An In Situ Determination of the Thermal Properties of Gombustion-Chamber Deposits 820071
A technique for making a radiometric measurement of the deposit surface temperature in a methane-fired engine was developed. The wavelength region between 3.5 and 4.1 μm was investigated. It was determined that while the combustion gases were relatively transparent, the surface temperature measurements would contain some gas radiation. A method of averaging the measurements of many cycles and correcting these data for the gas radiation was developed.
Time-averaged surface temperature was used in a steady-state heat transfer analysis to determine deposit thermal conductivity. Deposit thermal diffusivity was determined from a transient experiment in which the engine’s ignition system was turned off and the cooling response of the deposit and wall were measured.
Citation: Anderson, C., Uyehara, O., and Myers, P., "An In Situ Determination of the Thermal Properties of Gombustion-Chamber Deposits," SAE Technical Paper 820071, 1982, https://doi.org/10.4271/820071. Download Citation
Author(s):
C. L Anderson, O. A. Uyehara, P. S. Myers
Affiliated:
Michigan Technological Univ, Univ. of Wisconsin
Pages: 14
Event:
SAE International Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1982 Transactions-V91-A
Related Topics:
Ignition systems
Conductivity
Heat transfer
Radiation
Combustion and combustion processes
Gases
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