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Investigation of Soot Formation in a D.I. Diesel Engine by Using Laser Induced Scattering and Laser Induced Incandescence  

Lee, Ki-Hyung (Department of Mechanical Engineering, Hanyang University)
Chung, Jae-Woo (Korea Automotive Technology Institut)
Kim, Byung-Soo (Korea Automotive Technology Institut)
Kim, Sang-Kwon (Hyundai Motor Company)
Publication Information
Journal of Mechanical Science and Technology / v.18, no.7, 2004 , pp. 1169-1176 More about this Journal
Abstract
Soot has a great effect on the formation of PM (Particulate Matter) in D.I. (Direct Injection) Diesel engines. Soot in diesel flame is formed by incomplete combustion when the fuel atomization and mixture formation were poor. Therefore, the understanding of soot formation in a D.I. diesel engine is mandatory to reduce PM in exhaust gas. To investigate soot formation in diesel combustion, various measurements have been performed with laser diagnostics. In this study, the relative soot diameter and the relative number density in a DJ. engine was measured by using LIS (Laser Induced Scattering) and LII (Laser Induced Incandescence) methods simultaneously which are planar imaging techniques. And a visualization D.I. diesel engine was used to introduce a laser beam into the combustion chamber and investigate the diffusion flame characteristics. To find the optimal condition that reduces soot formation in diesel combustion, various injection timing and the swirl flow in the cylinder using the SCV (Swirl Control Valve) were applied. From this experiment, the effects of injection timing and swirl on soot formation were established. Effective reduction of soot formation is possible through the control of these two factors.
Keywords
Spray; LII (Laser Induced Incandescence); LIS (Laser Induced Scattering); D.I. Diesel Engine; Swirl; Soot Distribution; Visualization;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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