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Predictive modeling and reducing cyclic variability in autoignition engines

  • US 9,429,096 B2
  • Filed: 09/17/2012
  • Issued: 08/30/2016
  • Est. Priority Date: 09/15/2011
  • Status: Active Grant
First Claim
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1. A method of controlling a vehicle engine to reduce cycle-to-cycle combustion variation, the method comprising:

  • applying a predictive model to predict cycle-to-cycle combustion behaviour of an engine based on observed engine performance variables;

    identifying conditions that indicate high cycle-to-cycle combustion variation based on the predicted cycle-to-cycle combustion behaviour; and

    applying corrective measures to prevent the predicted high cycle-to-cycle combustion variation,wherein applying a predictive model to predict cycle-to-cycle combustion behaviour of an engine includes;

    applying a predictive model based on temperature of an engine cylinder and a cylinder charge composition at the end of a combustion cycle.

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