Electropneumatic equipment for a vehicle with an autonomous brake circuit supplied with backup pressure as a precaution

A vehicle having a prime mover operable by an ignition or start signal, comprising:

• an electropneumatic equipment, including an electropneumatic service brake device, wherein the electropneumatic service brake device includes:
• a) pneumatic wheel brake actuators,
• b) at least one electric service brake circuit,
• c) at least one pneumatic service brake circuit,
• d) an at least electric service brake input device, which generates an electric actuation signal within the at least one electric service brake circuit,
• e) within the electric service brake circuit, a primary electronic brake control device which generates a first electric braking request signal representing a target brake pressure in dependence on the electric actuation signal,
• f) a secondary electronic brake control device which controls at least one electrically actuated actuator by means of a second electric braking request signal, which actuator is configured to generate at least one pneumatic brake control pressure based on the second electric braking request signal,
• g) at least one electropneumatic pressure control module with an integrated electronic control unit as a component of the at least one electric service brake circuit, the pressure control module including at least one pneumatic control input, wherein the at least one electropneumatic pressure control module is configured
• g1) to receive the first electric braking request signal at an electric control input of the pressure control module and to generate an electronically controlled brake pressure for the wheel brake actuators within the at least one electric service brake circuit in dependence on the first electric braking request signal, and
• g2) to receive the at least one pneumatic brake control pressure at the at least one pneumatic control input of the pressure control module and to generate a brake pressure for the wheel brake actuators depending on the at least one pneumatic brake control pressure within the at least one pneumatic service brake circuit, and
• g3) to feed the brake pressure into the pneumatic wheel brake actuators, and
• g4) which comprises at least one electromagnetic backup valve which is connected to the at least one pneumatic control input and which is configured and controlled such that it
• g4a) retains the at least one pneumatic brake control pressure when the at least one electric service brake circuit is intact or sufficiently energized, but
• g4b) otherwise, if the at least one electric service brake circuit has a defect or is insufficiently energized, allows the at least one pneumatic brake control pressure to pass through so that the at least one pressure control module can generate the brake pressure in dependence on the at least one pneumatic brake control pressure, wherein
• h) the at least one electrically actuated actuator is controlled by the secondary electronic brake control device in dependence on an assistance braking request signal automatically generated by a driver assistance system and/or in dependence on the electric actuation signal so that, irrespective of a defect in the electric service brake circuit, the at least one pneumatic brake control pressure is generated by the electrically actuated actuator in response to the assistance braking request signal and/or in response to the brake actuation signal, and is fed into the at least one pneumatic control input of the at least one pressure control module, and/or in that
• i) the at least one electrically actuated actuator is controlled by the secondary electronic brake control device so that the at least one pneumatic brake control pressure is generated by the at least one electrically actuated actuator independently of a generation of the ignition or start signal for the prime mover of the vehicle and is fed into the at least one pneumatic control input of the at least one pressure control module.