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Active vibratory noise control apparatus

  • US 20040258251A1
  • Filed: 06/15/2004
  • Published: 12/23/2004
  • Est. Priority Date: 06/17/2003
  • Status: Active Grant
First Claim
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1. An active vibratory noise control apparatus for reducing vibratory noise which is produced in the passenger compartment of a vehicle based on vibratory noise generated by a variable-cylinder internal combustion engine that can selectively be operated in a full-cylinder operation mode in which all of the cylinders are operated and a partial-cylinder operation mode in which some of the cylinders are out of operation, comprising:

  • partial-cylinder operation mode determining means for determining whether the variable-cylinder internal combustion engine is in the partial-cylinder operation mode or not; and

    switching control means for switching a process of reducing the vibratory noise in the passenger compartment into and out of operation depending on a determined result from said partial-cylinder operation mode determining means.

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