MECHANICAL [SKYACTIV-D 1.8]

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Outline

• For SKYACTIV-D 1.8, the following is performed to lower fuel consumption.

― Low compression ratio

• Combustion efficiency by lower compression ratio (14.8)

― Weight reductions

• Aluminum alloy cylinder block adopted

• Exhaust manifold integrated cylinder head adopted

― Weight reduction and mechanical resistance loss improvements

• Piston shape optimized

• Narrowed down crankshaft journal

• A maintenance-free design for valve clearance has been achieved with the adoption of the HLA.

Structural View

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Structure

• Consists of the following parts:

Part name		Reference
Cylinder head cover		―
Cylinder head		(See CYLINDER HEAD [SKYACTIV-D 1.8].)
Cylinder head gasket		―
Cylinder block		―
Crankshaft		(See CRANKSHAFT, MAIN BEARING [SKYACTIV-D 1.8].)
Piston		(See PISTON, PISTON RING, PISTON PIN [SKYACTIV-D 1.8].)
Connecting rod		(See CONNECTING ROD, CONNECTING ROD BEARING [SKYACTIV-D 1.8].)
Engine front cover		(See ENGINE FRONT COVER [SKYACTIV-D 1.8].)
Crankshaft pulley		(See CRANKSHAFT PULLEY [SKYACTIV-D 1.8].)
Drive belt		(See DRIVE BELT [SKYACTIV-D 1.8].)
Valve mechanism	Valve	(See VALVE, VALVE SPRING, VALVE SEAL, VALVE GUIDE [SKYACTIV-D 1.8].)
	Camshaft	(See CAMSHAFT [SKYACTIV-D 1.8].)
	HLA, Rocker arm	(See HYDRAULIC LASH ADJUSTER, ROCKER ARM [SKYACTIV-D 1.8].)
Timing chain		(See TIMING CHAIN, CHAIN TENSIONER [SKYACTIV-D 1.8].)
Engine mount		―