Abstract: A brake system for vehicles, comprising hydraulically actuatable wheel brakes, a first electrohydraulic brake control device, having an associated pressure-medium. The first brake control device comprises a first pressure-providing device for supplying the wheel brakes. An inlet valve and an outlet valve for setting wheel-specific brake pressures, and a wheel-specific output pressure connection connected to the pressure-medium reservoir by the outlet valves. A second electrohydraulic brake control device, comprises a second pressure-providing device with a first pump having a suction side and a pressure side for supplying a first wheel brake of the wheel brakes. The second brake control device is connected downstream of the first brake control device and the suction side of the first pump is connected to a first of the output pressure connections of the first brake control device. A check valve is connected in parallel with the outlet valve of the first output pressure connection.

Abstract: A method for operating a brake system of a motor vehicle, comprises a hydraulic operational brake device that has hydraulically-actuatable wheel brakes on at least one front axle of the motor vehicle, a parking brake device having wheel brakes on a rear axle of the motor vehicle, each of which can be actuated by means of an electromechanical actuator, and wheel speed sensors on the wheels of said front and rear axles. During braking by means of said hydraulic operational brake device while the vehicle is travelling, braking is carried out by said parking brake device.

Abstract: A brake system comprises a first electrohydraulic open-loop and closed-loop control unit. The first electrohydraulic control unit comprises a master brake cylinder actuatable by a brake pedal; a first electrically controllable pressure-providing device; and an electrically controllable pressure-modulating device sets wheel-specific brake pressures for the wheel brakes. The electrically controllable pressure-modulating device has at least one electrically actuatable inlet valve for each wheel brake. A first pressure-medium reservoir for supplying the first electrohydraulic control unit with pressure medium is arranged on the first electrohydraulic control unit. The brake system also comprises a second electrohydraulic open-loop and closed-loop control unit, which comprises a second electrically controllable pressure-providing device for actuating at least some of the wheel brakes and electrically actuatable valves.

Abstract: A brake control device for at least four fluidically actuatable, especially hydraulically actuatable, wheel brakes of a vehicle brake system, which device includes at least one input pressure connection, a wheel-specific output pressure connection for every wheel brake, a pressure regulating valve array for setting wheel-specific brake pressures at the output pressure connections and a pressure source the brake control device having a wheel specific input pressure connection for every wheel brake.

Abstract: A method for operating a brake installation of a vehicle. A first electrically controllable pressure provision device provides brake pressure for actuating hydraulically actuatable brakes. A first electronic open-loop and closed-loop control unit, and a first pressure detection device, measures brake pressure provided by a primary brake system. A secondary brake system between the primary system and a part of the wheel brakes has a second electrically controllable pressure provision device provides brake pressure for actuating at least the part of the brakes. A second electronic open-loop and closed-loop control unit, and at least one second pressure detection device, the signals of which are processed in the second electronic open-loop and closed-loop control unit. The secondary system monitors the primary system based on signals from the second pressure detection device and on a predefined brake pressure demand to build up a brake pressure corresponding to the predefined brake pressure demand.

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 brake system for vehicles, in particular motor vehicles, including a master brake cylinder, in particular a tandem master brake cylinder, a brake booster which is connected upstream of the master brake cylinder, in particular at least four hydraulically actuatable wheel brakes, and a first electrohydraulic brake control device which includes a first pressure regulating valve arrangement for adjusting wheel-specific brake pressures, in particular an electrically actuatable pressure source, and a wheel-specific outlet pressure connection for each wheel brake, wherein the brake booster is designed to be electrically actuatable, and a second electrohydraulic brake control device is provided which includes a second pressure regulating valve arrangement, in particular for adjusting wheel-specific brake pressures, and which is connected in series between the first brake control device and the wheel brakes.

Abstract: A vehicle wheel system for motor vehicles includes a central wheel disc having an attachment flange for arrangement on a chassis component, and having a brake rotor which is provided coaxially with respect to a central rotational axis Ax and whose external circumference is secured to the wheel disc but is otherwise freely oriented in the radially inward direction. An aspect is a vehicle wheel system which is of lightweight construction and easy to maintain. The aspect is based on the brake rotor being secured in an exchangeable fashion by a plurality of support sections at its outer circumference with a detachable attachment and, for the purpose of conducting away heat, is secured in a thermally conductive fashion to a plurality of abutment sections on the circumference of the wheel disc, with the result that overall a modular design (MAB) is obtained.

Abstract: A brake system for vehicles, comprising hydraulically actuatable wheel brakes, a first electrohydraulic brake control device, having an associated pressure-medium. The first brake control device comprises a first pressure-providing device for supplying the wheel brakes. An inlet valve and an outlet valve for setting wheel-specific brake pressures, and a wheel-specific output pressure connection connected to the pressure-medium reservoir by the outlet valves. A second electrohydraulic brake control device, comprises a second pressure-providing device with a first pump having a suction side and a pressure side for supplying a first wheel brake of the wheel brakes. The second brake control device is connected downstream of the first brake control device and the suction side of the first pump is connected to a first of the output pressure connections of the first brake control device. A check valve is connected in parallel with the outlet valve of the first output pressure connection.

Abstract: A method for operating a brake system of a motor vehicle, comprises a hydraulic operational brake device that has hydraulically-actuatable wheel brakes on at least one front axle of the motor vehicle, a parking brake device having wheel brakes on a rear axle of the motor vehicle, each of which can be actuated by means of an electromechanical actuator, and wheel speed sensors on the wheels of said front and rear axles. During braking by means of said hydraulic operational brake device while the vehicle is travelling, braking is carried out by said parking brake device.

