Method for operating a motor vehicle, and damping system

Abstract

The invention relates to a method for operating a motor vehicle (16), in which the current position of the motor vehicle (16) and / or a ground unevenness (22) on a road (20) are / is ascertained by means of a data module, and in which at least one damping parameter for at least one wheel of the motor vehicle (16) is adjusted, by means of a damping device (12), for travelling over the ascertained ground unevenness (22), wherein a category is determined for the ground unevenness (22), and the at least one damping parameter is adjusted during a travelling-over interval depending on the category of the at least one damping parameter determined for the ground unevenness (22). The invention also relates to a damping system (10).

Description

[0001] Mercedes-Benz Group AG

[0002] Methods for operating a motor vehicle and damping system

[0003] The invention relates to a method for operating a motor vehicle according to the preamble of claim 1. Furthermore, the invention relates to a damping system.

[0004] Several systems are already known that, particularly through sensors and / or electronic control units, can detect uneven road surfaces and adjust corresponding damping systems on the vehicle accordingly. However, these systems lack, for example, a precise categorization of road surface irregularities and a specific adjustment of damping parameters according to specifications that take into account both driving comfort and / or safety.

[0005] From DE 41 12 007 A1, a chassis control system is known which comprises at least one damper, one side of which is connected to the vehicle body and the other side of which is directly or indirectly connected to at least one wheel unit. The damper characteristic can be changed depending on operating parameters, and means are provided which effect or enable the adjustment of the damper characteristic in operating phases of low damping forces of the damper.

[0006] The object of the invention is to provide a method and a damping system which dynamically enable the adjustment of motor vehicle parameters in the event of uneven ground.

[0007] This problem is solved by means of a method with the features of claim 1, and by means of a damping system according to the invention. Advantageous embodiments of the method according to the invention are to be regarded as advantageous embodiments of the damping system according to the invention, wherein the means of the damping system are used to carry out the method steps. Furthermore, advantageous developments of the invention are described by the dependent claims, the following description, and the figures.

[0008] A first aspect of the invention relates to a method for operating a motor vehicle, in particular a passenger car, especially with a corresponding and specially designed damping system, in which the current position of the motor vehicle and / or unevenness of the road surface are determined by means of a data module. The position is determined, for example, by a GPS module or another navigation device, wherein unevenness of the road surface can be detected by means of sensor devices or sensors such as cameras, radar sensors, and / or by a connection to a database.

[0009] Furthermore, the inventive method provides that at least one damping parameter for at least one wheel of the motor vehicle is adjusted by means of a damping device when driving over the determined unevenness of the road surface. The damping device is, in particular, a mechanical and / or hydraulic device or component, which is specifically designed to exert a controlled resistance against the vertical movements of the wheel during driving. The adjustable damping parameters may include, for example, damping stiffness, rebound damping, and / or compression damping. The damping parameters mentioned are examples and are in no way mandatory or limited to them.

[0010] To solve the problem of the invention, it is provided according to the invention that a category is determined for the unevenness of the ground and that, depending on the category determined for the unevenness, at least one damping parameter is adjusted during a driving interval. The adjustment of the at least one damping parameter, preferably the damping parameter, is carried out essentially in real time by, for example, a control device or an electronic computing device, which categorizes the unevenness based on the acquired data and thus decides how the damping parameter(s) should be adjusted. Thus, after the unevenness has been acquired or determined, it is assigned to a specific category from a multitude of predefined categories, such as "roller bumps" or "potholes".This category is determined based on dimensions such as length, height, and profile, as well as location and known data. For example, the damping stiffness could be reduced when a rumble strip is detected as such, in order to at least partially minimize the recoil on the vehicle body. This adjustment is tailored to the rumble strip's crossing and its category, particularly the crossing time, and is therefore carried out accordingly during the crossing interval (temporal aspect).

