On particulate characterization in a heavy-duty diesel engine by time-resolved laserinduced incandescence

B. Bougie, L.C. Ganippa, N.J. Dam, J.J. Meulen, ter

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15 Citations (Scopus)
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Abstract

Time-resolved laser-induced incandescence (TR-LII) measurements have been performed inside the combustion chamber of a heavy-duty diesel engine running at low load and with regular diesel fuel. The LII traces were interpreted in terms of primary particle sizes, comparing two different assumed particle-size distributions: a mono-disperse and a log-normal distribution. The initial temperature of the particles (immediately after the laser pulse) is estimated by two-color pyrometry. We conclude that the initial temperature of the particles is not very critical for the outcome of the fitting procedure for the (mean) radius. Under the high-pressure conditions in the engine, the time dependence of the LII intensity contains sufficient structure to allow retrieval of details of the particle-size distribution.
Original languageEnglish
Pages (from-to)477-485
JournalApplied Physics B: Lasers and Optics
Volume83
Issue number3
DOIs
Publication statusPublished - 2006

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