This paper proposes a gain-scheduling (GS) control strategy for selective catalytic reduction (SCR) systems in diesel engines, to minimize both nitrogen oxides (NOx) emissions and ammonia (NH3) slip downstream of the SCR catalyst. The proposed GS controller switches among multiple linear time-invariant H controllers based on the engine’s operating condition, and adopts three measurable GS parameters, that is, the amount of NOx entering the SCR catalyst, exhaust gas temperature in the catalyst, and ammonia slip measurement. While switching surfaces for the first two GS parameters are determined by simply dividing their operating ranges, to find optimal switching surfaces for the ammonia slip GS parameter, a novel method called Violation-Time-based Decision method is proposed. The efficiency of the proposed GS SCR controller is validated in simulations using real experimental data obtained from a diesel engine in the Non-Road-Transient Cycle (NRTC).


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Gain-scheduling Selective Catalytic Reduction Control in Diesel Engines with Switched H Controllers


    Additional title:

    Int.J Automot. Technol.


    Contributors:

    Published in:

    Publication date :

    2023-02-01


    Size :

    9 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Selective catalytic reduction for diesel engines

    Bickerstaffe,S. / Tenneco Automotive,US | Automotive engineering | 2011


    Selective catalytic reduction on marine diesel engines.

    Gibson,J. / Groene,O. | Automotive engineering | 1991


    Selective Non-Catalytic NOx-Reduction in Diesel Engines Using Aqueous Urea

    Raab, A. / Enderle, C. / Schmitt, F. et al. | SAE Technical Papers | 1998


    Selective non-catalytic NOx-reduction in Diesel engines using aqeous urea

    Willand,J. / Teigeler,M. / Wirbeleit,F. et al. | Automotive engineering | 1998