Vehicle air suspension system with accurate side to side levelin

Details Vehicle air suspension system with accurate side to side levelin Vehicle air suspension system with accurate side to side levelin

1987-06-29

1989-05-09

Chin, Gary

Boots, shoes, and leggings

280707, 280840, B60G 1700

Patent

active

048294365

ABSTRACT:
A vehicle suspension system has at least one leveling device with a leveling sensor on each side of the vehicle. Leveling action is initiated when a sensor indicates height out of a dead band around the calibrated level for the sensor. Once initiated, leveling action occurs independently for all devices in closed loop to target levels, different for intake and exhaust, which allow overshoot to a common intermediate level, the intermediate level allowing settling to the calibrated level. Order of leveling is rear first with intake before exhaust and then front with exhaust before intake to prevent the rear from falling below the front. Leveling is prevented when the vehicle is not moving but has moved since the last opening of one or more selected vehicle doors.

REFERENCES:
patent: 4105216 (1978-08-01), Graham et al.
patent: 4453725 (1984-06-01), Kuwana et al.
patent: 4466625 (1987-08-01), Kondo et al.
patent: 4593920 (1986-06-01), Natsume et al.
patent: 4685689 (1987-08-01), Takizawa et al.

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