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Control of highly diluted combustion in Diesel engines

Abstract : 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.
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Contributor : François Chaplais Connect in order to contact the contributor
Submitted on : Monday, November 7, 2011 - 7:20:45 PM
Last modification on : Wednesday, November 17, 2021 - 12:30:55 PM

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M. Hillion, Jonathan Chauvin, Nicolas Petit. Control of highly diluted combustion in Diesel engines. Control Engineering Practice, Elsevier, 2011, 19 (11), pp.1274-1286. ⟨10.1016/j.conengprac.2011.06.006⟩. ⟨hal-00639013⟩



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