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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Functional requirements
Compatible device, with
Bluetooth interface.
The vehicle key is in the vehicle.
The device is ready for operation.
Bluetooth is switched on in the vehicle and
on the device.
The pairing readiness is displayed on the
Control Display.
Bluetooth presettings, such as visibility, may
be requir
HD Radio reception
Concept
Many radio stations broadcast both analog and
digital signals.
General information
When setting a station with a digital signal, it may
take a few seconds before the station plays in
digital quality.
Information about HD Radio stations whose station
name ends with ...HD or with ...HD1:
In a
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