Research on numerical analysis code of oxidation behavior of hydrocarbon on diesel oxidation catalyst

Toru Uenishi*, Genki Shigeno, Goki Shigeno, Takao Fukuma, Jin Kusaka, Yasuhiro Daisho

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

A Hydrocarbon is supplied to a diesel oxidation catalyst installed in an upstream of the diesel particulate filter for burning particulate matter deposited on the diesel particulate filter. In this study, we developed a thermal fluid numerical computation fluid dynamics code including a chemical reaction rate model which shows the influence of a hydrocarbon concentration and a type on the oxidation reaction of a hydrocarbon on a diesel oxidation catalyst. First, oxidation characteristics of four types of hydrocarbon fuels (Decane, Hexadecane, Eicosane, and 1-Methylnaphthalene) were investigated using a straight flow substrate carrying a platinum palladium catalyst. 1-methylnaphthalene greatly deteriorated the oxidizing ability, but there was no significant difference in the three kinds of alkane fuels. The difference of these oxidation characteristics could be reproduced by constructing a sub model expressing the difference between the adsorption characteristics of each hydrocarbon fuel and the oxidation inhibition effect due to adsorption. Further, the oxidation characteristics of the zeolite-containing catalyst were evaluated. As a result of the evaluation, the oxidation characteristics of the decane of the linear hydrocarbon did not change when compared with the catalyst which did not contain the zeolite, but the oxidation characteristics of the aromatic hydrocarbon 1-methylnaphthalene deteriorated. It was assumed that the zeolite had high adsorption capacity of 1-methylnaphthalene and a further inhibition of a reaction by adsorption was accelerated.

Original languageEnglish
DOIs
Publication statusPublished - 2017
Event9th International Conference on Modeling and Diagnostics for Advanved Engine Systems, COMODIA 2017 - Okayama, Japan
Duration: 2017 Jul 252017 Jul 28

Other

Other9th International Conference on Modeling and Diagnostics for Advanved Engine Systems, COMODIA 2017
Country/TerritoryJapan
CityOkayama
Period17/7/2517/7/28

Keywords

  • Adsorption
  • DOC
  • HC
  • Inhibition
  • Modeling
  • Oxidation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering

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