The invention relates to a method (10) for operating a compressed air supply device (32) having a first valve unit (12) for pressurizing a compressor control port (14) via a compressor control line (16), a second valve unit (18) for opening a regeneration line (20), wherein the second valve unit…

The present invention relates to a method (200) for operating an electrically operable parking brake system (100) of a vehicle (104). According to the invention, it is contemplated that a transfer of the electrically operable parking brake system (100) from a released operating state into an…

The invention relates to a method (102) for operating an electrically operable parking brake system (100) of a vehicle (104) comprising a towing vehicle (106), wherein an execution of a trailer test function is initiated by applying the electrically operable parking brake system (100). According to…

The invention relates to a method (200) for operating an electrically operable parking brake system (100) of a vehicle (104). According to the invention it is contemplated that a transfer of the electrically operable parking brake system (100) from an applied operating state into a released…

The invention refers to a compressed air system (100) for a motor vehicle with an air supply system (200), comprising: - an electric drive motor (8), which can be controlled for variable speed, - an air compressor (9) coupled to be driven by the electric drive motor (8), - an electric power supply…

The present invention provides a four-state fluid cylinder (150) which may be operated by using only two direct solenoids. A special field of application of the presented four-state cylinder (150) may be automotive gearboxes with four rail positions. The cylinder (150) has a cylinder housing (340)…

The combination cylinder (12) comprises a driving brake cylinder (18) with a hydraulically operated piston (20) and a spring-loaded brake cylinder (30) which operates the handbrake. This has a hydraulically operated piston (36) which acts against the effect of a spring (34). A force transfer system…

The coupling head has a rubber seal (2) that is arranged in a piston (1) of a compressed air line. A stiffener (3) is arranged on inner periphery of the rubber seal extending over complete inner periphery. The rubber seal is designed cylindrically and is arranged together with the cylindrical…

The invention refers to a method for estimating a vehicle's, or, in a vehicle trailer combination having a tractor vehicle and a towed trailer, a tractor vehicle's sideslip angle, the method comprising the steps of: a) Gaining the following vehicle parameters from the vehicle: Axle distance, track…

The valve has a pneumatic relay valve (4) for controlling brake cylinder pressure (C) over a pilot circuit (1) for generation of time-defined pilot pressure (CV) for control proportional of the relay valve. An upstream device for generation of braking and release times of compressed air brake (T)…

The valve has a main air line (HL) for providing a pneumatic brake signal applied by a control piston (1) for actuating a valve mechanism (2). A supply pressure spacer (4) is inserted between a maximum relief valve (HDB) and a ventilation terminal (R) of a brake nozzle (5). A pressure reservoir (6)…

The present invention pertains to an air dryer device (102), in particular for a vehicle, comprising an air dryer cartridge (100) with a housing (104), the housing containing a dryer agent (106), a first air port (108, 116) providing fluid connection to the housing (104), and a second air port…

An electronic level control system for a tracer comprises an electronic level control adapted to control air flow in an air suspension on a trailer. Change in brake pressure applied to wheels of the trailer is made in dependence on a status of a park brake on a tractor with a pneumatic connection…

The present invention also pertains to a coupling head (10, 100, 200) for a trailer, the coupling head comprising a control inlet (16, 106. 206) connected or connectable to be in fluid communication with a control line (44) of the trailer, a supply inlet (14, 104, 204) connected or connectable to a…

The valve device (2) has a pilot valve unit (3) with a manually operated air valve (4) for ventilation of an air suspension bellows (5) of air suspension device (1). A main air valve unit (9) has two holding valves (11,12) formed in ventilation direction of air-suspension bellows downstream to a…

The valve (10) has an electromotor (18) coupled over a self-locking drive (20) i.e. linear jackscrew actuator, with a movable shift element (16), which is movable in an axial direction (14) opposite to a valve housing (12). Valve seats (22, 24) are spaced apart from one other in the axial direction…

The electrically actuated parking brake device (54) has an electrically operated valve (10) with a connection (62), which is coupled with a compressed air supply inlet (100) by a line section (98). The connection is coupled with an output connection (104) by another line section (102) for a trailer…

The disk brake has a brake caliper (8) with a vehicle-sided stationary brake carrier (1), in which a brake lining is guided. The brake lining is provided with a lining support plate (42) and a friction lining attached to the lining support plate. An inlet-side carrier horn (3) of the brake carrier…

The compressed air processing system (10) has a compressed air inlet (12) and an air drier cartridge (14), which is coupled with the compressed air inlet through a compressed air feed pipe (16). An outlet valve (18) is arranged in a vent line (22) branching out at a branching point (20) from a…

The coupling head assembly includes a pneumatic trailer coupling head and an electric trailer connector attached to the chassis of trailer. A pneumatic tractor-coupling head (6) and an electric traction vehicle terminal (7) are mounted to the chassis of towing vehicle (1) and are arranged opposite…

The service brake valve (1) has a pressure piece (10) with a blind hole-like tappet receptacle (8) to incorporate a tappet operated by a brake pedal. The pressure piece is guided on a radially inner guide surface of the piston wall of a piston (18). A combined guiding unit is provided between the…

The method involves detecting (S1) the wear values of the wheel brakes by the respective wear sensors and storing the wear values. The stored wear values are examined (S2). The results of the examining the stored wear values are compared (S3) with predetermined normal values or limits. The…

The device (10) has an air dryer (12) provided with a ladder-shaped air dryer housing (14). A multiloop protective valve (16) is provided with a valve shell (18). The air dryer housing and a valve housing are connected with each other. The air dryer housing comprises a protruding part that…

The valve (58) has a control piston (94) and a sleeve (96), which are independently movable away from each other in an axial direction (98). The control piston and the sleeve are arranged in a housing (122) e.g. single piece housing. An elastic element (100) applies a biasing force to the sleeve in…

The device (1) has an anti-lock braking system (ABS) pressure control valve (38) connected with an exchanging valve (36) at an output side. The control valve controls pressure controlled by the exchanging valve as control pressure in a brake cylinder (8) depending on brake slip present at a braked…

The valve device (22) has valve housing, where a control piston is axially guided in the valve housing in a movable manner. Two working ports (20,24) are designed, where a control input (50) is ventilated at a primary state of the valve device. A valve seat is movable in the direction of movement…

The method involves axially displacing a control piston over radial gaskets in valve housing. A control input (50) is ventilated in a switching state of a control valve device (22). The control input is deaerated in another switching state of the control valve device. An exhaust port (70) is…

The device (1) has a pressure medium reservoir (Z1) for temporary storage of compressed air. A control side (Z) of a relay valve of a driver brake valve (D) is subjected with the compressed air for adjusting process by the operation of a manual control part. A valve device (SV1) is controlled by…

The pneumatic pilot-controlled trailer control module (1) has a pneumatic brake circuit with a back-up valve (7), which is controlled by an electronic control unit (13). The backup valve stays in connection with the two control chambers on the outlet side and is seen up-stream the foot brake module…

The device (7) has an outlet (9) connected to a compressed air inlet (8) via an amount controlling device, and to a charge air inlet (6) via a flap element (16). The controlling device is closed when the flap element is partially or fully open. A control unit (15) controls the flap element and the…