Abstract: Disclosed is a bearing system for a worm engaging with a worm wheel as part of a steering gear, wherein the bearing system comprises at least one bearing with an outer ring, an inner ring, and rolling bodies that are movably accommodated between the outer an inner rings, the bearing being pivotally arranged in a bearing seat for accommodating the outer ring of the bearing, and wherein the inner ring accommodates one of the two shaft ends of the worm in order to seat said shaft end of the worm radially in the housing of the steering gear. For an improved dampening of the worm at least one spring element, which exerts a spring force on a region of the outer ring of the bearing, is provided at the bearing, said spring force supporting a pivotal motion of the worm toward the worm wheel.

Abstract: In order to achieve a steering feel for SbW systems and EPS systems having a control design for controlling the steering torque by generating a target steering torque (torTB) that can be adapted to various steering systems, vehicle types, or requirements, in which the resulting steering feel is a steering feel, in all driving conditions and driving situations, which is equivalent to, or better than, hydraulic and electromechanical steering systems available on the market today, according to the invention: a base steering torque (torB) is determined as a function of an externally acting force (torR) and a vehicle speed (velV); a damping torque (torD) is determined as a function of a steering speed (anvSW) and the vehicle speed (velV); a hysteresis torque (torF) is determined as a function of the steering speed (anvSW) and the vehicle speed (velV); a centering torque (torCF; torC) in the direction of the straight-ahead position is determined as a function of a steering wheel angle (angSW) and the vehicle speed

Abstract: Disclosed is a power steering system for a motor vehicle, comprising a housing in which a steering rod is held in an axially movable manner. The steering rod comprises a spindle section which, together with a rotatably mounted recirculating ball nut forms a recirculating ball screw and nut gear. A support bushing is provided between an axial end of the steering rod and the recirculating ball nut, the bushing providing a through-hole for guiding the steering rod through. The inner face of the support bushing which faces the steering rod has a curved contour so that the opening cross-section of the through-hole increases toward the end of the steering rod. The curved contour is adapted to a bending line of the steering rod so that the steering rod, when it comes in contact with the support bushing as a result of a bending load, abuts the curved contour thereof in a planar manner.

Abstract: So as to provide, with high accuracy, an actuating variable for actuating a torque control element in an electric vehicle steering system and achieve this with reduced complexity as compared to the known methods and devices, an actual torsion-bar torque (MD) is detected, a differential torque is found from a predefined target torsion-bar torque (MD,ref) and the actual torsion-bar torque (MD), and the actuating variable is determined by means of an output feedback controller, as a function of the differential torque.

Abstract: Disclosed is a radially movable floating bearing for a shaft of a gear of a steering system, comprising a bushing or an inner ring or a rolling bearing, which is supported in a seat of a frame or housing of the gear. The inner ring or the bushing or the rolling bearing is held by at least one support element made of material having elastomeric properties which is inserted into a gap between the seat and the inner ring, the support element being designed as a pivot bearing. In order to provide a radially movable floating bearing for a steering system gear shaft, which is low-noise, easy to pivot and highly resilient, the pivot bearing cooperates with a damping stop disposed tangentially at a distance thereto, the stop being disposed at a radial distance from the inner ring or the seat.

Abstract: Method for operating a steering system for a motor vehicle with at least one steerable wheel, a servo drive and a superimposed gear mechanism, the steering movement, initiated by the driver of the vehicle, and the movement for producing the steering movement of the steerable wheel, initiated by the servo drive for realizing useful functions (VSR, LAFN) being superimposed by the superimposed gear mechanism into a pinion angle, the servo drive for initiating the movement being triggered by a control signal (?Md) of a control device. The servo drive is turned back in a controlled manner when a substitute mode of at least one useful function (VSR, LAFN) of the steering system is switched off or on.

Abstract: A method of stabilizing a vehicle combination including a towing vehicle and a trailer, includes determining at least one vehicle state variable describing the state of the vehicle from a comparison with an assigned nominal value. A correcting variable is produced, which is supplied to an actuator in the vehicle. The correcting variable acts upon a steering actuator in order to adjust the wheel steering angle.

Abstract: A power steering device for a vehicle which is disposed in the transmission path between a steering handle and a steerable vehicle wheel, comprises a servo cylinder having two pressure chambers, which are separated by a working piston and are each connected to a pressure supply unit. A valve plunger, which seals a bypass channel between the pressure chambers, is movably disposed on the working piston. Furthermore, an adjustment bushing comprising an adjustment section is disposed in the servo cylinder, the valve plunger being moved against this section upon approaching an axial limit position, thereby opening the bypass channel. The adjustment bushing is clamped into the servo cylinder, yet held displaceably, wherein, on the adjustment bushing, a sealing section is provided, which is to be moved into a sealing position with the working piston so as to interrupt the flow connection between the pressure chambers.

Abstract: A hydraulic power steering system for a vehicle, e.g., an electrohydraulic power steering system for a motor vehicle, includes a servo valve, the relative movement of whose control parts actuates a piston rod of a servo cylinder and changes at least one steering angle of a wheel which is operatively connected to the piston rod, and additionally has an electric servo motor which drives a rack with the servo cylinder for adjusting the steering angle of the wheel in the same direction. In order to provide an electrohydraulic power steering system which is as compactly arranged as possible in the region of its actuator and may be used flexibly for different classes of vehicle, the action of the rack and the piston rod of the servo cylinder is combined, in a parallel arrangement with one another, on an addition member for jointly adjusting the steering angle of the wheel.

