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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 24 — Dec. 15, 2012
  • pp: 5244–5246

In-cylinder temperature measurements via time-correlated single-photon counting of toluene laser-induced fluorescence through a fiber-based sensor

Eugen Friesen, Christopher Gessenhardt, Sebastian A. Kaiser, Thomas Dreier, and Christof Schulz  »View Author Affiliations


Optics Letters, Vol. 37, Issue 24, pp. 5244-5246 (2012)
http://dx.doi.org/10.1364/OL.37.005244


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Abstract

In a near-production internal combustion engine, the effective fluorescence lifetime of toluene was determined by time-correlated single-photon counting with a minimally invasive fiber-optic spark-plug sensor. The lifetime measurement provided continuous crank-angle-resolved measurements of gas temperature. Proof-of-concept experiments in a motored four-cylinder spark-ignition engine were evaluated with a time resolution of 500 μs, yielding temperature precision of 25 K (standard deviation) at top-dead center. In these experiments, 10% toluene was added to the nonfluorescent base fuel iso-octane. Fluorescence lifetimes were related to temperature via calibration measurements in a high temperature pressure vessel, with the data fitted to a functional dependence derived from a previously published phenomenological model.

© 2012 Optical Society of America

OCIS Codes
(040.3780) Detectors : Low light level
(320.4240) Ultrafast optics : Nanosecond phenomena
(320.7100) Ultrafast optics : Ultrafast measurements
(060.3510) Fiber optics and optical communications : Lasers, fiber

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: October 17, 2012
Revised Manuscript: November 22, 2012
Manuscript Accepted: November 23, 2012
Published: December 14, 2012

Citation
Eugen Friesen, Christopher Gessenhardt, Sebastian A. Kaiser, Thomas Dreier, and Christof Schulz, "In-cylinder temperature measurements via time-correlated single-photon counting of toluene laser-induced fluorescence through a fiber-based sensor," Opt. Lett. 37, 5244-5246 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-24-5244


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References

  1. A. Grosch, V. Beushausen, O. Thiele, and R. Grzeszik, “Crank angle resolved determination of fuel concentration and air/fuel ratio in a SI-internal combustion engine using a modified optical spark plug,” SAE Paper 2007-01-0644 (2007).
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