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Brake system of hybrid type vehicle having front and rear regeneration brakes of different efficiencies

  • US 6,406,105 B1
  • Filed: 10/02/2000
  • Issued: 06/18/2002
  • Est. Priority Date: 12/09/1999
  • Status: Expired due to Term
First Claim
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1. A brake system of a hybrid type vehicle having a pair of front wheels and a pair of rear wheels, comprising:

  • front regeneration brake means for selectively braking the front wheels with a regeneration of an electric energy from a kinetic energy of the vehicle at a first regeneration efficiency;

    rear regeneration brake means for selectively braking the rear wheels with a regeneration of an electric energy from the kinetic energy of the vehicle at a second regeneration efficiency different from the first regeneration efficiency;

    front friction brake means for selectively braking the front wheels;

    rear friction brake means for selectively braking the rear wheels; and

    control means for operating the front and rear regeneration brake means and the front and rear friction brake means such that, when the vehicle is braked at a controlled braking force, either of the front and rear regeneration brake means working at a higher regeneration efficiency than the other apply as much a braking force to the corresponding front or rear wheels as available thereby for the controlled braking force under a condition that a ratio of a braking force applied to the rear wheels to a braking force applied to the front wheels is not larger than a value predetermined therefor, with any remainder of the controlled braking force, being applied by at least one of the other of the front and rear regeneration brake means and the front and rear friction brake means.

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