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Detailed investigation of non-catalytic DPF regeneration

Authors

  • S. Bensaid,

    1. Department of Materials Science and Chemical Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
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  • C. J. Caroca,

    1. Department of Materials Science and Chemical Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
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  • N. Russo,

    1. Department of Materials Science and Chemical Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
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  • D. Fino

    Corresponding author
    1. Department of Materials Science and Chemical Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
    • Department of Materials Science and Chemical Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
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Abstract

The present investigation concerns the phenomena that occur during the non-catalytic regeneration of Diesel Particulate Filters (DPFs). The temperature evolution in the filter has been correlated to the emissions of CO, HC, NO, and NO2 during the loading and regeneration process. The emissions were assessed over both the diesel oxidation catalyst (DOC) and the DPF, in order to characterise the chemical species evolution inside the after-treatment line. Different regeneration temperatures, which have been found to have a strong impact on the evolution of the soot oxidation rate, have been assessed. Finally, the particulate emissions during regeneration have been measured on a number and size basis.

Abstract

La présente analyse concerne le phénomène qui se produit lors de la régénération non catalytique des filtres à particules pour diesel (FPD). L'évolution de la température dans le filtre a été en corrélation avec les émissions de CO, HC, NO et NO2 lors du processus de chargement et de régénération. Les émissions ont été évaluées à la fois pour le catalyseur d'oxydation pour diesel (COD) et le FPD, dans le but de caractériser l'évolution de l'espèce chimique à l'intérieur de la ligne post-traitement. On a évalué différentes températures de régénération qui ont une forte incidence sur l'évolution du taux d'oxydation des suies. Enfin, les émissions de matières particulaires lors de la régénération ont été mesurées sur une base de nombre et de taille.

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