SFI SYSTEM


  1. OPERATION


    1. The fuel pump control ECU assembly receives an operation request signal (duty signal) from the ECM assembly and operates the fuel pump.

    2. Three-phase Pulse Width Modulation (PWM) control is used for the fuel pump control ECU assembly to steplessly adjust the rotation of the fuel pump speed. Due to this control, the fuel pump can be operated at the optimal speed for the required fuel flow, reducing power consumption and improving fuel efficiency.

    3. In addition to when the engine is stopped, the fuel pump is stopped when any of the Supplemental Restraint System (SRS) airbags have deployed, minimizing fuel leakage.

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