Sensor for measuring air-fuel ratio

Details Sensor for measuring air-fuel ratio Sensor for measuring air-fuel ratio

1981-12-17

1984-11-27

Kaplan, G. L.

Electrical resistors

Resistance value responsive to a condition

Gas, vapor, or moisture absorbing or collecting

G01N 2712

Patent

active

044853696

ABSTRACT:
A sensor for measuring air-fuel ratio, comprising a porous oxygen ion-conductive solid electrolyte sintered body having a pellet-like shape, and two heat-resistant metal wires embedded therein at a given interval, can measure accurately and easily the air-fuel ratio of a gas in a lean side, wherein the air-fuel ratio is not less than the theoretical air-fuel ratio.
The solid electrolyte may be either zirconia or thoria containing as a stabilizer yttria, calcia or magnesia and having an apparent porosity of from about 5% to about 40%.

REFERENCES:
patent: 4147513 (1979-04-01), Bienkowski et al.
patent: 4224113 (1980-09-01), Kimura et al.
patent: 4233033 (1980-11-01), Eifler et al.
patent: 4303613 (1981-12-01), Yasuda et al.
patent: 4322383 (1982-03-01), Yasuda et al.
patent: 4322968 (1982-04-01), Takami et al.
patent: 4327054 (1982-04-01), Yasuda et al.

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