BMW 3 Owners & Service Manuals

BMW 3: Connections

BMW 3 Series G20 (2018-2025) Training manual / Electrical Machine / Design / Connections

Design
Connections, electrical machine

  1. Transmission bell housing
  2. Temperature sensor
  3. Coolant ducts
  4. Connection for coolant (transmission oil)
  5. Electrical connection, rotor position sensor
  6. High-voltage connection

There are four connections of the electrical machine on the housing of the automatic transmission for the following components:

  • Temperature sensor
  • Cooling (by transmission oil)
  • Rotor position sensor
  • High-voltage cables

High-voltage connection

Design
High-voltage connection, electrical machine

  1. High-voltage connection
  2. High-voltage connector

Electrical energy is fed to the coils of the electrical machine via the high-voltage connection. The high- voltage connection connects the Electrical Machine Electronics to the electrical machine via a three- phase, shielded high-voltage cable.

The high-voltage connectors are screwed on to the Electrical Machine Electronics and the electrical machine.

High-voltage cables must not be repaired. In the event of damage, the line must always be replaced!

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    Sensors, electrical machine Temperature sensor Rotor of the rotor position sensor Stator of the rotor position sensor So that the voltages for the coils in the stator can be correctly calculated

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     Cooling

    To guarantee the thermal operating safety of the electrical machine in every situation, it is cooled with coolant in the G20 PHEV. For this, the electrical machine is integrated in the coolant

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     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 start Warm-up phase Operating temperature Transition from normal operation to maximum cooling req

     General information

    Depending on the vehicle equipment and country version, various settings for opening and closing are possible. These settings are stored for the driver profile currently used. Unlocking and locking Doors Via iDrive: 1. "CAR". 2. "Settings". 3. "Key button settings". 4. Select the symbol. 5. Sel

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