This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
On the Calibration of Single-Shot Planar Laser Imaging Techniques in Engines
Technical Paper
2002-01-0748
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The noise characteristics of four camera systems representative of those typically used for laser-imaging experiments (a back-illuminated slow-scan camera, a frame-straddling slow-scan camera, an intensified slow-scan camera and an intensified video-rate camera) were investigated, and the results are presented as a function of the signal level and illumination level. These results provide the maximum possible signal-to-noise ratio for laser-imaging experiments, and represent the limit of quantitative signal interpretation. A calibration strategy for engine data that limits the uncertainties associated with thermodynamic and optical correction was presented and applied to engine data acquired with two of the camera systems. When a rigorous analysis of the signal is performed it is seen that shot noise limits the quantitative interpretation of the data for most typical laser-imaging experiments, and obviates the use of single-pixel data.
Recommended Content
Authors
Citation
Rothamer, D. and Ghandhi, J., "On the Calibration of Single-Shot Planar Laser Imaging Techniques in Engines," SAE Technical Paper 2002-01-0748, 2002, https://doi.org/10.4271/2002-01-0748.Also In
References
- Janesick, J.R. Elliot, T. Collins, S. Blouke, M.M. Freeman, J. “Scientific charge-coupled devices,” Optical Engineering 26 8 692 714 1987
- Paul, P.H. Vancruyningen I. Hanson, R.K. Kychakoff, G. “High resolution digital flowfield imaging of jets,” Experiments in Fluids 9 241 251 1990
- Kychakoff, G. Howe, R.D. Hanson R.K. “Quantitative flow visualization technique for measurements in combustion gases,” Applied Optics 23 5 704 712 1984
- Dereniak, E.L. Crowe, D.G. Optical Radiation Detectors John Wiley & Sons 1984
- Miles, P.C. “Raman line imaging for spatially and temporally resolved mole fraction measurements in internal combustion engines,” Applied Optics 38 9 1714 1732 1999
- Ghandhi, J.B. Felton, P.G. Gajdeczko, B.F. Bracco, F.V. “Investigation of the fuel distribution in a two-stroke engine with an air-assisted injector,” SAE Paper 940394 1994
- LeCoz, J-F Baritaud, T. “Application of laser-induced fluorescence for measuring the thickness of evaporating gasoline liquid films,” Proceedings of the 7 th International Symposium on Developments in Laser Techniques and Applications to Fluid Mechanics Adrian, R.J. Durao, D.F.G. Durst, F. Heitor, M.V. Maeda, F. Whitelaw, J. Springer Verlag 1994
- Espey, C. Dec, J.E. Litzinger, T.A. Santavicca, D.A. “Planar laser Rayleigh scattering for quantitative vapor-fuel imaging in a Diesel jet,” Combustion and Flame 109 65 86 1997
- Kim, T. Ghandhi, J.B. “Quantitative 2-D fuel vapor concentration measurements in an evaporating Diesel spray using the exciplex fluorescence method,” SAE Paper 2001-01-3495 2001
- Thurber, M.C. Grisch, F. Kirby, B.J. Votsmeier, M. Hanson, R.K. “Measurements and modeling of acetone laser-induced fluorescence with implications for temperature-imaging diagnostics,” Applied Optics 37 21 4963 4978 1998
- Probst, D.M. “Spray mixing in engines,” Dept. of Mechanical Engineering University of Wisconsin-Madison 2001
- Strand, T.E. Rothamer, D.A. Ghandhi, J.B. “Flame structure visualization in a DISI engine under stratified operation via PLIF,” SAE Paper 2001-01-3649 2001
- Arnold, A. Buschmann, A. Cousyn, B. Decker, M. Vannobel, F. Sick, V. Wolfrum, J. “Simultaneous imaging of fuel and hydroxyl radicals in an in-line four cylinder SI engine,” SAE Paper 932696 1993
- Hansen, D.A. Lee, E.K.C. “Radiative and nonradiative transitions in the first excited singlet sate of symmetrical methyl-substituted acetones,” J. Chem. Phys 62 1 183 189 1975
- Ghandhi, J.B. Felton, P.G. “On the fluorescence behavior of ketones at high temperatures,” Exp. Fluids 21 143 144 1996