An electro-hydraulic motor vehicle brake system is provided, having a first cylinder-piston device, which can be fluidically coupled to at least one wheel brake of the brake system, for generating hydraulic pressure on the at least one wheel brake, wherein the first cylinder-piston device comprises at least one first piston. The brake system further has a second cylinder-piston device, which comprises at least one second piston, and an electromechanical actuator which acts on the second piston of the second cylinder-piston device. The second cylinder-piston device is or can be fluidically coupled at the output side to the first piston of the first cylinder-piston device in order to provide a hydraulic pressure, which is generated in the second cylinder-piston device upon actuation of the electromechanical actuator, for actuating the at least one first piston of the first cylinder-piston device.

A brake system for motor vehicles may include an actuation device (e.g., brake pedal), a travel simulator to generate a feedback force on the actuation device, a first piston-cylinder unit having at least one piston that separates two working chambers that are connected via at least one hydraulic line to at least one wheel brake of a brake circuit, a control device and a pressure supply unit driven by an electric motor. At least one wheel brake may be assigned to each brake circuit, and each wheel brake may be connected to its associated hydraulic connecting line via a controllable switching valve. An outlet valve may be assigned to a single wheel brake or to a single wheel brake of each brake circuit in a hydraulic connection between the wheel brake and a pressure medium storage container, without any further valve disposed as such.

Disclosed is an apparatus for moving a brake pedal. The apparatus for moving a brake pedal according to the disclosure includes a pedal simulator providing a reaction force according to a pedal effort of the brake pedal and having one side connected to the brake pedal through an input rod, a screw fixed to the other side of the pedal simulator and having a first screw thread formed on an outer circumferential surface thereof, an anti-rotation portion configured to prevent rotation of at least one of the pedal simulator and the screw, and an actuator configured to provide power, wherein the first screw thread is connected to the actuator to receive a rotational force, and the screw converts the rotational force into a translational motion by the anti-rotation portion, thereby generating the translational motion of the pedal simulator and the brake pedal fixed or connected to the screw.

A method for operating a braking system, having a front and rear axle, the braking system including: a brake booster having a brake input element, coupled to an actuating travel sensor for providing a signal of a braking input; a brake master cylinder coupled to the brake booster coupled to a brake medium reservoir; fluid lines, in fluidic communication with the brake master cylinder and the brake medium reservoir, and with braking devices of the wheels via a system of valves, each of the wheels being coupled to a generator generating a braking torque, the method including: generating a hydraulic free travel with the valves and controlling valves with a control unit, a hydraulic pressure build-up for decelerating a wheel speed being prevented by generating free travel during actuation of the brake input element; and generating a regenerative braking torque for decelerating the wheel speed, based on the braking input.

A brake system for a vehicle, including: a master brake cylinder having a first chamber, a rod piston, which, together with at least one first hydraulically active surface area, bounds the first chamber, a second chamber and a floating piston; the rod piston being configured with or couplable to a second hydraulically active surface area; the second hydraulically active surface area bounding an auxiliary chamber of the master brake cylinder or of another brake cylinder, and the auxiliary chamber being attached to an accumulator chamber and/or to the hydraulic reservoir via a first nonreturn valve and a restrictor that is configured in a further fluid line.

A hydraulic booster brake system is provided. The system includes a pedal simulator capable of achieving an enhancement in backup braking performance and in design freedom of the pedal simulator. The system includes a main master cylinder that is connected to a brake pedal while being connected to the pedal simulator via the pedal-side hydraulic line, and a sub master cylinder that is connected to the brake pedal while being connected to the pedal simulator and a fluid reservoir via the pedal-side hydraulic line. A first simulator valve is installed at a portion of the pedal-side hydraulic line between the main master cylinder and the pedal simulator. A second simulator valve is installed at a portion of the pedal-side hydraulic line between the sub master cylinder and the fluid reservoir.

A brake pedal emulator extends and connects between a support structure and a brake pedal pivotally engaged to the support structure at an axis. The brake pedal emulator includes a rotational damping device operatively connected to the brake pedal for driven rotation as the brake pedal moves about the axis.

A brake device may include: a master cylinder including a master piston moved in connection with a pedal, and a master cylinder body having the master piston movably inserted therein and containing fluid of which hydraulic pressure is varied when the master piston is moved; a pedal force generation part housed in the master cylinder body, and restricting a motion of the master piston while interfering with the master piston depending on the motion of the master piston; a braking actuator configured to generate hydraulic pressure; an actuator connection part connecting the braking actuator to a brake mounted on a wheel; and a master connection part connecting the master cylinder to the actuator connection part.

A brake pedal apparatus for actuating a vehicle brake assembly includes a stationary structure, a brake pedal emulator assembly, and an emulator override device. The brake pedal emulator assembly includes a brake pedal operatively engaged to the stationary structure, and a brake pedal emulator operatively engaged between the stationary structure and the brake pedal along a centerline. The brake pedal emulator is configured to electrically operate the brake assembly. The emulator override device includes a mechanical linkage operatively engaged to the brake assembly, and a latch configured to selectively connect and disconnect the mechanical linkage from the brake pedal emulator assembly. The mechanical linkage is configured to mechanically operate the brake assembly via at least in-part movement of the brake pedal along the centerline.

A modular non-linear spring system capable of simulating traditional brake pedal feel when incorporated into a hydraulic and/or electro-hydraulic vehicle braking system. The system can include a first spacer having a top surface and a bottom surface and an optional second spacer having a top surface and a bottom surface. In one arrangement, a first mechanical spring is in abutting engagement with the top surface of said first spacer, a second mechanical spring is in abutting engagement with the bottom surface of said first spacer and the top surface of said second spacer, and an optional third mechanical spring is in abutting engagement with the bottom surface of said second spacer. The springs are arranged to be progressively compressed using a brake pedal of the braking system.