed and/or to bring the actual distance of the vehicle to the vehicle in front driving in front of the vehicle closer to the target distance.

The offset value can be determined depending on the value of the (standard) acceleration of the distance and/or speed control in order to ensure that the actual speed and/or the actual distance of the vehicle do not leave the respective tolerance band (neither during the sailing operation or during the distance and/or speed control directly following the sailing operation).

The device can thus be set up to determine the exit driving progress for ending the sailing operation as a function of the above-mentioned comparison and as a function of the value of the (standard) acceleration of the vehicle after the end of the sailing operation. The exit driving progress can be determined in such a way that the actual speed of the vehicle and/or the actual distance to the front vehicle driving in front of the vehicle during sailing operation and/or in a predefined driving progress range (e.g. of 50 meters or more and/or 2 seconds or more) remain within the tolerance band after the sailing operation has ended.

It can then be caused that the sailing operation is ended at the determined exit travel progress. Furthermore, it can be caused that the vehicle is accelerated after the sailing operation has ended as part of the distance and/or speed control, in particular in order to bring the actual speed of the vehicle closer to the target speed and/or to bring the actual distance closer to the target distance.

The device can thus be set up to end the sailing operation in such a way as a function of the comparison and/or to accelerate the vehicle after the end of the sailing operation in such a way that the actual speed of the vehicle and/or the actual distance to the vehicle driving in front of the vehicle The front vehicle remains within the tolerance band during sailing operation and / or in the predefined driving progress area after the end of sailing operation.

By taking into account the value of the (standard) acceleration caused as part of the distance and/or speed control when determining the exit driving progress, the energy efficiency and/or the comfort of the sailing operation in connection with the active distance and/or speed control can be further improved increase.

The comparisons described in this document between the predicted distance and/or speed curve and a speed or a distance can each be made separately for the respective physical quantity. A comparison of the distance profile with a distance and/or a comparison of the speed profile with a speed can therefore take place.

According to a further aspect, a (road) motor vehicle (in particular a passenger car or a truck or a bus or a motorcycle) is described which includes the (control) device described in this document.

According to a further aspect, a method for controlling the sailing operation of a vehicle as part of an (active) distance and/or speed control of the vehicle is described. The sailing operation can be embedded in a distance and/or speed control. The active distance and/or speed control can take place automatically when the vehicle is not being operated in coasting mode. Sailing operation can be limited in such a way that during sailing operation the distance to a vehicle in front remains within a certain tolerance band around the target distance and/or the speed of the vehicle remains within a certain tolerance band around the target speed.

The method includes predicting, based on a current driving progress of the vehicle, a distance and/or speed profile of the vehicle in sailing operation. Furthermore, the method includes comparing the predicted distance and/or speed profile of the vehicle with a tolerance band limit of the tolerance band around the target distance and/or around the target speed of the distance and/or speed control of the vehicle. The method further includes controlling, in particular starting or ending, the sailing operation depending on the comparison.

According to a further aspect, a software (SW) program is described. The SW program can be set up to run on a Pro cessor (e.g. on a control unit of a vehicle) and thereby carry out the method described in this document.

According to a further aspect, a storage medium is described. The storage medium may include a SW program configured to be executed on a processor and thereby carry out the method described in this document.

It should be noted that the methods, devices and systems described in this document can be used both alone and in combination with other methods, devices and systems described in this document. Furthermore, any aspects of the methods, devices and systems described in this document can be combined with one another in a variety of ways. In particular, the features of the claims can be combined with one another in a variety of ways. Furthermore, features listed in brackets are to be understood as optional features.

• 1 beispielhafte Komponenten eines Fahrzeugs;
• 2a eine beispielhafte Fahrsituation eines Fahrzeugs;
• 2b einen beispielhaften Steigungsverlauf einer Fahrbahn;
• 3 einen beispielhaften prädizierten Abstands- und/oder Geschwindigkeitsverlauf während des Segelbetriebs; und
• 4 ein Ablaufdiagramm eines beispielhaften Verfahrens zur Steuerung des Segelbetriebs eines Fahrzeugs.

