레이저 탄성산란법, 여기적열법, 자발광을 이용한 가시화 디젤엔진의 후기연소의 2차원 soot 분포 측정

Measurments of 2-D Image Soot Distribution in Late Combustion Stage Using Elastic Scattering, Laser-Induced Incandescence and Flame Luminosity

Soot formation and oxidation is closely related to the combustion phenomena inside a diesel engine. Laser-based diagnostics provide a means for improving our understanding of diesel combustion, because they have highly temporal and spatial ability. To understand the soot behavior we did preliminary study by taking flame luminosity photographs and 2-D imaging soot distribution using Laser Elastic Scattering(LIS) and Laser-Induced Incandescence(LII). From the data we found that soot concentration was high in the bowl and disappeared from the central region in the late combustion stage.