Electric Machine Basic Function - GF08.10-P-2000A

Model all (PKW)

with Code ME01 (Electric-Motor)

Model all (PKW)

with Code ME05 (Hybrid drive 85 kW-94 kW - Variant (incl. Plug-in))

Model all (PKW)

with Code ME08 (Hybrid-DRIVE 75-84 KW-VARIANT (INCLUDING PLUGIN))

Model all (PKW)

with Code ME10 (Hybrid-vehicle)

Model all (PKW)

with Code MEB2 (Entry-Variant with M-Battery)

Model all (PKW)

with Code MEC2 (Mid-Variant with M-Battery)

Model all (PKW)

with Code MEC3 (Mid-Variant with L-Battery)

Model all (PKW)

with Code MEE3 (Top-Entry-Variant with L-Battery)

Model all (PKW)

with Code MEF3 (AMG-Entry-Variant with L-Battery + 4MATIC)

Model all (PKW)

with Code MEH2 (Sport-Variant with M-Battery)

Overview

This document contains information on:

General
Function

General

The electrical machine converts electrical energy into mechanical energy when the motor is running and in this way supplies a drive torque. In generator mode, the electrical machine converts mechanical energy into electrical energy (recuperation).

Function

The following applies to electric vehicles:

A vehicle can contain one or two electrical machines. This can be designed as an asynchronous machine with a squirrel cage or as a permanent magnet three-phase synchronous machine. The rotor is connected to the output shaft via a fixed gear unit without a mechanical separation point. The electrical connection is made via the power electronics control unit.

The following applies to hybrid vehicles:

The electrical machine is designed as a three-phase synchronous machine with permanent magnet excitation. The electrical connection is made via the power electronics control unit. Depending on the type, the electrical machine is arranged in the drive train as follows:

In the automatic transmission in the transmission bell housing.
The rotor is positively connected to the motor separation coupling via the rotor support.
Together with the engine separation clutch and the double clutch in the clutch unit.

The design of the electrical machine as a wet-running machine allows optimal dissipation of the heat lost from the rotor and stator.

The change between the motor / generator mode is controlled by the power electronics control unit. For this purpose, the three phase currents of the electrical machine are regulated as a function of the operating mode and the rotor position. These phase currents generate a rotating magnetic field which, together with the rotor field, generates a mechanical torque. When the engine is running, this leads to a torque that acts directly on the drive and thus drives the vehicle or pulls the internal combustion engine. In generator mode, the electric machine generates a braking torque that decelerates the vehicle or loads the internal combustion engine. Depending on the type, the transmission of the torque of the electrical machine depends on the position of the motor isolating clutch.

Components
Position sensor rotor electrical machine basic function	Hybrid vehicles and electric vehicles with synchronous machines	GF08.40-P-2002A
Basic function of the electrical machine temperature sensor		GF08.40-P-2003A
Basic function of the electric machine speed sensor	Electric vehicles with asynchronous machines	GF08.40-P-2004A
Detailed information
Electric machine detailed information	Model 293 with Code ME01 (Electric-Motor)	GF08.10-P-2500A
	Model 167 with Code ME05 (Hybrid drive 85 kW-94 kW-Variant (incl. Plug-in)) Model 213 from model J.. 2021 with Code ME05 (Hybrid drive 85 kW-94 kW-Variant (incl.. Plug-in)) Model 213 from model J. 2021 with Code ME08 (Hybrid-drive 75-84 KW-VARIANT (INCLUDING PLUGIN))	GF08.10-P-2500B
	Model 243	GF08.10-P-2500C
	Model 297	GF08.10-P-2500D
	Model 177, 247 with code ME08 (Hybrid-Drive 75-84 KW-VARIANT (INCLUDING PLUGIN))	GF08.10-P-2500E
	Model 223 with Motor 256 with Code ME10 (Hybrid-vehicle)	GF08.10-P-2500F