BMW 3: B46TU-B48TU Engines
BMW 3 Series G20 (2018-2026) Training manual / B46TU-B48TU Engines
- Introduction
- Engine Mechanical
- Engine housing, Crankshaft drive
- Connecting rod - Crankshaft drive
- IROX coating - Crankshaft drive
- Chain drive - Crankshaft drive
- Chain tensioner
- Valve gear
- Belt drive
- Cooling System
- Split cooling
- Heat management module
- Operating strategy
- Operating temperature
- Coolant pump
- Exhaust System
- Fuel System
- Engine Electrical System
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Innovations B46TU/B48TU
Innovations B46TU
To meet the legal requirements for emissions, a number of technical
improvements have been
implemented. The technical updates for the B46TU engine include the following
new feature
Engine identification
B46TU engine
Engine identification - transverse mounted shown
B48TU engine
Engine identification - transverse mounted shown
Engine number
Engine identification
The 7-digit engine identification
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Cooling system
To increase the service life of the high-voltage battery unit and obtain the
greatest possible power, it
is operated in a defined temperature range. The high-voltage battery unit is
essentially operational at
an ambient temperature of -40 ºF to 131 ºF (-40 ºC to +55 ºC ) (actual cell
External temperature
General information
If the indicator drops to +37 ℉/+3 ℃ or lower, a
signal sounds.
A Check Control message is displayed.
There is an increased risk of ice on roads.
Safety information
Warning
Even at temperatures above +37 ℉/+3 ℃
there can be a risk of icy roads, for instance on
bridges
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