A predictive control approach to diesel Selective Catalytic Reduction

J. Sowman, Dina Shona Laila, A. J. Cruden, P. Fussey, A. Truscott

Research output: Contribution to conferencePaper

6 Citations (Scopus)


Reduction of oxides of nitrogen (NOx) emitted from diesel exhaust systems is a current problem due to increased stringency in worldwide emissions legislation. One of the most successful approaches to reduce tailpipe NOx is to reduce NOx by ammonia over a catalyst, known as Selective Catalytic Reduction (SCR). Control of the ammonia injection in such systems is typically a map-based approach, often augmented by feedback from NOx sensors to account for mechanical variation and ageing. We show that a predictive control approach to this system yields several compelling improvements over such industry standard controllers during a representative test cycle. These include better NOx conversion performance whilst simultaneously minimising the quantity of ammonia released to the environment, along with reduced design effort.
Original languageEnglish
Pages3073 - 3078
Publication statusPublished - 23 Nov 2015
EventEuropean Control Conference (ECC) - Linz, Austria
Duration: 15 Jul 201517 Jul 2015


ConferenceEuropean Control Conference (ECC)

Bibliographical note

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  • Thyristors
  • Mathematical model
  • Sensors
  • Predictive models
  • Diesel engines
  • Inductors
  • Predictive control
  • predictive control
  • air pollution control
  • ammonia
  • catalysis
  • chemical variables control
  • diesel engines
  • exhaust systems
  • feedback
  • NH3
  • predictive control approach
  • diesel selective catalytic reduction
  • nitrogen oxide reduction
  • NOx emission
  • diesel exhaust system
  • emissions legislation
  • tailpipe NOx reduction
  • ammonia injection control
  • map-based approach
  • NOx sensor feedback
  • mechanical variation
  • ageing
  • NOx conversion performance
  • ammonia release minimisation
  • NOx
  • NOx Reduction
  • Selective Catalytic Reduction
  • Predictive Control
  • Exhaust Aftertreatment
  • Emissions Reduction


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