ENGINE UNIT


  1. CONSTRUCTION


    1. Each cylinder of this engine has 2 intake valves and 2 exhaust valves. Intake and exhaust efficiency is increased due to the larger total port areas.

    2. The valves are directly opened and closed by 4 camshafts via the valve lifter.

    3. The intake camshafts are driven by the crankshaft via the primary timing chain. The exhaust camshafts are each driven by the intake camshaft of their respective bank via a secondary timing chain.

    4. The Variable Valve Timing-intelligent (VVT-i) system used for the intake camshaft achieves excellent fuel economy, higher engine performance and reduction of exhaust emissions.

      B002NILC01
      *1 Secondary Chain Tensioner (No. 2 Chain Tensioner Assembly) *2 Camshaft Timing Gear or Sprocket
      *3 Primary Timing Chain (No. 1 Timing Chain Sub-assembly) *4 Primary Chain Tensioner (No. 1 Chain Tensioner Assembly)
      *5 Chain Tensioner Slipper *6 Idle Sprocket Assembly
      *7 Crankshaft *8 Crankshaft Timing Gear or Sprocket
      *9 No. 1 Chain Vibration Damper *10 VVT-i Controller (Camshaft Timing Gear Assembly)
      *11 No. 4 Camshaft (Exhaust) *12 Secondary Chain Tensioner (No. 3 Chain Tensioner Assembly)
      *13 No. 3 Camshaft (Intake) *14 Secondary Timing Chain (No. 2 Timing Chain Sub-assembly)
      *15 No. 1 Camshaft (Intake) *16 No. 2 Camshaft (Exhaust)
      *17 No. 2 Chain Vibration Damper - -

      Figure 1. Valve Timing

      B002N1JE01