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COORDINATION OF VARIABLE CAM TIMING AND VARIABLE DISPLACEMENT ENGINE SYSTEMS

  • US 20100211297A1
  • Filed: 02/17/2009
  • Published: 08/19/2010
  • Est. Priority Date: 02/17/2009
  • Status: Active Grant
First Claim
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1. A method of operating an internal combustion engine including a variable cam timing (VCT) mechanism in cooperation with a plurality of deactivatable cylinders, each cylinder with a plurality of cylinder valves, the method comprising,operating at a first cylinder valve timing before a transition of reactivating deactivated cylinders;

  • andbefore the transition, advancing cylinder valve timing from the first valve timing, where after the transition the cylinder valve timing remains at a second valve timing, the second valve timing advanced relative to the first valve timing.

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