Spring devices – Vehicle – Comprising compressible fluid
Patent
1986-11-26
1989-03-07
Kashnikow, Andres
Spring devices
Vehicle
Comprising compressible fluid
280 61, 280702, 280704, 280707, 280711, 280712, 280714, 280840, B60G 1126, F16F 500
Patent
active
048099570
ABSTRACT:
A level control system for motor vehicles having pneumatic springs which function in accordance with the vehicle load. A specified distance is normally maintained between the vehicle body the vehicle axle. This distance is maintained by charging or discharging the pneumatic springs. The level control system includes an air dryer and a pneumatic relay type of controllable discharge valve having a relatively large cross-sectional port by which the air dryer is connected to the atmosphere. The discharge valve operates against a spring return force. The magnitude of the spring return force corresponds to a preselected minimum pneumatic spring pressure. The system counteracts an icing action of the discharge valve and prevents an unintentional and complete discharging of the pneumatic springs.
REFERENCES:
patent: 4327936 (1982-05-01), Sekiguchi
patent: 4354693 (1982-10-01), Maeda
patent: 4393959 (1983-07-01), Acker
patent: 4462610 (1984-07-01), Saito et al.
patent: 4465297 (1984-08-01), Yamahara
patent: 4504081 (1985-03-01), Shimizu et al.
patent: 4568093 (1986-02-01), Shimizu et al.
Kaltenthaler Wolfgang
Meyer Volker
Schonfeld Karl-Heinrich
Vanselow Jorg
Kashnikow Andres
Le Mark T.
Sotak J. B.
Wabco Westinghouse Fahrzeugbremsen GmbH
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