The method involves measuring a degree of an interference effect on a steering system (11). An electrical signal is generated based on the measured degree of the interference effect, where an electrical booster (15) assists steering of a motor vehicle (1) by the produced electrical signal. An electronic damping function is switched-on or activated for balancing or rejecting an interference effect within the electrical booster. A frequency analysis of a parameter is executed to determine first-order of frequency portions of the parameter for measuring the interference effect. An independent claim is also included for a steering system for steering a motor vehicle.

Steering system operating method for steering of motor vehicle, involves generating electrical signal based on measured degree of interference effect, where electrical booster assists steering of motor vehicle by produced electrical signal

The method involves estimating a toothed rack force and an artificial target-toothed rack force by an observer model of an auxiliary force supported steering of a vehicle. The estimated toothed rack force is subtracted from the estimated target-toothed rack force such that a common steering force error is generated. A fractional factor is determined based on signals of a steering angle speed and a steering angle. The factor is swapped to the common steering force error such that toothed rack compensation force is generated, where the compensation force is swapped to auxiliary force.

Method for compensating disturbance variable acting on automobile with auxiliary force supported steering, involves swapping fractional factor to common steering force error such that toothed rack compensation force is generated

An operation device for a friction clutch arranged in the drive train of a motor vehicle. The operation device includes a positioning servo arrangement with a pneumatic power cylinder arrangement. The pneumatic power cylinder arrangement acts on a clutch release sleeve arrangement. The positioning servo arrangement can be operated with a control valve that is connected to a pneumatic source depending on a command variable representing a desired position and an actual variable representing the axial position of the clutch release sleeve arrangement. The pneumatic power cylinder arrangement is arranged inside of the bell-shaped housing and the control valve is arranged outside of the bell-shaped housing or the bell-shaped housing is arranged at least partially inside of the bell-shaped housing, but is accessible from the outside and/or can be removed when the bell-shaped housing is attached to the combustion engine.

Friction clutch for a motor vehicle and an operation device for the operation, especially pneumatic operation, of a friction clutch

The method involves integrating a permanently active simulation model of a drive train in a motor vehicle, in which disturbances are predicted from a drive behavior, so that a balancing moment, which works against the disturbances, is produced for a servo steering. Input data produced in an electronic controller of the motor vehicle are received in the simulation model. The balancing moment is regulated depending on vehicle transverse acceleration and/or vehicle greed rate and/or axle drive moment and/or a measured steering moment and/or steering angle changes.

Drive influences balancing method for drive train of motor vehicle, involves integrating permanently active simulation model of drive train in motor vehicle, in which disturbances are predicted from drive behavior

The return system (1) has a housing (3), which is concentric with a shaft (10) linking the engine to a gearbox. A ring piston (11) moves axially in the housing on a guide sleeve (8) which is spaced from the inner wall (6) of the housing. The ring piston bridges the space between the guide sleeve and the housing inner wall and borders an annular pressure chamber (12). The return system also has a sensor system (17a), which registers the position of the ring piston. The sensor system incorporates an annular reverberation sensor (18), which is directly or indirectly arranged at the end face of the housing. The reverberation sensor operates with an pulser (19a), which surrounds the rotary piston (11).

Return system for automotive friction hydraulic clutch

In Einrichtung zum Kompensieren von Schiefzieheffekten an einem Kraftfahrzeug uber die Fahrzeuglenkung wird aus mindestens einer Grose (K¶M¶), die das Antriebsmoment des Fahrzeugs reprasentiert, ein Korrektursignal (S¶K¶) errechnet, das ein asymmetrisches Beugungsverhalten von zu den Fahrzeugradern fuhrenden Antriebswellen (12, 13) kompensiert, und dem Stellsignal (S¶L¶) der Lenkung uberlagert. Die ermoglicht auf einfache Art und Weise, Lenkmomente auszugleichen, die aus einem asymmetrischen Antriebsstrang resultieren.

Einrichtung zum kompensieren von schiefzieheffekten an einem kraftfahrzeug

In a device for detecting the position of a control element (2, Fig 1) which can be influenced hydraulically or pneumatically by means of a control line having a measuring piston 3 sliding in a housing 4, in the control line of the control element (2), a sensor is provided for monitoring the position of the measuring piston to monitor the position of the control element (2). The sensor may be a rotary potentiometer actuated by a toothed wheel 13 engaging teeth on a measuring rod 12 or a measuring coil (35, Fig 3) surrounding the housing 4. The device may be used with a control element in an actuating device for a friction coupling (Fig 1) of a motor vehicle having a slave cylinder (2), a directional control valve (20), a pressure medium pump (23) driven by a motor (22), a non-return valve (25) and a pressure switch (26).

Vorrichtung zum Erfassen der Position eines Stellelementes

The pressure pump mechanism (1) and the steering mechanism (30) are connected via pressure conduits and a valve mechanism to a pressure accumulator (16). Fluid held under pressure in the accumulator is used to operate a clutch (46). The fluid pressurisation device includes a drive motor (2) a pump (3) and a container (4) for the storage of the fluid. There is a check valve (5), at least one pressure limiting valve (6) and pressure lines (7,8,19). The servomechanism includes a steering actuator cylinder (34) connected to the steering wheel (31). There is a steering angle sensor (32) and a steering valve (33) for feeding fluid to the steering actuator cylinder.

Fluid-driven control apparatus for a power steering and a clutch as well as method for its operation

Device for detecting the position of a control element

The method involves determining a first straight-line steering angle indicative of a steering angle at which a motor car is traveling (S12). Comparison of the first straight-line steering angle with a second straight-line steering angle is determined (S13) before entering to an operating condition. A loss signal is passed to a user of the car, and a defect entry is stored (S14) in a fault memory and/or parameter of a driving assist system when a deviation of the first straight-line steering angle from a second straight-line steering angle is greater than a predetermined threshold value. The driving assist system is designed as a transverse leading driving assist system. An independent claim is also included for a motor car.

Method for detecting damage to track rod of steering train of motor car, involves storing defect entry in fault memory when deviation of straight-line steering angle from another steering angle is greater than predetermined threshold value

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