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Device for quickly sensing the amount of O2 in a combustion product gasA sensing device comprising an O2 sensor, a pump, a compressor, and a heater is provided to quickly sense the amount of O2 in a combustion product gas. A sample of the combustion product gas is compressed to a pressure slightly above one atmosphere by the compressor. Next, the heater heats the sample between 800 C and 900 C. Next, the pump causes the sample to be flushed against the electrode located in O2 sensor 6000 to 10,000 times per second. Reference air at approximately one atmosphere is provided to the electrode of O2 sensor. Accordingly, the O2 sensor produces a voltage which is proportional to the amount of oxygen in the combustion product gas. This voltage may be used to control the amount of O2 entering into the combustion chamber which produces the combustion product gas.
Document ID
19900012709
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Singh, Jag J. (NASA Langley Research Center Hampton, VA, United States)
Davis, William T. (NASA Langley Research Center Hampton, VA, United States)
Puster, Richard L. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 14, 2013
Publication Date
March 27, 1990
Subject Category
Instrumentation And Photography
Accession Number
90N22025
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-LAR-13816-1|US-PATENT-4,911,890
Patent Application
US-PATENT-APPL-SN-165945

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