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 MountsRefrigerant Pressure Sensor [Manual Air Conditioner]
Purpose
The refrigerant pressure sensor detects the refrigerant pressure in the refrigerant
cycle.
Function
The refrigerant pressure sensor converts the detected refrigerant pressure
to an electric signal and sends it to the PCM.
Construction
The refriger ...
Low And Reverse Brake [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
The low and reverse brake stops the rotation of the front internal gear and
rear planetary carrier while in 1GR and in reverse, locking them to the transaxle
case.
Construction
The low and reverse brake consist of the following parts shown in the figure.
...
DRL (Daytime Running Light) System
Outline
The DRL system automatically switches the headlights to HI beams (50% dim)
or illuminates the DRL bulb when the ignition is switched ON (engine on), the
parking brake is released, and the shift lever is in a position other than P
(ATX).
The front body control module ( ...