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System for vehicle height adjustment with loading deviation correction

  • US 4,821,191 A
  • Filed: 10/22/1986
  • Issued: 04/11/1989
  • Est. Priority Date: 10/22/1985
  • Status: Expired due to Fees
First Claim
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1. For a vehicle comprising a body and a plurality of wheels upon which said vehicle runs, a vehicle height adjustment system, comprising:

  • (a) a corresponding plurality of actuator assemblies, each corresponding to one of said vehicle wheels and resiliently suspending said one of said vehicle wheels from the vehicle body, each said actuator assembly comprising a pressure chamber and increasing and decreasing vehicle height at a location corresponding to each said vehicle wheel as a result of supply and discharge of working fluid to and from each said pressure chamber;

    (b) a corresponding plurality of working fluid supplying and discharging means, each corresponding to one of said actuator assemblies, for supplying and discharging working fluid to and from each pressure chamber;

    (c) a corresponding plurality of loading detection means, each corresponding to one of said vehicle wheels, for sensing each parameter representative of the loading imposed by the vehicle body on each corresponding one of said vehicle wheels;

    (d) a corresponding plurality of vehicle height detection means, each corresponding to one of said vehicle wheels, for sensing each parameter representative of the height of the vehicle body over each corresponding one of said vehicle wheels; and

    (e) a computing and control means for controlling said working fluid supplying and discharging means based on each deviation of each actual vehicle height as detected by each said vehicle height detection means from a standard vehicle height at each said vehicle wheel, and carrying out each control adjustment of each said actual vehicle height to each said standard vehicle height, while also carrying out a correction to the adjustment control of each said working fluid supplying and discharging means, based upon each deviation of each said actual wheel loading as detected by each said loading detection means from a standard wheel loading for each said vehicle wheel, by an amount substantially sufficient to eliminate each said loading deviation.

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