LUBRICATION SYSTEM GENERAL GENERAL

  1. OUTLINE

    1. The lubrication circuit is fully pressurized and all oil passes through an oil filter.

    2. The crankshaft drives a trochoid gear type oil pump. The oil pump fits compactly inside the timing chain or belt cover sub-assembly.

    3. This engine has an oil return system in which the oil is force-fed to the upper cylinder head sub-assembly and returns to the oil pan through the oil return holes in the cylinder head sub-assembly and cylinder block sub-assembly.

    4. The camshaft timing oil control valve assemblies regulate the oil pressure and then supply oil into each VVT-i controller (camshaft timing sprocket assembly and camshaft timing exhaust gear assembly).

    5. The No. 1 oil nozzle sub-assembly is employed in the piston cooling and lubrication.

      W140667C01

      *1

      Intake VVT-i Controller (Camshaft Timing Sprocket Assembly)

      *2

      Camshaft Timing Oil Control Valve Assembly (Exhaust)

      *3

      No. 1 Oil Nozzle Sub-assembly

      *4

      Oil Strainer Sub-assembly

      *5

      Oil Pump

      *6

      Oil Filter

      *7

      Exhaust VVT-i Controller (Camshaft Timing Exhaust Gear Assembly)

      *8

      Camshaft Timing Oil Control Valve Assembly (Intake)