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http://dx.doi.org/10.3795/KSME-B.2002.26.12.1655

A Study on the Characteristics of Swirl Flow in a Diesel Engine by 2-Zone Energy Method and Image Process of Flame  

Chung, Jae-Woo (자동차부품연구원)
Lee, Ki-Hyung (한양대학교 기계공학과)
Lee, Chang-Sik (한양대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.26, no.12, 2002 , pp. 1655-1662 More about this Journal
Abstract
Recently, many researches have been performed to improve the performance of the combustion and emission in a D.I.Diesel engine. And many new techniques have been introduced and developed to reduce NO$_{x}$ and soot exhausted from diesel combustion. Some of these methods have the peculiar injection timing which is not used to traditional timing. To optimize these injection timing, characteristics of swirl flow and interaction of swirl with injection in the diesel engine should be investigated more carefully. Therefore, in this study, 2-zone energy method is adopted for the understanding of swirl flow in condition of moving piston, and then flame visualizations and image process are performed. From these studies, the characteristics of the swirl flow generated by SCV was investigated and the effect of swirl on injection timing was elucidated. As the results, velocity distribution caused by swirl flow increase the space utilization rate of flame plums. And flame plums of weak momentum are remained inside of combustion chamber by the swirl flow.w.
Keywords
2-Zone Energy Method; Swirl Flow; Diesel; Image Process; Swirl Control Valve;
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