Abstract: A wheel brake for a motor vehicle which can be operated electromechanically and/or hydraulically. The wheel brake includes a brake caliper module having at least one electromechanically operable braking device and having at least one hydraulically operable braking device.

Abstract: A method for controlling the force of an electromechanical motor vehicle brake and a motor vehicle brake having an electromechanical motor vehicle brake for carrying out the method are disclosed. The method comprises checking whether a braking power does not exceed a specified limit value for the maximum power of an actuator and reducing or modifying a target actuator speed to a modified target actuator speed if the specified limit value is exceeded.

Abstract: A method for monitoring an electrically actuated brake comprises ascertaining a base friction and a mechanical efficiency of the brake. An expected residual application force is determined based on the base friction and the mechanical efficiency of the brake. If the residual application force is at least as high as a threshold value, an error message is issued. An associated brake arrangement for executing the method is also disclosed.

Abstract: A brake system for a motor vehicle has electromechanical wheel brakes, a brake operating unit and a central brake control unit. The wheel brakes each have a local brake control unit. The central brake control unit is connected to the brake operating unit and the local brake control units via a first data connection. The brake operating unit is connected to the local brake control unit of at least one wheel brake via a second data connection. In a normal operating mode the central brake control unit determines at least one brake demand from first operating information, received via the first data connection and transmits control signals corresponding to the brake demand to the local brake control units. In a fallback operating mode the local brake control units actuate the respective wheel brakes basis on second operating information, received via the second data connection.

Abstract: A method for determining an operating variable of a drum brake comprises actuating the brake in at least one of: a first wheel speed range and a second wheel speed range. The operating variable is calculated based on bearing force of a leading brake shoe and the further bearing force of a trailing brake shoe when in the first wheel speed range. The operating variable is calculated when in the second wheel speed range based on a current actuator position and an actuator contact position, in which brake shoes of the drum brake come into engagement with a drum of the drum brake.

Abstract: A transmission assembly has a plurality of reduction ratios. For this purpose, the transmission assembly can comprise a planetary transmission in which the annulus can rotate freely in a first direction of rotation and in which the annulus is held fixed against rotation in a second direction of rotation. A method of operating a transmission assembly is also disclosed.

Abstract: A method for operating a motor vehicle brake system having hydraulic wheel brakes; an atmospheric pressure pressure medium reservoir; a pressure modulation unit setting wheel-specific brake pressures, an electrohydraulic pressure provision device connected to the pressure modulation unit and the pressure medium reservoir which outputs brake system pressure to the pressure modulation unit and draws in pressure medium from the reservoir; a first and second pressure activation valve connecting the pressure provision device to the pressure modulation device. A piston of the piston-cylinder arrangement separates two pressure spaces from one another. A pressure build-up occurs in the first pressure space during a backward movement of the piston and in the second pressure space during a forward movement of the piston. During a brake pressure build-up by a forward stroke of the piston, the activation valve is opened and the first pressure space is hydraulically separated from the pressure medium reservoir.

Abstract: A method and apparatus for holding a motor vehicle by means of an electrically actuated brake comprises applying the brake until a target force is reached. For holding purposes, a motor torque is reduced by applying a negative preset value for a target angular velocity for a motor torque of an electric actuator of the brake.

Abstract: An electrically actuated motor vehicle brake and method are provided for determining a contact position of an electrically actuated motor vehicle brake along a displacement path of an actuator, with an initial contact position being verified using a reference contact position, and with the initial contact position being determined differently than the reference contact position.

Abstract: An electromechanical brake device has a brake caliper and a pressure piston mounted in the brake caliper such that it can move in a clamping direction, wherein the brake device has an electromechanical clamping device, wherein the clamping device is supported, on one side, on the pressure piston and is designed to apply to the pressure piston a force acting in the clamping direction. It is provided that the brake device has at least one hydraulically sealed, fluid-filled cavity, wherein the clamping device is supported, on the other side, indirectly on the brake caliper via the fluid-filled cavity, and wherein a pressure sensor is hydraulically connected to the fluid-filled cavity and is designed to calculate the fluid pressure inside the fluid-filled cavity.

Abstract: A method for ascertaining an operating variable of a drum brake, the method using forces acting on supporting bearings. The invention further relates to an associated drum brake assembly, an associated analysis unit and an associated storage medium.

Abstract: A brake system for a motor vehicle has electromechanical wheel brakes, a brake operating unit and a central brake control unit. The wheel brakes each have a local brake control unit. The central brake control unit is connected to the brake operating unit and the local brake control units via a first data connection. The brake operating unit is connected to the local brake control unit of at least one wheel brake via a second data connection. In a normal operating mode the central brake control unit determines at least one brake demand from first operating information, received via the first data connection and transmits control signals corresponding to the brake demand to the local brake control units. In a fallback operating mode the local brake control units actuate the respective wheel brakes basis on second operating information, received via the second data connection.

