Purpose, Function
The crankshaft converts the reciprocating movement of the piston to a rotational movement via the connecting rod.
The main bearing forms an oil film on the outer surface of the crankshaft journal to prevent wear due to sliding.
Construction
Crankshaft
The crankshaft is installed to the inside (crankcase) of the cylinder block.

The crankshaft has a key groove to match timing to the crankshaft pulley.
The crankshaft has the following parts shown in the figure.

The optimized shaft diameter ratio of the crankshaft journal and crank pin has reduced sliding resistance while maintaining rigidity.
The steel crankshaft has five bearings and eight counterweights for improved accuracy in the rotational balance.
The crankshaft journal and crank pin have been induction hardened* to bear high loads.
The crankshaft has an oil passage for supplying engine oil to the crankshaft journal and crank pin.

Main bearing
The main bearing is installed to the outer surface of the crankshaft journal.
The upper main bearing and lower main bearing are made of aluminum alloy.
The upper main bearing has an oil groove and oil hole.
Thrust force is suppressed by the thrust bearings on both sides of the No.3 journal.

Crankshaft Position (CKP) Sensor
Motor MountsShift And Select Mechanism [C66 M R]
Purpose, Function
The shift and select mechanism moves the shift fork to change gears according
to the operation of the shift lever in the cabin.
Construction
Shift control module
The moving parts of the shift control module are vertically positioned..
In th ...
Blind Spot Monitoring (Bsm) Off Indicator Light
Purpose
The BSM OFF indicator light informs the driver that the Blind Spot Monitoring
(BSM) system is turned off or there is a malfunction in the system.
Function
The instrument cluster illuminates the BSM OFF indicator light based on the
BSM system off signal sent via a CA ...
Positive Crankcase Ventilation (PCV) Valve
Purpose, Function
Prevents release of blow-by gas (unburnt gas) into the atmosphere.
The PCV valve is open/closed by the intake manifold vacuum.
Construction
The PCV valve is installed to the oil separator.
The PCV valve consists of a spring and valve.
...