G - Physics – 01 – N
Patent
G - Physics
01
N
324/25
G01N 27/12 (2006.01)
Patent
CA 1058706
Abstract of the Disclosure A sensor comprising a plate of an oxygen ion conductive solid electrolyte such as stabilized zir- conia, two porous electrode layers of a catalytic metal such as platinum formed on both sides of the electrolyte plate, and two porous ceramic coatings formed respectively on the two electrode layers, wherein both sides of the electrolyte plate are exposable to a gas subject to measurement through the electrode layer and the coating formed on each of them, but the total resistance offered by one of the elec- trode layers and the coating thereon to the permeation of the gas therethrough is different from that offered by the other electrode layer and coating, so that the gas contacts one side of the electrolyte plate with a time lag behind the contact of the gas with the other side of the plate. The sensor is useful for detecting a fluctuation in the air/fuel ratio of an air-fuel mixture fed to an internal combustion engine across the stoichiometric ratio by exposure to the exhaust gas since the fluctuation and the aforementioned time lag causes the sensor to develop an output voltage. - 1 -
268603
Fujishiro Takeshi
Kita Toru
Na
Nissan Motor Co. Ltd.
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