Control of highly diluted combustion in Diesel engines

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• 作者：M.  ; Hillion^a ;   ; ^b ;   ; ^{mathieu.hillion@mines-paristech.fr} ; J.  ; Chauvin^a ;   ; ^{jonathan.chauvin@ifpen.fr} ; N.  ; Petit^b ;   ; ^{nicolas.petit@mines-paristech.fr}
• 关键词：Engine control ; Highly diluted combustion ; Cool flame ; Combustion control
• 刊名：Control Engineering Practice
• 出版年：2011
• 出版时间：November 2011
• 年：2011
• 卷：19
• 期：11
• 页码：1274-1286
• 全文大小：1305 K

文摘

In this paper, an open-loop control strategy to improve the stability of highly diluted Diesel combustion during sharp transients is proposed. The main advantage of this open-loop method is that no additional in-cylinder sensor is required. The approach coordinates existing airpath and fuelpath controllers, and aims at accurately controlling the end of the cool-flame phenomenon. For this purpose, the injection time is adjusted based on an auto-ignition model and a cool-flame model. Both models are expressed under integral forms, named knock integral models. Experimental results obtained on a test bench and on-board a vehicle are presented. The results highlight the relevance of the approach in terms of combustion stability improvement, pollutant emissions and noise.