Lubrication System Flow Diagram - Ingenium I4 2.0L Diesel 240 PS
| ITEM | DESCRIPTION |
|---|---|
| 1 | High Pressure (HP) turbocharger |
| 2 | Low Pressure(LP) turbocharger |
| 3 | Hydraulic valve tappet (16 off) |
| 4 | Exhaust camshaft |
| 5 | Variable camshaft timing (VCT) actuator |
| 6 | Intake camshaft |
| 7 | Secondary chain oil jet |
| 8 | Primary chain oil jet |
| 9 | Secondary chain tensioner |
| 10 | Piston cooling oil jet (4 off) |
| 11 | Piston cooling oil jet solenoid |
| 12 | Crankshaft |
| 13 | Oil filter and housing assembly |
| 14 | Engine oil cooler |
| 15 | Oil gallery pressure feedback to variable flow oil pump with integral vacuum pump |
| 16 | Variable flow oil pump with integral vacuum pump |
| 17 | Oil pan |
Oil is drawn from the oil pan and pressurized by the variable flow oil pump with integral vacuum pump. The output from the variable flow oil pump with integral vacuum pump is then filtered through the oil filter and housing assembly and distributed through internal oil passageways in the cylinder block and cylinder head.
The output from the oil filter is distributed through oil galleries in the cylinder heads and the cylinder block. All moving parts are lubricated by pressure or splash oil. Pressurized oil is also provided for the VCT system, the piston cooling jets, the Variable Geometry Turbocharger (VGT), the fixed vane turbocharger (if equipped), the hydraulic valve tappets and the chain tensioner. The gallery pressure is fed back to the variable flow oil pump via a drilling in the cylinder block and the variable flow oil pump uses this pressure signal to regulate the oil flow and pressure. The Powertrain Control module (PCM) can control the variable flow oil pump electrically, requesting a pressure held in engine oil pressure map which is dependent on engine speed and load.
The oil returns to the oil pan under gravity. Large drain holes through the cylinder head and the cylinder block ensure the rapid return of the oil to the oil pan. System replenishment is through the oil filler cap on the camshaft cover. An oil drain plug is installed in the side of the oil pan.