A circuit has a fluid line matrix and brake components connected to the fluid line matrix. Changes in the brake designs or brake functions can be carried out easily in that at least one interface is provided for connecting a distributor block. The interface is designed such that a configuration of the fluid line matrix can be formed by connecting or exchanging the distributor block. There is also described a distributor block which is suitable for forming a configuration of the fluid line matrix of the circuit by connecting to the at least one interface of the circuit.

A method for automatic electronic control of a brake system in a vehicle includes reading a brake signal for the automatic electronic control of brakes in the vehicle, wherein requests to be implemented by the brakes are transmitted via the brake signal to bring about automatically requested target vehicle longitudinal dynamics. The method further includes determining a brake pressure distribution indicating a ratio of a front axle brake pressure of a front axle to a rear axle brake pressure of a rear axle, and providing at least a first brake pressure signal of the first electronic control unit to at least a first electropneumatic control device, taking into account the braking request signal and the brake pressure distribution for controlling the front axle brake pressure and the rear axle brake pressure, and receiving the brake pressure distribution at a second electronic control unit and storing the detected brake pressure distribution.

The present invention relates to an electronic parking brake device for a vehicle, in particular a utility vehicle. As a function of at least one operating state of a towing vehicle parking brake supply line and/or a trailer parking brake supply line, a towing vehicle parking brake control valve is activatable by a control unit in such a way that a towing vehicle parking brake supply line can be deaerated or aerated by the towing vehicle parking brake control valve. By manually actuating a trailer parking brake control element, a trailer parking brake control valve is activatable by the control unit in such a way that a trailer parking brake supply line can be deaerated or aerated by the trailer parking brake control valve. The present invention also relates to a method for operating the above electronic parking brake device for a vehicle.

The invention provides a vehicle brake system including a brake assembly providing a service brake and a parking brake having a brake disc assembly in common, a service brake circuit, a parking brake circuit, and a brake control arrangement adapted to control the service brake by selectively providing a fluid communication between a pressurising arrangement and the service brake via the service brake circuit, the brake control arrangement further being adapted to control the parking brake by selectively providing a fluid communication between the pressurising arrangement and the parking brake via the parking brake circuit, and by selectively draining the parking brake circuit, wherein the vehicle brake system includes a draining circuit adapted to drain the service brake circuit to avoid overload of the brake disc assembly.

An electropneumatic parking brake module includes a supply connection configured to connect a compressed air supply, at least one spring-type actuator connection configured to connect at least one spring brake cylinder, and an inlet-outlet valve unit configured to assume at least a first switching position and a second switching position. The parking brake module further includes an electropneumatic pilot control unit configured to output at least a first control pressure at the inlet-outlet valve unit. In the first switching position of the inlet-outlet valve unit, the spring-type actuator connection is connected to the supply connection for outputting a spring brake pressure, and, in the second switching position of the inlet-outlet valve unit, the spring-type actuator connection is connected to a venting connection of the inlet-outlet valve unit. The inlet-outlet valve unit is in the second switching position when the first control pressure is below a first threshold value.

A pneumatic brake system (110) for a commercial vehicle (1) has one spring brake (27), a protection valve (56), a parking brake unit (30), a network of pipelines (40), at least a first (4) and a second (5) tank with compressed air and a relay valve (19) for the parking brake unit (30). A first subnetwork of pipelines (40a) comprises pipelines configured to be pressurized at all times. A second subnetwork of pipelines (40b) comprises at least one pipeline configured to be non-pressurized when the parking brake function is applied. The first subnetwork (40a) comprises pipelines establishing fluid communication between the tanks (4, 5) and the parking brake unit (30), wherein the direction of air flow in these pipelines is by at least one thereto associated valve (50). A method for managing an air flow to an air-actuated spring brake (27) of a pneumatic brake system (110) is disclosed.

A method for controlling a pneumatic or electro-pneumatic service brake device of a vehicle is provided. In the method a driver brake request occurs by actuating a service brake actuating element of a service brake valve device of the braking device. In response to actuating the service brake actuating element, at least one control piston of the service brake valve device is loaded with a first actuating force in order to generate a pneumatic brake pressure or brake control pressure in at least one pneumatic service brake circuit of the service brake device. The control piston directly or indirectly controls at least one double-seat valve of the service brake valve device. The at least one double-seat valve includes an inlet seat and an outlet seat. The at least one control piston of the service brake valve device in addition is loaded by a second actuation force additionally or instead of the first actuation force. The second actuation force, which is generated independently of a driver braking request, is applied to the at least one control piston in parallel to the first actuation force, either in the same direction or in the counter direction.

A brake actuator is disclosed having a transfer element configured to be moved along an actuating direction and to actuate a brake by moving into at least one actuating position; an actuating mechanism configured to move the transfer element into the at least one actuating position to actuate the brake, wherein the actuating mechanism is configured to be movable along the actuating direction; and a distancing mechanism configured to move the actuating mechanism from a non-operating position into an operating position along the actuating direction. The transfer element and the actuating mechanism are configured such that the transfer element is located in the actuating position when the actuating mechanism is located in the non-operating position.

A spring brake chamber for pneumatic braking systems used in heavy commercial vehicles such as buses, trucks, trailers and tractors, includes a power spring configured to detect the parking position, the driving position and the situation in which the power spring is broken. The present invention allows the driver to be notified by sending a signal.

An air braking system for a vehicle can include an air compressor, a reservoir, a first air line, a brake hub, a second air line, a control valve, a release valve, and a third fluid line. The first line can place an outlet of the compressor in fluid communication with an inlet of the reservoir. The brake hub can have a chamber in fluid communication with the outlet of the reservoir via the second line. The control valve can selectively open and close the second air line. The release valve can be in fluid communication with the chamber and having an outlet. The third line can place the outlet of the release valve in fluid communication with an inlet of the compressor.