The invention is further described in more detail using exemplary embodiments. Show it

• 1 exemplary components of a vehicle;
• 2a an exemplary driving situation of a vehicle;
• 2 B an example gradient of a road;
• 3 an exemplary predicted distance and/or speed curve during sailing operation; and
• 4 a flowchart of an exemplary method for controlling the sailing operation of a vehicle.

As stated at the beginning, the present document is concerned with increasing the energy efficiency and/or comfort of sailing a motor vehicle. In this context shows 1 an exemplary vehicle 100. The vehicle 100 includes one or more environmental sensors 102 (eg, at least one camera, a radar sensor, a lidar sensor, and/or an ultrasonic sensor) that are configured to receive environmental data (ie, sensor data) related to the surroundings of the vehicle 100 capture. Furthermore, the vehicle 100 includes one or more vehicle sensors 106 that are set up to record status data (ie sensor data) relating to a state (eg relating to the driving speed) of the vehicle 100.

A (control) device 101 of the vehicle 100 can be set up to operate the drive motor 103 (in particular the internal combustion engine) of the vehicle 100 as a function of the environmental data and/or as a function of the status data in order to guide the vehicle 100 longitudinally at least partially automatically. In particular, an automatic distance and/or speed control (in particular ACC, Adaptive Cruise Control) can be effected, in which the driving speed of the vehicle 100 is automatically adjusted in order to adjust the distance of the vehicle 100 to a vehicle in front driving directly in front of the vehicle 100 to set to a target distance (which was set, for example, by the driver of the vehicle 100) and/or to set the driving speed of the vehicle 100 when driving freely (without the vehicle in front) to a target speed (which was set, for example, by the driver of the vehicle 100) .

2a shows an exemplary driving situation in which the vehicle 100 is driving on a roadway 202 behind a vehicle 200 in front. The distance 201 between the vehicle 100 and the front vehicle 200 is set to a specific target distance by the device 101 of the vehicle 100. The distance 201 can be a spatial distance that corresponds to the spatial distance (for example measured in meters) between the vehicle 100 and the vehicle in front 200. Alternatively or additionally, the distance 201 can be a time distance that corresponds to the time that the vehicle 100 would need at the current driving speed to reach the vehicle in front 200 (assuming that the vehicle in front 200 is stationary). The time distance can, for example, correspond to the quotient of the current driving speed of the vehicle 100 and the spatial distance between the vehicle 100 and the vehicle in front 200.

The (control) device 101 can be set up to operate the vehicle 100 in a so-called sailing operation at least temporarily during active distance and/or speed control. For this purpose, the clutch 105 of the vehicle 100 can be caused to decouple the drive motor 103 from the drive train of the vehicle 100, in particular from the one or more driven wheels of the vehicle 100. Furthermore, the drive motor 103 can be deactivated and/or stopped. The vehicle 100 then rolls (without drag torque and/or without drive torque from the drive motor 103) over the roadway 202 traveled by the vehicle 100. In this way, the energy consumption of the vehicle 100 can be reduced.

The vehicle 100 may include a position sensor 104 that is configured to capture position data (ie, sensor data) in relation to the current position of the vehicle 100. The position data can include, for example, coordinates of a global navigation satellite system (GNSS, global navigation satellite system), such as GPS coordinates. The device 101 can be set up to determine the spatial course of the road 202 on which the vehicle 100 will travel based on the position data and based on a digital map with respect to the road network traveled by the vehicle 100. If necessary, a route through the road network may have been planned using a navigation system of the vehicle 100. Based on the driving route, it can be recognized along which road 202 the vehicle 100 will travel based on the current time and/or based on the current position. Furthermore, the spatial course, in particular the gradient, of the road ahead 202 can be determined on the basis of the digital map.

