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System and method for determining relative vehicle mass

  • US 5,482,359 A
  • Filed: 04/22/1994
  • Issued: 01/09/1996
  • Est. Priority Date: 04/22/1994
  • Status: Expired due to Fees
First Claim
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1. For use with a vehicle including an electronic control unit with memory and a plurality of axles, each axle with an associated plurality of braking sites controlled by the electronic control unit, a system for determining a relative vehicle mass during a controlled braking maneuver for the purpose of braking control during subsequent braking maneuvers, the system comprising:

  • means for decelerating the vehicle at a predetermined rate during the controlled braking maneuver, the means for decelerating delivering a braking pressure to each of the braking sites on at least one of the axles;

    means for sampling the braking pressure delivered to the braking sites on the at least one of the axles to obtain at least one braking pressure signal;

    means for determining the vehicle mass relative to a previously determined vehicle mass based on the at least one braking pressure signal; and

    means for controlling vehicle braking during subsequent braking maneuvers based on the relative vehicle mass.

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