A brake booster system for assisting a braking operation of a motor vehicle having a brake booster is provided. The brake booster system may include a pressure piston of a brake master cylinder, an actuating element which is configured for deflecting the pressure piston, and a brake booster which is divided into two chambers by way of a diaphragm, the first chamber is connected to the pressure piston and has a pressure p1 and the second chamber is connected to the actuating element and has a pressure p2. Furthermore, in the brake booster system, there is a pressure build up apparatus which is configured to raise the pressure p2 above the pressure p1 by way of said pressure build up apparatus.

A method for operating a braking system of a motor vehicle includes an electromechanical parking brake for securing the parked motor vehicle and a hydraulic braking mechanism for braking the motor vehicle. The hydraulic braking mechanism includes a brake cylinder having a displaceable piston and hydraulic fluid in order to generate a braking torque in the motor vehicle. If a malfunction in the hydraulic braking mechanism is present, an additional braking torque is generated by way of the parking brake in order to brake the motor vehicle. The additional braking torque generated by the parking brake is adjusted so that, within in a linear range, the torque depends on a pedal force exerted on the brake pedal by the driver when a brake pedal of the motor vehicle is pressed.

A hydraulic block for an electronic brake system of the present invention is disclosed. According to one aspect of the present invention, a hydraulic block for an electronic brake system, which includes a plurality of valves and flow paths for adjusting braking hydraulic pressure supplied to a plurality of wheel cylinders, the hydraulic block including a pump accommodation bore which is provided in a front surface of the hydraulic block and accommodates a pump which supplies hydraulic pressure, a master cylinder accommodation bore which is provided in a first side surface of the hydraulic block and accommodates a master cylinder therein, a plurality of wheel cylinder connection ports which are provided in the front surface of the hydraulic block and communicate with the plurality of wheel cylinders, and a reservoir connection port which is provided in a second side surface of the hydraulic block and communicates with a reservoir which stores a pressurized medium, wherein, among the plurality of wheel cylinder connection ports, one or more of the wheel cylinder connection ports are vertically arranged at a left or right side of the pump accommodation bore, and the remaining wheel cylinder connection ports are arranged in a left-right direction on or under the pump accommodation bore may be provided.

A brake system for an electric vehicle, having two independent pressure build-up devices for building up hydraulic pressure in the brake circuits of the brake system. One of the pressure build-up devices is supplied with electrical energy via the high-voltage network of the electric vehicle. The other pressure build-up device is supplied with electrical energy via the low-voltage network of the electric vehicle.

An electric braking device generates a braking force at a wheel via application of a pressing force by a piston by linear motion of the piston in response to the transmission of a forward-direction rotational torque from an electric motor to a linear motion conversion mechanism. The electric braking device is provided with a one-way clutch that cuts off the transmission of a rotational torque between the electric motor and the linear motion conversion mechanism when applied with a rotational torque in a direction opposite to the forward direction and having a magnitude equal to or greater than a predetermined value.

This electric braking device comprises a linear motion conversion mechanism having a screw shaft caused to rotate by an electric motor, and a nut that moves linearly in response to the rotation of the screw shaft. The electric braking device generates braking force in a vehicle wheel due to a piston coupled to the nut moving linearly within a cylinder and applying pressure to brake fluid. In the electric braking device, a coil spring, of which the extending/retracting direction is the linear motion direction of the piston, is installed in such a state as to be sandwiched between the piston and the screw shaft, so as to be compressed in response to the linear movement of the screw shaft in a direction for reducing braking force and to generate repulsive force against the compression.

A hydraulic brake wear detection apparatus and a method for detecting a degree of pad wear of a brake pad of a hydraulic brake includes a caliper piston located at least partially within a caliper cavity and attached to the brake pad. The caliper piston includes a piston cavity extending from a caliper piston rim into a caliper piston body at a location longitudinally opposite, and spaced from, the brake pad. An internal piston is located at least partially within the piston cavity and is entirely enclosed in an internal space defined cooperatively by the piston cavity and the caliper cavity for reciprocal longitudinal motion with respect to the internal space. The internal piston is reciprocated by a predetermined volume of pressurized hydraulic fluid responsive to wear of the brake pad.

A brake device that puts a brake on a hydraulic motor includes a disc plate configured to rotate with a cylinder block, a brake piston supported by a first case, and brake springs compressed and placed between the brake piston and a second case. The second case has a dent shaped or projection shaped holding portion into which one ends of the brake springs are inserted, and the brake springs are held by the holding portion even in a state where the other ends are away from the brake piston.

In order to provide a hydraulic actuating system for actuating a parking lock of a motor vehicle, which hydraulic actuating system manages with as few components as possible which are simple, robust, relatively insusceptible to faults and inexpensive, with a simultaneously low installation space requirement, and the hydraulic layout of which hydraulic actuating system makes a simple actuation and a simple movement possible for locking and unlocking the parking lock, it is provided that a pumping device which can operate bidirectionally with a locking delivery direction and with a releasing delivery direction is used as pumping device, and check valves are arranged in the hydraulic circuit in such a way that, by way of actuation of the pumping device in the locking delivery direction, the parking lock moves into the locked position and, upon actuation of the pumping device in the releasing delivery direction, the parking lock moves into the released position.

An external force-supported hydraulic braking system of a wheeled vehicle includes two brake circuits each having a main brake line configured to be connected to a pressure-carrying supply line or to a pressureless return line via a brake valve and further having a number of wheel brake lines branching from the main brake line and including a valve assembly of a TCS system. The valve assembly of the TCS system has a single TCS control valve formed as a 6/2-way magnetic switching valve configured to, in a non-actuated state, block a pressure-carrying main pressure line against two bypass lines each leading directly to a respective main brake line, and connect the two return lines to a pressureless collective line, and further configured to, in the actuated state, connect the main pressure line to the two bypass lines and block the two return lines against the collective line.