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Investigation of In-Cylinder Flow Patterns in 4 Valve S. I. Engine by Using Single-Frame Particle Tracking Velocimetry

Title
Investigation of In-Cylinder Flow Patterns in 4 Valve S. I. Engine by Using Single-Frame Particle Tracking Velocimetry
Author
이기형
Keywords
In-Cylinder Gas Flow; Tumble Ratio; Single-Frame Particle Tracking Velocimetry; Swirl and Tuinble Flow; Tumble and Swirl Intensifying Valve
Issue Date
2001-01
Publisher
대한기계학회
Citation
KSME International Journa, v. 15, no. 1, page. 108-116
Abstract
The in-cylinder flow field of gasoline engine comprises unsteady compressible turbulent flows caused by the intake port, combustion chamber geometry. Thus, the quantitative analysis of the in-cylinder flow characteristics plays an important role in the improvement of engine performances and the reduction of exhaust emission. In order to obtain the quantitative analysis of the in-cylinder gas flows for a gasoline engine, the single-frame particle tracking velocimetry was developed, which is designed to measure 2-dimensional gas flow field. In this paper, influences of the swirl and tumble intensifying valves on the in-cylinder flow characteristics under the various intake flow conditions were investigated by using this P-TV method. Based on the results of experiment, the generation process of swirl and tumble flow in a cylinder during intake stroke was clarified. Its effect on the tumble ratio at the end of compression stroke was also investigated.
URI
https://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE00336434?https://repository.hanyang.ac.kr/handle/20.500.11754/158780
ISSN
1226-4865
DOI
10.1007/BF03184804
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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