A brake cylinder for a vehicle brake includes a spring device having at least a first section for generating a braking force and/or a restoring force for releasing a brake in a stroke direction and having a basic extension extending essentially on a first section plane, a normal of the first section plane being aligned parallel to the stroke direction and/or deviating from the stroke direction by a maximum of 10, the first section having first subsections and second subsections along the basic extension, the first subsections spaced apart from the first section plane in the positive stroke direction in the unloaded state and the second subsections spaced from the first section plane in the negative stroke direction in the unloaded state, wherein the first and second subsections are at a smaller distance from the first section plane in the loaded state than in the unloaded state.

A brake cylinder for a vehicle brake includes a spring device having at least a first section for generating a braking force and/or a restoring force for releasing a brake in a stroke direction and having a basic extension extending essentially on a first section plane, a normal of the first section plane being aligned parallel to the stroke direction and/or deviating from the stroke direction by a maximum of 10, the first section having first subsections and second subsections along the basic extension, the first subsections spaced apart from the first section plane in the positive stroke direction in the unloaded state and the second subsections spaced from the first section plane in the negative stroke direction in the unloaded state, wherein the first and second subsections are at a smaller distance from the first section plane in the loaded state than in the unloaded state.

A trailer air supply and control module for a electronic brake system of a motor vehicle with a trailer interface, and a brake system of a motor vehicle with a trailer interface comprising the trailer air supply and control module, includes at least two electrical terminals configured to receive two independent but redundant electrical control input signals which comprise a signal for a preset brake control outlet pressure. At least one valve is configured to adjust a constant air pressure from an air pressure source to the preset brake outlet pressure. One pneumatic outlet terminal is configured to provide the preset brake supply outlet pressure to the pneumatic brake system of the trailer, and one pneumatic outlet terminal is configured to provide the preset brake control outlet pressure to the pneumatic brake system of the trailer.

A trailer air supply and control module for a electronic brake system of a motor vehicle with a trailer interface, and a brake system of a motor vehicle with a trailer interface comprising the trailer air supply and control module, includes at least two electrical terminals configured to receive two independent but redundant electrical control input signals which comprise a signal for a preset brake control outlet pressure. At least one valve is configured to adjust a constant air pressure from an air pressure source to the preset brake outlet pressure. One pneumatic outlet terminal is configured to provide the preset brake supply outlet pressure to the pneumatic brake system of the trailer, and one pneumatic outlet terminal is configured to provide the preset brake control outlet pressure to the pneumatic brake system of the trailer.