[0011] The categories of road surface irregularities can therefore be pre-stored in a database and updated as needed, for example, by external databases, particularly through the use of data modules and / or the internet or alternative wireless connections, but also during updates at a workshop and / or when connected to other external electronic computing devices via cable. Alternatively, these categories can be further refined using machine learning, algorithms, neural networks, or AI, by having the vehicle continuously collect and / or analyze new data when driving over identical and / or similar road surface irregularities while adhering to predefined dimensional tolerances. Furthermore, additional information about road surface irregularities can be obtained from traffic signs and / or known navigation information.Navigation paths or directly through the aforementioned sensor devices or sensors such as cameras, radar sensors, and / or lidar sensors, and / or others, are captured and processed in real time (live), thereby refining the categorization over time and / or with use. This information / data / categories can then be used to adjust the damping parameters accordingly to the detected category of road surface irregularity, allowing the vehicle to react very precisely yet flexibly to the respective driving situation. In other words, the adjustment of the damping parameters can also be further refined by applying data from external databases, learning, algorithms, neural networks, or AI, enabling an even more targeted response to different road surface irregularities.Finally, it would also be possible to integrate user feedback into both the adjustment of damping parameters and the categorization of road surface irregularities. This could be done, for example, via vehicle interfaces where the user specifies their preferences regarding comfort or driving behavior, which are then taken into account in the respective adjustments, and especially by displaying limit values ​​and / or hazards in the settings.

[0012] In other words, during the crossing interval, a short-term change or adjustment of the damping parameter should be carried out, which is precisely and specifically tailored to the detected category of unevenness and in particular enables a smoother crossing, e.g. to minimize strong recoils during the crossing.

[0013] A particularly advantageous aspect of the proposed design is its targeted adaptation to improve occupant comfort by reducing unpleasant shocks. Simultaneously, safety is enhanced because the vehicle maintains contact with the road surface, resulting in increased stability and preventing slippage. The crossing interval refers to the period during which the wheel, or specifically the wheels of an axle, travels over the precisely measured road surface irregularity.

[0014] After completion of the pass interval, the damping parameter(s) are reset to normal operation.

[0015] It is therefore also provided for in the invention, and thus an important safety aspect, that after driving over the uneven road surface, the damping parameters are returned to their original state, or the adjustment is reset, as intended for normal operation of the vehicle. This return ensures that the vehicle can continue to be driven safely under standard conditions and thus prevents undesirable driving characteristics such as underdamped wheel suspensions and / or reduced driving stability. The return to the original damping parameters ensures that the damping system operates safely. In summary, the dynamic adjustment of the damping parameters during driving over the surface enables an essentially immediate response to various types of uneven road surfaces, preferably rumble strips, and improves comfort without compromising the safety of the vehicle.After the crossing, the damping parameters are reset to avoid impairing the vehicle's driving safety.

[0016] In an advantageous embodiment of the invention, at least one damping parameter is adjusted by reducing the damping stiffness during the crossing interval. This reduction is targeted and tailored to the category of road unevenness in order to at least partially minimize the effects of the unevenness on the vehicle or its structure, thereby reducing unpleasant jolts and vibrations for the vehicle occupants. The damping stiffness can be controlled, for example, by a hydraulic and / or electronic control of the aforementioned damping system, thereby allowing control of tensile and compressive forces.

[0017] The changes / adjustments to the damping parameters, especially depending on the category, particularly depending on the category "vibrating threshold", are intended to provide or activate a "special soft setting" for a limited time.

[0018] This special setting describes a temporary change / adjustment, for example, to the stiffness of the vehicle's adjustable suspension and / or damping (change in damping parameters), which is essentially precisely tailored to driving over uneven road surfaces, especially bumps. The damping stiffness is specifically reduced so that the suspension reacts more softly to the uneven road surface / bumper, minimizing its effects on the vehicle body and occupants. The special setting is activated only during the defined crossing interval. This crossing interval therefore only encompasses the time in which the vehicle drives over the uneven road surface, possibly with a predefined tolerance, and is also controlled based on driving conditions such as speed and / or suspension travel.After the crossing is completed, the damping parameters and thus the suspension and / or damping are automatically reset to the normal operating position in order to sufficiently dampen wheel vibrations and thus ensure stable driving on level roads.

[0019] In a further advantageous embodiment of the invention, the damping stiffness is reduced beyond the normal damping range. This is achieved by controlling the damping system, which accordingly enables an extreme soft setting or a special soft setting.

[0020] In the normal damping range, the damping parameters or the suspension are adjusted within a predefined safety range to absorb typical road irregularities and thereby ensure the vehicle's stability. Depending on OEM specifications, an intermediate balance is achieved, for example, between comfort and controlled, adaptable vehicle dynamics, with driving safety being the primary consideration. Therefore, changes and / or adjustments to the damping parameters that exceed the predefined safety range are not suitable for normal vehicle operation.

