СИСТЕМА ECD


  1. FUNCTION


    1. The opening of the diesel throttle valve is controlled by the ECM in accordance with the engine conditions.

    2. Diesel throttle control has following functions:


      • A function that closes the diesel throttle valve to reduce vibration and noise when the engine is being stopped.

      • A function that regulates the volume of intake air to maintain the exhaust gas temperature required to regenerate the Diesel Particulate Filter (DPF) catalyst.

      • A function that prevents the engine speed from increasing excessively when combustion materials other than those introduced during normal fuel injection have gotten into the cylinder.*

        Tech Tips

        *: For example, if engine oil flows from the turbocharger sub-assembly to the cylinder due to damage to the bearing.