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论文类型：期刊论文

发表时间：2011-08-01

发表刊物：Journal of Harbin Institute of Technology (New Series)

收录刊物：EI、Scopus

卷号：18

期号：4

页面范围：56-62

ISSN号：10059113

摘要：The components of combustion chamber (cylinder head-cylinder liner-piston assembly-oil film) were taken as a coupled body. Based on the three-dimensional heat transfer numerical simulation of the coupled body, a coupled three-dimensional calculation model for in-cylinder working process and the combustion chamber components was built with domain decomposition and boundary coupled method, which implements the coupled three-dimensional simulation of in-cylinder working process and the combustion chamber components. The model was applied in the influence investigation of the space non-uniformity in heat transfer among combustion chamber components on the generation of in-cylinder emissions: NOx. The results showed that the heat transfer space non-uniformity of combustion chamber components directly influences the formation of in-cylinder NOx. The main area being influenced was the accessory area on the wall, while the influence on the generation of NOx in the central area couold be omitted.