Authors
J.B. Green Jr., R.M. Wagner, C.S. Daw
Publication
Proceedings: Technical Meeting of the Central States Section of the
Combustion Institute, Knoxville, TN, April 2002
Abstract
We are investigating predictive feedback control of spark-ignition
engines based on symbolization and map reconstruction of patterns in
cycle-by-cycle engine measurements. Symbolization converts combustion
quality measurements into a small set of discrete values that can be
efficiently analyzed in real time for predictable patterns. An
important advantage of symbolization is that it works well for
measurements of low precision, such as engine speed variations. Map
reconstruction is another technique that can be used when the observed
patterns are relatively low dimensional. A low-order map is produced
that provides explicit predictions of future combustion events. These
types of algorithms can be useful for controlling both steady state and
transient cyclic dispersion of lean combustion.
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