The invention relates to electropneumatic equipment (1) of a vehicle comprising an electropneumatic parking brake device (2) having an electropneumatic parking brake control unit (EPB). According to the invention, the electropneumatic parking brake control unit (EPB) is supplied with electric energy by only two electric energy sources 52,54) which are independent of each other, a first electric energy source (52) and a second electric energy source (54).

[Problem] The present invention provides a brake hydraulic pressure controller capable of suppressing vibrations of the brake hydraulic pressure controller by lowering a position of center of gravity of the brake hydraulic pressure controller at the time of being mounted on a vehicle. [Means for Resolution] A brake hydraulic pressure controller for a four-wheeled motor vehicle that controls a hydraulic pressure of a brake hydraulic circuit includes: a housing; a motor mounted on a first surface of the housing; and plural electromagnetic control valves mounted on a second surface that opposes the first surface of the housing. The plural electromagnetic control valves are arranged in plural rows from a near side to a far side from a third surface that continues perpendicularly from both of the first surface and the second surface. Two circuit control valves and four booster regulators are arranged in the same row. The two circuit control valves are arranged in channels that connect piping ports, to which piping connected to a master cylinder is connected, and discharge sides of pumps driven by the motor. The four booster regulators are arranged in channels that connect the circuit control valves and piping ports, to which piping connected to wheel cylinders is connected.

An emergency brake device for a rail vehicle includes a compressed-air-brake system, wherein a braking process can be initiated by lowering the air pressure in a main air conduit and which includes an exclusively electric connection to a passenger emergency brake.

An electropneumatic brake control module (1) for utility vehicles (100) includes a supply port (2) for connecting a compressed air supply (3); a first axle channel port (4); a pneumatically controlled inlet/outlet valve unit (10) for outputting a first braking pressure (PB1) at the first axle channel port (4); and an electropneumatic pilot control unit (8) for outputting at least one first control pressure (P1) at the inlet/outlet valve unit (10). The brake control module (1) further includes a redundancy pressure port (6) for receiving a redundancy pressure (PR) and a redundancy valve unit (12) connected to the redundancy pressure port (6) for outputting a redundancy braking pressure (PBR) at the first axle channel port (4) in the event that the electropneumatic pilot control unit (8) has a fault.

The disclosure relates to a method for operating an electropneumatic parking brake module for an electronically controllable pneumatic brake system for a vehicle, in particular a commercial vehicle, having a supply port for receiving a supply pressure, at least one parking brake port for the connection of at least one parking brake cylinder, a main valve assembly which receives the supply pressure and is configured to output a spring brake pressure at the parking brake port in dependence on a control pressure, and a pilot valve assembly which receives the supply pressure and is to provide the control pressure, wherein the pilot valve assembly has a bistable valve which can be switched between a first air admission position and a second air release position, and a control unit for providing first and second switch signals to the pilot valve assembly.

A fail-safety valve unit is for a failure braking function of a pneumatic braking system for a vehicle. The fail-safety valve unit has a first and a second failure brake valve configured as monostable valves, and a main line which pneumatically connects a main port, which provides a first pressure, and a failure port. The first and second failure brake valves are connected pneumatically in series in the main line. The first and the second failure brake valves are controllable by different control units. The failure brake valves are open in an open position when not actuated such that the first pressure prevailing at the main port is provided as a failure brake pressure at the failure port such that, in a fault situation, in an electrical failure, and/or in a diagnostic situation, a failure braking operation is triggered via provision of the failure brake pressure at the failure port.

A solenoid valve, for controlling a brake pressure of a wheel brake of a slip-regulatable hydraulic brake system for a motor vehicle, includes a valve element, valve insert, valve seat, spring device, electromagnetic actuator, and armature. The valve element is longitudinally movably positioned at least partially in the valve insert, positioned between the armature and the valve seat, and configured to interact with the valve seat. The spring device, in an assembled position, has a force component acting on the valve element in an opening direction with respect to the valve seat. The electromagnetic actuator is configured to act on the valve element in a closing direction with respect to the valve seat. The valve element has a contact surface operatively connecting the valve element and armature, and configured such that a central axis of the valve element and the contact surface form a non-rectangular intersection angle.

An electronically controllable brake system for a vehicle includes at least one service brake circuit with service brakes and a service brake control module. A service-brake brake pressure can be fed to the service brakes, and the service-brake control module is configured to generate a service-brake control signal as a function of a braking specification. The service-brake brake pressure can be generated as a function of the service-brake control signal and specified to the service brakes, for the implementation of the braking specification via the at least one service brake circuit, under electrical control. The brake system further includes a trailer control valve with a trailer control module. The trailer control module is configured to receive and process an electronically communicated braking specification and the trailer control valve is configured to generate and output, under the control of the trailer control module, a redundancy control pressure.

A brake system may include a first pressure supply unit having an electromotive drive and arranged to supply pressure medium to first and second brake circuits; a motor-pump unit to supply pressure medium to at least one of the brake circuits; a second pressure supply unit, connected to the motor-pump unit via first and second hydraulic lines and arranged to supply pressure medium to at least one of the brake circuits; and a valve unit. The second pressure supply unit may be connected via a third hydraulic line to at least one of the brake circuits. The valve unit may include at least one feed valve via which the third hydraulic line may be at least partially reversibly shut off. An isolating valve may be disposed in at least one of the hydraulic lines to at least partially reversibly shut off the at least one hydraulic line.

A hydraulic system is provided. The hydraulic system may include a fluid pressure source in fluid communication with a supply line, a return line in fluid communication with a tank, a hydraulic function having a workport, a first control valve having a first proportional solenoid, a second control valve having a second proportional solenoid, and a controller. The controller being configured to selectively energize the first proportional solenoid, the second proportional solenoid, or the first proportional solenoid and the second proportional solenoid to control a system pressure differential, defined between the return line and the workport, within a range that is defined by a sum of a first predefined range defined by the first control valve and a second predefined range defined by the second control valve.