Electromagnetic pressure control valve with internal compressed air routing

An electromagnetic pressure control valve for controlling an air pressure, comprising:

• (a) a housing having a compressed air supply connector for connection to a compressed air supply, a compressed air outlet connector for connection to a load, and a compressed air ventilating connector for ventilation;
• (b) an armature which, on its end sides which face away from one another, supports in each case one valve body, a first valve body and a second valve body, and which can be displaced within the housing by magnetic forces counter to a spring force of at least one first spring, so that it connects the compressed air outlet connector selectively to the compressed air supply connector or the compressed air ventilating connector;
• (c) a first valve seat connected to the compressed air supply connector;
• (d) a second valve seat connected to the compressed air ventilating connector;
• wherein:
• (e) the first valve body forms, together with a first valve seat, an inlet valve, and the second valve body forming, together with the second valve seat, an outlet valve, including:
• (f) a permanent axial compressed air connection through the first valve body, through the interior of the armature and through the second valve body, which compressed air connection includes at least one central axial through bore of the armature, at least one first axial through opening in the first valve body, and at least one second axial through opening in the second valve body,
• wherein:
• (g) the first valve body has a first radially inner portion which closes the first valve seat sealingly when the inlet valve is closed, and a first radially outer portion which has the at least one first axial through opening, and
• (h) the second valve body has a second radially inner portion which closes the second valve seat sealingly when the outlet valve is closed, and a second radially outer portion which has the at least one second axial through opening.

A pressure control valve apparatus for a compressed air-actuated vehicle brake system, comprising:

• a pressure control valve device configured so that it controls a brake pressure in a manner which is dependent on brake slip;
• at least one pneumatically pilot-controllable diaphragm valve
• at least one electromagnetic pressure control valve, for which the compressed air supply connector is connected to a device which generates the brake pressure, the compressed air outlet connector being connected to the at least one pneumatically pilot-controllable diaphragm valve for pilot-controlling the at least one diaphragm valve, and the compressed air ventilating connector being connected to a pressure sink;
• wherein the at least one electromagnetic pressure control valve includes:
• (a) a housing having a compressed air supply connector for connection to a compressed air supply, a compressed air outlet connector for connection to a load, and a compressed air ventilating connector for ventilation;
• (b) an armature which, on its end sides which face away from one another, supports in each case one valve body, a first valve body and a second valve body, and which can be displaced within the housing by magnetic forces counter to a spring force of at least one first spring, so that it connects the compressed air outlet connector selectively to the compressed air supply connector or the compressed air ventilating connector;
• (c) a first valve seat connected to the compressed air supply connector;
• (d) a second valve seat connected to the compressed air ventilating connector;
• wherein:
• (e) the first valve body forms, together with a first valve seat, an inlet valve, and the second valve body forming, together with the second valve seat, an outlet valve, including:
• (f) a permanent axial compressed air connection through the first valve body, through the interior of the armature and through the second valve body, which compressed air connection includes at least one central axial through bore of the armature, at least one first axial through opening in the first valve body, and at least one second axial through opening in the second valve body,
• wherein:
• (g) the first valve body has a first radially inner portion which closes the first valve seat sealingly when the inlet valve is closed, and a first radially outer portion which has the at least one first axial through opening, and
• (h) the second valve body has a second radially inner portion which closes the second valve seat sealingly when the outlet valve is closed, and a second radially outer portion which has the at least one second axial through opening.

A compressed air-actuated vehicle brake system, comprising:

• at least one pressure control valve device, which is configured so that it controls a brake pressure in a manner which is dependent on brake slip, including:
• at least one pneumatically pilot-controllable diaphragm valve;
• at least one electromagnetic pressure control valve, for which the compressed air supply connector is connected to a device which generates the brake pressure, the compressed air outlet connector being connected to the at least one pneumatically pilot-controllable diaphragm valve for pilot-controlling the at least one diaphragm valve, and the compressed air ventilating connector being connected to a pressure sink;
• wherein the at least one electromagnetic pressure control valve includes:
• (a) a housing having a compressed air supply connector for connection to a compressed air supply, a compressed air outlet connector for connection to a load, and a compressed air ventilating connector for ventilation;
• (b) an armature which, on its end sides which face away from one another, supports in each case one valve body, a first valve body and a second valve body, and which can be displaced within the housing by magnetic forces counter to a spring force of at least one first spring, so that it connects the compressed air outlet connector selectively to the compressed air supply connector or the compressed air ventilating connector;
• (c) a first valve seat connected to the compressed air supply connector;
• (d) a second valve seat connected to the compressed air ventilating connector;
• wherein:
• (e) the first valve body forms, together with a first valve seat, an inlet valve, and the second valve body forming, together with the second valve seat, an outlet valve, including:
• (f) a permanent axial compressed air connection through the first valve body, through the interior of the armature and through the second valve body, which compressed air connection includes at least one central axial through bore of the armature, at least one first axial through opening in the first valve body, and at least one second axial through opening in the second valve body,
• wherein:
• (g) the first valve body has a first radially inner portion which closes the first valve seat sealingly when the inlet valve is closed, and a first radially outer portion which has the at least one first axial through opening, and
• (h) the second valve body has a second radially inner portion which closes the second valve seat sealingly when the outlet valve is closed, and a second radially outer portion which has the at least one second axial through opening.