A compressed-air braking system of a tractor vehicle includes two service-brake circuits and a parking-brake circuit. A trailer control valve has a control input connected to a brake control line connected to a brake line of one of the service-brake circuits and an inverted control input connected to a further brake control line routed to a brake line of the parking-brake circuit. A valve device for braking a coupled trailer vehicle independently of the foot-brake valve has an electronically controllable valve unit arranged in the further brake control line routed to the inverted control input of the trailer control valve. Via the valve unit, the portion of the further brake control line on the trailer control-valve side can be connected alternately to the portion on the parking-brake valve side or to a depressurizing output.

A compressed-air braking system of a tractor vehicle includes two service-brake circuits and a parking-brake circuit. A trailer control valve has a control input connected to a brake control line connected to a brake line of one of the service-brake circuits and an inverted control input connected to a further brake control line routed to a brake line of the parking-brake circuit. A valve device for braking a coupled trailer vehicle independently of the foot-brake valve has an electronically controllable valve unit arranged in the further brake control line routed to the inverted control input of the trailer control valve. Via the valve unit, the portion of the further brake control line on the trailer control-valve side can be connected alternately to the portion on the parking-brake valve side or to a depressurizing output.

An electropneumatic ABS brake system is for a utility vehicle. The brake system has: a foot brake valve operable via a brake pedal and including pneumatic output channels, axle service brake circuits connected to the output channels and each having an axle valve unit and ABS valves for actuating wheel service brakes, a control unit for actuating the ABS valves and the axle valve units, and a first pressure sensor connected to one of the two pneumatic output channels and configured to measure the pneumatic control pressure output by the foot brake valve and to output a first pressure signal to the control unit. A second pressure sensor is provided separately from the first sensor and is configured to output a second pressure signal to the control unit, which receives the two pressure signals and actuates the ABS valves and/or the axle valve units as a function of the signals.

An electropneumatic ABS brake system is for a utility vehicle. The brake system has: a foot brake valve operable via a brake pedal and including pneumatic output channels, axle service brake circuits connected to the output channels and each having an axle valve unit and ABS valves for actuating wheel service brakes, a control unit for actuating the ABS valves and the axle valve units, and a first pressure sensor connected to one of the two pneumatic output channels and configured to measure the pneumatic control pressure output by the foot brake valve and to output a first pressure signal to the control unit. A second pressure sensor is provided separately from the first sensor and is configured to output a second pressure signal to the control unit, which receives the two pressure signals and actuates the ABS valves and/or the axle valve units as a function of the signals.

An electro-pneumatic central pressure control module, having at least two channels, implemented as a structural unit for an electro-pneumatic service brake of a vehicle, having at least two pressure control channels which are electrically controllable with regard to a brake pressure. A central electronic brake control device has a board, carrying electrical and electronic components, in which routines at least for controlling the brake pressure and for controlling the driving dynamics are implemented in the electrical and electronic components. At least one inertial sensor is arranged on or at the at least one board and is electrically conductively connected to at least several of the electrical and electronic components on the board so that the output signals of the at least one inertial sensor are integrated into the at least several electrical and electronic components for carrying out the control of the driving dynamics.

An electro-pneumatic central pressure control module, having at least two channels, implemented as a structural unit for an electro-pneumatic service brake of a vehicle, having at least two pressure control channels which are electrically controllable with regard to a brake pressure. A central electronic brake control device has a board, carrying electrical and electronic components, in which routines at least for controlling the brake pressure and for controlling the driving dynamics are implemented in the electrical and electronic components. At least one inertial sensor is arranged on or at the at least one board and is electrically conductively connected to at least several of the electrical and electronic components on the board so that the output signals of the at least one inertial sensor are integrated into the at least several electrical and electronic components for carrying out the control of the driving dynamics.

An engine system includes an engine, a crankshaft operatively coupled to the engine, a brake assembly, and an actuator assembly. The brake assembly includes a brake disc. The brake disc is coupled to the crankshaft. The actuator assembly includes a brake pad and an actuator. The brake pad is selectively positionable to contact the brake disc. The actuator is configured to selectively position the brake pad to contact the brake disc.

An engine system includes an engine, a crankshaft operatively coupled to the engine, a brake assembly, and an actuator assembly. The brake assembly includes a brake disc. The brake disc is coupled to the crankshaft. The actuator assembly includes a brake pad and an actuator. The brake pad is selectively positionable to contact the brake disc. The actuator is configured to selectively position the brake pad to contact the brake disc.

A pneumatic system comprises a first compressor and associated first air dryer for supplying dried air to a first set of consumers in a main circuit and a second compressor and associated second air dryer for supplying dried air to at least one further consumer through a subsidiary circuit. A protection valve system is provided in the main circuit between the first air dryer and the first set of consumers. A fluid flow path is provided between the main and subsidiary circuits which is selectively openable or closable by a coupling valve to enable the subsidiary circuit to be supplied with pressurized air from the main circuit or to isolate the main and subsidiary circuits.

A pneumatic system comprises a first compressor and associated first air dryer for supplying dried air to a first set of consumers in a main circuit and a second compressor and associated second air dryer for supplying dried air to at least one further consumer through a subsidiary circuit. A protection valve system is provided in the main circuit between the first air dryer and the first set of consumers. A fluid flow path is provided between the main and subsidiary circuits which is selectively openable or closable by a coupling valve to enable the subsidiary circuit to be supplied with pressurized air from the main circuit or to isolate the main and subsidiary circuits.