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.

      A01FJONC01
      *1 Air Fuel Ratio Sensor (Planar Type) - -
      *a Cover *b Alumina
      *c Platinum Electrode *d Coating (Ceramic)
      *e Heater *f Sensor Element (Zirconia)
      *g Atmosphere - -

    3. As illustrated below, the 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 into a voltage signal and sends it to the ECM. As a result, the detection precision of the air fuel ratio has been improved. Air fuel ratio sensor data can be viewed using the Global TechStream (GTS).

      A01FJDWE77