Citation
Carlos Zavala, Pannag R Sanketi, Mark Wilcutts, Tomoyuki Kaga, Karl Hedrick. "Simplified Models of Engine HC Emissions, Exhaust Temperature and Catalyst Temperature for Automotive Coldstart". Fifth IFAC Symposium for Advances in Automotive Control, IFAC, August, 2007.

Abstract
The initial 1-2 minutes of operation of an automotive spark-ignition engine, commonly called as the "coldstart" period, produces more than 75-80 % of the hydrocarbon (HC) emissions in a typical drive cycle. Model-based controller development requires accurate, yet simple, models that can run in real-time. Simple, intuitive models are developed to predict both tailpipe hydrocarbon (HC) emissions and exhaust temperature during coldstart. Each of the models is chosen to be sum of first order linear systems based on the experimental data and ease of parameter identification. Inputs to these models are AFR, spark timing and engine crankshaft speed. A reduced order thermodynamic model for the catalyst temperature is also developed. The parameters are identified using least squares technique. The model estimates for the coldstart are compared with the experimental results with good agreement

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Citation formats

• HTML

  Carlos Zavala, Pannag R Sanketi, Mark Wilcutts, Tomoyuki
  Kaga, Karl Hedrick. <a
  href="http://chess.eecs.berkeley.edu/pubs/248.html">Simplified
  Models of Engine HC Emissions, Exhaust Temperature and
  Catalyst Temperature for Automotive Coldstart</a>,
  Fifth IFAC Symposium for Advances in Automotive Control,
  IFAC, August, 2007.

• Plain text

  Carlos Zavala, Pannag R Sanketi, Mark Wilcutts, Tomoyuki
  Kaga, Karl Hedrick. "Simplified Models of Engine HC
  Emissions, Exhaust Temperature and Catalyst Temperature for
  Automotive Coldstart". Fifth IFAC Symposium for Advances in
  Automotive Control, IFAC, August, 2007.

• BibTeX

  @inproceedings{ZavalaSanketiWilcuttsKagaHedrick07_SimplifiedModelsOfEngineHCEmissionsExhaustTemperature,
      author = {Carlos Zavala and Pannag R Sanketi and Mark
                Wilcutts and Tomoyuki Kaga and Karl Hedrick},
      title = {Simplified Models of Engine HC Emissions, Exhaust
                Temperature and Catalyst Temperature for
                Automotive Coldstart},
      booktitle = {Fifth IFAC Symposium for Advances in Automotive
                Control},
      organization = {IFAC},
      month = {August},
      year = {2007},
      abstract = {The initial 1-2 minutes of operation of an
                automotive spark-ignition engine, commonly called
                as the "coldstart" period, produces more than
                75-80 % of the hydrocarbon (HC) emissions in a
                typical drive cycle. Model-based controller
                development requires accurate, yet simple, models
                that can run in real-time. Simple, intuitive
                models are developed to predict both tailpipe
                hydrocarbon (HC) emissions and exhaust temperature
                during coldstart. Each of the models is chosen to
                be sum of first order linear systems based on the
                experimental data and ease of parameter
                identification. Inputs to these models are AFR,
                spark timing and engine crankshaft speed. A
                reduced order thermodynamic model for the catalyst
                temperature is also developed. The parameters are
                identified using least squares technique. The
                model estimates for the coldstart are compared
                with the experimental results with good agreement},
      URL = {http://chess.eecs.berkeley.edu/pubs/248.html}
  }
  

Posted by Jose Carlos Zavala Jurado on 14 May 2007.
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