JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A 2003 Vol.4 No.3 P.309-316

http://doi.org/10.1631/jzus.2003.0309

Three-dimensional transient numerical simulation for intake process in the engine intake port-valve-cylinder system

Author(s): LUO Ma-ji, CHEN Guo-hua, MA Yuan-hao
Affiliation(s): College of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Corresponding email(s): zanelmj@21cn.com
Key Words: Internal combustion engine, Intake flow, Transient numerical simulation, Dynamic grid generation

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Abstract: This paper presents a KIVA-3 code based numerical model for three-dimensional transient intake flow in the intake port-valve-cylinder system of internal combustion engine using body-fitted technique, which can be used in numerical study on internal combustion engine with vertical and inclined valves, and has higher calculation precision. A numerical simulation (on the intake process of a two-valve engine with a semi-sphere combustion chamber and a radial intake port) is provided for analysis of the velocity field and pressure field of different plane at different crank angles. The results revealed the formation of the tumble motion, the evolution of flow field parameters and the variation of tumble ratios as important information for the design of engine intake system.

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