(1) College of Energy and Power Engineering, Huazhong University of Science and Technology, 430074 Wuhan, China
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.