Abstract: A method for monitoring the release behavior of an electromechanical wheel brake of a vehicle, the wheel brake having at least one electrically controllable force actuator configured to apply a brake-application force to friction partners of the wheel brake. comprises activating the force actuator in accordance with a defined control pattern which is dependent on a present operating state of the wheel brake, a present operating state of further wheel brakes of the vehicle, and/or a present operating state of the vehicle. The activation of the force actuator is interrupted at a defined point in time. The operating parameters of the wheel brake are monitored for a defined period of time after the interruption of the activation. The release behavior of the wheel brake is determined by ascertaining a reaction of the force actuator to the interruption of the activation on the basis of the ascertained operating parameters.

Abstract: A method for determining an operating variable of a drum brake comprises actuating the brake in at least one of: a first wheel speed range and a second wheel speed range. The operating variable is calculated based on bearing force of a leading brake shoe and the further bearing force of a trailing brake shoe when in the first wheel speed range. The operating variable is calculated when in the second wheel speed range based on a current actuator position and an actuator contact position, in which brake shoes of the drum brake come into engagement with a drum of the drum brake.

Abstract: A brake installation for a motor vehicle. First and second pressure provision devices build up brake pressure in the wheel brakes. The first pressure device connected to a first wheel brake of a first brake circuit and to a second wheel brake of the first brake circuit. The second pressure device connected to a third wheel brake of a second brake circuit and to a fourth wheel brake of the second brake circuit. Each pressure device is respectively activated by an open-loop/closed-loop control unit. A first hydraulic line, with a normally open isolating valve, connects the first wheel brake line of the first brake circuit to the first wheel brake line of the second brake circuit. A second hydraulic line, with a normally open isolating valve, connects the second wheel brake line of the first brake circuit to the second wheel brake line of the second brake circuit.

Abstract: A planetary gear assembly, in particular for an electromechanical service or parking brake for a motor vehicle. The planetary gear assembly can include a central sun gear, a plurality of planetary gears rotatably mounted on a planetary carrier, and a ring gear enclosing the planetary gears. The planetary gears can be mounted by the planetary carrier, such that the planetary gears roll off both the sun gear and the ring gear, whereby the sun gear, the planetary carrier or the ring gear is non-rotatably held by a holding unit with a holding torque. A force-sensing device can be arranged between the holding unit and the non-rotatably held element, or between the holding unit and an intermediate component non-rotatably connected to the held component. The force-sensing device can measure the force acting between the held component and the holding unit as a result of the holding torque.

Abstract: A method for ascertaining an operating variable of a drum brake, the method using forces acting on supporting bearings. The invention further relates to an associated drum brake assembly, an associated analysis unit and an associated storage medium.

Abstract: A method for operating a motor vehicle brake system having hydraulic wheel brakes; an atmospheric pressure pressure medium reservoir; a pressure modulation unit setting wheel-specific brake pressures, an electrohydraulic pressure provision device connected to the pressure modulation unit and the pressure medium reservoir which outputs brake system pressure to the pressure modulation unit and draws in pressure medium from the reservoir; a first and second pressure activation valve connecting the pressure provision device to the pressure modulation device. A piston of the piston-cylinder arrangement separates two pressure spaces from one another. A pressure build-up occurs in the first pressure space during a backward movement of the piston and in the second pressure space during a forward movement of the piston. During a brake pressure build-up by a forward stroke of the piston, the activation valve is opened and the first pressure space is hydraulically separated from the pressure medium reservoir.

Abstract: A brake installation for a motor vehicle. First and second pressure provision devices build up brake pressure in the wheel brakes. The first pressure device connected to a first wheel brake of a first brake circuit and to a second wheel brake of the first brake circuit. The second pressure device connected to a third wheel brake of a second brake circuit and to a fourth wheel brake of the second brake circuit. Each pressure device is respectively activated by an open-loop/closed-loop control unit. A first hydraulic line, with a normally open isolating valve, connects the first wheel brake line of the first brake circuit to the first wheel brake line of the second brake circuit. A second hydraulic line, with a normally open isolating valve, connects the second wheel brake line of the first brake circuit to the second wheel brake line of the second brake circuit.

Abstract: A planetary gear assembly, in particular for an electromechanical service or parking brake for a motor vehicle. The planetary gear assembly can include a central sun gear, a plurality of planetary gears rotatably mounted on a planetary carrier, and a ring gear enclosing the planetary gears. The planetary gears can be mounted by the planetary carrier, such that the planetary gears roll off both the sun gear and the ring gear, whereby the sun gear, the planetary carrier or the ring gear is non-rotatably held by a holding unit with a holding torque. A force-sensing device can be arranged between the holding unit and the non-rotatably held element, or between the holding unit and an intermediate component non-rotatably connected to the held component. The force-sensing device can measure the force acting between the held component and the holding unit as a result of the holding torque.