Land vehicles – Wheeled – Running gear
Patent
1986-05-23
1987-08-11
Reger, Duane A.
Land vehicles
Wheeled
Running gear
188299, B60G 1704
Patent
active
046856986
ABSTRACT:
Apparatus for controlling a vehicle suspension system includes acceleration sensors mounted on the vehicle for producing electrical signals representative of road surface undulations or irregularities, processing circuitry for processing the sensor signals to produce control signals, and a shock absorber or damper having adjustable damping characteristics. The damper preferably includes two chambers connected by a controllable bypass. One of the chambers becomes smaller during compression of the suspension system, and one becomes smaller during expansion. A controllable throttle and/or valve is provided in the bypass to adjust the damping characteristic of the absorber. The circuitry produces control signals H and w which are representative of the average height of the overall road surface undulations, and a ratio of average heights of long-wave and short-wave undulations, respectively. The circuitry further processes these signals to produce control signals F and P to control the bypass throttle and/or valve, respectively, in accordance with the following relationship:
REFERENCES:
patent: 4596320 (1986-06-01), Shimokura et al.
patent: 4600215 (1986-07-01), Kuroki et al.
patent: 4634142 (1987-01-01), Woods et al.
Klinkner Walter
Schmidt Fritz
Daimler-Benz Aktiengesellschaft
Reger Duane A.
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