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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 1 — Jan. 1, 2010
  • pp: 37–49

Acetone laser-induced fluorescence behavior for the simultaneous quantification of temperature and residual gas distribution in fired spark-ignition engines

Micha Löffler, Frank Beyrau, and Alfred Leipertz  »View Author Affiliations


Applied Optics, Vol. 49, Issue 1, pp. 37-49 (2010)
http://dx.doi.org/10.1364/AO.49.000037


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Abstract

Although the fluorescence behavior of acetone has already been examined widely, the amount of data is still not sufficient for the quantification of signals over the parameter field relevant for combustion engines. This leads to large uncertainties when new excitation wavelengths are applied or in cases where temperature and pressure and bath gas composition dependences of the fluorescence yield must be extrapolated from models. This work presents calibration results of the fluorescence signal intensities in nitrogen, air, and an exhaust-gas–air mixture in the wide range from 298 to 748 K and from 0.2 bar ( 0.02 MPa ) to 20 bars for the two important excitation wavelengths 308 and 248 nm . Based on this data, measurements of temperature and exhaust gas concentrations in a fired spark ignition engine were performed with high accuracy in single-shot images also.

© 2010 Optical Society of America

OCIS Codes
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(120.6780) Instrumentation, measurement, and metrology : Temperature

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: August 12, 2009
Manuscript Accepted: September 29, 2009
Published: December 21, 2009

Citation
Micha Löffler, Frank Beyrau, and Alfred Leipertz, "Acetone laser-induced fluorescence behavior for the simultaneous quantification of temperature and residual gas distribution in fired spark-ignition engines," Appl. Opt. 49, 37-49 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-1-37

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