[0021] The special damping setting is a temporary and targeted adjustment outside the normal damping range, primarily to further decouple the vehicle's vertical movement and better absorb the impact from uneven road surfaces or speed bumps. This special damping setting is activated only for the duration of the crossing interval, which begins, for example, before contact with the uneven road surface and ends after the crossing is complete. According to the invention, this ensures that the vehicle automatically returns to the normal damping range after crossing the bump, thereby restoring stability on level roads. In other words, this temporary adjustment prevents the special damping setting from leading to undesirable driving characteristics, such as excessive oscillation and / or unstable driving dynamics.

[0022] In a further advantageous embodiment of the invention, a road surface irregularity categorized as a rumble strip has a length of 40 cm or less, in particular 35 cm or less, preferably 30 cm or less, and / or a height of 8 cm or less, in particular 6 cm or less, preferably 5 cm or less. These precise dimensions enable reliable and predefined categorization and a corresponding adjustment of the at least one damping parameter. These sizes or dimensions serve only as an example of a preferred category and are by no means mandatory. Other categories with differing sizes, such as potholes or larger road undulations, can also be defined to allow for a corresponding adjustment of the damping parameters to different situations.The different categories also make it possible for the present invention to be used in a variety of ways and, in particular, to adapt to a variety of uneven ground and thus road conditions.

[0023] In a further advantageous embodiment of the invention, the current position of the vehicle and / or the unevenness of the ground is determined by means of a data module configured as a navigation device with a database, and / or as a backend, and / or as a database containing historical measurements, and / or as an optical detection device, and / or as a sensor device. These configurations of the data module make it possible, for example, to precisely determine the position of the vehicle relative to the unevenness of the ground. Simultaneously, the precise position of the unevenness of the ground itself can be detected or retrieved from an existing database. Based on the distance between the vehicle and the unevenness of the ground, categorization can also be performed in advance, using stored or real-time acquired information.Alternatively, road irregularities can also be detected in the immediate vicinity of the vehicle by the aforementioned sensor devices while driving. These options—both pre-detection and immediate detection—allow for rapid categorization, enabling the damping parameters to be adjusted to the specific driving situation as quickly as possible.

[0024] In a further advantageous embodiment of the invention, it is provided that a speed limit at the location of the road surface is determined using traffic sign recognition. Traffic sign recognition is performed, in particular, by an optical detection device, such as a camera, which detects or records traffic signs and analyzes them, for example, using image processing algorithms. Furthermore, traffic sign recognition or speed determination could also be based on external or stored data. In a further advantageous embodiment of the invention, it is provided that at least one damping parameter is adjusted depending on the deviation of the actual speed of the motor vehicle from the determined speed limit and / or the speed of the motor vehicle is adjusted before the vehicle crosses the surface. Here, the actual speed of the motor vehicle is first determined, which, for example,The actual speed can be determined by a corresponding vehicle device and / or by a component of the damping system. The actual speed is then compared with a determined speed, for example, from traffic sign recognition or the navigation system. A particularly comfortable passage over a rumble strip using the special setting can thus be made dependent on compliance with the permitted speed.

[0025] Additionally, it is planned that a dependency on the speed will be used before the crossing over the unevenness of the ground, in particular to set damping parameters corresponding to the speed.

[0026] In a further advantageous embodiment of the invention, the crossing interval is initiated at a predetermined start time (t_Start) before the road surface irregularity is reached and / or upon reaching the target position. Starting before the road surface irregularity is reached offers the advantage of providing sufficient time to adjust the damping parameters in a timely manner. For example, at higher speeds, the adjustment might start too late, as the time between detecting the road surface irregularity and actual contact with it is shorter. Pre-adjusting the parameters thus ensures that the special swerve setting is fully activated before the vehicle encounters the road surface irregularity, allowing the suspension and / or damping to react to the specific conditions of the vehicle.A start time precisely, substantially precisely, or within a very small time tolerance, upon reaching the position of the uneven ground, minimizes the duration of use of the special switch position. This is particularly advantageous if the uneven ground and / or its position are already known and the damping parameters can be adjusted very quickly. This design reduces unnecessary changes to the damping parameters by the damping system, as the special switch position remains active only as long as absolutely necessary.

