TIMING CHAIN, CHAIN TENSIONER [SKYACTIV-G 2.0]
2016 – MX-5 – Engine
TIMING CHAIN, CHAIN TENSIONER [SKYACTIV-G 2.0]
Purpose, Function
Timing chain
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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
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The chain tensioner stabilizes the movement of the timing chain by constantly holding the tension of the timing chain to stabilize the valve open/close timing.
Construction
Timing chain
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The timing chain is located 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.
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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.
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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
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The chain tensioner is located on the cylinder block (engine front part).
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An oil pressure type chain tensioner has been adopted for the chain tensioner.
OPERATION
Chain tensioner
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Tension fluctuation on the timing chain is suppressed due to hydraulic pressure and spring force, and the timing chain tensioner maintains tension on the timing chain.
