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HYBRID ELECTRIC VEHICLE WITH VARIABLE DISPLACEMENT ENGINE

  • US 20040106494A1
  • Filed: 12/09/2003
  • Published: 06/03/2004
  • Est. Priority Date: 04/11/2000
  • Status: Active Grant
First Claim
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1. A method for operating a vehicle having a variable displacement engine, a motor, and an electrical storage device operatively connected to the motor, the method comprising:

  • determining a demanded torque for the vehicle;

    comparing the demanded torque to a first torque threshold;

    partitioning the demanded torque into an engine torque and a motor torque based on the comparison of the demanded torque to the first torque threshold;

    comparing the demanded torque to a second torque threshold when the engine torque is non-zero; and

    determining a number of operating cylinders for the engine when the engine torque is non-zero, the number of operating cylinders being based on the comparison of the demanded torque to the second torque threshold.

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