Oxygen sensing device

Details Oxygen sensing device Oxygen sensing device

G - Physics

01

N

324/25

G01N 33/00 (2006.01)

Patent

CA 1140632

Abstract of the Disclosure An oxygen sensing device in which a tubular solid electro- lyte, 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 connection to the intermediate wide opening portion and a narrow opening potion connecting to the second diameter reducing portion which extends to the closed end.

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