Two-channel electronic brake system, commercial vehicle, and method for redundant supply of brake pressure

Abstract

A brake system for commercial vehicles is disclosed. The commercial vehicle comprises a front axle (10) controlled by a first brake circuit and at least one rear axle (20) controlled by a second brake circuit. The brake system comprises a foot brake module, FBM, (100) and a two-channel electro-pneumatic module, 2C EPM, (200). The FBM (100) comprises a first pneumatic output port (110) for a first brake circuit, and a second pneumatic output port (120) for the second brake circuit, a driver interface (130) as first input, and a pneumatic control port (140) as a second input. The FBM (100) is configured to generate a first control pressure (101) for the front axle (10) and a second control pressure (102) for the rear axle (20). The generated first control pressure (101) and / or the second control pressure (102) are controllable by the driver interface (130) and by the pneumatic control port (140). The 2C EPM (200) comprises a first channel port (210), a second channel port (220), and a pneumatic input port (230). The first channel port (210) is configured to provide a first channel output (201) for the rear axle (20). The second channel port (220) is configured to provide a second channel output (202) to the pneumatic control port (140) of the FBM (100). The pneumatic input port (230) is configured to receive second control pressure (102) from the FBM (100) and is fluidly connectable to the first channel port (210) and fluidly disconnected from the second channel port (220).

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