Chemistry: electrical and wave energy – Processes and products
Patent
1978-06-21
1980-02-19
Tung, T.
Chemistry: electrical and wave energy
Processes and products
204195S, 123119E, G01N 2746
Patent
active
041893557
ABSTRACT:
A sensor comprises a layer of an oxygen ion conductive solid electrolyte such as stabilized zirconia, two electrode layers of a catalytic metal such as platinum formed porously on both sides of the electrolyte, only one of them formed on first side of the electrolyte layer being directly exposable to an exhaust gas stream, and a gas passage arranged to allow the exhaust gas to contact the other side of the electrolyte layer with a time lag behind the contact of the gas stream with the first side. A fluctuation in the air/fuel ratio of an air-fuel mixture fed to the engine across the stoichiometric ratio can be detected by this sensor since the fluctuation and the aforementioned time lag cause a difference between oxygen partial pressure on one side of the electrolyte layer and that on the other side, resulting in development of an output voltage of the sensor.
REFERENCES:
patent: 3400054 (1968-09-01), Ruka et al.
patent: 3691023 (1972-09-01), Ruka et al.
patent: 3819500 (1974-06-01), Van Esdonk et al.
patent: 3981785 (1976-09-01), Sandler
patent: 4005001 (1977-01-01), Pebler
Fujishiro Takeshi
Kita Toru
Nissan Motor Company Limited
Tung T.
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