2 B shows an exemplary gradient 210 of the roadway 202 traveled by the vehicle 100. The gradient 210 shows the gradient 212 of the roadway 202 as a function of the position on the roadway 202 and/or as a function of the time during a journey (generally as a function of the driving progress of the vehicle 100). vehicle 100).

The device 101 can be set up to predict a distance profile and/or a speed profile of the vehicle 100 in sailing operation based on the slope profile 210 of the road ahead 202. The distance profile can display the (temporal and/or spatial) distance 201 of the vehicle 100 to the vehicle in front 200, as a function of position and/or as a function of time (generally as a function of driving progress). The speed history may indicate the travel speed of the vehicle 100 as a function of position and/or as a function of time (generally as a function of travel progress). It can be assumed that the vehicle 100 is operated in coasting mode (without the influence of a drive and/or braking torque generated by the vehicle 100). Furthermore, a specific speed behavior of the front vehicle 200 can be assumed (to determine the distance profile); For example, it can be assumed that the front vehicle 200 will travel at a constant speed. The distance progression and/or the speed progression can be, for example, for a spatial prediction horizon of 50 meters or more, or of 100 meters or more (based on the current position of the vehicle 100) and/or for a temporal prediction horizon of 5 seconds or more, or of 10 seconds or more can be predicted.

The activation (also referred to as entry) and/or the deactivation (also referred to as exit) of the sailing operation of the vehicle 100 can be carried out in a precise and energy-efficient manner (when using the distance and/or speed controller) depending on the predicted distance profile and/or depending on the predicted speed curve.

In particular, the device 101 of the vehicle 100 can be set up (during operation of the distance and/or speed controller) to generate a distance curve based on the current position of the vehicle 100 and/or based on the current point in time (generally, based on the current driving progress). and/or to predict a speed profile of the vehicle 100 in sailing operation. Entry into or exit from sailing operation can then be effected depending on the predicted distance profile and/or depending on the predicted speed profile.

3 shows an exemplary predicted distance and/or speed curve 310 during sailing operation of the vehicle 100. As already explained, the distance and/or speed curve 310 shows the actual distance and/or the actual speed 301 of the vehicle 100 as a function of the driving progress 302 (eg as a function of the position and/or as a function of the time) when the vehicle 100 is traveling.

3 also shows an exemplary tolerance band 335 around the target distance and / or around the target speed 331, with a lower threshold or with a lower tolerance band limit 333 and an upper threshold or an upper tolerance band limit 332, which enclose the target distance and / or the target speed 331. In 3 In particular, a tolerance band 335 is shown around the target speed 331 (for speed control after exiting sailing mode). The aspects described in this document are applicable for distance control after you have stopped sailing.

The device 101 can be set up to determine on the basis of the predicted distance and/or speed curve 310 that the predicted distance and/or speed curve 310 intersect a threshold value or a tolerance band limit 332, 333 of the tolerance band 335 at an intersection driving progress 321 (in particular the lower threshold 333 of the speed tolerance band 335 and/or the upper threshold value 332 of the distance tolerance band 335).

The device 101 can also be set up to effect an exit from the sailing operation at an exit travel progress 323, which is a certain offset value 322 before the intersection travel progress 321. The vehicle 100 may have an actual driving speed 301 at the exit driving progress 323 that is below the target speed 331 (and/or an actual distance 301 that is above the target distance 331).

The device 101 can be set up (immediately) after exiting sailing mode to cause an acceleration of the vehicle 100 as part of the distance and/or speed control in order to accelerate the vehicle 100 to the target speed 331 and/or to cause that the vehicle 100 has the target distance 331. A certain standard acceleration can be applied, whereby the in 3 speed curve 311 shown is effected.

