LUBRICATION SYSTEM


  1. CONSTRUCTION


    1. Piston jets (oil pipe sub-assembly) are provided for the cylinder block sub-assembly. By injecting oil to the inside of the cylinders, the piston, small end of the connecting rod and piston ring are lubricated, thereby achieving enhanced piston durability through decreased friction and suppressed temperature increase and preventing knocking.

    2. A piston jet control system which can control the piston jet engine oil injection is used.

      A01MQQHC01
      *1 Cylinder Block Sub-assembly *2 Piston Jet (Oil Pipe Sub-assembly)

  2. OPERATION


    1. The engine oil injection from the piston jets is controlled by the supply and cutting off of engine oil to the piston jet based on the oil pressure switching valve assembly being turned on and off via the ECM.

    2. When Injection is Stopped


      1. Engine oil is supplied to the back of the relief valve and the supply of engine oil to the piston jet is cut off.

        A01MQRGC04
        *1 Relief Valve *2 Oil Pressure Switching Valve Assembly
        *3 ECM (Operation Signal) *4 Piston Jet (Oil Pipe Sub-assembly)
        *a Engine Oil (from Oil Pump) - -

    3. During Injection


      1. The supply of engine oil to the back of the relieve valve is stopped, the relief valve is opened, engine oil is supplied to the piston jet, and the piston jet injects the engine oil.

        A01MQPXC04
        *1 Relief Valve *2 Oil Pressure Switching Valve Assembly
        *3 ECM (Operation Signal) *4 Piston Jet (Oil Pipe Sub-assembly)
        *a Engine Oil (from Oil Pump) *b Drain