Air Fuel Ratio Sensor
Lean spectrum precise detection
Air fuel ratio sensor, also known as "AF sensor" and "AFR sensor", is an advanced 4 wire oxygen sensor with the same function as the conventional oxygen (O2) sensor, commonly applicated on the Japanese-makd vehicle since 2000.
AF ratio sensor is particularly sensitive to the lean spectrum of air to fuel ratio. With continuous sampling of the oxygen content within the exhaust gas, air fuel ratio sensors feed its reading as how lean these oxygen contents are, then vehicle’s ECU can manage precise fuel injection to sustain ideal air to fuel ratio.
Ceradex’s patented single-cell air-fuel planar technology enables our af ratio sensors to achieve systematic oxygen pumping that allows higher detection accuracy in a linear format. Contact us if you have any questions.