By exiting sailing operation at an exit driving progress 323, which is a certain offset value 322 before the intersection driving progress 321 (at which the predicted distance and / or speed curve 310 intersects the respective tolerance band limit 332, 333), can be effected that the distance or speed curve 311 of the vehicle 100 remains within the respective tolerance band 335 after exiting sailing operation (and does not leave the tolerance band 335, as illustrated by the distance or speed curve 312). In this way, a particularly energy-efficient and safe distance and/or speed control can be achieved with sailing operation.

It can thus be recognized that the predicted sail rollout curve 310 leaves the sail tolerance band 335 upwards or downwards during the sailing process. Sailing can then be ended in a parameterizable period of time before leaving the tolerance band 335 (i.e. before the intersection travel progress 321). This makes particularly energy-efficient sailing operation possible.

4 shows a flowchart of a (possibly computer-implemented) method 400 for controlling the sailing operation of a (motor) vehicle 100 as part of a distance and / or speed control of the vehicle 100, in which the driving speed 401 of the vehicle 100 depends on a target distance 331 to a front vehicle 200 and/or (when driving freely) is set, in particular regulated, as a function of a target speed 331.

The method 400 includes predicting 401, based on a current driving progress of the vehicle 100 (in particular based on a current time and/or based on a current position of the vehicle 100), of a distance and/or speed profile 310 of the vehicle 100 in sailing operation. The distance and/or speed curve 310 can be predicted based on the curve 210 of the slope 212 of the roadway 202 traveled by the vehicle 100. It can be assumed that the vehicle 100 is in sailing mode over the entire predicted distance and/or speed curve 310 (and is therefore not driven by the drive motor 103 and/or therefore no drag torque is caused by the drive motor 103).

The method 400 further includes comparing 402 the predicted distance and/or speed profile 310 of the vehicle 100 with a tolerance band limit 332, 333 (in particular with an upper threshold value or with an upper tolerance band limit 332 or with a lower threshold value or with a lower tolerance band limit 333) of a tolerance band 335 around the target distance 331 and/or around the target speed 331 of the distance and/or speed control of the vehicle 100. In particular, the predicted distance profile 310 can be compared with the upper tolerance band limit 332 of the tolerance band 335 around the target distance 331. Alternatively or additionally, the predicted speed curve 310 can be compared with the lower tolerance band limit 333 of the tolerance band 335 around the target speed 331.

Furthermore, the method 400 includes controlling 403, in particular starting or ending, the sailing operation depending on the comparison.

The measures described in this document can achieve a particularly energy-efficient and/or comfortable sailing operation as part of active distance and/or speed control.

The present invention is not limited to the exemplary embodiments shown. In particular, it should be noted that the description and the figures are only intended to illustrate the principle of the proposed methods, devices and systems by way of example.

Claims (11)

