Print Email Facebook Twitter Experimental demonstration of a new model-based SCR control strategy for cleaner heavy-duty diesel engines Title Experimental demonstration of a new model-based SCR control strategy for cleaner heavy-duty diesel engines Author Willems, F.P.T. Cloudt, R.P.M. Publication year 2011 Abstract Selective catalytic reduction (SCR) is a promising diesel aftertreatment technology that enables low nitrogen oxides (NOx) tailpipe emissions with relatively low fuel consumption. Future emission legislation is pushing the boundaries for SCR control systems to achieve high NOx conversion within a tailpipe ammonia (NH3) slip constraint, and to provide robustness to meet in-use compliance requirements. This work presents a new adaptive control strategy that uses an ammonia feedback sensor and an online ammonia storage model. Experimental validation on a 12-liter heavy-duty diesel engine with a 34-liter Zeolite SCR catalyst shows good performance and robustness against urea under- and over-dosage for both the European steady-state and transient test cycles. The new strategy is compared with a NOx sensor-based control strategy with cross-sensitivity compensation. It proved to be superior in terms of transient adaptation and taking an NH3 slip constraint into account. © 2006 IEEE. Subject Fluid Mechanics Chemistry & EnergeticsPT - Power TrainsTS - Technical SciencesTrafficAdaptive controldiesel enginesemission controlmodel-based controlrobustnessAdaptive ControlAdaptive control strategyControl strategiesCross sensitivityDiesel aftertreatmentEmission legislationExperimental validationsFeed-back sensorsHeavy-duty diesel engineLow fuel consumptionModel-based controlNew strategySCR catalystsSensor-based controlStorage modelTailpipe emissionTransient testsAdaptive control systemsAir pollution controlAmmoniaCatalystsEmission controlNitric oxideNitrogen oxidesRobust controlRobustness (control systems)Selective catalytic reductionSensorsUreaDiesel engines To reference this document use: http://resolver.tudelft.nl/uuid:880d1f96-6cfb-4b15-96e3-f2eb23649769 TNO identifier 436005 ISSN 1063-6536 Source IEEE Transactions on Control Systems Technology, 19 (5), 1305-1313 Article number No.: 5565519 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.