[0027] In a further advantageous embodiment of the invention, the start time is determined based on the implementation time required to adjust at least one damping parameter and / or on the vehicle's speed. The implementation time refers in particular to the time or time interval that, for example, the damping system requires to fully adjust or implement the damping parameters to the special setting. This time can vary depending on the design of the damping system, for example, due to the reaction speed of the hydraulic and / or mechanical components. Furthermore, safety factors, the acquisition of additional parameters, and computing power could also influence the required time. The longer the implementation time, the earlier the start time must be selected so that the adjustment is completed before the road surface irregularity is reached.The vehicle's speed can also be adjusted here. At higher speeds, the time between detecting the road surface irregularity and driving over it decreases, requiring an earlier start time to complete the adjustment in time. At lower speeds, however, the start time can be closer to the position of the irregularity, as more time is available to complete the adjustment.

[0028] By taking into account both the execution time and / or the speed, it is possible to ensure that the adjustment of the damping parameters is coordinated with the crossing and that the special switch position is used for the shortest possible time.

[0029] In an advantageous embodiment of the invention, the crossing interval is terminated at a predetermined end time (t_end), which occurs during or after the crossing. The selection of this end time ensures that the special damping parameter settings remain active only as long as they are actually needed for the crossing. The end time can be determined, for example, based on the vehicle's speed and the duration of the crossing interval. At higher speeds, the crossing interval becomes shorter because the road surface irregularity is traversed more quickly. Accordingly, the end time must be chosen closer to the position of the irregularity. At lower speeds, the crossing interval can be maintained for a longer period because the crossing takes correspondingly longer. Additionally, the end time can be determined, for example, by adjusting the damping parameters.For example, if a peak of the unevenness of the ground, and thus the highest point of a vibration threshold, is reached, the special switch position can be deactivated after passing over this point at the end time defined at this location.

[0030] In an advantageous embodiment of the invention, the end point is determined at a point in time when a parameterizable spring travel is exceeded. Softer damping can help to improve comfort during compression, while firmer damping is required afterwards to control the spring's return movement and, in particular, to prevent rebound.

[0031] Additionally or alternatively, the end point can be determined at a crest or apex of the road surface irregularity. In other words, the damping stiffness can be changed at the crest of the irregularity, as this point marks the transition between ascent and descent, or the upward and downward movement of the wheels or suspension. At the crest, the vertical movement of the suspension briefly comes to a standstill before the wheel suspension begins to return to its normal travel. When the crest of a road surface irregularity, i.e., the highest point of a rumble strip, is reached, the damping system detects this point, for example, by analyzing the vertical movements of the wheels or suspension. At this crest, the vertical movement of the suspension briefly comes to a standstill before the vehicle begins to return to its normal travel.This is determined, for example, by monitoring the suspension travel data and its changes over time. The point at which the apex is reached also depends on factors such as the length of the road surface irregularity and the vehicle's speed. Based on the vehicle's speed, the system calculates when the highest point of the irregularity will be reached, particularly considering the known length of the irregularity. Once this point has been passed and the vehicle begins to leave the irregularity (the path taken from the apex), the special swerve setting can be deactivated, as adjusting the damping parameters for the remainder of the crossing is no longer necessary.

[0032] Additionally or alternatively, the end time can also be determined within a middle time range of the crossing interval. This makes it possible, for example, to limit the damping parameters over time and adjust them only during a relevant phase of the crossing to the unevenness of the road. This means that the special switch setting is not active immediately at the beginning or until the end of the interval, but is only activated for a central section within the crossing interval. This central section is specifically limited to the time required to cross the crest of the curve.

[0033] A second aspect of the invention relates to a damping system for a motor vehicle, which is configured to operate a method according to the first aspect. The damping system comprises a damping device that is directly coupled to the chassis of the motor vehicle and / or to the wheels and can control the vertical movements of the motor vehicle. The damping device has adjustable parameters, such as rebound and compression damping, which can be individually regulated, for example, by separate valve systems, in particular to enable a specific or predetermined adaptation to different driving situations.

[0034] The system is designed to use a data module to determine the current position of the vehicle and / or the road surface irregularity in the direction of travel. A damping device on the chassis then adjusts at least one damping parameter for at least one wheel of the vehicle when it passes over the determined road surface irregularity. The data module can acquire data on road surface irregularities from both internal and external sources within the vehicle.

[0035] The damping system is controlled and / or regulated, in particular, by an electronic computing unit that receives incoming data from the data module as well as from various sensor devices or sensors, analyzes it, and / or uses it in real time to make necessary adjustments / changes to the damping parameters. These adjustments are transmitted, for example, as a signal to the damping device, which then implements them. In one possible configuration, the data module can also be the electronic computing unit itself. This electronic computing unit uses, for example, machine learning, algorithms, AI, or updatable software that considers information such as the vehicle's speed, position, and the category of detected road surface irregularities in order to adjust the damping stiffness according to specifications and categorization of the road surface irregularities to be traversed.

