Land vehicles – Body elevation or tilt – Establishing riding or trim height
Patent
1984-04-19
1985-09-10
Bertsch, Richard A.
Land vehicles
Body elevation or tilt
Establishing riding or trim height
267 6416, 280707, B60G 1704
Patent
active
045401888
ABSTRACT:
A level control system for a wheeled motor vehicle with sprung and unsprung masses, an accessory the activation of which indicates the probability of an associated vehicle load change, fluid power apparatus activatable to level the sprung mass relative to the unsprung mass and sensor apparatus effective to periodically indicate a trim or out-of-trim level condition according to predetermined criteria further comprises apparatus defining a service mode with a time period shorter than a predetermined activation time of the fluid power apparatus which avoids overshoot in level adjustment, a cruise mode with a time period longer than the out-of-trim duration of a predetermined long highway feature and a decision mode with a time period of duration intermediate the service and cruise time period durations and longer than the period of sprung mass oscillation during vehicle movement. It further comprises logic control apparatus effective to select from the service, cruise and decision time modes for the determination of trim level condition based on the previous mode, the trim level determination in the previous period and detection of an actuation of the accessory, with the decision mode being selected upon the initiation of system operation and as an intermediate step between service and cruise modes.
REFERENCES:
patent: 3632131 (1972-01-01), Engfer
patent: 3633935 (1972-01-01), Boyer
patent: 3857580 (1974-12-01), Keijzer
patent: 3873123 (1975-03-01), Joneleit
patent: 4017099 (1977-04-01), Hegel et al.
patent: 4105216 (1978-08-01), Graham et al.
patent: 4162083 (1979-07-01), Zabler et al.
patent: 4164664 (1979-08-01), Kasiewicz
patent: 4168840 (1979-09-01), Graham
patent: 4185845 (1980-01-01), Misch et al.
patent: 4354693 (1982-10-01), Maeda et al.
patent: 4361346 (1982-11-01), Harris
patent: 4364574 (1982-12-01), Saito
patent: 4391452 (1983-07-01), Ohmori
patent: 4396202 (1983-08-01), Kami et al.
patent: 4401310 (1983-08-01), Ishikawa et al.
Libkie Herbert A.
McLeish James G.
Meloche Kenneth R.
Bertsch Richard A.
General Motors Corporation
Sigler Robert M.
LandOfFree
Automatic vehicle level control does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic vehicle level control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic vehicle level control will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1424741