Product concept and design process of an SCR Mixer to solve trade-off between urea mixing uniformity and exhaust loss and to improve engineering efficiency

2023-32-0063

09/29/2023

Event
2023 JSAE/SAE Powertrains, Energy and Lubricants International Meeting
Authors Abstract
Content
This study presents the development of newly proposed SCR mixer for diesel engine that improves vehicle NOx emission without rebound of the exhaust pressure loss. Unique SCR mixer structure which produces multiple vortices can realize lower NOx emission due to the highly uniform mixing of NH3 generated from the SCR spray and the exhaust gas, compared to the conventional mixer which produce a single vortex. Through its unique mixer structure constructed with some blades that generate multiple vortices. In order to study the mixer structure in a short period of time, 2 steps design process have been studied by separating parametric study in flow analysis and performance confirmation in the dual-phase flow analysis. Consequently, this newly proposed SCR mixer realize excellent mixing performance without increasing the exhaust pressure loss.
Meta TagsDetails
DOI
https://doi.org/10.4271/2023-32-0063
Pages
8
Citation
Ashida, M., Shiga, Y., and Oyanagi, S., "Product concept and design process of an SCR Mixer to solve trade-off between urea mixing uniformity and exhaust loss and to improve engineering efficiency," SAE Technical Paper 2023-32-0063, 2023, https://doi.org/10.4271/2023-32-0063.
Additional Details
Publisher
Published
Sep 29, 2023
Product Code
2023-32-0063
Content Type
Technical Paper
Language
English