Abstract: A device designed for controlling and regulating an electro-pneumatic parking brake circuit includes a manual controller configured to actuate a parking brake via the electro-pneumatic parking brake circuit, the manual controller having a first circuit arrangement and a second circuit arrangement, the first circuit arrangement being a digital, bidirectional circuit arrangement and the second circuit arrangement being an analog circuit arrangement. The device further includes control electronics electrically connected to the manual controller. The first circuit arrangement is connected to the control electronics via a first connection cable and the second circuit arrangement is connected to the control electronics via a second connection cable. The first connection cable is a digital data transmission channel configured to enable a digital data transmission between the digital circuit arrangement and the control electronics.

Abstract: A relay valve (10) for a pneumatic valve unit (14), for example for a braking system of a utility vehicle, has a first assembly component (18) and a second assembly component (20). A hollow cylindrical guide portion (28) of a piston (24) of the relay valve (10) is received, in an axially guided manner, in the first assembly component (18). The second assembly component (20) includes additional valve components and the venting region of the relay valve (10). At least the first assembly component (18) and the second assembly component (20), when assembled, form a preassembly unit (26) first assembly component (18) and are joined by a bayonet connection (30). The preassembly unit (26) is inserted into a housing (12) of the valve unit (14), The interior of the housing is delimited by a cup-shaped inner wall (32), and the preassembled unit is fastened therein.

Abstract: A relay valve (10) for a pneumatic valve unit (14), for example for a braking system of a utility vehicle, has a first assembly component (18) and a second assembly component (20). A hollow cylindrical guide portion (28) of a piston (24) of the relay valve (10) is received, in an axially guided manner, in the first assembly component (18). The second assembly component (20) includes additional valve components and the venting region of the relay valve (10). At least the first assembly component (18) and the second assembly component (20), when assembled, form a preassembly unit (26) first assembly component (18) and are joined by a bayonet connection (30). The preassembly unit (26) is inserted into a housing (12) of the valve unit (14), The interior of the housing is delimited by a cup-shaped inner wall (32), and the preassembled unit is fastened therein.

Abstract: A device designed for controlling and regulating an electro-pneumatic parking brake circuit includes a manual controller configured to actuate a parking brake via the electro-pneumatic parking brake circuit, the manual controller having a first circuit arrangement and a second circuit arrangement, the first circuit arrangement being a digital, bidirectional circuit arrangement and the second circuit arrangement being an analog circuit arrangement. The device further includes control electronics electrically connected to the manual controller. The first circuit arrangement is connected to the control electronics via a first connection cable and the second circuit arrangement is connected to the control electronics via a second connection cable. The first connection cable is a digital data transmission channel configured to enable a digital data transmission between the digital circuit arrangement and the control electronics.

Abstract: An electropneumatic pilot unit for controlling a pneumatic consumer is provided herein. The pilot unit comprises at least two electromagnetic pilot valves. Each of the electromagnetic pilot valves comprises a coil for producing a magnetic flux along a valve axis, an armature which can be moved in the axial direction of the valve axis, a valve seat which can be closed and opened by the armature, and a pneumatic inlet port and a pneumatic outlet port. At least two of the pilot valves lie next to each other with parallel valve axes. Each pilot valve has a port which protrudes towards a common underside for connection to a pilot chamber of the consumer controlled by the pilot valves.

Abstract: A sensor unit (2) for a motor vehicle or trailer is disclosed. The sensor unit comprises a sensor measuring arrangement (16) for sensing at least one physical variable, a sensor housing (12) partly or fully enclosing the sensor measuring arrangement (16) and at least two connecting lines (18). The sensor unit (2) with the sensor housing (12) is electrically connectable to a conductive part of the motor vehicle or trailer and the sensor measuring arrangement (16) is connectable to an analyzer (6) via the connecting lines (18). Related methods, a sensing and analysis device, and motor vehicles or trailers including the same are also disclosed.

Abstract: An electropneumatic pilot unit for controlling a pneumatic consumer is provided herein. The pilot unit comprises at least two electromagnetic pilot valves. Each of the electromagnetic pilot valves comprises a coil for producing a magnetic flux along a valve axis, an armature which can be moved in the axial direction of the valve axis, a valve seat which can be closed and opened by the armature, and a pneumatic inlet port and a pneumatic outlet port. At least two of the pilot valves lie next to each other with parallel valve axes. Each pilot valve has a port which protrudes towards a common underside for connection to a pilot chamber of the consumer controlled by the pilot valves.

