Two Dimensional Analysis of Diesel Combustion by Spectral Flame Emissivity Measurements

960838

02/01/1996

Event
International Congress & Exposition
Authors Abstract
Content
Spectral flame emissivity and absorption measurements with high temporal and spatial resolution were performed in an optically accessible high-swirl divided-chamber Diesel system.
Simultaneous determination of soot temperature, soot volume fraction and the OH radical concentration were made from the start to the end of the combustion in 153 locations equally distributed in the chamber. The engine was run at 2000 rpm and at fixed air-fuel ratio realizing 200 consecutive combustion cycles. To visualize the spatial and temporal spray and flame evolution, direct high-speed photographic sequences were taken at 8000 frames/s. The photographic sequences showed that the spray is strongly distorted and mixed by very high swirl resulting in a well premixed region where the combustion starts. The OH radicals were detected in the fuel reaction zone. Moreover OH concentration and soot volume fraction are well correlated with soot temperature.
Meta TagsDetails
DOI
https://doi.org/10.4271/960838
Pages
9
Citation
Corcione, F., Mazziotti, G., and Vaglieco, B., "Two Dimensional Analysis of Diesel Combustion by Spectral Flame Emissivity Measurements," SAE Technical Paper 960838, 1996, https://doi.org/10.4271/960838.
Additional Details
Publisher
Published
Feb 1, 1996
Product Code
960838
Content Type
Technical Paper
Language
English