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Applied Catalysis in the Automotive Industry: Development of a Commercial Diesel Oxidation Catalyst Simulation Model Balanced for the Requirements of an Original Engine Manufacturer. Part 2, CO and HC Chemistry

  • Fredrik BlomgrenEmail author
  • Soran Shwan
  • Lars Carlhammar
  • Staffan Luong
  • Lennart Andersson
  • Miroslawa Milh
Article
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Abstract

Our previously developed model of NOx chemistry over a commercially used diesel oxidation catalyst has been extended by adding CO and HC chemistry. Synthetic gas bench experiments were conducted in order to elucidate mechanisms and provide the experimental foundation necessary for model calibration. Reactions tested and folded into the model include pure gas-phase CO oxidation, water-gas shift, and surface oxidation reactions for CO and HC. The majority of the experiments were performed at a space velocity corresponding to medium load in terms of driving conditions. The complete model was validated against engine test data. For that, it was necessary to assess the aging of the catalyst (in modeling terms translated to precious metal dispersion) used in the engine tests. After assuming a reasonable dispersion using engineering judgment, model validation against engine test data was performed. This showed the ability of the model to predict both trends and time resolved details.

Keywords

Applied catalysis DOC Modeling CO oxidation HC oxidation Correlation NOx-CO-HC Space velocity 

Abbreviations

EATS

Engine aftertreatment system

DOC

diesel oxidation catalyst

HC

hydro carbon (non combusted fuel)

SCR

selective catalytic reduction

SGB

synthetic gas bench

TPD

temperature programmed desorption

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Notes

Compliance with Ethical Standards

The authors declare that they have no competing interests.

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Volvo Group Trucks Technology (GTT), Advanced Technology & Research, Energy Conversion & Physics, Department BF-40550GothenburgSweden

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