Abstract: A valve arrangement for brake control of a vehicle braking system which is operated using pressure medium includes a relay valve arranged in a housing, and a solenoid valve configured for controlling the relay valve. The relay valve has an axially displaceable relay valve piston with a first annular sealing seat configured to be acted on with a control pressure which is directed into a control pressure chamber and which can be adjusted by the solenoid valve, having an axially displaceable plate valve having a radial sealing face, and having an insert secured to the housing which separates an operating chamber from a pressure chamber and which has a second annular sealing seat which is arranged coaxially relative to the first annular sealing seat of the relay valve piston. The first and second annular sealing seats cooperate simultaneously or alternately with the radial sealing face of the plate valve.

Abstract: A brake pressure modulator (1) of an electronic braking system of a utility vehicle includes pressure control circuits (13, 14) respectively associated with a braking circuit of a vehicle axle, each pressure control circuit (13, 14) comprises a compressed air supply system (4, 5), at least one redundancy control pressure path (21), at least one ventilation path (19, 19a) and a common electronic control unit (2). Said pressure control circuits (13, 14) can be controlled independently from each other by the electronic control unit (2). Each pressure control circuit (13, 14) has an independent ventilation path (19, 19a) and at least one of the pressure control circuits (13, 14) has an independent redundancy control pressure path (21) and at least one other of the pressure control circuits (13, 14) comprises a device (16a) for forced venting in the event of a failure by means of the associated ventilation path (19a).

Abstract: A sensor unit (2) for a motor vehicle or trailer is disclosed. The sensor unit comprises a sensor measuring arrangement (16) for sensing at least one physical variable, a sensor housing (12) partly or fully enclosing the sensor measuring arrangement (16) and at least two connecting lines (18). The sensor unit (2) with the sensor housing (12) is electrically connectable to a conductive part of the motor vehicle or trailer and the sensor measuring arrangement (16) is connectable to an analyzer (6) via the connecting lines (18). Related methods, a sensing and analysis device, and motor vehicles or trailers including the same are also disclosed.

Abstract: A brake pressure modulator (1) of an electronic braking system of a utility vehicle includes pressure control circuits (13, 14) respectively associated with a braking circuit of a vehicle axle, each pressure control circuit (13, 14) comprises a compressed air supply system (4, 5), at least one redundancy control pressure path (21), at least one ventilation path (19, 19a) and a common electronic control unit (2). Said pressure control circuits (13, 14) can be controlled independently from each other by the electronic control unit (2). Each pressure control circuit (13, 14) has an independent ventilation path (19, 19a) and at least one of the pressure control circuits (13, 14) has an independent redundancy control pressure path (21) and at least one other of the pressure control circuits (13, 14) comprises a device (16a) for forced venting in the event of a failure by means of the associated ventilation path (19a).

Abstract: A valve arrangement for brake control of a vehicle braking system which is operated using pressure medium includes a relay valve arranged in a housing, and a solenoid valve configured for controlling the relay valve. The relay valve has an axially displaceable relay valve piston with a first annular sealing seat configured to be acted on with a control pressure which is directed into a control pressure chamber and which can be adjusted by the solenoid valve, having an axially displaceable plate valve having a radial sealing face, and having an insert secured to the housing which separates an operating chamber from a pressure chamber and which has a second annular sealing seat which is arranged coaxially relative to the first annular sealing seat of the relay valve piston. The first and second annular sealing seats cooperate simultaneously or alternately with the radial sealing face of the plate valve.

Abstract: A solenoid-valve unit for an electropneumatic controller, especially a pilot-control unit of an electropneumatic pressure modulator of a vehicle, includes a solenoid-valve unit having a valve-housing bottom with compressed-air bores, and solenoid valves having solenoids and displaceable magnet armatures. The solenoids are disposed outside of the valve-housing bottom. At least one pressure sensor for measuring pneumatic pressure in a compressed-air bore of the valve-housing bottom is placed in or on the valve-housing bottom. Electric leads to the solenoids and to the pressure sensor are routed to a common electrical interface.

