Abstract: A method is provided for determining correction values for the wheel speeds of a vehicle, comprising the step of determining the speeds of the vehicle wheels during travel, with the speeds of the vehicle wheels being evaluated, in groups, for at least one vehicle axle and at least one vehicle side values of correction for the individual vehicle wheels being determined in accordance with the evaluation results. Moreover, a device is provided for determining corection values, comprising wheel sensors for determining the speeds of wheels of the vehicle during travel, and a determining means evaluating the speeds of the vehicle wheels, in groups, for at least one vehicle axle and at least one vehicle side, and determining correction values for the individual vehicle wheels in accordance with the results of evaluation.

Abstract: An air spring arrangement of the motor vehicle is equipped with a tire-fill device which includes the fill unit (20) and a tire-fill connection unit (4). A filling of a reserve tire is ensured even when there is an electric fault in the level control system. The tire-fill connection unit (4) includes an air supply connection (6), a proximity switch (8), an electric sensor connection (10) and a pneumatic connection (12) for rapid coupling and valve connection. The proximity switch (8) includes a reed contact (28) which includes three terminals (32a, 32b, 32c) which are connected to a control apparatus (34). A component (14) has a pneumatic valve connection (16) and a permanent magnet (18) and is connected to the pneumatic connection (12). The permanent magnet (18) excites the reed contact (28) to switch when the component (14) is connected to the tire-fill connection unit (4).

Abstract: A method controls a level control system in a motor vehicle and the system includes elevation sensors for measuring the distance between the body of the motor vehicle and corresponding axles of the motor vehicle. The level control system controls this distance to a desired level. The method provides for determining the direction of travel of the motor vehicle and correcting the measurement signal of the elevation sensors in a direction toward the desired level when there is a rearward travel of the motor vehicle.

Abstract: A method detects leakages in a motor vehicle air spring system which includes a plurality of air springs and has a level control arrangement. The level control arrangement includes: an electronic control apparatus; a plurality of elevation determination sensors associated with corresponding ones of the air springs; a pressure sensor; a plurality of air spring valves corresponding to respective ones of the air springs and a compressor. The elevation determination sensors and the pressure sensor are connected to the control apparatus for supplying signals thereto. The control apparatus functions to process the signals for controlling the air spring valves and the compressor for controlling the motor vehicle upwardly or downwardly in elevation. In the method, at a first time point (t1), the elevation-distance values (h1) and the corresponding air pressure (p1) are measured for each air spring and the elevation-distance values are stored with the time of measurement with the first time point (t1).

Abstract: In a motor vehicle equipped with air springs, the compressor of the level control system is used to inflate a spare wheel. For this purpose, the air spring arrangement of the motor vehicle is equipped with a tire-fill device which includes the fill unit (20) and a tire-fill connection unit (4). A filling of a reserve tire is ensured even when there is an electric fault in the level control system. The tire-fill connection unit (4) includes an air supply connection (6), a proximity switch (8), an electric sensor connection (10) and a pneumatic connection (12) for rapid coupling and valve connection. The proximity switch (8) includes a reed contact (28) which includes three terminals (32a, 32b, 32c) which are connected to a control apparatus (34). An operator-manipulated component (14) has a pneumatic valve connection (16) and a permanent magnet (18) and is connected to the pneumatic connection (12) for a rapid coupling and valve connection.

Abstract: An adjustable shock absorber (8) includes a damping force changing device (16) which continuously adjusts the damping force characteristic of the shock absorber in response to input control signals. A first signal is generated by a first sensor which represents the damping force movement. At least a second signal is generated by at least a second device (10a . . . ) which represents the vertical bodywork speed (VA, 12) and/or the vehicle longitudinal speed (20). Based on this, a control signal (18) for adjusting the damping force characteristic is computed in accordance with a control law in the manner that the change of the desired current can be limited over time.

Abstract: The invention relates to a method for determining the wheel loading of a motor vehicle wheel, with an attached air spring, with the aid of which the vehicle chassis is suspended relative to the motor vehicle wheel, including the following steps: a stationary wheel loading is calculated from the product of the effective cross-sectional area of the air spring and the pressure therein; a dynamic wheel loading is calculated from the product of the spring stiffness of the air spring and the deflection from the rest position thereof; the wheel loading is determined by adding the stationary and dynamic wheel loadings.

