Modelling for Control of Exhaust Gas Recirculation on Large Diesel Engines

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• 作者：Jakob Mahler Hansen^* ; ^** ; Claes-Gö ; ran Zander^** ; Nicolai Pedersen^* ; Mogens Blanke^* ; ^*** ; Morten Vejlgaard-Laursen^**
• 关键词：NOx emission ; Exhaust gas recirculation ; Diesel engine ; Identification ; Green Ship
• 刊名：IFAC-PapersOnLine
• 出版年：2013
• 出版时间：2013
• 年：2013
• 卷：46
• 期：33
• 页码：380-385
• 全文大小：983 K

文摘

Exhaust Gas Recirculation (EGR) reduces NO_x emissions by reducing O₂ concentration for the combustion and is a preferred way to obtain emission regulations that will take effect from 2016. If not properly controlled, reduction of O₂ has adverse side effects and proper control requires proper dynamic models. While literature is rich on four-stroke automotive engines, this paper considers two-stroke engines and develops a non-linear dynamic model of the exhaust gas system. Parameters are determined by system identification. The paper uses black-box nonlinear model identification and modelling from first principles followed by parameter identification and compares the results of these approaches. The paper performs a validation against experimental data from a test engine and presents a linearised model for EGR control design.