Method and device for acceleration of a motor vehicle

Abstract

A device for controlling a coasting operation of a vehicle in the range and / or speed regulation of the vehicle is described. The device is arranged to determine that the vehicle has an actual driving speed lower than a target speed of the distance and / or speed regulation and / or a target distance higher than an actual distance of the distance and / or speed regulation from the preceding vehicle when exiting the coasting mode. The device is further arranged to, in response thereto, cause a coasting exit acceleration of the vehicle that is reduced relative to a standard acceleration of the distance and / or speed adjustment in order to bring the actual speed closer to the target speed and / or to bring the actual distance closer to the target distance.

Description

Technical Field

[0001] The present invention relates to a motor vehicle which is designed to operate in a coasting mode. In particular, the present invention relates to a method and a corresponding device for accelerating a motor vehicle when exiting a coasting mode. Background Art

[0002] A vehicle with an internal combustion engine can be designed to temporarily decouple the internal combustion engine from the drive train of the vehicle during driving and, if necessary, separate it to reduce the energy consumption of the vehicle. In other words, the vehicle can be designed to temporarily run in a coasting mode while driving. Summary of the invention

[0003] The present document is concerned with the technical task of enabling a particularly comfortable coasting operation of a vehicle to be achieved in an efficient manner, in particular in conjunction with distance and / or speed control of the vehicle.

[0004] This object is solved by each of the independent claims. Advantageous embodiments are described in particular in the dependent claims. It should be noted that the additional features of the patent claims that are dependent on the independent patent claim, if they do not have the features of the independent patent claim or are combined with only a subset of the features of the independent patent claim, can form an independent invention that is independent of the combination of all features of the independent patent claim and can become the subject of an independent claim, a divisional application or a subsequent application. The same applies to the technical teachings described in the specification, which can constitute inventions independent of the features of the independent patent claim.

[0005] According to one aspect, a (control) device for controlling a coasting operation of a (motor) vehicle within the scope of a distance and / or speed control of the vehicle is described. During the operation of the distance and / or speed control, the driving speed can be automatically adapted, in particular adjusted (to a target distance and / or target speed), according to a target distance to a preceding vehicle traveling (directly) in front of the vehicle and / or (in free travel) according to a target speed (determined by the driver).

[0006] The device can be configured to decouple a drive motor (in particular an internal combustion engine) of the vehicle from the drive train of the vehicle (and, if necessary, deactivate the drive motor) in order to start a coasting operation. Alternatively or additionally, the device can be configured to couple the drive motor to the drive train of the vehicle (and, if necessary, activate the drive motor) in order to end the coasting operation. In the coasting operation, the vehicle can be driven slowly without being affected by the drive torque and / or the drag torque of the drive motor.

[0007] During the coasting operation of the vehicle, the drive motor of the vehicle usually does not generate a driving torque. If necessary, no braking torque (by one or more friction brakes of the vehicle) may be generated during the coasting operation. Therefore, active distance and / or speed regulation may not be possible during the coasting operation. However, it can be monitored here that during the coasting operation, the distance of the vehicle relative to the vehicle in front remains within a predefined tolerance band around the target distance and / or the driving speed of the vehicle remains within a predefined tolerance band around the target speed. Outside the coasting operation, active distance and / or speed regulation (to the target distance or target speed) can be performed. In particular, it can be caused here that the distance and / or driving speed can be set to the target distance or target speed immediately after the coasting operation ends.

[0008] The device is configured to determine that the vehicle has an actual driving speed that is lower than the target speed for the distance and / or speed regulation (e.g. 5% or more, or 10% or more) when exiting the coasting operation (in particular when exiting the coasting operation) and / or has an actual distance to the vehicle ahead that is higher than the target distance for the distance and / or speed regulation (e.g. 5% or more, or 10% or more). This can be determined based on sensor data from one or more environmental sensors (e.g. from a radar sensor) and / or from one or more state sensors (e.g. from a speed sensor).

[0009] Therefore can identify when the vehicle exits coasting mode has for distance and / or speed regulation too low driving speed and / or too high distance.In this situation, can not refer to coasting mode when in the scope of distance and / or speed regulation, cause standard acceleration.

