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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 4 — Feb. 1, 2009
  • pp: B94–B104

High-speed laser-induced fluorescence and spark plug absorption sensor diagnostics for mixing and combustion studies in engines

Michael Cundy, Torsten Schucht, Olaf Thiele, and Volker Sick  »View Author Affiliations

Applied Optics, Vol. 48, Issue 4, pp. B94-B104 (2009)

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Simultaneous high-speed in-cylinder measurements of laser-induced fluorescence of biacetyl as a fuel tracer and mid-infrared broadband absorption of fuel and combustion products (water and carbon dioxide) using a spark plug probe are compared in an optical engine. The study addresses uncertainties and the applicability of absorption measurements at a location slightly offset to the spark plug when information about mixing at the spark plug is desired. Absorbance profiles reflect important engine operation events, such as valve opening and closing, mixing, combustion, and outgassing from crevices.

© 2008 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(300.1030) Spectroscopy : Absorption
(300.2530) Spectroscopy : Fluorescence, laser-induced
(110.6915) Imaging systems : Time imaging

Original Manuscript: July 31, 2008
Revised Manuscript: November 14, 2008
Manuscript Accepted: November 19, 2008
Published: December 22, 2008

Michael Cundy, Torsten Schucht, Olaf Thiele, and Volker Sick, "High-speed laser-induced fluorescence and spark plug absorption sensor diagnostics for mixing and combustion studies in engines," Appl. Opt. 48, B94-B104 (2009)

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