BMW 3 Owners & Service Manuals

BMW 3: Sensors

Design
Sensors, electrical machine

  1. Temperature sensor
  2. Rotor of the rotor position sensor
  3. Stator of the rotor position sensor

So that the voltages for the coils in the stator can be correctly calculated and generated by the Electrical Machine Electronics in terms of amplitude and phase layer, the precise position of the rotor must be known. The rotor position sensor is responsible for this task. Its structure is similar to that of a synchronous machine and has a specially shaped rotor, which is connected to the rotor of the electrical machine, as well as a stator which is connected to the stator of the electrical machine.

The phase voltages induced by the rotation of the rotor in the coils of the stator are evaluated by the Electrical Machine Electronics and thus the rotor position angle is calculated.

After replacement of the automatic transmission or the Electrical Machine Electronics, the rotor position sensor must be adjusted with help of the diagnosis system.

The components of the electrical machine must not exceed a certain temperature during operation.

There is a temperature model and a temperature sensor for temperature monitoring of the electrical machine. This is designed as a variable resistor with negative temperature coefficient (NTC) and measures the output temperature of the transmission oil at the housing of the automatic transmission.

The hotter the NTC, the lower its resistance.

The Electrical Machine Electronics evaluates the signals of the temperature sensor, compares them with the calculated temperature model and reduces the power of the electrical machine if the temperature of the electrical machine approaches the maximum permissible value.

There is no longer a separate temperature sensor at one of the stator coils.

A replacement of the rotor position sensor is currently not permitted in the BMW Service workshop.

    READ NEXT:

     Separation clutch

    The G20 PHEV is a Full-Hybrid Generation 4.0 vehicle. In contrast to generation 2 and 3 hybrid vehicles, electrical driving is possible in the G20 PHEV at much higher speeds and with a higher range.

     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

     Electrical Machine Electronics

    SEE MORE:

     Route guidance

    Adaptive recuperation uses the data and calculations of the route-ahead assistant. In this way, adaptive recuperation can be used by the navigation system when route guidance is both active and not being used. When the route guidance is not active, the most likely route is used for evaluation. H

     Playback

    General information Once an audio source has been selected, information on playback appears on the Control Display. Information available for the current track followed by the playback list is shown on the Control Display. Content and scope of the playback list depend on the type of the selected pl

    © 2019-2024 Copyright www.bmw3g20.com