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ADAPTIVE EGR CONTROL FOR INTERNAL COMBUSTION ENGINES

  • US 20110023847A1
  • Filed: 07/31/2009
  • Published: 02/03/2011
  • Est. Priority Date: 07/31/2009
  • Status: Active Grant
First Claim
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1. A method for controlling an internal combustion engine having an EGR valve, the method comprising:

  • determining a base valve position to deliver a target EGR flow for current operating conditions using a stored map; and

    adjusting the base valve position in response to differential pressure across an orifice in the EGR flow to move the valve to a position different from the base position to provide the target flow.

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