Speed dependent control for dual air spring configuration

Details Speed dependent control for dual air spring configuration Speed dependent control for dual air spring configuration

2009-03-11

2010-10-19

Dickson, Paul N (Department: 3616)

Land vehicles

Suspension modification enacted during travel

Suspension stiffness for ride comfort

C280S124116

Reexamination Certificate

active

07815199

ABSTRACT:
An air suspension system is configured to maintain a desired vehicle comfort ride level as a function of vehicle speed. The air suspension system includes a plurality of air spring assemblies that each include a piston airbag and a primary airbag mounted around the piston airbag. A first set of the air spring assemblies is tuned to a first ride rate and a second set of the air spring assemblies is tuned to a second ride rate. Pressure is continuously varied within the first and second sets of air springs to maintain a first predetermined ride rate difference between the first ride rate and the second ride rate under a low vehicle speed condition and to maintain a second predetermined ride rate difference between the first ride rate and the second ride rate under a high vehicle speed condition.

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European Search Report dated Jul. 2nd, 2010.

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