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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Overview
Button in the vehicle
Intelligent Safety
Radar sensors
The radar sensors are located in the rear
bumper.
Always keep the bumper in the area of the radar
sensors clean and unobstructed.
Switching on/off
Switching on automatically
Blind spot collision warning is automatically activated
after depart
Voltage supply for other high-voltage consumers
The Electrical Machine Electronics supplies voltage not only to the
electrical machine. The
convenience charging electronics are directly connected with the Electrical
Machine Electronics and
ensure the voltage supply at high-voltage level to the electric A/C compressor
and electrical heating.
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