gf0800p9901a

Electric drive, basic function

Typ gf · téma 08.00 · verze 0101 · 2019-06-06

Platí pro: Model all (CAR) with code ME01 (Electric motor)

Není k dispozici v jazyce „cs“; zobrazeno v jazyce Angličtina.

Zařazení

Funkční skupina 1 Motor › 08 Elektropohon, hybridní pohon › 08.00 Všeobecné — Řada 900 (modely 9**) · Řada 902 (modely 9**) · Řada 904 (modely 918, 919, 924, 925, 938, 943, 957) · Řada 906 (modely 917, 918, 924, 953)

EinPAS 15 Motor › 15.50 Elektropohon/hybridní pohon › 15.50.1 Základní informace — Řada 900 (modely 9**) · Řada 902 (modely 9**) · Řada 904 (modely 918, 919, 924, 925, 938, 943, 957) · Řada 906 (modely 917, 918, 924, 953)

Platí také pro motory/převodovky: 139 ***, 254 ***, 256 ***, 272 ***, 276 ***, 282 ***, 457 9**, 541 9**, 542 9**, 608 ***, 700 4**, 700 420, 700 421, 700 422, 700 423, 715 3**, 715 5**, 722 6**, 722 9**, 724 ***, 724 0**, 724 033, 724 044, 724 045, 724 1**, 724 103, 724 114, 724 115, 724 120, 725 ***, 725 0**, 725 035, 725 037, 725 038, 725 085, 725 1**, 739 390, 739 391, 739 395, 739 396, 739 397, 739 398, 739 399, 740 698, 743 3**, 743 4**, 743 498, 746 971, 924 9**, 924 910, 925 9**, 926 9**

GF08.00-P-9901A

Electric drive, basic function

05.06.2019

Model

all (CAR)

with code ME01 (Electric motor)

The general way in which the electric drive operates is explained below.

General

In vehicles with two electric machines, the following explanations apply per machine.

The electric drive consists of the electric machine, the transmission and the power electronics control unit. Traction management is performed via the powertrain control unit (master control unit). This directly reads in the signal of the accelerator pedal sensor. Energy management is also performed via the powertrain control unit.

On the basis of the accelerator pedal position and further relevant vehicle data, the powertrain control unit calculates the required torque of the electric drive system and requests this from the power electronics control unit. The power electronics control unit actuates the electrical machine with 3-phase AC current via the integral power inverter and monitors the electric machine concerning temperature and the generated drive torque. The electric machine transmits the drive torque to the drive shaft via a permanently transmitted transmission.

The electric machine obtains the energy required for engine operation from the high-voltage battery via the high-voltage on-board electrical system. Charging the high-voltage battery takes place during driving in deceleration mode when the electric machine is working as a generator, or in stationary form through connection to an external power source.

To protect the electric drive system from overheating, the electric machine and the power electronics control unit are cooled.

The driver receives information about the energy flow and the charge level of the high-voltage battery via the multifunction display.

Internal function sequences of the brake system, the 12 V on-board electrical system and the high-voltage on-board electrical system are not dealt with in greater detail here.

During recuperative braking, the braking torque requested by the driver via the brake pedal is not implemented via the service brake but at least partially by the electric machine.

Subsystems

Direction of travel selection, basic function

Model 293
with code ME01 (Electric motor)

GF08.00-P-1002A

Driving mode, basic function

Model 293
with code ME01 (Electric motor)

GF08.00-P-1003A

Overrun mode, basic function

Model 293
with code ME01 (Electric motor)

GF08.00-P-1004A

Power output limitation, basic function

GF08.00-P-1005A

Electric drive monitoring, basic function

GF08.00-P-1006A

Charge battery while driving, basic function

GF54.10-P-1002A

Stationary battery charging, basic function

GF54.10-P-1006A

High-voltage on-board electrical system, basic function

GF54.10-P-1016A

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