Flame-Kernel Model for Analysis of Fiber-Optic Instrumented Spark Plug Data 900022
A flame-kernel model is formulated for the analysis of data obtained using a recently developed spark plug equipped with fiber-optic flame-arrival detectors. The detectors measure the elapsed time from ignition to flame arrival at the detector locations for each engine cycle. The model, which assumes a flame kernel of elliptical cross section undergoing growth and convective displacement at constant rates, is used to estimate those rates from cycle-resolved measurements. It is shown that convection-rate estimation, ostensibly an interpolation of detector signals, in some cases involves an extrapolation that is sensitive to model assumptions. Implications concerning experimental procedure and data interpretation are discussed.
Citation: Kerstein, A. and Witze, P., "Flame-Kernel Model for Analysis of Fiber-Optic Instrumented Spark Plug Data," SAE Technical Paper 900022, 1990, https://doi.org/10.4271/900022. Download Citation
Author(s):
Alan R. Kerstein, Peter O. Witze
Affiliated:
Sandia National Laboratories, Livermore, CA
Pages: 11
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Spark ignition engines
Simulation and modeling
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