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 larger total port areas.

    2. This engine uses No. 1 valve rocker arm sub-assemblies with built-in needle bearings. This reduces the friction that occurs between the cams and the No. 1 valve rocker arm sub-assemblies that push the valves down, thus improving fuel economy.

    3. Fixed cylinder head valve rocker arm pivots and No. 1 valve rocker arm sub-assemblies are utilized to tolerate the increased maximum engine speed.

    4. Shims mounted on the ends of the valve stems are used for adjustment of valve clearance.

    5. As a result of adopting titanium intake and exhaust valves, high valve lift and increased engine speed are possible, improving output performance.

    6. To ensure highly accurate valve timing, separate chain sub-assemblies are driven by the crankshaft in order to rotate the intake camshafts of the left and right banks. The exhaust camshafts are driven by the intake camshaft of the respective bank via a No. 2 chain sub-assembly.

    7. Cast iron camshafts are used.

    8. This engine has a Dual Variable Valve Timing-intelligent (Dual VVT-i) system which controls the intake and exhaust camshafts to provide optimal valve timing according to driving conditions. With this adoption, lower fuel consumption, higher engine performance, and fewer exhaust emissions have been achieved.

      A01QE14C01
      *1 Chain Sub-assembly *2 No. 2 Chain Sub-assembly
      *3 No. 2 Camshaft (Exhaust) *4 No. 1 Camshaft (Intake)
      *5 No. 3 Camshaft Sub-assembly (Intake) *6 No. 4 Camshaft Sub-assembly (Exhaust)
      *7 No. 1 Valve Rocker Arm Sub-assembly *8 Cylinder Head Valve Rocker Arm Pivot
      *9 Compression Spring *10 Valve Guide Bush
      *11 Cylinder Head Valve Spring Seat *12 Valve
      *13 Cylinder Head Valve Spring Retainer *14 Cylinder Head Valve Spring Retainer Lock
      *15 Valve Adjusting Shim - -
      Valve Timing
      Intake Valve Open -24° to 32° BTDC
      Close 100° to 44° ABDC
      Exhaust Valve Open 37° to 67° BBDC
      Close 27° to -3° ATDC
      A01QDK9C01
      *a VVT-iE Operation Range (Intake) *b VVT-i Operation Range (Exhaust)
      *c TDC *d BDC
      B002AQQ Exhaust Valve Opening Angle B002AUN Intake Valve Opening Angle