Combustion Imaging in Engines Using Electrical Impedance Measurements 941991
This paper describes how the image of a flame within an enclosure can be reconstructed from multiple measurements of capacitive impedance, between non-intrusive sensing electrodes distributed around the combustion zone. Measurements across the combustion zone respond to the ionisation inherent in the combustion process, which changes the permittivity and hence the capacitance measured between electrodes. For this feasibility study, experimental data is presented from a laboratory analogue of an engine combustion chamber, demonstrating flames being imaged in real time. The sensing system is modelled using 3-D finite element methods, enabling analysis of practical electrode geometries for engine combustion chambers.
Citation: Beck, C., He, R., Waterfall, R., and Beck, M., "Combustion Imaging in Engines Using Electrical Impedance Measurements," SAE Technical Paper 941991, 1994, https://doi.org/10.4271/941991. Download Citation
Author(s):
C. M. Beck, R. He, R. C. Waterfall, M. S. Beck
Affiliated:
Process Tomography Group, University of Manchester Institute of Science and Technology
Pages: 12
Event:
International Fuels & Lubricants Meeting & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1994 Transactions: Journal of Fuels and Lubricants-V103-4
Related Topics:
Combustion and combustion processes
Combustion chambers
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