PURPOSE: To facilitate handling and manufacture, etc. of a detector, by installing on an one-end closed cylinder provided with gas dispersion hole of dispersing layer on this closed end an oxygen ion penetrating solid electrolyte which divides said closed end side and non-closed end side.
CONSTITUTION: An air-fuel ratio detector is provided with circular ceramic cylinder 1, gas dispersion hole 2 located on the closed and 1' of this cylinder 1 and gas dispersion hole 2 equipped with electrodes 4a, 4b, 5a, 5b. These electrodes are attached in semi-circular arrangement on both surfaces of a oxygen ion penetrating solid electrolyte 3 in circular disk form. In this case, the oxygen ion penetrating solid electrolyte 3 is so arranged that the closed end side 1' and non-closed end side are divided. By this construction, handling and manufacture, etc. of the detector is not only facilitated, but also better control of engine can be realized.
KAMO TAKASHI
IGAI TADAYOSHI
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