| 摘要 |
<p>A tire pressure control system (10) for wheels (28) of a vehicle. The system includes an air control circuit (40) having a positive pressure air source (42), a vacuum pressure air source (44), a central control unit (46), a vehicle speed se nsor (47), and a command/display console (48). The control circuit (40) includes valv es (62, 64, 66, 68, 70) and a conduit assembly (74) for controlling communication of the positive and vacuum pressure air to wheel valve assemblies (14) mounted on each wheel. A vent valve (86) provides quick venting of positive air pressure in the conduit assembly (74) for effecting rapid closing of a valve device (100) in each wheel valve (14). Each wheel valve also includes a valve device (104) providing substantially unrestricted air flow from the conduit assembly (74) to the wheels when valve device (100) is open and providing restricted air flow from th e wheels to the conduit assembly (74) to ensure closing of the valve device (100) when the conduit is vented.</p> |