[0036] For further data acquisition, the damping system includes corresponding vehicle-internal sensor devices, such as vertical motion sensors designed to detect suspension travel and / or suspension travel speed, as well as radar sensors and / or optical detection devices like cameras that can detect unevenness in the road surface and analyze its dimensions, such as length, height, and width. Additionally, speed sensors determine the vehicle's current speed to enable time-based calculations, such as the start and end times of the crossing interval. Furthermore, traffic signs and / or external objects can also be detected using optical detection devices.

[0037] The damping system thus includes the data module (either as the electronic computing unit or coupled to it), through which information from external sources, such as navigation systems, traffic sign recognition, and backend databases, can be collected and / or combined. This data module, for example as part of or as the electronic computing unit, stores data on previously known road irregularities and makes this data available for control in real time.

[0038] Finally, the damping system includes all components required to carry out the process and the respective configurations and / or is electronically and / or wirelessly coupled to them.

[0039] Further advantages, features, and details of the invention will become apparent from the following description of a preferred embodiment and from the drawing. The features and combinations of features mentioned above in the description, as well as those mentioned below in the figure description and / or shown in the figure alone, can be used not only in the combinations specified, but also in other combinations or individually, without departing from the scope of the invention.

[0040] This shows:

[0041] Fig. 1 is a diagram illustrating a possible embodiment of a method for operating a motor vehicle in which a road surface irregularity is detected and a change in damping parameters is carried out.

[0042] In the figures, identical or functionally equivalent elements are provided with the same reference symbols.

[0043] Fig. 1 shows a diagram illustrating a method according to the invention for operating a motor vehicle 16, in which a damping system 10 and a data module detect a road surface irregularity 22, in particular a rumble strip, on a road 20 and adjust the damping parameters of the chassis 14 accordingly.

[0044] The system provides that a data module determines the current position of the vehicle 16 and / or a road surface irregularity 22 on a road 20 in direction X, and that a damping device 12 on the chassis 14 adjusts at least one damping parameter for at least one wheel of the vehicle 16 when the vehicle crosses the determined road surface irregularity 22. The data module can acquire the data about the road surface irregularity 22 from both internal and external sources within the vehicle.

[0045] According to the invention, a category is determined for the unevenness of the ground 22 and, depending on the category determined for the unevenness of the ground 22, at least one damping parameter is adjusted during a crossing interval.

[0046] The motor vehicle 16 thus comprises a chassis 14 with suspension travel sensors at each wheel that measure the vertical movements of the chassis. An electronic computing unit 26, coupled with the data module and / or a detection unit 18 and / or a sensor unit 24, analyzes the dimensions of the ground unevenness 22 (e.g., length, height) and motor vehicle data such as speed, and determines a category. Based on this, the computing unit 26 dynamically adjusts the damping stiffness and suspension of the chassis via the damping unit 12.

[0047] In other words, the damping parameters are changed by the electronic computing unit 26 in conjunction with the damping unit 12. The electronic computing unit 26 continuously analyzes the data provided by the detection unit 18 and / or the sensor unit 24, such as the dimensions of the categorized road surface irregularity 22, as well as the speed of the vehicle 16 and, for example, the current suspension travel. Based on this data, the electronic computing unit 26 calculates the necessary adjustments to the damping parameters, in particular the damping stiffness, and transmits corresponding control commands to the damping unit 12 on the chassis 14. The damping unit then carries out the physical changes or adjustments, for example, opening and / or closing valves to control the rebound and compression damping.

[0048] During the crossing interval, a distinction is made between normal damping and a special soft-stop setting. The special soft-stop setting is activated, in particular, before reaching the road surface irregularity 22 and deactivated, for example, after a crest of the irregularity 22 or when a parameterizable spring travel limit is exceeded, in order to control vertical movements and quickly return the chassis 14 to normal operation. The illustrated configuration shows how the damping system 10 reacts specifically to road surface irregularities 22, such as rumble strips, by allowing the spring rate and damping stiffness to be adjusted over time.

