Numerical Analysis of the Diffusion Process of Intake Mixture in Dual-Intake Valve Engines

The diffusion process of intake mixture (homogeneous mixture of air and gaseous fuel) in the cylinders of dual-intake valve S. I. engines has been analyzed numerically using the GTT and CIP methods and the κ-ε turbulence model. The following have been found : In one engine in which a tumbling vortex...

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Published inNihon Kikai Gakkai rombunshuu. B hen Vol. 59; no. 559; pp. 966 - 973
Main Authors Wakisaka, Tomoyuki, Isshiki, Yoshihiro, Shimamoto, Yuzuru, Magarida, Naofumi
Format Journal Article
LanguageEnglish
Japanese
Published The Japan Society of Mechanical Engineers 1993
Subjects
Combustion
Internal combustion engines
Mathematical models
Numerical analysis
Q1
Swirl
Turbulence
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Summary:The diffusion process of intake mixture (homogeneous mixture of air and gaseous fuel) in the cylinders of dual-intake valve S. I. engines has been analyzed numerically using the GTT and CIP methods and the κ-ε turbulence model. The following have been found : In one engine in which a tumbling vortex is generated. the mixture is localized mainly in half of the combustion chamber : namely, it is stratified when the fuel is supplied into only, one intake port. In another engine in which a swirl is generated by holding one intake valve closed, a relatively homogeneous mixture or an axially-stratified mixture is generated in the chamber depending on early or late fuel supply.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0387-5016
1884-8346
DOI:10.1299/kikaib.59.966