초록 ▼

A trailer control valve having control pistons for actuating a double seat valve, which can control the communication between a compressed air reservoir, a compressed air consumer, and a pressure relief location. In order to structurally simplify the trailer control valve, a control piston is provid

A trailer control valve having control pistons for actuating a double seat valve, which can control the communication between a compressed air reservoir, a compressed air consumer, and a pressure relief location. In order to structurally simplify the trailer control valve, a control piston is provided that is jointly associated with an electrical control circuit and a pneumatic control circuit of a service brake system. Furthermore, a valve is provided that is connected to the pneumatic control circuit of the service brake system, which closes the pneumatic control circuit of the service brake off from to the trailer control valve when the electrical control circuit is functional, and in the event of a failure of the electrical control circuit, unblocks the pneumatic control circuit of the service brake system.

대표청구항 ▼

[What is claimed is:] [1.]a control piston (90), which is jointly associated with the electrical control circuit (25) and the pneumatic control circuit (26) of the service brake system (11), is provided in the trailer control valve (14),a valve (46) is provided, which is connected to the pneumatic c

[What is claimed is:] [1.]a control piston (90), which is jointly associated with the electrical control circuit (25) and the pneumatic control circuit (26) of the service brake system (11), is provided in the trailer control valve (14),a valve (46) is provided, which is connected to the pneumatic control circuit (26) of the service brake system (11) and closes off the pneumatic control circuit (26) of the service brake system (11) to the trailer control valve (14) when the electrical control circuit (25) is functional, and in the event of a failure of the electrical control circuit (25), said valve (46) unblocks the pneumatic control circuit (26) of the service brake system,as a part of the control module (13), the electrical control circuit (25) of the service brake system (11) is connected to an inlet valve (48) and an outlet valve (47), said inlet valve (48) and said outlet valve (47) are embodied as electromagnetically actuated 2/2-way valves that are closed when without current, the inlet valve (48) is connected to the second compressed air reservoir (36) of the auxiliary brake system (12) on an inflow side, and on an outflow side is connected to a control chamber (89) associated with the common control piston (90) of the trailer control valve (14), while the outlet valve (47) is connected to the control chamber (89) on an inflow side, and is connected to the pressure relief location (3) on an outflow side.