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System and method of cylinder deactivation for optimal engine torque-speed map operation

  • US 8,886,422 B2
  • Filed: 02/28/2012
  • Issued: 11/11/2014
  • Est. Priority Date: 02/28/2011
  • Status: Expired due to Fees
First Claim
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1. A method for optimizing fuel consumption in a vehicle when changing from a current operating state to a target operating state, the method comprising:

  • receiving data indicative of a vehicle current operating state based on at least two of power demand, engine speed, engine torque, gear number, and vehicle speed;

    receiving terrain variation data;

    determining vehicle target operating state including desired torque based on said terrain variation data;

    determining an active cylinder distribution to minimize fuel consumption based on said determined vehicle target operating state; and

    providing a transmission gear shift recommendation in view of the determined active cylinder distribution and the vehicle target operating state.

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