BMW 3: New control units
Compared with the G20, a number of new control units have been installed in
the G20 PHEV.
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Electrical machine electronics
The function of the Electrical Machine Electronics (EME) is to activate and
regulate the permanently
excited synchronous machine in the high-voltage vehicle electrical
Convenience charging electronics
The convenience charging electronics enable communication between the vehicle
and charging
station of the AC voltage supply in order to charge the high-voltage batte
In the G20 PHEV an acoustic protection for pedestrians is used as standard.
To protect pedestrians
a distinctive sound created specially for electric BMW models is generated
during electric driving.
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Brakes and clutches are described as shift elements which make possible the
shifting and changing
of all gears. Like in the GA8HP70Z transmission, the following shift elements
are also used in the
GA8P75HZ transmission:
2 fixed multidisc brakes (brakes A and B)
3 rotary multidisc clutches (clut
The Electrical Machine Electronics (EME) is primarily used as control
electronics for the electrical
machine. It is also responsible for converting the direct current voltage from
the high-voltage battery
unit (up to approximately 354.2 V DC) into a three-phase AC voltage for
electrical machine m