[0010] In particular, the device can be configured to repeatedly detect within the scope of distance and / or speed control (if no coasting exit has been performed within a certain previous time period or within a certain previous driving distance) that the actual speed is below the target speed and / or the actual distance is above the target distance. In response thereto, a standard acceleration can then be initiated in order to adjust the actual speed, in particular to the target speed, and / or the actual distance, in particular to the target distance. In the case of distance and / or speed control, a standard acceleration can therefore be initiated in a standard manner in order to keep the vehicle at the target speed and / or the target distance.

[0011] The standard acceleration brought about within the scope of the distance and / or speed control can depend on a measure of the deviation between the actual speed and the target speed and / or a measure of the deviation (ie the difference) between the actual distance and the target distance.

[0012] The device can be configured to repeatedly determine the difference between the actual speed and the target speed and / or the difference between the actual distance and the target distance within the scope of the distance and / or speed control (if no coasting exit has occurred within a certain previous time period or within a certain previous travel distance). The value of the standard acceleration can then be determined based on the corresponding difference, in particular using a predefined and / or stored association between the value of the standard acceleration and the difference. In this case, the value of the standard acceleration typically increases as the difference increases. This can result in a particularly reliable distance and / or speed control.

[0013] The device can be configured to (deviate from the standard operation of the distance and / or speed control) cause a coasting exit acceleration of the vehicle when exiting the coasting operation that is reduced relative to the standard acceleration of the distance and / or speed control in order to bring the actual speed closer to the target speed and / or bring the actual distance closer to the target distance. The coasting exit acceleration can be lower than the standard acceleration by 10% or more, in particular by 20% or more.

[0014] In particular, the device can be configured to cause a (reduced) coasting exit acceleration of the vehicle for a predefined driving range immediately after exiting the coasting mode. After the predefined driving range, a standard acceleration for distance and / or speed control can then be caused. The driving range can be a certain time period (e.g. 1 second or longer and / or 10 seconds or less) after the exit time of the coasting mode. Alternatively or in addition, the driving range can be a certain driving distance (e.g. 10 meters or more and / or 100 meters or less) after the exit position of the coasting mode.

[0015] As described above, the value of the standard acceleration can depend on the difference between the actual speed and the target speed and / or on the difference between the actual distance and the target distance. In a corresponding manner, the value of the coasting exit acceleration can also depend on the difference between the actual speed and the target speed and / or on the difference between the actual distance and the target distance. In this case, the device can be configured to (directly) cause the coasting exit acceleration in the driving process area after exiting the coasting operation with a value that is smaller than the corresponding value of the standard acceleration at least for a part of the driving process area or for the entire driving process area (for example, smaller than the corresponding value of the standard acceleration by 10% or more, in particular by 20% or more).

[0016] Therefore, a device is described, which is set up in the scope of distance and / or speed control to selectively bring about a coasting exit acceleration that is reduced compared to a standard acceleration during coasting exit. Thus, the comfort of distance and / or speed control can be improved in an effective manner.

[0017] The coasting exit acceleration caused by the device can be designed so that the actual driving speed immediately after the coasting operation is exited, in particular for the (entire) predefined driving range immediately after the coasting operation is exited, is substantially free of shock. The shock typically corresponds to the second (time) derivative of the driving speed of the vehicle. The coasting exit acceleration can be such that the shock is less in magnitude than a predefined shock threshold value (over the entire driving range). The shock threshold value can be below the limit that can be noticed by humans.

[0018] In particular, the device can be configured to ascertain the actual driving speed of the vehicle in a certain range (of time and / or distance) before and / or at an exit from a driving process at which the exit from the coasting mode takes place.

[0019] The coasting exit acceleration can then be determined based on the determined curve of the vehicle's actual driving speed, in particular so that the vehicle's actual driving speed (directly) has essentially no impact (for example, is below an impact threshold in terms of magnitude) when exiting the driving process (if necessary for the entire predefined driving process range).

[0020] By causing a shock-free acceleration after the coasting exit, a particularly comfortable distance and / or speed control can be achieved.

[0021] The device can be configured to predict the distance and / or speed profile of the vehicle in the coasting operation based on the current driving process of the vehicle (e.g., starting from the current time point and / or starting from the current position). The predicted distance and / or speed profile can show the time distance and / or spatial distance of the vehicle relative to a preceding vehicle (directly) traveling in front of the vehicle and / or the driving speed of the vehicle as a function of the driving process (starting from the current driving process). In this case, the predicted distance and / or speed profile can be extended based on the current driving process to a predefined prediction level.

