TIMING CHAIN, CHAIN TENSIONER [SKYACTIV-G 2.0, SKYACTIV-G 2.5]

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Purpose, Function

Timing chain

•  The timing chain transmits the rotation force of the crankshaft to the camshaft to perform the rotation timing of the crankshaft and camshaft.

Chain tensioner

•  The chain tensioner constantly maintains the timing chain tension and the timing chain operation is stabilized.

Construction

Timing chain

•  The timing chain is installed between the camshaft sprocket and crankshaft sprocket.

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•  Lubrication of the timing chain and each sprocket is performed using the engine oil from the engine front cover.

•  The sliding resistance has been reduced and the timing chain behavior has been stabilized by changing to a straight-shaped chain guide (No.2) and setting the chain tensioner load to the required minimum.

•  Improvement of the rigidity of the chain guide and tensioner arm and the stability of the timing chain operation have reduced the sliding resistance.

Chain tensioner

•  The chain tensioner is installed to the cylinder block (engine front).

•  An oil pressure type chain tensioner has been adopted for the chain tensioner.

OPERATION

Chain tensioner

•  Fluctuation in the timing chain tension by oil pressure and spring force is suppressed, and the tension is maintained at a constant.

Chain tensioner (type A)

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Chain tensioner (type B)

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