Abstract: An actuator assembly of an electromechanical vehicle brake has a linearly displaceable brake piston, a brake calliper unit having a holder for the brake piston, and a rotation prevention arrangement. The rotation prevention arrangement comprises a ring pushed onto a contact surface on the brake piston and connected in a rotationally fixed manner to the brake piston at an inner circumferential surface. The ring has at least one radially outwardly protruding securing projection, and a groove associated with the securing projection, which runs in the axial direction in the inner circumferential surface of the holder. A method for mounting and dismounting the brake piston is also disclosed.

Abstract: A ball screw drive for an actuator assembly of a vehicle brake is disclosed. The ball screw drive has a rotatably mounted recirculating ball screw spindle, on which a spindle nut open on one side is mounted. At least one thread groove is formed on the circumferential surface of the recirculating ball screw spindle, and a corresponding thread groove is formed on the inner surface of the spindle nut. A multiplicity of balls is guided in the thread grooves in such a way that rotation of the recirculating ball screw spindle brings about axial movement of the spindle nut along a rotational axis of the recirculating ball screw spindle. The spindle nut is hardened by ferritic nitrocarburizing. Moreover, a method for producing a ball screw drive and a vehicle brake are disclosed.

Abstract: A ball screw drive for an actuator assembly of a vehicle brake is disclosed, having a rotatably mounted recirculating ball screw spindle, on which a spindle nut open on one side is mounted. At least one thread groove is formed on the circumferential surface of the recirculating ball screw spindle, and a corresponding thread groove is formed on the inner surface of the spindle nut. A multiplicity of balls is guided in the thread grooves in such a way that rotation of the recirculating ball screw spindle brings about axial movement of the spindle nut along a rotational axis of the recirculating ball screw spindle. The spindle nut is manufactured from rolling bearing steel or from C steel.

Abstract: A ball screw drive for an actuator assembly of a vehicle brake is disclosed, comprising a rotatably mounted ball screw shaft on which a ball nut, which is open axially on one side, is mounted, wherein at least one thread is formed on a circumferential face of the ball screw shaft and a corresponding thread is formed on an inner face of the ball nut, wherein a large number of balls is guided in the threads in such a way that rotation of the ball screw shaft causes axial displacement of the ball nut along an axis of rotation of the ball screw shaft. The ball nut has a corrosion protection coating on an exterior thereof, at least on an end face thereof and in a region of a circumferential wall adjacent to the end face. A method for producing a ball screw drive is disclosed.

Abstract: A ball-screw drive for an actuator assembly of a vehicle brake is disclosed, comprising a rotatably mounted recirculating ball screw on which a cup-shaped screw nut is mounted. On a circumferential surface of the recirculating ball screw, at least one thread is formed. On the inner surface of the screw nut, a corresponding thread is formed, wherein, in the threads, a plurality of balls are guided in such a way that a rotation of the recirculating ball screw brings about an axial displacement of the screw nut along an axis of rotation of the recirculating ball screw. The screw nut is formed in two parts and has an inner part, in which the thread is formed, and an outer part, on which the circumferential surface of the screw nut is formed. The outer part has protection against corrosion. Furthermore, an actuator assembly and a method for producing a ball-screw drive are indicated.

Abstract: There is set out an actuator subassembly (10) for a vehicle brake, having a linearly displaceable, unilaterally open brake piston (20) which is used to apply a brake liner to a brake rotor, having a brake calliper unit (12), in which a receptacle (22) having a running face (24) for the brake piston (20) is provided, and having a rotation prevention member which has at least one axially extending groove (38) in the running face (24) and at least one rotation prevention element (32) and by means of which the brake piston (20) is guided in the brake calliper unit (12) in a rotationally secure manner when the rotation prevention element (32) is received in the groove (38).

Abstract: A ball-screw drive (16) for an actuator assembly (10) of a vehicle brake is indicated, comprising a rotatably mounted recirculating ball screw (18) on which a cup-shaped screw nut (20) is mounted. On the circumferential surface of the recirculating ball screw (18), at least one thread (26) is formed, and on the inner surface of the screw nut (20), a corresponding thread (28) is formed, wherein, in the threads (26, 28), a plurality of balls (30) are guided in such a way that a rotation of the recirculating ball screw (18) brings about an axial displacement of the screw nut (20) along an axis of rotation of the recirculating ball screw (18), The screw nut (20) is formed in two parts and has an inner part (36), in which the thread (28) is formed, and an outer part (38), on which the circumferential surface (34) of the screw nut (20) is formed, wherein the outer part (38) has protection against corrosion. Furthermore, an actuator assembly (10) and a method for producing a ball-screw drive (16) are indicated.

Abstract: An electric parking brake (100) has a spindle drive (28) which is electrically actuable and self-locking. The spindle drive (28) comprise a spindle (34) with an external thread and a spindle nut (30) with an internal thread which is in engagement with the external thread. Here, the external thread and the internal thread have a symmetrical thread profile. Furthermore, the profile edges of adjacent profile crests of the external thread merge directly into one another via a rounded portion in the profile trough which lies in between. Furthermore, a method for producing a parking brake (100) of this type is provided.

