A brake pressure modulator (110, 110a, 110b, 110c, 106) includes: a relay valve (202); a first valve sub-unit (204) that receives a primary control pressure from primary source (II) intended for opening the relay valve (202); and a second valve unit (206) that receives a secondary control pressure from a secondary source (‘BST’) and at least part of the primary control pressure. The second valve unit (206) is a pneumatically controlled valve (206D, 206A, 206B, 206C) having a valve casing (304) including a pressurized guiding sleeve (304.4) providing a valve chamber (305) that axially guides a spool (320) adapted for mere pneumatic actuation, and a coil casing (304.5) providing a coil chamber (306) next to the pressurized guiding sleeve (304.4). The valve chamber (305) is free of a spring (321) and the coil chamber (306) is free of a solenoid (311), such that the spool (320) is actuable pneumatically only.
BRAKE PRESSURE MODULATOR, PNEUMATIC BRAKE SYSTEM AND VEHICLE
07.12.2023
Patent
Elektronische Ressource
Englisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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