BMW 3: Cooling System
BMW 3 Series G20 (2018-2025) Training manual / B46TU-B48TU Engines / Cooling System
- Split cooling
- Heat management module
- Operating strategy
- Operating temperature
- Coolant pump
- Exhaust System
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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
Heat management module
The heat management module replaces the characteristic map thermostat.
Heat management module
Electrical Split Cooling Valve (SCV)
Coolant output towards the coolant pump
Electrical actuator
Rot
Operating strategy
The following graphic shows the positions of the rotary valve as the coolant
temperature increases:
Switching diagram heat management module
0% - Rotary valve closed
100% - Rotary valve open
Cold
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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.
H
General driving notes
Closing the trunk lid
Safety information
Warning
An open trunk lid protrudes from the vehicle
and can endanger occupants and other traffic
participants or damage the vehicle in the event
of an accident, braking or evasive maneuvers.
In addition, exhaust fumes may enter the car's
interior. There is
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