System and method for optimally controlling damping force characteristics of front and rear suspension units of four-wheeled vehicle
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United States of America Patent
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-
Nov 15, 1994
Grant Date -
N/A
app pub date -
Nov 27, 1991
filing date -
Nov 30, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A controller of each suspension unit is provided with a time difference setting block for deriving a time difference between a time at which front wheels have passed over a given portion of road surface and a time at which rear wheels have passed on the same portion of road surface, a correction block for deriving a correction value corresponding to a difference between a required optimum damping force on each of the front wheel suspension units and actually generated damping force on each of the front wheel suspension units, and a rear wheel suspension controlling block for deriving an optimum damping force on the basis of a presently input signal derived from a vehicular behavior detector installed on a rear wheel side and the correction value past by the time difference and outputting a change control signal to the damping force coefficient changing mechanism installed for the rear wheel suspension units.
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