BMW 3: Engine Mechanical
BMW 3 Series G20 (2018-2025) Training manual / B46TU-B48TU Engines / Engine Mechanical
- Engine housing, Crankshaft drive
- Connecting rod - Crankshaft drive
- IROX coating - Crankshaft drive
- Chain drive - Crankshaft drive
- Chain tensioner
- Valve gear
- Belt drive
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Engine housing, Crankshaft drive
Engine housing
Cylinder head
The cylinder head is made of aluminum.
Only slight modifications have been made to the B46TU head compared to the B46.
Cylinder head
Crankshaft drive
Crankshaft
Comparis
Connecting rod - Crankshaft drive
Connecting rod
Piston
Area transferring the force
Wrist pin
Connecting rod bearing with shaped bore hole
Connecting rod
Connecting rod bearing (B46TU only)
Small connecting rod eye (trapezoid
IROX coating - Crankshaft drive
Detailed magnification of the IROX coating
IROX-coated bearing shell
Oil film
IROX coating
Bearing shell
Binding resin
Hard particle
Solid lubricant
The IROX coating is applied to a conventi
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Vehicle battery
General information
The battery is maintenance-free.
More information about the battery can be requested
from a dealer's service center or another
qualified service center or repair shop.
Safety information
Warning
Vehicle batteries that are not compatible can
damage vehicle systems and impair veh
Warning function
If you leave the lane
If you leave the lane and if a lane marking has
been detected, the steering wheel vibrates in accordance
with the steering wheel vibration setting.
If the turn signal is switched on before a lane
change, a warning is not issued.
Steering intervention
Depending on the equipment
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