SFI SYSTEM


  1. CONSTRUCTION


    1. A planar type air fuel ratio sensor is used.

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

      B0082OYC01
      *1 Air Fuel Ratio Sensor (Planar Type) - -
      *a Cover *b Alumina
      *c Platinum Electrode *d Sensor Element (Zirconia)
      *e Heater *f Atmosphere
      *g Coating (Ceramic) - -

    3. As illustrated below, a conventional heated oxygen sensor is characterized by a sudden change in its output voltage at the threshold of the stoichiometric air fuel ratio (14.7:1). In contrast, the air fuel ratio sensor data is approximately proportionate to the existing air fuel ratio. The air fuel ratio sensor converts the oxygen density to current and sends it to the ECM. As a result, the detection precision of the air fuel ratio has been improved. The air fuel ratio sensor data can be viewed using the Global TechStream (GTS).

      B0082OVE78