Abstract: A superimposed steering system for a vehicle, e.g., a servo-assisted or power steering system for a motor vehicle, includes a differential drive, which is configured as a shaft drive and has a first input shaft and a second input shaft, for superimposing the rotational angles that occur in the first and second input shafts on an output shaft of the differential drive. The output shaft acts on an input shaft of a steering gear. The first input shaft interacts with a steering handle by a steering shaft and the second input shaft interacts with a servo motor. A superimposed steering system may apply an additional steering angle, without play, to the output shaft and may have a simple, cost-effective, space-saving construction, while being easy to install. The first input shaft is directly connected in a detachable manner to a radially flexible flex-spline of the shaft drive, the first input shaft passing through an eccentric drive core of the shaft drive, which extends into the radially flexible flex spline.

Abstract: Disclosed is a method for actuating a superimposed steering system, a superimposed steering system, a controller, a computer program, and a computer program product. In the method, a steering ratio is produced as a function of the driving speed, with the magnitude of a time delay being adjusted as a function of the driving speed.

Abstract: A control method is for controlling a control angle and an output torque of a superposition angle actuator of a superimposed steering system of a motor vehicle. At least the control of the control angle occurs with the aid of a nonlinear compensation controller.

Abstract: A rotary pump for producing a pressure medium flow for a consumer, includes a pump housing in which a curved ring is inserted. A rotor is rotatably borne on a drive shaft in the curved ring. The rotor carries displacement elements at a tangential distance to one another which form a pump chamber between the rotor and the curved ring with a suction opening. A pressure medium-activated adjusting device is operable for changing the eccentricity of the curved ring relative to the rotor, and includes a first pressure chamber and a second pressure chamber fluidically and tangentially distanced from the first pressure chamber The pressure in the first and second pressure chambers is controlled by a flow control valve, the low pressure chamber of which communicates with a first control line on a downstream side of a metering orifice.

Abstract: Disclosed is a radially movable floating bearing for a shaft of a gear of a steering system, comprising a bushing or an inner ring or a rolling bearing, which is supported in a seat of a frame or housing of the gear. The inner ring or the bushing or the rolling bearing is held by at least one support element made of material having elastomeric properties which is inserted into a gap between the seat and the inner ring, the support element being designed as a pivot bearing. In order to provide a radially movable floating bearing for a steering system gear shaft, which is low-noise, easy to pivot and highly resilient, the pivot bearing cooperates with a damping stop disposed tangentially at a distance thereto, the stop being disposed at a radial distance from the inner ring or the seat.

Abstract: An electric power steering system, and in particular a power-assisted steering system for a vehicle, comprises a steering transmission housing and a housing cover which forms an axial closure of the steering transmission housing and which is penetrated by an axially displaceable component of the steering transmission. In order to provide an electric power steering system which is easy to assemble and is not susceptible to wear, in an axially outer region of the housing cover, a first guide bushing for the axially displaceable component is integrated in the housing cover.

Abstract: In a power-assisted steering system or power steering system having an electric motor, which drives a worm gear mechanism that has a composite gear wheel in the form of a worm wheel, the worm wheel includes a ring gear connectible to a hub via a first disk, and an annular projection of the first disk axially engages with the ring gear. In order to improve the centering of the component parts of the composite gear wheel in the tangential direction, and in order to render the power transmission in the gear wheel uniform, the annular projection on the first disk is provided with one or more depressions in the axial direction to form tooth-like projections, which form a drive-type toothed section and engage with depressions on an axial side face of the ring gear.

Abstract: A device for exposing an opening in a housing part of a steering gear in a vehicle steering system has a closure element that closes the opening and a component that, when it comes into contact with a liquid, changes at least one of its properties such that, after the component cooperates with the closure element, the closure element exposes the opening.

Abstract: A hydraulic power steering system for a vehicle includes a first, hydraulic actuator for making available steering power or auxiliary steering power for adjusting the steering angle of one or more steered wheels of the vehicle, and with a second electric actuator for making available a steering power or auxiliary steering power for adjusting the steering angle of the steered wheel. For a power steering system, for which the power dissipated is reduced and the operating temperature lowered, the first hydraulic actuator can be taken out of operation while the vehicle is being driven as a function of the trip and/or vehicle parameters.

Abstract: A rotary slide valve, in particular for speed-dependent power steering systems in motor vehicles, has a torsion bar, a rotary slide, and a control bushing. The control bushing is pressed onto a pinion and the torsion bar is inserted into a torsion bar bore of the pinion. The control bushing is connected rotation-fast to the pinion by shaping. The torsion bar has teeth that are pressed into the torsion bar bore of the pinion and that connect the torsion bar to the pinion rotation-fast.

Abstract: A power steering device for a vehicle which is disposed in the transmission path between a steering handle and a steerable vehicle wheel, comprises a servo cylinder having two pressure chambers, which are separated by a working piston and are each connected to a pressure supply unit. A valve plunger, which seals a bypass channel between the pressure chambers, is movably disposed on the working piston. Furthermore, an adjustment bushing comprising an adjustment section is disposed in the servo cylinder, the valve plunger being moved against this section upon approaching an axial limit position, thereby opening the bypass channel. The adjustment bushing is clamped into the servo cylinder, yet held displaceably, wherein, on the adjustment bushing, a sealing section is provided, which is to be moved into a sealing position with the working piston so as to interrupt the flow connection between the pressure chambers.