ENGINE UNIT


  1. CONSTRUCTION


    1. Intake and exhaust efficiency has been 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 or oscillating cam and the areas (No. 1 valve rocker arm sub-assembly) 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 VALVEMATIC system which effects continuously variable control of the amount of intake valve lift and intake valve action angle, and the Dual Variable Valve Timing-intelligent (Dual VVT-i) system that controls the intake and exhaust valve timing. Through coordinated control, these systems optimally control the valve timing and amount of intake valve lift in accordance with the driving conditions. This achieves lower fuel consumption, higher engine performance, and reduced exhaust emissions.

      A00XRK3C01
      *1 Chain Sub-assembly *2 Exhaust VVT-i Controller (Camshaft Timing Exhaust Gear Assembly)
      *3 No. 1 Chain Tensioner Assembly *4 Chain Tensioner Slipper
      *5 Intake VVT-i Controller (Camshaft Timing Gear Assembly) *6 No. 1 Chain Vibration Damper
      *7 Exhaust Camshaft (No. 2 Camshaft) *8 Intake Camshaft (Camshaft)
      *9 Continuously Variable Valve Lift Controller Assembly *10 VALVEMATIC Mechanism
      *11 Exhaust Valve *12 Intake Valve
      *13 No. 1 Valve Rocker Arm Sub-assembly *14 Valve Lash Adjuster Assembly
      *15 Valve - -

    6. Valve Timing

      Intake Camshaft (Camshaft) Open -14° to 25° BTDC
      Close -60° to 70° ABDC
      Exhaust Camshaft (No. 2 Camshaft) Open 65° to 30° BBDC
      Close -1° to 34° ATDC
      A00XRLYC02
      *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