Device (101) for controlling the sailing operation of a vehicle (100) as part of distance and/or speed control of the vehicle (100); wherein the device (101) is set up, - based on a current driving progress of the vehicle (100), to predict a distance and/or speed curve (310) of the vehicle (100) in sailing operation; - the predicted distance and/or speed curve (310) of the vehicle (100) with a tolerance band limit (332, 333) of a tolerance band (335) around a target distance (331) and/or around a target speed (331) of the distance and/or or speed control of the vehicle (100); and - to control the sailing operation depending on the comparison, in particular to start or end it. Device (101) according to Claim 1 , wherein the device (101) is set up to - determine an exit driving progress (323) depending on the comparison; and - end the sailing operation at the exit sailing progress (323). Device (101) according to Claim 2 , wherein the device (101) is set up to - determine an intersection driving progress (321) of the predicted distance and / or speed curve (310) of the vehicle (100) in sailing operation with the tolerance band limit (332, 333); and - to determine the exit travel progress (323) on the basis of the intersection travel progress (321), the exit travel progress (323) being in particular an offset value (322) ahead of the intersection travel progress (321). Device (101) according to Claim 3 , wherein the device (101) is set up to determine the offset value (322) depending on a value of an acceleration of the vehicle (100), which is provided by a drive motor (103) as part of the distance and / or speed control after the sailing operation has ended. of the vehicle (100), in particular to bring an actual speed (301) of the vehicle (100) closer to the target speed (331) and/or to achieve an actual distance (301) of the vehicle (100) to a vehicle in front of the vehicle ( 100) moving front vehicle (200) to approach the target distance (331). Device (101) according to one of the preceding claims, wherein the device (101) is set up - to determine an exit driving progress (323) for ending the sailing operation depending on the comparison and depending on a value of an acceleration of the vehicle (100) after the end of the sailing operation, in particular in such a way that an actual speed (301) of the vehicle (100) and/or an actual distance (301) to a front vehicle (200) traveling in front of the vehicle (100) remains within the tolerance band (335) during sailing operation and/or in a predefined driving progress area after the sailing operation has ended; - to cause the sailing operation to end at the determined exit travel progress (323); and - to cause the vehicle (100) to be accelerated after the sailing operation has ended as part of the distance and/or speed control, in particular in order to bring the actual speed (301) of the vehicle (100) closer to the target speed (331) and/or the Actual distance (301) to approach the target distance (331). Device (101) according to one of the preceding claims, wherein the device (101) is set up to end the sailing operation depending on the comparison and / or to accelerate the vehicle (100) after the end of the sailing operation in such a way that an actual speed (301) of the vehicle (100) and/or an actual distance (301) to a front vehicle (200) driving in front of the vehicle (100) during sailing operation and/or in a predefined driving progress area after completion of sailing operation within the tolerance band (335) remain. Device (101) according to one of the preceding claims, wherein the device (101) is set up - to predict a distance curve (310) and/or a speed curve (310) of the vehicle (100) in sailing operation; - compare the predicted distance curve (310) of the vehicle (100) with an upper tolerance band limit (332) of a tolerance band (335) around the target distance (331); and or - the predicted speed curve (310) of the vehicle (100) with a lower tolerance band limit (333) of a tolerance band (335) to compare the target speed (331) and - to end the sailing operation depending on the one or more comparisons. Device (101) according to one of the preceding claims, wherein the device (101) is set up to - determine an upcoming gradient (210) of a roadway (202) traveled by the vehicle (100); and - the distance and/or speed curve (310) of the vehicle (100) in sailing operation based on the gradient (210) ahead. Device (101) according to one of the preceding claims, wherein the device (101) is set up - to determine status data in relation to a condition of the vehicle (100) and/or in relation to a condition of a front vehicle (200) traveling in front of the vehicle (100); and - to predict the distance and/or speed curve (310) of the vehicle (100) in sailing operation based on the status data. Device (101) according to one of the preceding claims, wherein - the predicted distance and/or speed profile (310) the temporal and/or spatial distance (301) of the vehicle (100) to a front vehicle (200) driving in front of the vehicle (100) and/or the driving speed (301) of the vehicle (100) as a function of driving progress (302); and or - the predicted distance and/or speed curve (310), based on the current driving progress, extends over a predefined prediction horizon: and/or - the driving progress (302) includes, - a position of the vehicle (100) along a roadway (202) traveled by the vehicle (100); and or - a time when the vehicle is traveling (100). Method (400) for controlling the sailing operation of a vehicle (100) as part of distance and/or speed control of the vehicle (100); wherein the method (400) comprises, - Predicting (401), based on a current driving progress of the vehicle (100), a distance and/or speed profile (310) of the vehicle (100) in sailing operation; - Comparing (402) the predicted distance and/or speed profile (310) of the vehicle (100) with a tolerance band limit (332, 333) of a tolerance band (335) around a target distance (331) and/or around a target speed (331). Distance and/or speed control of the vehicle (100); and - Controlling (403), in particular starting or ending, the sailing operation depending on the comparison.

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