[0049] In other words, the detection device 18 recognizes the unevenness of the road surface 22, in particular the rumble strip, and transmits the corresponding data to the electronic computing unit 26. This unit analyzes the dimensions of the unevenness of the road surface 22, such as length and height, as well as the speed of the vehicle 16. Based on this information, a category of unevenness of the road surface, in this case "rumble strip," is determined, and the damping device 12 on the chassis 14 is controlled or adjusted depending on this category, in particular to adjust the damping stiffness and, if necessary, the suspension. Specifically, the system switches from a normal operating position to a special soft position in order to selectively control the vertical movement of the chassis 14 when driving over the rumble strip.

[0050] The special switch setting is activated and deactivated depending on temporal parameters, such as the crossing interval, as well as physical parameters, such as reaching the apex. The damping stiffness is controlled to ensure the most comfortable crossing possible while simultaneously preventing uncontrolled bouncing of the chassis 14 and, for example, wheel hop.

[0051] The ground irregularity 22, preferably defined as a vibration threshold, has, for example, a maximum length of 30 to 40 cm and a maximum height of 5 to 8 cm. These sizes / dimensions allow for a clear categorization, which can be determined by the sensor device 24 and optical detection devices, in particular cameras. In addition, GPS data or navigation systems can be used to identify known ground irregularities 22 and / or their position in advance.

[0052] The chassis 14 can, for example, also be equipped with a two-valve system that controls the rebound and compression damping independently of each other. The rebound damping regulates the extension movement, while the compression damping regulates the compression movement. This allows adjustments of the damping parameters to dynamic requirements while driving over the rumble strip, i.e., the unevenness of the road surface 22.

[0053] In summary, Fig. 1 shows the implementation of the damping system 10, which adapts the damping characteristics (damping parameters) of the chassis 14 depending on the detection and dimensions / sizes of preferably rumble strips (categorization). This can be achieved by controlling the damping stiffness, whereby the special soft setting remains activated only during the crossing interval and is reset immediately afterwards. In summary, the invention proposes a method for optimizing comfort when driving over so-called "sleeping policemen" using a predictive chassis control system.

Claims

Mercedes-Benz Group AG Patent claims 1. Procedure for operating a motor vehicle (16), - in which a data module is used to determine the current position of the motor vehicle (16) and / or an unevenness of the ground (22) on a road (20), and - in which at least one damping parameter for at least one wheel of the motor vehicle (16) is adjusted by means of a damping device (12) for a crossing of the determined unevenness of the ground (22), characterized in that - a category is determined for the unevenness of the ground (22), and - depending on the category determined for the ground unevenness (22), at least one damping parameter is adjusted during a crossing interval.

2. Method according to claim 1, characterized in that the at least one damping parameter is adjusted by reducing the damping stiffness during the crossing interval.

3. Method according to claim 2, characterized in that the damping hardness is reduced beyond a damping hardness range used for the normal operation of the motor vehicle (16).

4. Method according to one of the preceding claims, characterized in that a ground irregularity (22) categorized as a vibrating threshold has a length of less than or equal to 40 cm, in particular less than or equal to 35 cm, preferably less than or equal to 30 cm has a height of less than or equal to 8 cm, in particular less than or equal to 6 cm, preferably less than or equal to 5 cm.

5. Method according to one of the preceding claims, characterized in that the current position of the motor vehicle (16) and / or the unevenness of the ground (22) is determined by means of the data module designed as a navigation device with a database, and / or as a backend and / or as a database with historical measured values ​​and / or as an optical detection device, and / or as a sensor device.

6. Method according to one of the preceding claims, characterized in that a speed permitted at the position of the unevenness in the road is determined on the basis of traffic sign recognition.

7. Method according to claim 6, characterized in that the at least one damping parameter is adjusted depending on the deviation of the actual speed from the permitted speed and / or the speed of the motor vehicle (16) is adjusted before the crossing.

8. Method according to one of the preceding claims, characterized in that the crossing interval is started at a predetermined start time before reaching the unevenness of the ground (22) and / or upon reaching the position.

9. Method according to claim 8, characterized in that the predetermined start time is determined as a function of an execution time for carrying out the adjustment of the at least one damping parameter and / or as a function of a speed of the motor vehicle (16).

10. Method according to one of the preceding claims, characterized in that the crossing interval is terminated at a predetermined end time during or after the crossing.

11. Method according to claim 10, characterized in that the predetermined end time - at a point in time of a parameterizable spring travel limit, and / or - at a crest of the ground irregularity (22), and / or - is determined within a medium time range of the crossing interval.

12. Damping system (1) for a motor vehicle (16) which is designed to operate a method according to one of the preceding claims.

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