Abstract: A brake system comprises a first electrohydraulic open-loop and closed-loop control unit. The first electrohydraulic control unit comprises a master brake cylinder actuatable by a brake pedal; a first electrically controllable pressure-providing device; and an electrically controllable pressure-modulating device sets wheel-specific brake pressures for the wheel brakes. The electrically controllable pressure-modulating device has at least one electrically actuatable inlet valve for each wheel brake. A first pressure-medium reservoir for supplying the first electrohydraulic control unit with pressure medium is arranged on the first electrohydraulic control unit. The brake system also comprises a second electrohydraulic open-loop and closed-loop control unit, which comprises a second electrically controllable pressure-providing device for actuating at least some of the wheel brakes and electrically actuatable valves.

Abstract: A vehicle's electronic brake system is controlled to prevent rear-to-front body sway. A clamping force is applied to the rear and front axle brakes such that the clamping force is built up in the brakes of the rear axle before the clamping force is built up in the brakes of the front axle such that the distance of a rear part of the vehicle body relative to the roadway is substantially constant at the beginning of braking.

Abstract: A second electrohydraulic brake control device for a motor vehicle comprises a pressure control valve assembly, an controllable pressure source and a reservoir connection. For a group of wheel brakes, the second electrohydraulic brake control device is connected in series between the associated output pressure connections of a first or main brake control device and the vehicle wheel brakes.

Abstract: A hydraulic motor vehicle brake system arrangement includes an inlet pressure port, a tank port, an outlet pressure port, a normally open valve which can be controlled in an analog fashion and is arranged between the inlet pressure port and the outlet pressure port, and a pump with a suction side and a pressure side. The suction side of the pump is connectable to the inlet pressure port and to the tank port. A first check valve, which opens in the direction of the suction side, is arranged in the connection between the suction side and the tank port.

Abstract: The invention relates to a spring-force brake system having a brake operating unit, having at least one sensor for detecting a driver braking demand upon operation of the brake operating unit by the driver, having at least one actuation unit for setting and regulating a braking force. For this purpose, it is provided according to the invention that at least one primary electronic control and regulating unit is provided which is connected at the signal input side to at least one sensor and which activates the actuation unit as a function of or on the basis of the signals of the sensor, and that at least one secondary control and regulating unit is provided which is connected at the signal input side to at least one sensor and which activates the actuation unit on demand on the basis of or as a function of signals of the sensor.

Abstract: A brake control device for at least four fluidically actuatable, especially hydraulically actuatable, wheel brakes of a vehicle brake system, which device includes at least one input pressure connection, a wheel-specific output pressure connection for every wheel brake, a pressure regulating valve array for setting wheel-specific brake pressures at the output pressure connections and a pressure source the brake control device having a wheel specific input pressure connection for every wheel brake.

Abstract: A brake system for vehicles, in particular motor vehicles, including a master brake cylinder, in particular a tandem master brake cylinder, a brake booster which is connected upstream of the master brake cylinder, in particular at least four hydraulically actuatable wheel brakes, and a first electrohydraulic brake control device which includes a first pressure regulating valve arrangement for adjusting wheel-specific brake pressures, in particular an electrically actuatable pressure source, and a wheel-specific outlet pressure connection for each wheel brake, wherein the brake booster is designed to be electrically actuatable, and a second electrohydraulic brake control device is provided which includes a second pressure regulating valve arrangement, in particular for adjusting wheel-specific brake pressures, and which is connected in series between the first brake control device and the wheel brakes.

Abstract: A brake system for a motor vehicle includes on at least one wheel, an electric-regenerative brake and a friction brake that can be hydraulically actuated by a first generator of brake pressure using a fluid, wherein the friction brake can be connected via an actuatable inlet valve to the first generator of brake pressure and via a first actuatable outlet valve to a pressure accumulator, so that a volume of fluid applied by the first generator of brake pressure can be diverted via the first outlet valve into the pressure accumulator. The first generator of brake pressure can be connected to the pressure accumulator via a further hydraulic connection having a second actuatable outlet valve. A method for operating a brake system is also disclosed.

Abstract: The invention relates to a spring-force brake system having a brake operating unit, having at least one sensor for detecting a driver braking demand upon operation of the brake operating unit by the driver, having at least one actuation unit for setting and regulating a braking force. For this purpose, it is provided according to the invention that at least one primary electronic control and regulating unit is provided which is connected at the signal input side to at least one sensor and which activates the actuation unit as a function of or on the basis of the signals of the sensor, and that at least one secondary control and regulating unit is provided which is connected at the signal input side to at least one sensor and which activates the actuation unit on demand on the basis of or as a function of signals of the sensor.

Abstract: A device for determining a driving state of a two-axle motor vehicle, which driving state is formed from the driving situation of the motor vehicle and the state of the underlying surface, wherein output signals from vehicle on-board sensors are evaluated in order to determine the driving situation and wherein a routine for determining and/or estimating the friction value of the underlying surface is provided in order to determine the state of the underlying surface. Also disclosed is a method for operating a combined vehicle brake system, in particular for motor vehicles, having hydraulically actuable wheel brakes at a front axle and having electromechanically actuable wheel brakes at a rear axle, wherein the vehicle wheels assigned to the rear axle can be driven at least at times by an electric motor which can be operated as a generator for the recuperation of braking energy.