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Engine air-fuel control for an engine with valves that may be deactivated

  • US 7,032,581 B2
  • Filed: 03/19/2004
  • Issued: 04/25/2006
  • Est. Priority Date: 03/19/2004
  • Status: Active Grant
First Claim
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1. A method control air-fuel ratios in individual cylinders of an internal combustion engine with electrically actuated valves, where each electrically actuated intake or exhaust valve is actuated directly by an electromagnetic actuator, the method comprising:

  • operating at least an electrically actuated intake or exhaust valve in each cylinder combusting an air-fuel mixture during a cycle of said engine; and

    correcting an air and fuel mixture supplied to each cylinder combusting an air-fuel mixture by adjusting electrically actuated valve timing for said each cylinder based on a desired air-fuel mixture in said each cylinder combusting an air-fuel mixture.

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