Your browser doesn't support javascript.
loading
NOx Emission Removal from a Parallel Diesel Engine Group by SCR System Based on Distributed Control Technology.
Lei, Yan; Qin, Chao; Qiu, Tao; Yue, Guangzhao; Ding, Mengzhu.
Afiliação
  • Lei Y; Department of Automotive Engineering, Beijing University of Technology, Beijing 100124, China.
  • Qin C; Department of Automotive Engineering, Beijing University of Technology, Beijing 100124, China.
  • Qiu T; Department of Automotive Engineering, Beijing University of Technology, Beijing 100124, China.
  • Yue G; School of Transport and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China.
  • Ding M; Department of Automotive Engineering, Beijing University of Technology, Beijing 100124, China.
Environ Sci Technol ; 55(9): 6352-6362, 2021 05 04.
Article em En | MEDLINE | ID: mdl-33687198
In industrial application, an engine group with several engines running in parallel produces emissions, and because of its variable operation conditions and the number of engines being run, it produces great pollution. This study proposes a distributed control system (DCS) method to deal with NOx emissions from a diesel engine group. This DCS method contains several diesel engine test benches in parallel, and each engine is connected to an independent DCS unit with a selective catalytic reduction (SCR) device, and the central processing unit (CPU) distributes controlling quantities to each DCS unit. A dimensionless parameter, coefficient of difficulty K, is introduced to evaluate the NOx conversion efficiency of each unit. A control algorithm adopting the minimum K as the optimization control object to distribute the real-time NOx conversion efficiency for each unit is presented. This DCS deNOx technology has been applied in 10-engine test benches in parallel, and the results show that the DCS method not only controls NOx emissions of the engine group within the emission standard limit but also exhibits a good economic performance for suitable NOx conversion efficiency distribution and economical urea injection dose. This DCS emission control method is suitable for multiple diesel engines running in parallel under conditions of varied speeds and loads.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Emissões de Veículos / Gasolina Idioma: En Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Emissões de Veículos / Gasolina Idioma: En Ano de publicação: 2021 Tipo de documento: Article