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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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 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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Concept
The automatic climate control achieves the set
temperature as quickly as possible, if needed, by
using the maximum cooling or heating capacity,
and then keeps it constant.
Adjusting
Press the upper or lower button
side to
set the desired temperature.
Via iDrive:
1. "CAR".
2. "Settings".
3
General information
The possible search criteria depend on the selected
audio source.
Searching for track information
The following search criteria refer to the data
stored in the track information.
1. Move the Controller to the left.
2. "Media search".
3. Select the desired setting:
"Search"