Urea-SCR Process Control for Diesel Engine Using Feedforward-Feedback Nonlinear Method
Year: 2015
Type: article
Abstract: Urea selective catalytic reduction (urea-SCR) process control is very important for exhaust gas aftertreatment in diesel engines. A control system tracking ammonia coverage ratio is designed to achieve high NOx conversion efficiency and low ammonia slip for urea-SCR process in this paper. The control system consists of a nonlinear feedforward controller based on flatness and a PI feedback controller to deal with the uncertainties and disturbance. Furthermore, a tuning method of controller parameters is presented based on randomized algorithms. Finally, the simulation results are given to demonstrate the effectiveness of the proposed control scheme.
Source: IFAC-PapersOnLine
Authors: Jinghua Zhao, Zhigang Chen, Yunfeng Hu, Hong Chen
Language: English
Topic: Engine and Fuel Emissions
Subfield: Automotive Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2192553547