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

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• 作者：Stefano d&rsquo ; Ambrosio ; Daniele Iemmolo ; ^{daniele.iemmolo@polito.it} ; Alessandro Mancarella ; Roberto Vitolo
• 关键词：premixed-charged compression ignition (PCCI) ; diesel advanced combustion ; design of experiments ; model-based optimization
• 刊名：Energy Procedia
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：101
• 期：Complete
• 页码：909-916
• 全文大小：503 K
• 卷排序：101

文摘

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.