Abstract: Embodiments of the invention relate to a method for driving an ego vehicle in a defined speed range, wherein the ego vehicle has at least one drive unit, and for the at least one drive unit there is provided a characteristic curve specific to the drive unit for a speed-dependent maximum torque, wherein for the at least one drive unit of the ego vehicle a performance-specific characteristic curve depending on the characteristic performance class of the ego vehicle is established for a speed-dependent performance-specific characteristic torque which is less than the maximum torque, and a supplemental torque is established for the ego vehicle when driving in the defined speed range of the ego vehicle in addition to the performance-specific characteristic torque.

Abstract: An all-wheel system for a motor vehicle, with a first electric machine for driving a first drive axle of the motor vehicle; a first electronic power unit for controlling a rotational speed of the first electric machine; a second electric machine for driving a second drive axle of the motor vehicle; a second electronic power unit for controlling the rotational speed of the second electric machine on the basis of the rotational speed of the first electric machine and a specified differential rotational speed between the first electric machine and the second electric machine.

Abstract: A system and a method for estimating the coefficient of friction of a hydraulic brake system in a motor vehicle. A system and a method for adjusting the braking torque of a hydraulic brake system in a motor vehicle in order to obtain a desired actual braking torque.

Abstract: A brake system for an at least partly electrically powered vehicle having an electric motor operable as a generator; a friction brake device; a brake control device, which is designed to regulate a generator torque (MGE) of the generator and a friction braking torque (MRB) of the friction brake device; an operating element, especially a brake pedal or brake lever or accelerator pedal, which is designed to provide a desired deceleration.

Abstract: A method for operating a clutch of a drive train of a vehicle wherein the clutch, a drive motor primary axis having first wheels that can be driven by the drive motor as first axis and a second axis having second wheels are driven by the drive motor via the clutch as second axis, with the clutch being adjusted between a closed position, wherein a first coupling torque of the clutch is set, and at least one second position differing from the closed position, wherein a second coupling torque of the clutch that is lower than the first coupling torque is set: determining at least one coefficient of friction of a roadway the vehicle is located on; and as a factor of the determined coefficient of friction: adjusting a basic torque of the clutch, with the clutch being prestressed in the second position by the basic torque.

Abstract: A multi-functional stroller comprising an incline detection system, and a braking system. The multi-functional stroller can detect when rolling uncontrolled, or when a user is not grasping the multi-functional stroller and engage the braking system to keep stroller occupant in safety. In embodiments, the multi-functional stroller can have motorized wheel hubs to aid in navigating stairs or uneven terrain.

Abstract: A method for operating a clutch of a drive train of a vehicle wherein the clutch, a drive motor primary axis having first wheels that can be driven by the drive motor as first axis and a second axis having second wheels are driven by the drive motor via the clutch as second axis, with the clutch being adjusted between a closed position, wherein a first coupling torque of the clutch is set, and at least one second position differing from the closed position, wherein a second coupling torque of the clutch that is lower than the first coupling torque is set: determining at least one coefficient of friction of a roadway the vehicle is located on; and as a factor of the determined coefficient of friction: adjusting a basic torque of the clutch, with the clutch being prestressed in the second position by the basic torque.

Abstract: The invention relates to a method for controlling a braking system for setting a total braking torque distribution between a first and a second axle of a motor vehicle. The braking system includes a friction braking device and a recuperative braking device. The braking system has a total braking torque composed of a friction braking torque portion and a recuperative braking torque portion. The method include determining, for one axle, a minimal recuperation torque, which is set on that axle, and remains set on that axle for all driving situations as a recuperative braking torque portion.

Abstract: A method for operating an energy storage device with at least one first and at least one second energy storage element in a motor vehicle, wherein the first and the second energy storage elements are connected in series to provide a nominal voltage of the energy storage device, wherein when a charging condition indicated for charging an energy storage device by a motor vehicle-independent energy source as fulfilled, the first and the second energy storage elements are connected in parallel to the motor vehicle-independent energy source, wherein a charging voltage is provided by the motor vehicle-independent energy source for charging the energy storage device, which is lower than the nominal voltage of the energy storage device with a connection in series of the first and of the second energy storage element.

Abstract: A method for operating a drivetrain of a motor vehicle comprising an engageable and disengageable four-wheel drive and at least two intermeshing gears, in which the four-wheel drive is switched off by the opening of at least one clutch of the drivetrain, wherein a change of engagement of the gears resulting from the switching off is actively braked by an electric machine of the drivetrain.

Abstract: A brake system is described for an at least partly electrically powered vehicle having an electric motor operable as a generator; a friction brake device; a brake control device, which is designed to regulate a generator torque (M_GE) of the generator and a friction braking torque (M_RB) of the friction brake device; an operating element, especially a brake pedal or brake lever or accelerator pedal, which is designed to provide a desired deceleration.

Abstract: An all-wheel system for a motor vehicle, with a first electric machine for driving a first drive axle of the motor vehicle; a first electronic power unit for controlling a rotational speed of the first electric machine; a second electric machine for driving a second drive axle of the motor vehicle; a second electronic power unit for controlling the rotational speed of the second electric machine on the basis of the rotational speed of the first electric machine and a specified differential rotational speed between the first electric machine and the second electric machine.