Info

14.7

Air-fuel Ratio d13n11

2) Construction

• The basic construction of the air-fuel ratio sensor and heated oxygen sensor is the same. However, they are divided into the cup type and the planar type, according to the different types of heater construction that are used.

The cup type sensor contains a sensor element that surrounds a heater.

The planar type sensor uses alumina, which excels in heat conductivity and insulation, to integrate a sensor element with a heater, thus realizing the excellent warm-up performance of the sensor.

Alumina

Dilation Layer

Atmosphere

Dilation Layer

Heater

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