EMISSION CONTROL SYSTEM(w/o Canister Pump Module)


  1. OUTLINE


    1. Exhaust Emission Control System


      1. Three-Way Catalytic converters (TWCs) are used in order to reduce exhaust emissions.

      2. The ECM performs air fuel ratio feedback control based on signals from the air fuel ratio sensor and the heated oxygen sensor, and controls the fuel injection amount so that the air fuel ratio comes close to the stoichiometric air fuel ratio, at which the highest purifying efficiency of CO, HC and NOx is obtained.

      3. Air fuel ratio sensor and heated oxygen sensor heater control, which maintains the temperature of the respective sensors at an appropriate level, is used to improve the detection accuracy of oxygen concentration in the exhaust gas.

    2. Evaporative Emission Control System


      1. The evaporative emission control system prevents the fuel vapor that is created in the fuel tank assembly from being released directly into the atmosphere.

      2. The canister stores the fuel vapor that has been created in the fuel tank assembly.

      3. This system consists of a purge VSV, canister and ECM.

      4. The ECM controls the purge VSV in accordance with the driving conditions in order to direct the fuel vapor into the engine, where it is burned.

    3. Gasoline Particulate Filter (GPF) System


      1. A Gasoline Particulate Filter (GPF) system is used for the models compliant with EURO VId emission regulations to purify Particulate Matter (PM) contained in exhaust gas.