Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
Patent
1976-12-13
1978-07-18
Tung, T.
Chemistry: electrical and wave energy
Processes and products
Vacuum arc discharge coating
123119E, G01N 2746
Patent
active
041014030
ABSTRACT:
A sensor comprising a plate of an oxygen ion conductive solid electrolyte such as stabilized zirconia, 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 electrode 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.
REFERENCES:
patent: 3691023 (1972-09-01), Ruka et al.
patent: 3841987 (1974-10-01), Friese et al.
patent: 3935089 (1976-01-01), Togawa et al.
patent: 3981785 (1976-09-01), Sandler
patent: 4005001 (1977-01-01), Pebler
Fujishiro Takeshi
Kita Toru
Nissan Motor Company Limited
Tung T.
LandOfFree
Sensor for detecting variation in oxygen concentration in gas does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sensor for detecting variation in oxygen concentration in gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sensor for detecting variation in oxygen concentration in gas will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-337753