Electropneumatic control module

An electronically controllable pneumatic brake system for a vehicle including a utility vehicle, the electronically controllable pneumatic brake system comprising:

• a front axle brake circuit for a front axle (VA) of the vehicle;
• said front axle brake circuit including a front axle modulator and front axle service brake cylinders;
• a rear axle brake circuit for at least one rear axle (HA) of the vehicle;
• said rear axle brake circuit including a rear axle modulator and rear axle service brake cylinders;
• a trailer brake circuit;
• a central control unit configured to provide at least one control signal (S1.1, S1.2) to at least one of said rear axle modulator and said front axle modulator;
• and,
• an electropneumatic control module including:
• a pneumatic supply port connectable to a compressed air supply for receiving a supply pressure (pV);
• a trailer control unit (TCV) including a trailer control valve unit having at least one electropneumatic valve, a trailer brake pressure port and a trailer feed pressure port;
• a holding brake unit (EPH) having a spring-type actuator port for at least one spring-type actuator and having a holding brake pilot control unit with at least one electropneumatic valve;
• a first vent;
• said holding brake pilot control unit having a first holding brake pilot control port connected to said first vent;
• said holding brake pilot control unit further having a second holding brake pilot control port;
• an electronic control unit (ECU) configured to cause said holding brake unit (EPH) to switch said holding brake pilot control unit into a ventilation position in response to receipt of an electronic holding signal (S2) and, in said ventilation position, said second holding brake pilot control port being connected in pressure-conducting manner to said first holding brake pilot control port and said spring-type actuator port being connectable to said first vent or a second vent;
• said holding brake unit (EPH) being connected in a pressure-conducting manner to a redundancy port and is configured to, in lieu of a connection of said spring-type actuator port to said first vent, output a first holding brake pressure (pF1) at said spring actuator port when said holding brake pilot control unit is in said ventilation position and a redundancy pressure (pR) is provided at said redundancy port;
• and,
• said trailer control unit (TCV) being configured to output a brake pressure (pB) at said trailer brake pressure port when said redundancy pressure (pR) is provided at said redundancy port.

A vehicle including a utility vehicle, the vehicle comprising:

• an electronically controllable pneumatic brake system including:
• a front axle brake circuit for a front axle (VA) of the vehicle;
• said front axle brake circuit including a front axle modulator and front axle service brake cylinders;
• a rear axle brake circuit for at least one rear axle (HA) of the vehicle;
• said rear axle brake circuit including a rear axle modulator and rear axle service brake cylinders;
• a trailer brake circuit;
• a central control unit configured to provide at least one control signal (S1.1, S1.2) to at least one of said rear axle modulator and said front axle modulator;
• and,
• an electropneumatic control module including:
• a pneumatic supply port connectable to a compressed air supply for receiving a supply pressure (pV);
• a trailer control unit (TCV) including a trailer control valve unit having at least one electropneumatic valve, a trailer brake pressure port and a trailer feed pressure port;
• a holding brake unit (EPH) having a spring-type actuator port for at least one spring-type actuator and having a holding brake pilot control unit with at least one electropneumatic valve;
• a first vent;
• said holding brake pilot control unit having a first holding brake pilot control port connected to said first vent;
• said holding brake pilot control unit further having a second holding brake pilot control port;
• an electronic control unit (ECU) configured to cause said holding brake unit (EPH) to switch said holding brake pilot control unit into a ventilation position in response to receipt of an electronic holding signal (S2) and, in said ventilation position, said second holding brake pilot control port being connected in pressure-conducting manner to said first holding brake pilot control port and said spring-type actuator port being connectable to said first vent or a second vent;
• said holding brake unit (EPH) being connected in a pressure-conducting manner to a redundancy port and is configured to, in lieu of a connection of said spring-type actuator port to said first vent, output a first holding brake pressure (pF1) at said spring actuator port when said holding brake pilot control unit is in said ventilation position and a redundancy pressure (pR) is provided at said redundancy port;
• and,
• said trailer control unit (TCV) being configured to output a brake pressure (pB) at said trailer brake pressure port when said redundancy pressure (pR) is provided at said redundancy port.