Vehicle central tire inflation system

Details Vehicle central tire inflation system Vehicle central tire inflation system

1993-04-16

1993-12-28

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Supply and exhaust type

137225, B60C 2310

Patent

active

052730646

ABSTRACT:
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 sensor (47), and a command/display console (48). The control circuit (40) includes valves (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 the wheels to the conduit assembly (74) to ensure closing of the valve device (100 ) when the conduit is vented.

REFERENCES:
patent: 4782879 (1988-11-01), Le Chatelier et al.
patent: 4922946 (1990-05-01), Boulicault

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