Abstract: The invention is directed to a method of filling a pressurized medium chamber of a level control system which includes a pressurized medium store and a compressor. The pressurized medium chamber is filled from the pressurized medium store over a time span during which the pressurized medium difference between the pressurized medium store and the pressurized medium chamber exceeds a threshold value. When the pressurized medium difference between the pressurized medium store and the pressurized medium chamber reaches the threshold value, a further filling of the pressurized medium chamber is necessary and takes place by means of the compressor of the level control system.

Abstract: A method controls (open loop and/or closed loop) the damping force of adjustable dampers in vehicles, especially in motor vehicles, with active or semi-active damping systems. The method effects economically and rapidly a reliable control (open loop or closed loop). The control (open loop and closed loop) takes place in dependence upon the damper velocity (VDK) and the damper velocity signals are determined with the aid of distance sensors and difference formation of the distance sensor signals over a predetermined time difference.

Abstract: A method controls the damper current of a damper of a motor vehicle. The damper is adjustable by an electrical current and the permissible change of the current per time interval is delimited by a limit.

Abstract: One or several vibration dampers of a vehicle suspension have a damping force arrangement wherein a control signal is computed within the actuating range in accordance with a standard control method for adjusting the damper characteristic. The drive of a damper adjustable in accordance with this invention is so improved that body movements (notwithstanding a harder adjusted damping for critical driving situations) are substantially suppressed as early as possible. In specific driving situations, the adjusting range of the damper force is changed in that the upper limit of the adjusting range is raised or lowered and/or the lower limit of the adjusting range is raised or lowered. A soft damper setting takes place preferably in dependence upon signals which announce or display a change of the vehicle longitudinal deceleration or vehicle transverse acceleration.

Abstract: The invention is directed to a method for controlling the level of a vehicle body of a motor vehicle with a level control system having a plurality of actuator elements with which the level of the vehicle body can be lowered by discharging an actuating fluid from the actuator elements. The level control system includes a control unit. A first level of the vehicle body is determined relative to a reference point directly before a discharge operation. A discharge operation of the vehicle body is initiated when the first level lies above a pregiven level. After initiating a discharge operation, a check is made in the control unit as to whether the vehicle body has lowered from the first level in accordance with an input. The discharge operation is interrupted when the vehicle body has not lowered from the first level in accordance with the input.

Abstract: The invention relates to a method for determining the spacing or distance of two reference points which are movable between a lower spacing limit and an upper spacing limit. The method is especially for determining the spacing of a vehicle body of a motor vehicle relative to a fixed reference point. The spacings are determined with the aid of a sensor and this sensor is attached as close as possible to a defined position. Thereafter, an offset is determined from the signal, which is indicated by the sensor, and from the signal, which a sensor would indicate if located in the defined position. For the spacing measurement, this offset is added to the signal, which is indicated by the sensor, and the spacing of the two reference points is determined from the summation signal which results in this way. With the method, it is achieved that an imprecisely installed sensor can be calibrated to a precisely installed sensor.

Abstract: The invention is directed to a method of filling a pressurized medium chamber of a level control system which includes a pressurized medium store and a compressor. The pressurized medium chamber is filled from the pressurized medium store over a time span during which the pressurized medium difference between the pressurized medium store and the pressurized medium chamber exceeds a threshold value. When the pressurized medium difference between the pressurized medium store and the pressurized medium chamber reaches the threshold value, a further filling of the pressurized medium chamber is necessary and takes place by means of the compressor of the level control system.

Abstract: The invention is directed to a method for controlling the level of a vehicle body of a motor vehicle with a level control system having a plurality of actuator elements with which the level of the vehicle body can be lowered by discharging an actuating means from the actuator elements. The level control system includes a control unit. A first level of the vehicle body is determined relative to a reference point directly before a discharge operation. A discharge operation of the vehicle body is initiated when the first level lies above a pregiven level. After initiating a discharge operation, a check is made in the control unit as to whether the vehicle body has lowered from the first level in accordance with an input. The discharge operation is interrupted when the vehicle body has not lowered from the first level in accordance with the input.