New Generation N62 Engine Chapter 3 P.1
Course Contents/Background Material
© BMW AG, Service Training
N62 engine mechanics
Fresh air system
- Air routing
Fig. 6: N62 air routing
The intake air passes through the air intake duct to the air
cleaner, through the throttle section into the variable intake
manifold, and on to the two cylinder head intake ducts.
In accordance with fording depth guidelines, the air intake ducts
are situated high in the engine compartment. Fording depth is as
follows:
- 150 mm water depth at 30 km/h
- 300 mm water depth at 14 km/h
- 450 mm water depth at 7 km/h
The air cleaner element is designed to be changed at
100,000 km intervals.
Index Description
1 Air intake duct
2 Air cleaner housing with intake air silencer
3 Intake pipe with HFM (hot-film air-mass flow sensor)
4 Secondary air valves
5 Secondary air pump
KT-7888
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