Three-dimensional transient numerical simulation for gas exchange process in a four-stroke motorcycle engine

Three-dimensional transient numerical simulation of gas exchange process in a four-stroke motorcycle engine with a semi-spherical combustion chamber with two tilt valves was studied. Combination of the grid re-meshing method and the snapper technique made the valves move smoothly. The flow structure...

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Bibliographic Details
Published inJournal of Zhejiang University. A. Science Vol. 6; no. 10; pp. 1137 - 1145
Main Author 王春发 陈国华 罗马吉 杨万里
Format Journal Article
LanguageEnglish
Published School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China 01.10.2005
Subjects
三维空间
内燃机
动态特性
数字模拟
气体交换
Dynamic grid generation
Motorcycle engine
Gas exchange process
Transient numerical simulation
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ISSN1673-565X
1862-1775
DOI10.1631/jzus.2005.A1137

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Summary:Three-dimensional transient numerical simulation of gas exchange process in a four-stroke motorcycle engine with a semi-spherical combustion chamber with two tilt valves was studied. Combination of the grid re-meshing method and the snapper technique made the valves move smoothly. The flow structure and pattern in a complete engine cycle were described in detail. Tumble ratios around the x-axis and y-axis were analyzed. Comparison of computed pressure with experimental pressure under motored condition revealed that the simulation had high calculation precision; CFD simulation can be regarded as an important tool for resolving the complex aerodynamic behavior in motorcycle engines.
Bibliography:TK411.3
Motorcycle engine, Gas exchange process, Transient numerical simulation, Dynamic grid generation
33-1236/O4
ISSN:1673-565X
1862-1775
DOI:10.1631/jzus.2005.A1137