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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Reducing fuel consumption
General information
The vehicle contains advanced technologies for
the reduction of consumption and emission values.
Fuel consumption depends on a number of different
factors.
Carrying out certain measures, such as a moderate
driving style and regular maintenance, can influence
fuel consumption an
Destination entry by voice
General information
Instructions for the voice activation system,
see vehicle Owner's Manual.
When making a destination entry by voice,
you can change between voice operation and
iDrive.
To have the available voice commands read
out loud: ›Voice commands‹ or ›Help‹.
Saying the entri
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