ECD SYSTEM


  1. FUNCTION


    1. The ECM calculates the target injection pressure (25 to 180 MPa) based on the engine operating conditions, which include the signals from the accelerator pedal position sensor and the crank position sensor. In order to control the fuel pressure, the SCV of the supply pump controls the pumping volume. Also, when the pressure is extremely high, when sudden deceleration occurs, or when the engine is stopped, the pressure discharge valve installed on the common-rail controls the discharge volume. This ensures that the pressure detected by the fuel pressure sensor matches the target injection pressure.

      A00XRPLE05