Electro-Pneumatic Structural Unit and Electro-Pneumatic Brake Device With Double Redundancy and Brake Slip Control

An electro-pneumatic structural unit (GSAT) configured to control an electro-pneumatic brake device (1) in at least two redundancies, a first redundancy and a second redundancy, for an electro-pneumatic service brake device (EBS) of the electro-pneumatic brake device (1) of a motor vehicle designed to tow a trailer, when normal operation of the electro-pneumatic service brake device, in which a primary service brake pressure is generated by the electro-pneumatic service brake device, is not possible, the electro-pneumatic structural unit comprising:

• a) a first electrical structural unit input connection (19) for introducing an electrical service brake request signal;
• b) a first pneumatic structural unit output connection (51, 52) for outputting a pneumatic redundancy service brake pressure to a pneumatic service brake cylinder (48, 50);
• c) a second pneumatic structural unit output connection (28.1, 28.2, 28.3) for outputting a pneumatic brake pressure to a pneumatic spring-loaded brake cylinder (94);
• d) an integrated electronic control unit (31) controlled by the electrical service brake request signal introduced at the first electrical structural unit input connection (19);
• e) a first structural unit device (96) which is controlled by the integrated electronic control unit (31), the first structural unit device comprising a solenoid valve and being connected to the first pneumatic structural unit output connection (51, 52);
• f) a second structural unit device (66) which is controlled by the integrated electronic control unit (31), the second structural unit device comprising a solenoid valve and being connected to the second structural unit output connection (28.1, 28.2, 28.3),
• g) wherein the integrated electronic control unit (31) is configured to:
• g1) control the first structural unit device (96) within the scope of the first redundancy, when normal operation of the electro-pneumatic service brake device is not possible or is disrupted, on the basis of the electrical service brake request signal introduced at the first electrical structural unit input connection (19) such that the redundancy service brake pressure is output at the first structural unit output connection (51, 52) in order to engage the service brake cylinder (48, 50), and
• g2) control the second structural unit device (66) within the scope of the second redundancy, when normal operation of the electro-pneumatic service brake device is not possible and the first redundancy has also failed, on the basis of the electrical service brake request signal introduced at the first electrical structural unit input connection (19) such that the pneumatic brake pressure is output at the second structural unit output connection (28.1,