Oxygen sensing device

Details Oxygen sensing device Oxygen sensing device

1980-06-12

1982-11-02

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

G01N 2758

Patent

active

043572235

ABSTRACT:
An oxygen sensing device in which a tubular solid electrolyte, one end of which is closed, is applied with electrodes on the outer and inner surfaces, the closed end side of the solid electrolyte is exposed to combustion gases exhausted from internal combustion engines, the inner electrode and the outer electrode are contacted with ambient air and the combustion gases respectively, is characterized in that an inner surface of a tubular solid electrolyte is constructed of a wide opening portion, a first diameter reducing portion connecting to said wide opening portion, an intermediate wide opening portion having a uniform diameter which is smaller than the wide opening portion, and connecting to the first diameter reducing portion, a second diameter reducing portion connecting to the intermediate wide opening portion and a narrow opening portion connecting to the second diameter reducing portion which extends to the closed end.

REFERENCES:
patent: 3841987 (1974-10-01), Friese et al.
patent: 4076608 (1978-02-01), Fujishiro et al.
patent: 4253302 (1981-03-01), Asano et al.

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