ENGINE UNIT


  1. CONSTRUCTION


    1. A VVT-i controller (camshaft timing gear assembly or camshaft timing exhaust gear assembly) consists of a housing driven by the chain sub-assembly and a vane coupled with the intake camshaft (camshaft) or exhaust camshaft (No. 2 camshaft).

    2. Both the camshaft timing gear assembly and camshaft timing exhaust gear assembly have a 4-blade vane.

    3. The oil pressure sent from the advanced or retarded side path at the intake camshaft (camshaft) and exhaust camshaft (No. 2 camshaft) causes rotation in the camshaft timing gear assembly vane circumferential direction to allow for continuous variation of the intake and exhaust value timing.

    4. When the engine is stopped, a lock pin locks the intake camshaft (camshaft) at the most retarded position and the exhaust camshaft (No. 2 camshaft) at the most advanced position, to ensure that the engine starts properly.

    5. An advance assist spring is provided on the exhaust side camshaft timing gear assembly. This spring applies torque in the advance direction when the engine is stopped, thus ensuring the engagement of the lock pin.

      A01O7BQC03
      *A Intake Side *B Exhaust Side
      *1 Housing *2 Vane (Fixed on Intake Camshaft)
      *3 Lock Pin *4 Sprocket
      *5 Intake Camshaft (Camshaft) *6 Advance Assist Spring
      *7 Vane (Fixed on Exhaust Camshaft) *8 Exhaust Camshaft (No. 2 Camshaft)
      *a At a Stop *b In Operation
      B008JPG Oil Pressure - -