SFI SYSTEM


  1. FUNCTION


    1. The ECM turns the oil pressure switching valve assembly on and off based on the ON-OFF map in accordance with the engine coolant temperature and engine load to control the oil supplied to the piston jet (No. 1 oil nozzle sub-assembly).

    2. At low engine coolant temperatures, fuel dilution reduction at low temperatures and improved piston temperature increase during engine start enhance fuel economy to stop oil injection from the piston jet (No. 1 oil nozzle sub-assembly).

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      Figure 1. Engine Oil Injection Range

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