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Demonstration of Two-Dimensional Temperature Characterization of Valves and Transparent Piston in a Gdi Optical Engine

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Author

  • Alaa Omrane
  • Greger Juhlin
  • Marcus Aldén
  • Göran Josefsson
  • Johan Engström
  • Timothy Benham

Summary, in English

Thermographic phosphors thermometry was used to measure engine valves and transparent piston temperatures in two dimensions as well point wise of a running, optically accessible, gasoline direct injection engine. The engine, fueled with isooctane, was operated in continuous and skip-fire mode at 1200 and 2000 rpm. A calibration of the phosphorescence lifetime and spectral properties against temperature allowed temperature measurements between 25 and 600mDC. Results from the measurements show the potential of the technique for two-dimensional mapping of engine walls, valves and piston temperatures inside the cylinder.

Department/s

Publishing year

2004

Language

English

Publication/Series

SAE Technical Papers

Document type

Journal article

Publisher

Society of Automotive Engineers

Topic

  • Atom and Molecular Physics and Optics

Keywords

  • Thermographic phosphors thermometry laser diagnostics surface temperature measurements combustion engines

Status

Published