Integrated Emission Management strategy for cost-optimal engine-aftertreatment operation

R.P.M. Cloudt, F.P.T. Willems

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26 Citations (Scopus)
12 Downloads (Pure)

Abstract

A new cost-based control strategy is presented that optimizes engine-aftertreatment performance under all operating conditions. This Integrated Emission Management strategy minimizes fuel consumption within the set emission limits by on-line adjustment of air management based on the actual state of the exhaust gas aftertreatment system. Following a model-based approach, Integrated Emission Management offers a framework for future control strategy development.This approach alleviates calibration complexity, since it allows to make optimal trade-offs in an operational cost sense.The potential of the presented cost-optimal control strategy is demonstrated for a modern heavy-duty Euro VI engine. The studied diesel engine is equipped with cooled EGR, Variable Geometry Turbocharger, and a DPF-SCR aftertreatment system. A simulation study shows that the proposed Integrated Emission Management strategy accomplishes 2% to 3% reduction in fuel consumption and operating costs compared to a baseline strategy. Further potential benefits include reduced heat rejection associated with the EGR system and reduced DPF regeneration frequency.
Original languageEnglish
Article number2011-01-1310
Pages (from-to)1784-1797
Number of pages14
JournalSAE International Journal of Engines
Volume4
Issue number1
DOIs
Publication statusPublished - 2011

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