NDLI: Numerical simulation of the effects of combustion chamber geometry on nonroad diesel engine performance

Content Provider	IEEE Xplore Digital Library
Author	Luo Maji Xiang Liangshan Li Xiong
Copyright Year	2011
Description	Author affiliation: School of Automotive Engineering, Wuhan University of Technology, China, 430070 (Luo Maji; Xiang Liangshan; Li Xiong)
Abstract	Combustion chamber geometry is very important for the performance of diesel engine, especially for the nonroad diesel engine with low fuel injection pressure. To decrease the experimental work, the CAE technique, such as computational fluid dynamics (CFD), was used to design the combustion chamber of a nonroad diesel engine. In order to investigate the effects of combustion chamber geometry on mixture formation and combustion quality and then choose a relatively better combustion chamber design scheme, many combustion chambers with different shapes at a constant compression ratio are designed and numerically investigated by CFD simulation. In this paper, three typical combustion chamber shapes were exhibited. The simulation results show that combustion quality is significantly affected by the reentrant diameter and transition radius in dumbbell-shaped combustion chamber of nonroad diesel engine. The obvious wall impingement of fuel spray occurs in combustion chamber with a smaller diameter/depth ratio, which leads to uneven air-fuel mixture and some fuel-dense regions. There exists an optimum chamber B, which possesses a better swirl intensity retention, stronger squish and higher turbulence kinetic energy, contributing to a better combustion situation and a good compromise between the soot and NOx emissions. Engine experiment valids the result.
Starting Page	2407
Ending Page	2411
File Size	446023
Page Count	5
File Format	PDF
ISBN	9781424480364
e-ISBN	9781424480395
DOI	10.1109/ICEICE.2011.5776966
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-15
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Geometry Diesel engines Computational modeling Combustion chamber Nonroad diesel engine Emission Numerical simulation Combustion Numerical models Fuels
Content Type	Text
Resource Type	Article

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