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A simulation and experimental verification of the operation of the oxidising catalytic converter in diesel engine.
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Motor Transport Institute, Poland
Submission date: 2023-11-22
Acceptance date: 2024-02-13
Online publication date: 2024-02-18
Publication date: 2024-02-18
Corresponding author
Marcin Ślęzak   

Motor Transport Institute, Jagiellońska 80, 03-301, Warsaw, Poland
Eksploatacja i Niezawodność – Maintenance and Reliability 2024;26(2):184090
  • Application of the AVL Boost program to simulate the operation of an oxidising catalytic converter turned out to be an effective way to select the converter dimensions, thereby reducing its costly empirical tests.
  • The aim of the article was to examine and compare the properties of the oxidising converter in reducing the concentrations of CO, HC and NO to NO2 in the exhausts of a diesel engine by using simulation calculations in the AVL Boost program and empirical tests on an engine dynamometer.
  • Increasing the volume of the converter and the density of its channels has a positive effect on the conversion of concentrations of CO, HC and NO to NO2.
This paper investigates an oxidizing catalytic converter in a diesel engine's particulate filter system, focusing on simulations and empirical studies. The converter, with a 1.4 dm3 volume and 400 cpsi channel density, features a platinum coating of 2.5 g/dm3. Scanning electron microscopy (SEM) examined its surface, revealing platinum and a highly porous structure with randomly distributed Pt crystallites. Simulations were conducted using AVL Boost, utilizing real exhaust gas concentrations to assess various converter volumes and channel densities for CO, HC, and NO2 conversion in NOX. These simulations were paralleled with empirical tests on an engine dynamometer. The comparison of simulation and experimental data showed that the simulation algorithm could accurately predict the converter's performance in reducing CO and HC levels and NO2 in NOX. This suggests that simulations can partly replace costly empirical research, offering a preliminary evaluation of the converter's future effectiveness.
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