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. This engine uses valve rocker arm sub-assemblies with built-in needle bearings. This reduces the friction that occurs between the cams and the valve rocker arm sub-assemblies when the valves are pushed down, thus improving fuel economy.

    3. A valve lash adjuster assembly, which maintains a constant zero valve clearance through the use of oil pressure and spring force, is used.

    4. 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 chain.

    5. A valve spring (inner compression spring), whose upper portion is shaped like a beehive, is used to reduce inertial mass.

    6. This engine uses the Dual Variable Valve Timing-intelligent (Dual VVT-i) system which controls the intake camshafts and exhaust camshafts to provide optimal valve timing in accordance with driving conditions. As a result, lower fuel consumption, higher engine performance, and fewer exhaust emissions have been achieved.

      A0009UVC01
      *1 Secondary Timing Chain *2 Primary Timing Chain
      *3 No. 4 Camshaft (Exhaust) *4 No. 3 Camshaft (Intake)
      *5 No. 1 Camshaft (Intake) *6 No. 2 Camshaft (Exhaust)
      *7 Valve Rocker Arm Sub-assembly *8 Valve Lash Adjuster Assembly
      *9 Valve Spring (Inner Compression Spring) *10 Valve
      A0009SME02