An ABS pressure control valve assembly for controlling the fluid pressure in a pressure-medium-operated brake system of a vehicle having brake slip control, by which the brake pressure in pressure-medium-operated brake actuators is adaptively adjusted for a locking tendency of individual wheels of the vehicle. Two membranes of two membrane valves are clamped between two housing parts and an intermediate plate. Also described are a pressure-medium-operated brake system of a vehicle with brake-slip control, including at least one such ABS pressure control valve assembly, and to a method for producing such an ABS pressure control valve assembly.

An ABS pressure control valve assembly for controlling the fluid pressure in a pressure-medium-operated brake system of a vehicle having brake slip control, by which the brake pressure in pressure-medium-operated brake actuators is adaptively adjusted for a locking tendency of individual wheels of the vehicle. Two membranes of two membrane valves are clamped between two housing parts and an intermediate plate. Also described are a pressure-medium-operated brake system of a vehicle with brake-slip control, including at least one such ABS pressure control valve assembly, and to a method for producing such an ABS pressure control valve assembly.

An ABS pressure control valve assembly for controlling the fluid pressure in a pressure-medium-operated brake system of a vehicle having brake slip control, by which the brake pressure in pressure-medium-operated brake actuators is adaptively adjusted for a locking tendency of individual wheels of the vehicle. Two membranes of two membrane valves are clamped between two housing parts and an intermediate plate. Also described are a pressure-medium-operated brake system of a vehicle with brake-slip control, including at least one such ABS pressure control valve assembly, and to a method for producing such an ABS pressure control valve assembly.

An ABS pressure control valve assembly for controlling the fluid pressure in a pressure-medium-operated brake system of a vehicle having brake slip control, by which the brake pressure in pressure-medium-operated brake actuators is adaptively adjusted for a locking tendency of individual wheels of the vehicle. Two membranes of two membrane valves are clamped between two housing parts and an intermediate plate. Also described are a pressure-medium-operated brake system of a vehicle with brake-slip control, including at least one such ABS pressure control valve assembly, and to a method for producing such an ABS pressure control valve assembly.

A relay valve (1′) for a compressed-air system of a vehicle has a working pressure inlet, a working pressure outlet, a venting outlet and a controllable relay piston (19). The relay piston (19) is axially movably guided and, at one axial end, has an annular, radially inner valve seat (20). A sealing piston (9) is axially movably guided coaxially with respect to the relay piston (19). The sealing piston (9) is pushed by a compression spring (8) toward the relay piston (19) and an annular, radially outer valve seat (25), which is a part of a seat ring (24) fastened in an annular collar (23) of the housing bottom part (2). The seat ring (24) is a deep-drawn component shaped as a cylindrical pot of a metallic material. The radially outer valve seat (25) is an axially protruding annular web with a gable-shaped axial cross section.

A parking brake apparatus is provided for an autonomously drivable vehicle having components of a parking brake system for applying a parking brake. The parking brake apparatus comprises a first controller arranged to provide one or more control signals to be applied to components of the parking brake system to apply the parking brake in response to a signal requesting the parking brake to be applied. The parking brake apparatus also comprises a second controller arranged to provide one or more control signals to be applied to other components of the parking brake system to apply the parking brake in response to unavailability of the first controller to cause the parking brake to be applied.

A parking brake apparatus is provided for an autonomously drivable vehicle having components of a parking brake system for applying a parking brake. The parking brake apparatus comprises a first controller arranged to provide one or more control signals to be applied to components of the parking brake system to apply the parking brake in response to a signal requesting the parking brake to be applied. The parking brake apparatus also comprises a second controller arranged to provide one or more control signals to be applied to other components of the parking brake system to apply the parking brake in response to unavailability of the first controller to cause the parking brake to be applied.

A relay-valve (RV) device for commercial-vehicles, having: a relay-piston, in a housing, has a piston-pin (PP) extending in a longitudinal-direction (LD) from a piston-plate (PPL) and is movable in the LD in a PPL-guide, the PPL dividing a housing interior into a PP-side volume and a volume remote therefrom, a valve, which is actuated by the PP to introduce a fluid from a supply-pressure-reservoir into the PP-side volume, and an intermediate-element (IE), arranged around the PP is movable relative thereto in the LD in an IE-guide and which divides the PP-side volume into a PPL-side volume and a volume remote therefrom and limits the flow-rate of the fluid to the PPL by at least one through-opening, in which the RV device has an IE-stop, which limits the movement of the IE in the direction of the PPL and against which the IE is bringable into sealing contact by the fluid-pressure.

A relay-valve (RV) device for commercial-vehicles, having: a relay-piston, in a housing, has a piston-pin (PP) extending in a longitudinal-direction (LD) from a piston-plate (PPL) and is movable in the LD in a PPL-guide, the PPL dividing a housing interior into a PP-side volume and a volume remote therefrom, a valve, which is actuated by the PP to introduce a fluid from a supply-pressure-reservoir into the PP-side volume, and an intermediate-element (IE), arranged around the PP is movable relative thereto in the LD in an IE-guide and which divides the PP-side volume into a PPL-side volume and a volume remote therefrom and limits the flow-rate of the fluid to the PPL by at least one through-opening, in which the RV device has an IE-stop, which limits the movement of the IE in the direction of the PPL and against which the IE is bringable into sealing contact by the fluid-pressure.

A parking brake apparatus is provided for an autonomously drivable vehicle having components of a parking brake system for applying a parking brake. The parking brake apparatus comprises a first controller arranged to provide one or more control signals to be applied to components of the parking brake system to apply the parking brake in response to a signal requesting the parking brake to be applied. The parking brake apparatus also comprises a second controller arranged to provide one or more control signals to be applied to other components of the parking brake system to apply the parking brake in response to unavailability of the first controller to cause the parking brake to be applied.