SFI SYSTEM


  1. CONSTRUCTION


    1. The basic construction of the air fuel ratio sensor and No. 2 air fuel ratio sensor* is the same. However, they are divided into the cup type and the planar type, in accordance with the different types of heater construction that are used.

      *: EURO VId-TEMP and CHINA VI models

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

      Figure 1. Air Fuel Ratio Sensor

      B007WJUC02
      *1 Air Fuel Ratio Sensor (Planar Type) *2 Cover
      *3 Alumina *4 Platinum Electrode
      *5 Sensor Element (Zirconia) *6 Heater
      *a Atmosphere *b Coating (Ceramic)

      Figure 2. Output Characteristics of the Air Fuel Ratio Sensor

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    3. EURO VId-TEMP and CHINA VI Models


      1. The cup type No. 2 air fuel ratio sensor contains a sensor element that surrounds the heater.

        Figure 3. No. 2 Air Fuel Ratio Sensor

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        *1 No. 2 Air Fuel Ratio Sensor (Cup Type) *2 Cover
        *3 Heater *4 Platinum Electrode
        *5 Sensor Element (Zirconia) - -
        *a Atmosphere *b Coating (Ceramic)

        Figure 4. Output Characteristics of the No. 2 Air Fuel Ratio Sensor

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