ENGINE UNIT


  1. CONSTRUCTION


    1. A cylinder head made of aluminum alloy (AlSi7MgCu0.5) is used.

    2. A camshaft housing sub-assembly is located in the cylinder head sub-assembly. The camshafts are supported in their own camshaft housing sub-assembly. The camshaft housing sub-assembly is made from the aluminum-silicon alloy (AlSi9Cu3(Fe)).

      A01QFH4C01
      *1 Cylinder Head *2 No. 2 Camshaft (Exhaust Camshaft)
      *3 Camshaft Housing Sub-assembly *4 Valve Rocker Arm Sub-assembly
      *5 Valve Lash Adjuster Assembly *6 Valve Spring
      *7 Valve Guide Bushing *8 Exhaust Valve
      *9 Intake Valve *10 Glow Plug Assembly
      *11 Camshaft (Intake Camshaft) - -
      *a Cross-section *b Exhaust Port
      *c Intake Port - -

    3. This engine has 4 valves per cylinder. By using a 4-valve cylinder head, the injector can be positioned in the center of the cylinder. As a result, high output and low exhaust emissions have been achieved.

    4. This engine forms a flat combustion chamber roof. The intake and exhaust valves are arranged parallel to each other.

    5. A distinction is made between the intake ports of the swirl port and tangential port, which provides for optimum mixture preparation and cylinder charge. The swirl and tangential ports are already separated in the intake manifold and are routed separately from each other in the cylinder head. The exhaust ports for each cylinder are already joined in the cylinder head so that only one exhaust port feeds into the exhaust manifold. The swirl port generates a swirl in the cylinder and the tangential port maintains the optimal cylinder charge.

      A01QFRJC01
      *1 Exhaust Valve *2 Intake Valve
      *3 Glow Plug Assembly *4 Injector Assembly
      *a Exhaust Port *b Tangential Port
      *c Swirl Port - -

    6. This engine uses a cylinder head with cross-flow cooling, where the coolant flows from the hot exhaust side to the cool intake side. This has the advantage of providing uniform heat distribution in the overall cylinder head. It also prevents additional pressure losses in the cooling circuit.