Abstract: A solenoid-valve unit for an electropneumatic controller, especially a pilot-control unit of an electropneumatic pressure modulator of a vehicle, includes a solenoid-valve unit having a valve-housing bottom with compressed-air bores, and solenoid valves having solenoids and displaceable magnet armatures. The solenoids are disposed outside of the valve-housing bottom. At least one pressure sensor for measuring pneumatic pressure in a compressed-air bore of the valve-housing bottom is placed in or on the valve-housing bottom. Electric leads to the solenoids and to the pressure sensor are routed to a common electrical interface.

Abstract: A pre-engagement unit for a braking pressure modulator for a pressure regulating circuit includes a first pneumatic inlet, a second pneumatic inlet, a first pneumatic output terminal, and a second pneumatic output terminal. The unit includes an electrically actuated valve system having a plurality of solenoid valves and a plurality of electrical terminals connected to output terminals of an electronic control unit. An electric braking command signal transmitter delivers a driver initiated electric brake value setting to an input of the electronic control unit. Under normal conditions, a supply pressure and a redundancy pressure are delivered at the first pneumatic output terminal to be converted by an air quantity augmenting relay valve to a braking pressure. In case of failure of the electronic braking system, the redundancy pressure is delivered at the first pneumatic output terminal to be converted by the air quantity augmenting relay valve to the braking pressure.

Abstract: A pressure control apparatus for adjusting the brake pressure in a braking system of a vehicle comprises a reservoir in which a pressure fluid is stored, an outlet through which the pressure fluid is discharged, at least one brake cylinder of the braking system, inlet and outlet valves through which the pressure fluid is supplied to and discharged from the brake cylinder, and a digital controller which controls the opening and closing of the inlet and outlet valves to minimize the deviation between an actual value and a command variable. The digital controller comprises individual controllers associated with the inlet and outlet valves. The individual controllers operate in accordance with a changeable PIDD.sup.2 control formula. The digital control further comprises a three-stage controller connected downstream of the individual controllers and adjustable low pass filters for the inlet and outlet valves. A pressure phase detector determines the current pressure phase to be set (i.e.

Abstract: In a vehicle train comprising a motor vehicle and a trailer, a process for monitoring a trailer brake for overload comprises producing an energy call-up signal during a braking action, supplying energy to a motor vehicle brake in the motor vehicle, the amount of energy being supplied to the motor vehicle being determined, at least in part, by the value of the energy call-up signal, producing a trailer energy signal, the value of the trailer energy signal being determined, at least in part, by the value of the energy call-up signal, and supplying trailer energy to a trailer brake in the trailer, the amount of trailer energy supplied to the trailer brake being determined, at least in part, by the value of the trailer energy signal. The process further comprises monitoring the coupling force appearing at a coupling between the motor vehicle and the trailer, and adjusting the coupling force based on the trailer energy signal.

Abstract: In a vehicle train comprising a motor vehicle and a trailer, a process for monitoring a motor vehicle trailer brake for overload comprises producing an energy call-up signal during a braking action, supplying energy to the motor vehicle brake in the motor vehicle, the amount of energy being supplied to the motor vehicle being determined, at least in part, by the value of the energy call-up signal, producing a trailer energy signal, the value of the trailer energy signal being determined, at least in part, by the value of the energy call-up signal, and supplying trailer energy to a trailer brake in the trailer, the amount of trailer energy supplied to the trailer brake being determined, at least in part, by the value of the trailer energy signal. The process further comprises monitoring the coupling force appearing at a coupling between the motor vehicle and the trailer, and adjusting the coupling force based on the trailer energy signal.

Abstract: A process and apparatus for the braking with optimized stability of a vehicle train is disclosed. The vehicle train comprises at least two individual vehicles, one of the individual vehicles supporting the individual vehicle. The process comprises supplying energy to the brakes of the vehicles, thereby actuating the brakes and producing an actual force between the vehicles, and measuring the actual-value horizontal and vertical components (F.sub.hact, F.sub.vact) of the actual force (F.sub.act) acting between the supporting and supported vehicle. A desired-value horizontal force component (F.sub.hdes) of the force is determined by multiplying the actual-value vertical component (F.sub.vact) by the ratio of the actual-value train deceleration (b) to the earth's acceleration (g). The desired-value horizontal force component (F.sub.hdes) is then compared with the actual-value force horizontal component (F.sub.hact). The energy supplied to the brakes is adjusted so that F.sub.