EMISSION CONTROL SYSTEM


  1. FUNCTION OF MAIN COMPONENTS


    1. The main components of the exhaust emission control system are as follows:

      Component Function
      TWC Reduces emissions by oxidation of CO and HC in exhaust gas and reduction of NOx.
      Oxygen Sensor Detects the oxygen concentration in the exhaust emission by measuring the electromotive force which is generated in the sensor itself.
      Air Fuel Ratio Sensor Is used to determine the concentration of oxygen remaining in the exhaust gas, and has a characteristic where its output is proportional to the air fuel ratio.
      No. 1 Turbo Pressure Sensor Uses built-in semiconductors to detect the intake manifold pressure.
      ECM Controls the volume of fuel consumed based primarily on the signal from the air fuel ratio sensor, with minor corrections based on the signal from the oxygen sensor. This control optimizes the air fuel ratio.