CYLINDER HEAD [SKYACTIV-D 1.5]SM2759773
CYLINDER HEAD [SKYACTIV-D 1.5]

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Purpose, Function

• The cylinder head forms the combustion chamber and intake and exhaust ports.

Construction

• The lightweight cylinder head is made of aluminum alloy with excellent thermal conductivity.
• There are two intake valves and two exhaust valves per cylinder for a total of four valves and the intake/exhaust type has been changed to a cross-flow type, improving intake and exhaust efficiency.
• With the adoption of plastic region tightening * for the cylinder head bolts, axial force has been stabilized.
• By incorporating an exhaust gas passage in the cylinder head, the exhaust manifold is unnecessary, the engine weight is reduced and a compact layout is realized.
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*:Plastic region tightening is a method of controlling the tightening using the rotation angle of a bolt and suppressing the variations in the axial force by tightening the bolt until its deformation does not return to its original condition (plastic region).