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Systems and Methods to Control Torsional Vibration in an Internal Combustion Engine with Cylinder Deactivation

  • US 20090007877A1
  • Filed: 07/05/2007
  • Published: 01/08/2009
  • Est. Priority Date: 07/05/2007
  • Status: Abandoned Application
First Claim
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1. A method to control torsional vibrations due to cylinder deactivation, comprising:

  • measuring gas pressure in an active and a deactivated cylinder;

    determining a target pressure for the deactivated cylinder responsive to the measured gas pressure in the active cylinder; and

    adjusting a phase on a pressure control valve of the deactivated cylinder responsive to a difference between the measured gas pressure in the deactivated cylinder and the determined target pressure for the deactivated cylinder.

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