Preliminary Optimization of the PCCI Combustion Mode in a Diesel Engine through a Design of Experiments

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Abstract

A premixed-charged compression ignition (PCCI) combustion mode has been applied to a Euro VI heavy-duty production engine to simultaneously diminish particulate matter and nitrogen oxide exhaust emissions. The considered methodology exploits statistical techniques to efficiently plan tests, analyze acquired data and provide cause-and-effect relationships about the observed phenomena. Regression models were designed to predict the desired outputs as functions of selected inputs. The model-based optimal calibration of the PCCI combustion led to a reduction of up to 90% in NOx and 99% in soot emissions, along with a fuel penalty of 9-13%, and an excessive increase in HC and CO.

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D’Ambrosio, S., Iemmolo, D., Mancarella, A., & Vitolo, R. (2016). Preliminary Optimization of the PCCI Combustion Mode in a Diesel Engine through a Design of Experiments. In Energy Procedia (Vol. 101, pp. 909–916). Elsevier Ltd. https://doi.org/10.1016/j.egypro.2016.11.115

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