Methods and corresponding control devices for releasing an electric actuator in a reliable manner, such as an electric parking brake in particular, in a motor vehicle brake system. The aim of the invention is to provide an improved function and architecture which helps prevent the disadvantages of open-loop control systems when using a rationalized sensor system, thereby obviating closed-loop control systems. This is achieved by a release method and a corresponding electronic control unit which obtains an especially modulated change in the power requirement during the release process upon impacting the quasi-elastic release end stop of the electric actuating unit such that the change is fed back, the change being detected in order to be used as information for a power interruption or a termination of the power supply to the electric actuating unit.

A novel, particularly rationally designed, modular parking brake actuator for an electric drum brake system. An axle A1 from the motor, including a screw gear pinion coupled in a rotationally fixed manner, and an axle A2 of the spindle arrangement, including a screw gear which is coupled in a rotationally fixed manner to the drive nut, define under a deflection of 90 a single wheel gearbox stage of the parking brake actuator.

An electro-mechanical braking apparatus includes a braking motor and a lock apparatus. One end of a motor shaft of the braking motor is configured to drive a brake, and the lock apparatus is configured to lock the braking motor through the other end of the motor shaft of the braking motor. The lock apparatus includes a clutch, an axial moving member, and a driving motor. The clutch is sleeved on the other end of the motor shaft of the braking motor. The driving motor is configured to drive the axial moving member to move away from or toward the clutch.

A brake control device is configured such that a hydraulic braking device is provided for one of a front wheel and a rear wheel, and an electric braking device is provided for the other one of them. The electric braking device is provided with a mechanism configured to prohibit retreat of a piston for pressing friction members against a rotor that rotates with the wheel. The brake control device is configured to maintain, by an operation of the mechanism, a braking force that does not depend on a force of an electric motor as a drive force and to control a braking force generated by the hydraulic braking device based on a difference between the braking force thus maintained and a braking force requested for the electric braking device.

A brake system and method of adjusting a brake. The method may include the steps of providing a mechanically operated brake including friction material, providing a rotor, providing an adjuster for adjusting a running clearance between the friction material and the rotor, providing a sensor system for determining a likelihood of a braking event, and upon a determination of a change in the likelihood of a braking event operating the adjuster to adjust the running clearance of the brake.

A wheel brake apparatus for an electric vehicle, a parking control method, and an electromechanical brake system. The wheel brake apparatus includes a wheel controller, a brake unit, and a parking unit. The brake unit includes a brake motor and a brake caliper. The brake motor is configured to drive the brake caliper to clamp a brake disc of the electric vehicle. The parking unit is configured to lock the brake motor when the electric vehicle is being parked. When the parking unit locks the brake motor, the brake motor rotates, so that a locking mechanism of the parking unit can more easily lock the brake motor, to improve a parking success rate and parking efficiency, and ensure safety and reliability of the electric vehicle.

An electromechanical wheel brake for a motor vehicle, has an electromotive drive assembly designed to impinge a drive shaft with a torque. A transmission assembly transmits a torque acting on the drive shaft to an output shaft. A clamping device converts a torque acting on the output shaft into a clamping force acting along a clamping direction. A clamping force sensor system determines the clamping force generated by the clamping device. A control unit controls the drive assembly on the basis of a brake request and an applied clamping force. The drive assembly, the transmission assembly and the clamping device are each functional modules which can be checked for their respective function and, in the installed state, enter into operative connection via correspondingly designed interfaces. In the installed state of the wheel brake the interfaces establish a signal connection between the control unit and the clamping force sensor system.