Hydrocarbon concentration sensor for use in engine exhaust gas

Details Hydrocarbon concentration sensor for use in engine exhaust gas Hydrocarbon concentration sensor for use in engine exhaust gas

1975-08-07

1977-07-05

Queisser, Richard C.

Measuring and testing

Gas analysis

Gas chromatography

23254E, 338 34, G01N 2712

Patent

active

040331695

ABSTRACT:
A sensor having an n-type oxide semiconductor layer and a p-type oxide semiconductor layer spaced from and electrically connected in series with each other and two fixed resistors connected in series with each other, wherein the two semiconductor layers and two resistors are connected to construct a four-arm bridge.

REFERENCES:
patent: 2768069 (1956-10-01), Thompson
patent: 3200011 (1965-08-01), Baker
patent: 3586486 (1971-06-01), Kim et al.
patent: 3610023 (1971-10-01), Ageikin et al.
patent: 3687631 (1972-08-01), Zegel
patent: 3695848 (1972-10-01), Taguchi
patent: 3699803 (1972-10-01), Sumi et al.
patent: 3751968 (1973-08-01), Loh et al.
patent: 3864628 (1975-02-01), Klass et al.

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