[0022] The driving progress may show or correspond to the position of the vehicle along the road driven by the vehicle. Alternatively or additionally, the driving progress may show or correspond to the corresponding point in time when the vehicle is driving. Thus, the prediction level may correspond to a certain distance and / or time level (e.g., 100 meters or more, or 500 meters or more; or 10 seconds or more, or 20 seconds or more).

[0023] The device can be configured to determine the gradient profile of the road on which the vehicle is traveling (for a prediction level). This information can be determined based on a digital map of the road network on which the vehicle is traveling. The distance profile and / or speed profile of the vehicle in the coasting mode can then be predicted in a precise manner based on the gradient profile.

[0024] The device can also be configured to determine status data related to the status of the vehicle (e.g., the current driving speed) and / or status data related to the status of a preceding vehicle traveling in front of the vehicle (e.g., the current driving speed). Based on the status data, the distance curve and / or speed curve of the vehicle in the coasting operation can then be predicted in a particularly accurate manner.

[0025] When predicting the distance and / or speed trend of the vehicle, it can be assumed that the vehicle is in coasting mode during the entire prediction level. In addition, assumptions can be made about the behavior of the vehicle ahead during the prediction level. For example, it can be assumed that the driving speed of the vehicle ahead remains constant during the entire prediction level.

[0026] The device is also configured to compare the predicted distance trend and / or speed trend of the vehicle with a target distance or with a distance threshold value above the target distance. Alternatively or in addition, the device can be configured to compare the predicted distance trend and / or speed trend with a target speed for a distance and / or speed regulation of the vehicle or with a speed threshold value below the target speed. In this case, for example, the following can be determined within the scope of the comparison:

[0027] A driving course segment in which the predicted distance profile and / or speed profile remains within a predefined tolerance band around a target distance and / or around a target speed; and / or

[0028] A driving process in which the predicted distance and / or speed curve reaches a target distance or distance threshold value or a target speed or speed threshold value (and optionally subsequently exceeds or falls below it).

[0029] The coasting operation can then be controlled, in particular started or ended, based on the comparison, in particular based on the determined driving course segment and / or based on the determined driving course. Thus, a particularly energy-saving and comfortable coasting 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 coasting operation, a target distance and / or target speed can be deviated from at least temporarily and / or within a determined tolerance band. The tolerance band or the corresponding threshold value can be, for example, ±5% or less, or ±10% or less of the target distance or target speed.

[0030] 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 comprises a (control) device described in the present document.

[0031] According to another aspect, a method for controlling a coasting operation of a vehicle within the context of a distance and / or speed regulation of the vehicle is described. The method comprises determining that the vehicle has an actual driving speed below a target speed of the distance and / or speed regulation and / or an actual distance relative to a preceding vehicle above a target distance of the distance and / or speed regulation when exiting the coasting mode. The method further comprises, in response thereto, inducing a coasting exit acceleration of the vehicle that is reduced relative to a standard acceleration of the distance and / or speed regulation in order to bring the actual speed closer to the target speed and / or bring the actual distance closer to the target distance.

[0032] According to another aspect, a software (SW) program is described. The SW program can be arranged to be executed on a processor (eg on a controller of a vehicle) and thereby to perform the method described in this document.

[0033] According to another aspect, a storage medium is described. The storage medium may include a SW program configured to be executed on a processor and thereby perform the method described herein.

[0034] It should be noted that the methods, devices and systems described herein can be used alone or in combination with other methods, devices and systems described herein. In addition, any aspects of the methods, devices and systems described in this document can be combined with each other in a variety of ways. In particular, the features of the claims can be combined with each other in a variety of ways. In addition, the features listed in brackets should be understood as optional features. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In addition, the present invention is further described in more detail based on embodiments. The accompanying drawings show:

[0036] Figure 1 exemplary components of a vehicle;

[0037] Figure 2a An exemplary driving situation of a vehicle is shown;

[0038] Figure 2b An exemplary grade profile of a road is shown;

