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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 23 — Dec. 1, 2012
  • pp: 4964–4966

Combined velocity and temperature imaging of gas flow in an engine cylinder

Satoshi Someya, Yasuhiro Okura, Mitsunori Uchida, Yoshihisa Sato, and Koji Okamoto  »View Author Affiliations

Optics Letters, Vol. 37, Issue 23, pp. 4964-4966 (2012)

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A combined velocity and temperature measurement method using a high-speed camera, a pulsed UV laser, and temperature-sensitive phosphor particles is proposed. The temperature was calculated from the phosphorescence lifetime, while the velocity was obtained from images of the phosphor particles during a single decay. This method was applied to in-cylinder measurements of gas flow at high temperatures under motoring conditions. Tumble flow was observed at the top dead center. The temperature-change dependence on the crank angle agrees qualitatively with the gas temperature and the pressure.

© 2012 Optical Society of America

OCIS Codes
(120.6780) Instrumentation, measurement, and metrology : Temperature
(120.7250) Instrumentation, measurement, and metrology : Velocimetry
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: September 10, 2012
Revised Manuscript: November 4, 2012
Manuscript Accepted: November 5, 2012
Published: November 28, 2012

Satoshi Someya, Yasuhiro Okura, Mitsunori Uchida, Yoshihisa Sato, and Koji Okamoto, "Combined velocity and temperature imaging of gas flow in an engine cylinder," Opt. Lett. 37, 4964-4966 (2012)

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