BMW N55 - Oil Filtration and Oil Cooling

30
N55 Engine
Oil Filtration and Oil Cooling
The oil filter housing is made from Duroplast. Based on the application, two types of
engine oil coolers may be used. Depending on the oil temperature, a thermostat on the
oil filter housing controls the oil flow through the oil cooler.
Index Explanation
1
Intake pipe
2
Oil pump
3
Unfiltered oil duct
4
Oil filter
5
Main oil duct (filtered oil duct)
6
Chain tensioner
7
VANOS solenoid valve, exhaust side
8
VANOS solenoid valve, intake side
9
VANOS adjustment unit, intake side
10
VANOS adjustment unit, exhaust side
15
Connection to exhaust turbocharger lubrication
16
Connection for oil spray nozzles
17
Crankshaft bearing
18
Oil duct for oil pressure control
19
Oil pressure control valve
21
Oil duct for vacuum pump lubrication
22
Vacuum pump