Titania Element Type Oxygen Sensor

This oxygen sensor consists of a semiconductor element made of titanium dioxide (TiO2, which is, like ZrO2, a kind of ceramic). This sensor uses a thick film type titania element formed on the front end of a laminated substrate to detect the oxygen concentration in the exhaust gas.

Titania Sensor Resistance i/s.

Theoretical Air-Fuel Ratio



Oxygen <— Sensor Resistance

Low Oxygen Content

High Oxygen Content



Richer O A";Fuel Leaner Ratio


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