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Dynamic estimator for determining operating conditions in an internal combustion engine

United States Patent

January 5, 2016
View the Complete Patent at the US Patent & Trademark Office
Methods and systems are provided for estimating engine performance information for a combustion cycle of an internal combustion engine. Estimated performance information for a previous combustion cycle is retrieved from memory. The estimated performance information includes an estimated value of at least one engine performance variable. Actuator settings applied to engine actuators are also received. The performance information for the current combustion cycle is then estimated based, at least in part, on the estimated performance information for the previous combustion cycle and the actuator settings applied during the previous combustion cycle. The estimated performance information for the current combustion cycle is then stored to the memory to be used in estimating performance information for a subsequent combustion cycle.
Hellstrom; Erik (Ann Arbor, MI), Stefanopoulou; Anna (Ann Arbor, MI), Jiang; Li (Ann Arbor, MI), Larimore; Jacob (Ann Arbor, MI)
13/ 621,527
September 17, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under grant No. DE-EE0003533 awarded by the Department of Energy. The Government has certain rights in this invention.