Methodology for Analysing the NOx-NH3 Trade-off for the Heavy-duty Automotive SCR Catalyst

Andreas Åberg, Anders Widd, Jens Abildskov, Jakob Kjøbsted Huusom

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Abstract

This paper presents a methodology where pareto fronts were used to analyse how changes in the control structure for the urea dosing to the automotive SCR catalyst can improve the trade-o_ between NOx slip and NH3 slip. A previously developed simulation model was used to simulate the European Transient Cycle (ETC) with P, PI, PD, and PID controllers, combined with Ammonia-NOx-Ratio (ANR) based feedforward to control the urea dosing. Results showed that PI with feedforward performed best. It was also shown that combining feedback with feedforward performed better than only using feedback or feedforward.
Original languageEnglish
JournalIFAC-PapersOnLine
Volume50
Issue number1
Pages (from-to)5998-6003
ISSN2405-8963
DOIs
Publication statusPublished - 2017
Event20th IFAC World Congress 2017 - Toulouse, France
Duration: 9 Jul 201714 Jul 2017
Conference number: 20
http://www.ifac2017.org/

Conference

Conference20th IFAC World Congress 2017
Number20
CountryFrance
CityToulouse
Period09/07/201714/07/2017
Internet address

Keywords

  • Control and Systems Engineering
  • Automotive control
  • Automotive emissions
  • Feedback control
  • Feedforward control
  • Pareto front
  • PID control
  • SCR

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