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Acetone PLIF for Fuel Distribution Measurements in Liquid Phase LPG Injection Engine  

오승묵 (한국기계연구원)
박승재 (충남대학교 항공우주공학과 대학원)
허환일 (충남대학교 항공우주공학과)
강건용 (한국기계연구원)
배충식 (한국과학기술원 기계공학과)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.12, no.1, 2004 , pp. 74-82 More about this Journal
Abstract
Planar laser-induced fluorescence(PLIF) has been widely used to obtain two dimensional fuel distribution. Acetone PLIF is chosen because fluorescence signal from acetone as a fluorescent tracer is less sensitive to oxygen quenching than other dopants. Acetone PLIF is applied to measure quantitative air excess ratio distribution in an engine fueled with LPG. Acetone is excited by KrF excimer laser (248nm) and its fluorescence image is acquired by ICCD camera with a cut-off filter to suppress Mie scattering from the laser light. For the purpose of quantifying PLIF signal, an image processing method including the correction of laser sheet beam profile is suggested. Raw images are divided by each intensity of laser energy and profile of laser sheet beam. Inhomogeneous fluorescence images scaled with the reference data, which is taken by a calibration process, are converted to air excess ratio distribution. This investigation shows instantaneous quantitative measurement of planar air excess ratio distribution for gaseous fuel.
Keywords
Air fuel ratio; Optical engines; Acetone laser-induced fluorescence method; Liquid phase LPG injection engine;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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