Engine - INGENIUM I6 3.0L Petrol (G2341923): Description: Crankshaft
| ITEM | DESCRIPTION |
|---|---|
| 1 | Timing chain drive sprocket |
| 2 | Upper main bearing (quantity 6) |
| 3 | Thrust washer (quantity 2) |
| 4 | Upper main bearing - Center |
| 5 | Crankshaft |
| 6 | Lower main bearing (quantity 7) |
The crankshaft is manufactured from forged carbon steel C38 MOD with induction hardened main and large end bearing journals. The fillets of the main and large end bearing journals are fillet rolled to improve the strength of the crankshaft. The crankshaft is installed in 7 main bearings. The 12 counter-balance weights provide low vibration levels. The 7 main bearing journals are designed to contribute to stiffness.
There are 2 different upper main bearing designs. The fourth upper main bearing does not have an oil groove. The other 6 upper main bearings has an oil groove at each end.
The oil groove on the upper main bearing transfers pressurized engine oil into the crankshaft to lubricate the following:
- The main bearings
- The connecting rod bearings.
The 2 individual thrust washers are located on either side of the fifth main bearing journal panel of the cylinder block. The thrust washers control the crankshaft end float.