[0039] Figure 3 showing an exemplary coasting behavior; and

[0040] Figure 4 A flow chart illustrating an exemplary method for acceleration of a vehicle. DETAILED DESCRIPTION

[0041] As mentioned at the outset, the present document relates to increasing the comfort of coasting operation of a motor vehicle. In this context, Figure 1An exemplary vehicle 100 is shown. The vehicle 100 includes one or more environmental sensors 102 (e.g., at least one camera, radar sensor, lidar sensor, and / or ultrasonic sensor) configured to detect environmental data (i.e., data sensors) about the environment of the vehicle 100. Furthermore, the vehicle 100 includes one or more vehicle sensors 106 configured to detect state data (i.e., sensor data) related to the state of the vehicle 100 (e.g., related to the driving speed).

[0042] The (control) device 101 of the vehicle 100 can be configured to operate a drive motor 103 (in particular an internal combustion engine) of the vehicle 100 as a function of environmental data and / or as a function of status data in order to at least partially automatically guide the vehicle 100 longitudinally. In this case, in particular, an automatic distance and / or speed control (in particular ACC, adaptive cruise control) can be effected, wherein the driving speed of the vehicle 100 is automatically adjusted in order to adjust the distance of the vehicle 100 to a preceding vehicle traveling directly in front of the vehicle 100 to a target distance (which has been determined, for example, by the driver of the vehicle 100) and / or in order to adjust the driving speed of the vehicle 100 during free driving (without a preceding vehicle) to a target speed (which has been determined, for example, by the driver of the vehicle 100).

[0043] Figure 2a An exemplary driving situation is shown, in which the vehicle 100 is traveling behind the vehicle 200 in front on a road 202. The distance 201 between the vehicle 100 and the vehicle 200 in front is adjusted by the device 101 of the vehicle 100 to a determined target distance. Here, the distance 201 may be a spatial distance corresponding to the spatial spacing (e.g., measured in meters) between the vehicle 100 and the vehicle 200 in front. Alternatively or additionally, the distance 201 may be a temporal distance corresponding to the time necessary for the vehicle 100 to reach the vehicle 200 in front at the current driving speed (assuming that the vehicle 200 in front is stationary). The temporal distance may, 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 200 in front.

[0044] The (control) device 101 can be configured to operate the vehicle 100 at least temporarily in a so-called coasting mode 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 one or more driven wheels of the vehicle 100. In addition, the drive motor 103 can be deactivated and / or disengaged. The vehicle 100 then drives slowly (without drag torque and / or without drive torque of the drive motor 103) on the road 202 driven by the vehicle 100. As a result, the energy consumption of the vehicle 100 can be reduced.

[0045] The vehicle 100 may include a position sensor 104, which is configured to detect position data (i.e., sensor data) related to the corresponding current position of the vehicle 100. The position data may include, for example, coordinates of a global navigation satellite system (GNSS), such as GPS coordinates. The device 101 may be configured to determine the spatial course of the road 202 on which the vehicle 100 is to travel based on the position data and based on a digital map of the road network on which the vehicle 100 is to travel. If necessary, a driving route can be planned through the road network according to the navigation system of the vehicle 100. Based on the driving route, it can be identified which road 202 the vehicle 100 will travel along starting from the current time point and / or starting from the current position. In addition, the spatial course of the road 202 ahead, in particular the slope course, can be determined based on the digital map.

[0046] Figure 2b An exemplary grade curve 210 of a road 202 driven by vehicle 100 is shown. Grade curve 210 shows a grade 212 of road 202 as a function of a position on road 202 and / or as a function of a point in time during driving (generally as a function of the driving progress of vehicle 100).

[0047] The device 101 can be configured to predict the distance and / or speed of the vehicle 100 in the coasting mode based on the gradient 210 of the road ahead 202. The distance profile can show the (temporal and / or spatial) distance 201 of the vehicle 100 from the vehicle 200 ahead as a function of position and / or as a function of time (usually as a function of the driving process). The speed profile can show the driving speed of the vehicle 100 as a function of position and / or as a function of time (usually as a function of the driving process). It can be assumed that the vehicle 100 is traveling in the coasting mode (not influenced by the drive and / or braking torque generated by the vehicle 100). In addition, a certain speed behavior of the vehicle 200 ahead can be assumed (in order to determine the distance profile); for example, it can be assumed that the vehicle 200 ahead will travel at a constant driving speed. The distance profile and / or speed profile can be predicted, for example, for a spatial prediction level (starting from the current position of the vehicle 100) of 50 meters or more, or 100 meters or more, and / or for a temporal prediction level of 5 seconds or more, or 10 seconds or more.

