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System and method for torque based vehicle speed control

  • US 6,078,859 A
  • Filed: 08/04/1997
  • Issued: 06/20/2000
  • Est. Priority Date: 08/04/1997
  • Status: Expired due to Term
First Claim
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1. A cruise control system for a motor vehicle including an internal combustion engine, the system comprising:

  • a sensor for determining current vehicle speed;

    at least one input device for indicating a desired vehicle speed; and

    a controller in communication with the sensor and the input device, the controller determining a speed error based on the current vehicle speed and the desired vehicle speed, detecting a desired vehicle acceleration based on the speed error, determining an acceleration error based on the desired acceleration and current acceleration, determining wheel torque to be delivered to wheels of the vehicle based on one of the speed error and the acceleration error, and controlling torque generated by the engine to reduce one of the speed error and the acceleration error.

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