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Predictive modeling and reducing cyclic variability in autoignition engines

United States Patent

August 30, 2016
View the Complete Patent at the US Patent & Trademark Office
Methods and systems are provided for controlling a vehicle engine to reduce cycle-to-cycle combustion variation. A predictive model is applied to predict cycle-to-cycle combustion behavior of an engine based on observed engine performance variables. Conditions are identified, based on the predicted cycle-to-cycle combustion behavior, that indicate high cycle-to-cycle combustion variation. Corrective measures are then applied to prevent the predicted high cycle-to-cycle combustion variation.
Hellstrom; Erik (Ann Arbor, MI), Stefanopoulou; Anna (Ann Arbor, MI), Jiang; Li (Ann Arbor, MI), Larimore; Jacob (Ann Arbor, MI)
Robert Bosch GmbH (Stuttgart, DE), The Regents of the University of Wisconsin (Ann Arbor, MI)
13/ 621,539
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.