Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1978-08-28
1979-08-21
Swisher, S. Clement
Measuring and testing
Gas analysis
Moisture content or vapor pressure
73 35, 73339A, G01K 102
Patent
active
041648676
ABSTRACT:
The bulk temperature of the gas in a piston engine during combustion is determined by detecting the high frequency pressure oscillation in the combustion chamber operating the engine to produce knock and measuring the frequency of the lowest frequency mode of the high frequency knock signal. The frequency or inversely the period of that signal is a function of the gas temperature.
REFERENCES:
patent: 3201972 (1965-08-01), Krause
patent: 3214977 (1965-11-01), Apfel
patent: 3403509 (1968-10-01), Eastman
patent: 3487640 (1970-01-01), Wostl et al.
patent: 3618385 (1971-11-01), Kelley et al.
Chung Jing-Yau
Feldmaier Douglas A.
Hamburg James A.
Hickling Robert
General Motors Corporation
Hill Warren D.
Swisher S. Clement
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