The influence of the injection frequency on the urea selective catalytic reduction systems performance

This study presents the influence of the UWS injection frequency on a close coupled SCR systems performance. The investigation was performed with the CFD tool AVL Fire. In the paper the analysis of four different UWS injection frequencies in the three different operating points of diesel engine was...

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Bibliographic Details
Published inCombustion Engines (Online) Vol. 170; no. 3; pp. 73 - 77
Main Authors ROGÓŻ, Rafał, JAWORSKI, Piotr, KAPUSTA, Łukasz Jan, TEODORCZYK, Andrzej
Format Journal Article
LanguageEnglish
Published Polskie Towarzystwo Naukowe Silników Spalinowych/Polish Scientific Society of Combustion Engines 01.08.2017
Subjects
avl fire
selective catalytic reduction
uniformity index
uws
wall-film
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Summary:This study presents the influence of the UWS injection frequency on a close coupled SCR systems performance. The investigation was performed with the CFD tool AVL Fire. In the paper the analysis of four different UWS injection frequencies in the three different operating points of diesel engine was shown. The assessments of the system performance was referred to the ammonia distribution at catalyst intake and wall film formation inside the investigated geometry, as these are considered as crucial in such a configuration. The results showed that injection frequency affects both factors on different level depending from the flow conditions. In addition, the wall film crystallization risk was discussed basing on the obtained wall film characteristics.
ISSN:2300-9896
2658-1442
DOI:10.19206/CE-2017-311