ENGINE UNIT


  1. CONSTRUCTION


    1. The cylinder head, which is made of aluminum alloy, contains a pentroof type combustion chamber. The spark plug has been located in the center of the combustion chamber in order to improve the engine's anti-knocking performance.

    2. The angle between the intake and exhaust valves is narrowed and set at 22.85° to permit a compact cylinder head.

    3. A cross-flow intake and exhaust layout is used to improve intake and exhaust efficiency.

    4. A taper squish combustion chamber is used to improve anti-knocking performance and intake efficiency. In addition, engine performance and fuel economy have been improved.

    5. Long nozzle type fuel injector assemblies are installed in the cylinder head to reduce the distance from the fuel injector to the intake valve, thus preventing the fuel from adhering to the intake port walls, and reducing exhaust emissions.

    6. The routing of the water jacket in the cylinder head has been optimized to achieve higher cooling performance.

    7. An air injection port, which directs the air from the air pump assembly to the exhaust port of each cylinder, has been provided on top of the exhaust port on the models with air injection system.

      A01KWVNC01
      *A Models with Air Injection System - -
      *1 Camshaft Bearing Cap *2 Cylinder Head Sub-assembly
      *3 Fuel Injector Assembly - -
      *a A - A Cross Section *b B - B Cross Section
      *c Exhaust Side *d Taper Squish
      *e Intake Side *f Air Injection Port
      *g Spark Plug Hole *h Top View
      B0020NM Water Jacket - -