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Device for controlling suspension shock absorbers of vehicles based upon phantom substitute therefor

  • US 6,298,294 B1
  • Filed: 06/14/2000
  • Issued: 10/02/2001
  • Est. Priority Date: 06/22/1999
  • Status: Expired due to Fees
First Claim
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1. A device for controlling damping coefficients of shock absorbers of a four wheeled vehicle having a vehicle body, front left, front right, rear left and rear right wheels each supporting the vehicle body at a corresponding portion thereof, and the shock absorbers each acting between each of the wheels and the corresponding portion of the vehicle body, comprising:

  • means for constructing a phantom damping system composed of a phantom side shock absorber disposed vertically at a lateral inside of a turn running of the vehicle to have a lower end movable along a ground surface together with the vehicle and an upper end vertically movable relative to the lower end with a first phantom damping coefficient therebetween, and a phantom angular shock absorber arranged to act between the upper end of the phantom side shock absorber and the vehicle body with a second phantom damping coefficient therebetween, such that the phantom damping system provides the vehicle body with a substantially same phantom vertical damping force against a vertical movement of the vehicle body and a substantially same phantom angular damping moment against a rolling angular movement of the vehicle body as the shock absorbers acting between the wheels and the corresponding portions of the vehicle during a rolling of the vehicle body due to the turn running of the vehicle;

    means for calculating values of at least the first and second phantom damping coefficients for obtaining an optimum rolling performance of the vehicle body by the phantom damping system during the turn running of the vehicle; and

    means for controlling the damping coefficients of the shock absorbers acting between the wheels and the corresponding portions of the vehicle body based upon the calculated values of the first and second phantom damping coefficients.

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