Level control arrangement for vehicles having air springs

Details Level control arrangement for vehicles having air springs Level control arrangement for vehicles having air springs

1998-10-09

2000-09-12

Oberleitner, Robert J.

Spring devices

Vehicle

Comprising compressible fluid

28012416, F16F 943, B60G 1126

Patent

active

061165867

ABSTRACT:
The invention relates to a level control arrangement for a vehicle having air springs (8) via which the chassis of the vehicle is suspended relative to at least one vehicle axle. A pneumatically-controllable directional-control valve (18) is arranged between the compressor (4) and the air dryer (6) and the directional-control valve (18) has two control inputs (20 and 22). In the base state of the level control arrangement, the compressor (4) is connected via the pneumatically-controllable directional-control valve (18) to the air dryer (6). When the control line (26) of the first control input (20) is connected via a controllable directional-control valve (30) to the atmosphere, the pneumatically-controllable directional-control valve 18 transfers into the other switching state and the air spring (8) can be vented via the air dryer (6). The pneumatically-controllable directional-control valve (18) permits large flow cross sections to be switched so that the air dryer (6) can be rapidly vented when venting the air spring (8) and a regeneration of the air dryer (6) is then possible in an especially advantageous manner.

REFERENCES:
patent: 4465297 (1984-08-01), Yamahara
patent: 4826141 (1989-05-01), Buma et al.
patent: 5176404 (1993-01-01), Sulzyc
patent: 5452919 (1995-09-01), Hoyle et al.
patent: 5466007 (1995-11-01), Smith
patent: 5484162 (1996-01-01), Kanoh et al.
patent: 5669418 (1997-09-01), Wode
patent: 5794924 (1998-08-01), Stolpp

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