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Valve control to reduce modal frequencies that may cause vibration

  • US 7,140,355 B2
  • Filed: 03/19/2004
  • Issued: 11/28/2006
  • Est. Priority Date: 03/19/2004
  • Status: Active Grant
First Claim
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1. A method for controlling at least a valve that may be deactivated to operate in at least a cylinder of an internal combustion engine, the method comprising:

  • operating at least a cylinder in said internal combustion engine;

    adjusting the number of valves that operate in a cycle of said cylinder based at least on an operating condition of at least a vehicle chassis system; and

    adjusting a damping ratio of at least an engine mount in response to operation of said valve.

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