Land vehicles – Wheeled – Running gear
Patent
1993-01-11
1994-12-20
Tyson, Karin L.
Land vehicles
Wheeled
Running gear
280714, 267 6417, 267 6427, 267 6428, 267123, B60G 1130
Patent
active
053740777
ABSTRACT:
A pneumatically damped vehicle suspension system. The suspension system provides damping which is load-dependent, i.e., the amount of damping varies in approximate proportion to the load supported by the suspension system, thereby maintaining a nearly constant fraction of critical damping over the normal range of operating loads. The damping provided by the system is also frequency-dependent, a characteristic not achievable with hydraulic dampers. Two independent damping circuits provide maximum damping at the suspension's two resonant frequencies, or modes of vibration--the bounce mode and the axlehop mode. Relatively little damping is provided at other frequencies, resulting in improved isolation of road inputs.
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Penzotti Roger P.
Stephens Donald L.
Paccar Inc.
Tyson Karin L.
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