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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 (front of engine).

• 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

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