CAMSHAFT [SKYACTIV-D 2.2]

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Purpose, Function

•  The camshaft is rotated by receiving the rotation force of the crankshaft via the timing chain. The valve is opened and closed according to the cam shape at this time.

Construction


Fuel injector (2pin type)

•  The camshaft is installed to the cylinder head.
•  The cam has been induction hardened. As a result, resistance to abrasion has been enhanced.
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•  The exhaust camshaft uses three types of cams (normal cam, high lift cam, low lift cam) with different shapes.
•  The normal cam presses the rocker arm (No.1) down, and the high lift cam and low lift cam press the rocker arm (No.2) down. (See HYDRAULIC LASH ADJUSTER, ROCKER ARM [SKYACTIV-D 2.2].)
•  The phase of the low lift cam deviates because the exhaust valve opens two times during 1 cycle. (See INTAKE STROKE EGR USING DOUBLE EXHAUST VALVE ACTUATION SYSTEM (IDEVA) [SKYACTIV-D 2.2].)
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Valve timing
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Valve timing
IN
Open
BTDC (°)
9
Closed
ABDC (°)
36
EX
Open
BBDC (°)
40 (IDEVA: -276)
Closed
ATDC (°)
8 (IDEVA: 200)


Fuel injector (6pin type)

•  The camshaft is installed to the cylinder head.
•  The cam has been induction hardened. As a result, resistance to abrasion has been enhanced.
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Valve timing
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Valve timing
IN
Open
BTDC (°)
9
Closed
ABDC (°)
36
EX
Open
BBDC (°)
40
Closed
ATDC (°)
8