Diesel engine NOx emission modeling with airpath input channels
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Boz, Talha and Ünel, Mustafa and Aran, Volkan and Yılmaz, Metin and Gürel, Çetin and Bayburtlu, Caner and Köprübaşı, Kerem (2015) Diesel engine NOx emission modeling with airpath input channels. In: 41st Annual Conference of the IEEE Industrial Electronics Society (IECON 2015), Yokohama, Japan
Stringent international regulations in terms of emissions necessitate more efficient transient calibration procedures for diesel engines which in turn implies utilization of dynamic models of the combustion process. In this paper, a novel input design framework in terms of multi-sweep chirp signals is developed and airpath input channels are excited by designed chirp signals. Linear and nonlinear system identification methods are utilized to model NOx emissions with airpath input channels. Experimental results show that while linear identification techniques provide poor performance in terms of training and validation fits, nonlinear models achieve remarkable performance in training and validation fits.
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