[0048] The activation (also referred to as entering) and / or deactivation (also referred to as exiting) of the coasting operation of the vehicle 100 can be carried out in a precise and energy-saving manner (when a distance and / or speed controller is used) based on a predicted distance profile and / or based on a predicted speed profile. In particular, the device 101 of the vehicle 100 can be configured (during operation of the distance and / or speed controller) to predict the distance profile and / or speed profile of the vehicle 100 during the coasting operation starting from the current position of the vehicle 100 and / or starting from the current point in time (usually starting from the current driving process). Then, entry into or exit from the coasting operation can be realized based on the predicted distance profile and / or speed profile.

[0049] The device 101 can be configured to cause a standard acceleration during operation of the distance and / or speed controller if it is detected that the actual distance 201 is greater than the target distance and / or the actual driving speed is less than the target driving speed. The standard acceleration can have a certain standard acceleration value for accelerating the vehicle 100. The acceleration can be achieved by the drive motor 103 of the vehicle 100.

[0050] Figure 3 An exemplary predicted distance and / or speed profile 310 is shown during the coasting operation of the vehicle 100. As already explained, the distance profile and / or speed profile 310 shows the actual distance and / or actual speed 301 of the vehicle 100 as a function of the driving progress 302 of the vehicle 100 (e.g., position and / or time point) while the vehicle 100 is traveling.

[0051] Figure 3 Also shown is an exemplary tolerance band 335 around target distance and / or target speed 331 having a lower threshold 333 and an upper threshold 332 enclosing target distance and / or target speed 331 . Figure 3 In particular, a tolerance band 335 around the target speed 331 is shown (for speed regulation after exiting taxi operation). The aspects described in this document are applicable to distance control after stopping taxiing.

[0052] The device 101 can be configured to determine, based on the predicted distance trend and / or speed trend 310, that the predicted distance trend and / or speed trend 310 intersects with the thresholds 332, 333 of the tolerance band 335 at the intersection driving process 321 (in particular, the lower threshold 333 of the speed tolerance band 335 and / or the upper threshold 332 of the distance tolerance band 335).

[0053] The device 101 may also be configured to exit the coasting operation at an exit driving process 323, where the exit driving process 323 is a certain offset value 332 before the intersection driving process 321. The vehicle 100 may have an actual driving speed 301 lower than the target speed 331 (and / or have an actual distance 301 higher than the target distance 331) at the exit driving process 323.

[0054] Device 101 can be configured to cause an acceleration of vehicle 100 within the scope of distance and / or speed control after exiting the coasting mode (immediately) in order to accelerate vehicle 100 to target speed 331 and / or cause vehicle 100 to have target distance 331. A standard acceleration of distance and / or speed control can be used here, thereby causing Figure 3 The speed trend 311 shown in FIG.

[0055] The user of the vehicle 100 may feel that the relatively high standard acceleration caused immediately after the coasting is uncomfortable. In particular, the standard acceleration may cause an unpleasant shock.

[0056] The device 101 can be configured to bring about a coasting exit acceleration which is reduced relative to a standard acceleration immediately after the coasting operation within the scope of the distance and / or speed control, so that, for example Figure 3 312 (or distance curve) shown in FIG. In particular, a coasting exit acceleration can be induced, thereby avoiding a (noticeable) jerk of vehicle 100. The coasting exit acceleration can be such that, in particular, during the coasting exit and in a certain phase immediately after the coasting exit (i.e., in a certain driving process area 325), the second-order derivative of the driving speed of vehicle 100 is substantially zero. Thus, a particularly comfortable coasting exit can be induced.

[0057] At the end of the gliding process, the actual driving speed 301 of the vehicle 100 may be at the lower end 333 of the tolerance band 335 (for example, due to incorrect mapping and / or due to an incorrect prediction of the distance and / or speed curve 310). Therefore, after the end of the gliding process, it is accelerated again to the set speed 331 for longitudinal guidance. A regular acceleration process using standard acceleration would result in a noticeable shock, which can be felt by the user of the vehicle 100 and / or can warn the user of the gliding process (so that the gliding process is no longer inadvertently embedded in the driving operation of the vehicle 100).

