Urea Injection and Uniformity of Ammonia Distribution in SCR System of Diesel Engine-Reference-Cited by-同舟云学术

Urea Injection and Uniformity of Ammonia Distribution in SCR System of Diesel Engine

Published:2020-05-08 Issue:2 Volume:5 Page:129-142
ISSN:2444-8656
Container-title:Applied Mathematics and Nonlinear Sciences
language:en
Short-container-title:

Author:

Jiao Yunjing¹,Zheng Qingping²

Affiliation:

1. Department of Mechanical and Electrical Engineering , North China Institute of Aerospace Engineering , Langfang , China

2. School of Energy and Environmental Engineering , Hebei University of Technology , Tianjin , China

Abstract

Abstract The kinetic mechanism of chemical reaction was used to calculate the coupling of the fluid kinetics with the urea decomposition reaction and the SCR reaction kinetics. Combined with the engine test and simulation, the distribution uniformity of the urea injection and ammonia gas was studied. Through numerical simulation on urea spray and exhaust flow in Urea-SCR system, the flow field characteristics in whole after-treatment system are gotten. By using numerical calculation in different urea injection angle and orifice sizes, the urea-crystallization and ammonia distribution have been studied and the optimal urea spray angle and nozzle size are given.

Publisher

Walter de Gruyter GmbH

Subject

Applied Mathematics,Engineering (miscellaneous),Modeling and Simulation,General Computer Science

Link

https://www.sciendo.com/pdf/10.2478/amns.2020.2.00004

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