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Numerical Analysis of Flow Characteristics in a Swirl Chamber Type Diesel Engine Depending on Passage Hole Type

[+] Author Affiliations
Gyeung Ho Choi, Tae Yun Kwon, Ju Hee Yun

Keimyung University, Daegu, Korea

Yon Jong Chung

Daegu Mirae College, Kyongbuk, Korea

Chang Uk Ha, Jong Soon Lee

Daedong Company, Ltd., Daegu, Korea

Sung Bin Han

Induk Institute of Technology, Seoul, Korea

Paper No. ICEF2005-1243, pp. 275-281; 7 pages
  • ASME 2005 Internal Combustion Engine Division Fall Technical Conference
  • ASME 2005 Internal Combustion Engine Division Fall Technical Conference (ICEF2005)
  • Ottawa, Ontario, Canada, September 11–14, 2005
  • Conference Sponsors: Internal Combustion Engine Division
  • ISBN: 0-7918-4736-5 | eISBN: 0-7918-3768-8
  • Copyright © 2005 by ASME


In a swirl chamber type diesel engine, a strong swirl is produced inside the swirl chamber during the compression stroke. By spraying the fuel into this chamber and thus forming a good mixture, the engine can obtain excellent combustion even at high speeds. Therefore, swirl chamber type diesel engines are favorable for high-speed operations, and because they can produce high power from a small size, they are used often for small, high-speed diesel engine applications. In order to simultaneously realize a reduction in harmful emissions and improvement in fuel consumption of the swirl chamber type diesel engine, reduction of the mixture formation period and complete combustion must be pursued; an optimum combustion chamber to achieve these tasks must first be designed. In this experiment, the effects of the area and the angle of the passage hole, which are the primary design factors of the swirl chamber type diesel engine, on the engine’s turbulent flow will be investigated. Using the commercial numerical analysis program the passage hole area and angle will be varied to analyze the intake and compression stages.

Copyright © 2005 by ASME



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