[0058] As explained herein, when a gliding process ends at an actual driving speed 301 that is lower than a target speed 331, a reduced gliding exit acceleration can be caused within a determined (adjustable) driving process area 325 (e.g., within a determined time period) to reach the target speed 331 so that the transition from gliding to free driving is particularly comfortable.

[0059] Figure 4 A flow chart of a (computer-implemented) method 400 for controlling a coasting operation of a vehicle 100 within the scope of a distance and / or speed control of the vehicle 100 is shown. Within the scope of the distance and / or speed control, the actual speed 301 of the vehicle 100 (during free travel) can be adjusted, in particular adjusted to a determined target speed 331. Alternatively or additionally, the actual distance 301 of the vehicle 100 from the preceding vehicle 100 (during a subsequent journey) can be adjusted, in particular adjusted to a determined target distance 331. In this case, when the target speed 331 is undershot and / or when the target distance 331 is exceeded, a determined standard acceleration of the vehicle 100 can be achieved in order to achieve a control of the driving speed 301 and / or the distance 301.

[0060] The standard acceleration may be stored in a storage unit of the vehicle 100 and / or determined for the operation of the distance and / or speed regulation. The value of the standard acceleration may depend on the difference between the actual speed 301 and the target speed 331 and / or on the difference between the actual distance 301 and the target distance 331. The value of the standard acceleration may increase as the magnitude of the difference increases. The functional relationship between the difference and the standard acceleration value may be stored in a storage unit of the vehicle 100.

[0061] Method 400 includes determining 401 that vehicle 100 has an actual driving speed 301 when exiting coasting mode that is below target speed 331 for distance and / or speed regulation, and / or an actual distance 301 from a preceding vehicle 200 that is above target distance 331 for distance and / or speed regulation. In this case, if necessary, a value for the difference between actual speed 301 and target speed 331 and / or between actual distance 301 and target distance 331 when exiting coasting mode (particularly when exiting driving process 323) can be ascertained.

[0062] Method 400 also includes, in response to the determination, inducing 402 a reduced coasting exit acceleration of vehicle 100 relative to a standard acceleration regulated for distance and / or speed in order to bring actual speed 301 closer to target speed 331 and / or bring actual distance 301 closer to target distance 331. The reduced coasting exit acceleration may be induced for a determined driving course area 325 immediately following exiting driving course 323.

[0063] The value of the reduced coasting exit acceleration can here be lower than the value of the standard acceleration (for example 10% or more or 20% or more) (for a corresponding difference between actual speed 301 and target speed 331 and / or a corresponding difference between actual distance 301 and target distance 331).

[0064] The value of the standard acceleration may vary within driving progress region 325 (depending on the changing difference between actual speed 301 and target speed 331 and / or between actual distance 301 and target distance 331). The coasting exit acceleration may be selected so that the value of the coasting exit acceleration is lower than the value of the standard acceleration at least in a portion of driving progress region 325 or for the entire driving progress region 325 (e.g., 10% or more, or 20% or more).

[0065] By means of the measures described herein, the comfort of a coasting operation of the vehicle 100 in combination with a distance and / or speed regulator can be increased in an effective and robust manner.

[0066] The present invention is not limited to the exemplary embodiments shown. In particular, it should be noted that the description and drawings are only intended to illustrate the principles of the proposed methods, devices and systems by way of example.

Claims

1. A device (101) for controlling a coasting operation of a vehicle (100) within the scope of distance and / or speed regulation of the vehicle (100); wherein the device (101) is configured to: - determining that the vehicle (100) has an actual driving speed (301) and / or an actual distance (301) from the preceding vehicle (200) when exiting the coasting operation, the actual driving speed being lower than the distance and / or the target speed (331) of the speed regulation, and the actual distance being higher than the distance and / or the target distance (331) of the speed regulation; and - in response to the determination, causing a coasting exit acceleration of the vehicle (100) that is reduced relative to a standard acceleration adjusted for distance and / or speed so as to bring the actual speed (301) closer to the target speed (331) and / or so as to bring the actual distance (301) closer to the target distance (331).

