Motor vehicle level control circuit

Details Motor vehicle level control circuit Motor vehicle level control circuit

1978-03-24

1979-09-25

Peters, Jr., Joseph F.

Land vehicles

Body elevation or tilt

Establishing riding or trim height

267 65D, 280707, B60G 1700

Patent

active

041688406

ABSTRACT:
An optical switching arrangement including at least one light source connected in a cyclically completed and interrupted electrical energizing circuit and a pair of photosensitive signal generating devices optically coupled thereto through a shuttering arrangement operated by the sprung mass of a motor vehicle produces, when the sprung mass is above and below a predetermined trim band, respective first and second logic signal pairs, each of which is stored until the next different pair is produced. Electrical circuitry responsive to these logic signal pairs produces respective sprung mass high and low signals to which a leveling system is responsive to level the sprung mass within the predetermined trim band. Respective accumulator circuits accumulate the time each of the sprung mass high and low signals is present to effect the inhibiting of the production of each of these signals at the conclusion of a respective predetermined period of time and each is reset to zero upon each occurrence of the opposite one of these signals.

REFERENCES:
patent: 3584893 (1971-06-01), Tuczek
patent: 4017099 (1977-04-01), Hegel
Society of Automotive Engineers 770396, "Electronic Sensing for Vehicle Height Control", by R. Hegel, M. Bethell, and R. Sorensen, Feb. 28-Mar. 4, 1977.

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