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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Tire settings
General information
The information about the mounted tires can be
entered in the tire settings if the system does not
automatically detect the tires.
The tire sizes of the mounted tires can be gathered
from the tire inflation pressure details on the
vehicle or directly on the tires.
The tire deta
Displays and control
elements
In the vicinity of the steering
wheel
Light switch element
Turn signal indicator, high beams
Instrument cluster
Wipers
Indicator/warning lights
Instrument cluster
The indicator/warning lights can light up in a variety
of combinations and colors.
Several of the lights are checked for proper f
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