Land vehicles – Body elevation or tilt – Establishing riding or trim height
Patent
1984-04-19
1986-02-04
Peters, Jr., Joseph F.
Land vehicles
Body elevation or tilt
Establishing riding or trim height
280707, 280DIG1, 340 52R, B60G 1700
Patent
active
045680965
ABSTRACT:
A level control system for a motor vehicle with an unsprung mass including a wheel, a sprung mass, and a shock absorber connecting the sprung and unsprung masses comprises fluid power apparatus activatable to level the sprung mass with respect to the unsprung mass, a sensor effective to generate a signal indicating the level of the sprung mass relative to the unsprung mass and apparatus responsive to the sensor to compute the difference between the total times, within a predetermined time period, spent by the level above and below a predetermined trim band and apparatus effective to compare the difference of the times with a reference comprising a predetermined percentage of the predetermined time period and activate the fluid power apparatus if the difference exceeds the reference in magnitude, whereby the system can maintain a narrow trim band while the vehicle is not moving while avoiding unnecessary corrections and cycling due to excursions above and below the trim band during vehicle movement over rough surfaces.
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Finn Bernard J.
Libkie Herbert A.
McLeish James G.
Meloche Kenneth R.
Yew Ming-Chih
General Motors Corporation
Peters Jr. Joseph F.
Rice Kenneth R.
Sigler R. M.
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