FUEL SYSTEM


  1. CONSTRUCTION


    1. High-pressure, single slit-nozzle type fuel injector assemblies are used in conjunction with the adoption of the Direct injection 4-stroke gasoline engine Superior version (D-4S) system.

    2. Each injector, based on signals from the ECM, measures the flow of high-pressure fuel. The fuel is injected as a fine-atomized mist in a fan shaped pattern, directly to the combustion chamber, via a slit type nozzle.

    3. An insulator is used in the area in which the injector comes in contact with the cylinder head, and a Teflon shaft seal is used to seal the injector against the combustion pressure in the cylinders. This is employed in order to reduce vibration and noise and to enhance sealing performance.

    4. An O-ring and a back-up ring are provided for the fuel injector assembly (for direct injection). This reduces the transmission of operating sounds of the fuel injector assembly (for direct injection), enhances quiet operation and ensures the sealing performance of the joint areas.

    5. The injectors are actuated by the EDU using high-voltage and a constant-current control based on instructions from the ECM. This control allows the injectors to inject high-pressure fuel in a short time frame.

      A0111ELC02
      *1 O-ring *2 Backup Ring
      *3 Insulator *4 Teflon Shaft Seal
      *a Fuel Injector Assembly (for Direct Injection) Cross Section *b Injector Nozzle