BMW 3: Valve gear
VANOS
VANOS unit B46 engine and B46TU/B48TU engines
- VANOS B46 engine
- VANOS B46TU and B48TU engine
Following the changeover from a two-part chain drive to a single-part chain drive, the camshaft sprockets on the VANOS now have 46 teeth instead of the previous 36 teeth. To compensate for the additional weight of the larger camshaft sprockets, the adjuster was designed to be shorter and more compact. Additionally, the chain track was displaced by 1.5 mm.
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Belt drive
Comparison belt drive B46 engine and B46TU/B48TU engines
B46 Engine (transverse installation shown)
B46TU/B48TU engines (transverse installation shown)
Deflecting element
Alternator
Coolant p
Split cooling
Split cooling is a new development for the B46TU engine. This cooling concept
is a modified version
of which is already used in the N63TU2.
The Split Cooling function uses the electrical Split Cooli
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ConnectedDrive Services
Functional requirements
Subscription to the optional Convenience
Plan.
The date setting on the Control Display is
current, see Owner's Manual for the vehicle.
Cellular network reception must be available.
ConnectedDrive Store
Concept
In vehicles with specific technical requirements,
various s
With Comfort Access:
convenient closing
Safety information
Warning
With convenient closing, body parts can be
jammed. There is a risk of injury. Make sure
that the area of movement of the doors is clear
during convenient closing.
Closing
Press and hold the button on the
vehicle
key in the area close to the vehicle after
locking.
The wi
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