Cycle-Resolved Two-Dimensional Flame Visualization in a Spark-Ignition Engine 881634
A cycle-resolved two-dimensional flame visualization technique using Mie-scattering from submicron sized smoke particles added to the homogeneous charge mixture of a spark-ignition engine has been developed. This diagnostic technique was applied to a square piston engine with four windows. Pulsed laser sheets were generated by a copper vapor laser at a frequencies of 6 kHz. The light scattered by the smoke particles was collected by a drum camera on high sensitivity photographic film.
The flame contours were analyzed using fractal analysis and complex Fourier transform procedures. Radii of curvature, wrinkling factors and turbulent burning velocities have been determined at different engine speeds and equivalence ratios.
Citation: Ziegler, G., Zettlitz, A., Meinhardt, P., Herweg, R. et al., "Cycle-Resolved Two-Dimensional Flame Visualization in a Spark-Ignition Engine," SAE Technical Paper 881634, 1988, https://doi.org/10.4271/881634. Download Citation
G.F.W. Ziegler, A. Zettlitz, P. Meinhardt, R. Herweg, R. Maly, W. Pfister
Institute of Physical Electronics, University of Stuttgart, W. Germany, Daimler-Benz AG, W. Germany
1988 SAE International Fall Fuels and Lubricants Meeting and Exhibition
SAE Transactions Journal of Fuels and Lubricants-V97-3