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Apparatus and method for a torque and fuel control system for a hybrid vehicle

  • US 6,307,277 B1
  • Filed: 04/18/2000
  • Issued: 10/23/2001
  • Est. Priority Date: 04/18/2000
  • Status: Expired due to Term
First Claim
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1. A method for controlling a hybrid vehicle drive comprising an internal combustion engine and an electric motor generator connected to a crankshaft of the internal combustion engine by a direct drive belt and wherein the electric motor is utilized to charge batteries during vehicle deceleration/coasting operation and during regular cruising if battery charge is low comprising the steps of:

  • a) monitoring a vehicle speed;

    b) providing a brake pedal and a brake switch responsive to a brake pedal pressure and position for producing input signals;

    c) determining a gas pedal operation;

    if the gas pedal is depressed, maintain a fuel flow to the internal combustion engine;

    if the vehicle is stopped with the fuel flow off, releasing a brake to produce a brake position signal and operating the electric motor in accordance with the brake position signal to electrically turn the internal combustion engine to increase the vehicle speed to a predetermined creep speed; and

    d) providing the fuel flow and a spark to the internal combustion engine when a predetermined engine speed and a predetermined vehicle speed are reached.

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