ENGINE UNIT


  1. CONSTRUCTION


    1. Intake and exhaust efficiency has been increased due to larger total port areas.

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

    3. Valve lash adjuster assemblies, which maintain a constant zero valve clearance through the use of oil pressure and spring force, are used.

    4. The intake camshaft (camshaft) and exhaust camshaft (No. 2 camshaft) are driven by a chain sub-assembly.

    5. This engine uses a Dual Variable Valve Timing-intelligent (Dual VVT-i) system which controls the intake camshaft (camshaft) and exhaust camshaft (No. 2 camshaft) to provide optimal valve timing according to driving conditions. With this, lower fuel consumption, higher engine performance, and reduced exhaust emissions have been achieved.

      A00XRPBC02
      *1 Intake VVT-i Controller (Camshaft Timing Gear Assembly) *2 No. 2 Chain Vibration Damper
      *3 Exhaust VVT-i Controller (Camshaft Timing Exhaust Gear Assembly) *4 Intake Camshaft (Camshaft)
      *5 Exhaust Camshaft (No. 2 Camshaft) *6 No. 1 Valve Rocker Arm Sub-assembly
      *7 Valve Lash Adjuster Assembly *8 Valve
      *9 Exhaust Valve *10 Intake Valve
      *11 Timing Chain Guide *12 Timing Chain Tension Arm
      *13 No. 1 Chain Tensioner Assembly - -

    6. Valve Timing

      Intake Camshaft (Camshaft) Open -10° to 30° BTDC
      Close 69° to 29° ABDC
      Exhaust Camshaft (No. 2 Camshaft) Open 48° to 3° BBDC
      Close 7° to 52° ATDC
      A00XR8HC02
      *a VVT-i Operation Range (Intake) *b VVT-i Operation Range (Exhaust)
      *c TDC *d BDC
      A00XRCH Exhaust Valve Opening Angle A00XREL Intake Valve Opening Angle