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论文类型：会议论文

发表时间：2014-09-29

收录刊物：EI、CPCI-S

卷号：66

页面范围：33-36

关键字：premixed charge compression ignition (PCCI); late vale closing timing (IVC); genetic algorithm (GA)

摘要：Premixed charge compression ignition (PCCI) combustion is capable of reducing nitrogen oxides (NOx) and soot emissions simultaneously, while remaining high fuel efficiency. Whereas, PCCI combustion still faces the challenges of the control of ignition timing and the expansion of operating range. In this study, by coupling a multi-dimensional computational fluid dynamics (CFD) code and genetic algorithm (GA), the potential of high-load expansion by using late intake valve closing (IVC) was explored in a light-duty diesel PCCI engine. It was revealed that low fuel consumption, and low NOx and soot emissions could be achieved with the employment of retarded IVC timing, high EGR rate, boosted intake pressure, and optimized injection timing. (C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer-review under responsibility of the Engineering Department, Lancaster University