Title: Thermoelectric exhaust gas sensor

Abstract: An extremely high output and durable thermoelectric sensor for detecting the quantitative content of combustibles in an exhaust gas. Thick film coatings of lithia-nickel and doped titanium dioxide provide two thermocouple junctions on a ceramic substrate. An exhaust gas oxidation catalyst adjacent one of the junctions provides a junction temperature differential when the ceramic body is exposed to exhaust gas flow. The output difference between the two junctions is proportional to the concentration of residual combustibles in the exhaust gas.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Micheli, Adolph L. (Mount Clemens, MI, US)
Dungan, Dennis F. (Mount Clemens, MI, US)

Application Number: 673649
Filing Date: 1976-04-05
Publication_date: 1977-06-14
Assignee: General Motors Corporation (Detroit, MI)
Primary Class(es): 422/108 60/276, 136/201, 136/225, 136/236.1, 136/239, 374/36, 374/144, 422/168
Other Classes:
US Patent Ref:

2904995	Sep, 1959	Obermaier	136/225.
2994219	Aug, 1961	Schaschl	136/225.
3906721	Sep, 1975	Micheli et al.	60/276.
3913058	Oct, 1975	Nishio	338/28.

Other Refs:
Primary Examiner: Behrend, Harvey E.
Assistant Examiner:
Attorney: Wallace; Robert J.