The disclosure relates to an actuating system for a vehicle brake, with an actuating arrangement, in particular a brake pedal, at least one (first) piston-cylinder unit, which is connected via a hydraulic line to the vehicle brake (braking circuit) in order to supply the braking circuit with pressure medium and apply pressure to the vehicle brake, and with a drive for the piston-cylinder unit. Pressure medium can be fed to the braking circuit in controlled manner in both piston movement directions, in particular the advance stroke and the return stroke, by means of at least one, in particular stepped, piston of the piston-cylinder unit.

A power-operated hydraulic brake system for a wheeled vehicle includes a main brake line; a brake valve configured to input a target brake pressure into the main brake line, the brake vale configured to be actuated via a brake pedal; a plurality of wheel brake lines branching off from the brake valve, each of which leads to an actuating unit of a wheel brake; and a valve assembly of an ABS control system. The valve assembly includes an inlet valve arranged between the main brake line and one of the wheel brake lines, and an outlet valve arranged between the relevant wheel brake line and an unpressurized return line. The inlet valve and the outlet valve are pressure-controlled 2/2-way switching valves with correspondingly large switching cross sections, and the inlet valve and the outlet valve are each assigned at least one pilot valve designed as a solenoid switching valve.

An electronic hydraulic brake device includes a main braking part and an assist braking part. The main braking part is configured to drive a motor to provide hydraulic pressure to a plurality of wheel cylinders. The assist braking part is connected to the main braking part. The assist braking part is configured to provide auxiliary hydraulic pressure to the plurality of wheel cylinders in response to an operation error of the main braking part.

A braking system for a vehicle, which includes both a primary brake system, and a secondary brake system. A plurality of braking units are controlled by the primary brake system when the primary brake system is active, and at least one of the plurality of braking units controlled by the secondary brake system when the primary brake system is inactive. An actuator is part of the primary brake system, and the actuator is controlled by a primary controller. The primary controller selectively actuates the actuator to control the fluid pressure in the primary brake system to selectively actuate the plurality of braking units when the primary brake system is active, and when the primary brake system is inactive, the secondary brake system generates a boost pressure in the at least one of the plurality of braking units controlled by the secondary brake system.

An electronic hydraulic brake device includes a main braking part and an assist braking part. The main braking part is configured to drive a motor to provide hydraulic pressure to a plurality of wheel cylinders. The assist braking part is connected to the main braking part. The assist braking part is configured to provide auxiliary hydraulic pressure to the plurality of wheel cylinders in response to an operation error of the main braking part.

A work machine with a mechanical brake touch-up system includes a power source that provides power to a rotational element. The work machine includes a brake that is configured with a piston to selectively engage a frictional element rotationally coupled to the rotational element, a position sensor for generating a position signal of the piston, and a control valve configured to supply hydraulic pressure to the piston to selectively apply a retarding torque to the frictional element, a speed sensor for generating a rotational speed signal. The work machine includes a touch-up controller which is configured to detect a retarding condition of the work machine based on the speed signal, and, upon detection of a retarding condition, control the position of the piston to a touch-up position between an engaged and retracted position.

A brake fluid pressure control device for a vehicle that can perform fluid pressure control on the brake fluid pressure applied to wheel brakes. It is determined whether the pressure increasing time in the current pressure increasing control exceeds determination time which is set on the basis of the pressure increasing time in past pressure increasing control. If the pressure increasing time in the current pressure increasing control exceeds the determination time, it is determined that the road surface on which the vehicle is travelling has changed from the road surface with a low coefficient of friction to the road surface with a high coefficient of friction.

A brake apparatus, for electrically driven motor vehicles, includes a traction motor at an axle of a vehicle, which traction motor is used both as drive motor and as brake system with recuperation of brake energy, a first piston-cylinder unit, which is actuatable by means of an actuating device, in particular brake pedal, a second piston-cylinder unit, which is actuatable by means of an electromotive drive and a non-hydraulic gearing apparatus, in particular spindle drive. The piston-cylinder units are connected via hydraulic connecting lines to wheel brakes of the motor vehicle. A pressure chamber of the first piston-cylinder unit is connected to two wheel brakes of a vehicle axle, and a pressure chamber of the second piston-cylinder unit is connected to a vehicle axle for active brake force feedback control and recuperation control in interaction with the traction motor.

A brake system for a transportation vehicle and a transportation vehicle having such a brake system. The brake system includes two brake circuits which each have a control unit and a battery, wherein the respective control unit actuates two of a total of four service brakes and at least one of at least two electric parking brakes. The brake system also has an electronic circuit element. The brake system forms a defect signal in response to a double fault affecting the two brake circuits and when a defect in at least one of the control units is detected, and/or in which a respective supply voltage of at least one of the control units drops below a predefined limiting value. The at least one electronic circuit element actuates the electric parking brakes when a defect signal is formed.

An electrohydraulic vehicle braking system is provided, comprising an electrically controllable first hydraulic pressure generator and an electrically controllable second hydraulic pressure generator. The braking system further comprises a first valve device for each wheel brake, having at least one first valve, wherein in an electrically uncontrolled state the first valve device separates its associated wheel brake from an output of the first hydraulic pressure generator, and in an electrically controlled state connects it to the output of the first hydraulic pressure generator. In addition, a second valve device for each wheel brake is provided, having a second valve between an output of the second hydraulic pressure generator and its associated wheel brake, as well as a third valve between this wheel brake and a first hydraulic fluid reservoir. The first valve device and the second valve device are arranged in parallel to one another.