2. The device (101) according to claim 1, wherein the device (101) is configured to: - immediately after exiting the coasting mode, causing the coasting exit acceleration of the vehicle (100) for a predefined driving range (325); and A standard acceleration that causes the distance and / or speed control after the predefined driving range (325).

3. A device (101) according to any of the preceding claims, wherein the coasting exit acceleration is constructed so that the actual driving speed (301) has essentially no impact immediately after exiting the coasting operation, in particular for a predefined driving process area (325) immediately after exiting the coasting operation.

4. The device (101) according to any one of the preceding claims, wherein the device (101) is configured to: - determining the trend of the actual driving speed (301) of the vehicle (100) before and / or in the region of an exit from a driving process (323), at which exit from the coasting mode is achieved; and - determining the coasting exit acceleration based on the determined course of the actual driving speed (301) of the vehicle (100), in particular so that the actual driving speed (301) of the vehicle (100) is substantially free of impact after the exit driving process (323).

5. The device (101) according to any one of the preceding claims, wherein the device (101) is configured to: - predicting a distance trend and / or a speed trend (310) of the vehicle (100) during the coasting operation; - determining an exit driving process (323) for exiting the coasting mode based on the predicted distance curve and / or speed curve (310); and - at the determined exit driving process (323), the coasting mode is exited.

6. The device (101) according to claim 5, wherein - the predicted distance trend and / or speed trend (310) shows the time distance and / or spatial distance (301) of the vehicle (100) from a preceding vehicle (200) travelling ahead of the vehicle (100) and / or the travelling speed (301) of the vehicle (100) as a function of the travelling progress (302); and / or The predicted distance and / or speed curve (310) is extended starting from the current driving process at a predefined prediction level: and / or - the driving process (302) includes: - the position of the vehicle (100) along a road (202) travelled by the vehicle (100); and / or - a point in time when the vehicle (100) is traveling.

7. The device (101) according to any one of claims 5 to 6, wherein the device (101) is configured to: - comparing the predicted distance profile and / or speed profile (310) with the target speed (331) or with a speed threshold (333) below the target speed (331); and / or - comparing the predicted distance profile and / or speed profile (310) with the target distance (331) or with a distance threshold (332) above the target distance (331); and - Based on the comparison, the exit driving process is determined (323).

8. The device (101) according to any of the preceding claims, wherein the device (101) is configured to repeat within the scope of the distance and / or speed regulation: - detecting that the actual speed (301) is lower than the target speed (331) and / or the actual distance (301) is higher than the target distance (331); and In response to the detection, the standard acceleration is caused in order to adjust the actual speed (301) to the target speed (331) and / or the actual distance (301) to the target distance (331).

9. The device (101) according to any of the preceding claims, wherein the standard acceleration is 10% or more, in particular 20% or more, higher than the coasting exit acceleration.

10. The device (101) according to any of the preceding claims, wherein the device (101) is configured to repeat within the scope of the distance and / or speed regulation: - determining a difference between the actual speed (301) and the target speed (331) and / or a difference between the actual distance (301) and the target distance (331); - determining the value of the standard acceleration as a function of the respective difference, in particular using a predefined correlation between the value of the standard acceleration and the difference; and - in a driving range (325) following the exit from the coasting mode, a coasting exit acceleration is caused which has a value which is smaller than a corresponding value of the standard acceleration at least for a part of the driving range (325) or for the entire driving range (325).

11. A method (400) for controlling a coasting operation of a vehicle (100) within the scope of distance and / or speed regulation of the vehicle (100); wherein the method (400) comprises: - determining (401) that the vehicle (100) has an actual driving speed (301) and / or an actual distance (301) from the preceding vehicle (200) when exiting the coasting operation, the actual driving speed being lower than the distance and / or the target speed (331) of the speed regulation, and the actual distance being higher than the distance and / or the target distance (331) of the speed regulation; and - In response to the determination, causing (402) a coasting exit acceleration of the vehicle (100) that is reduced relative to a standard acceleration adjusted for distance and / or speed so as to bring the actual speed (301) closer to the target speed (331) and / or bring the actual distance (301) closer to the target distance (331).

Images