gf2800p0001avi

Automatically controlled all-wheel drive (4MATIC), function

Typ gf · téma 28.00 · verze 0101 · 2017-06-05

Platí pro: Model 217, 222 with transmission 725.0 (except 725.096)

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

Zařazení

Funkční skupina 2 Podvozek › 28 Rozdělovací převodovka › 28.00 Všeobecné — Řada 217 · Řada 222

Platí také pro motory/převodovky: 725 001, 725 004, 725 005, 725 007, 725 008, 725 011, 725 014, 725 015, 725 017, 725 018, 725 019, 725 021, 725 025, 725 031, 725 034, 725 035, 725 037, 725 038, 725 044, 725 045, 725 047, 725 048, 725 051, 725 054, 725 055, 725 058, 725 066, 725 081, 725 085, 725 091, 725 095, 725 099

GF28.00-P-0001AVI

Automatically controlled all-wheel drive (4MATIC), function

15.05.2017

Model

217, 222 with transmission 725.0 (except 725.096)

Automatically controlled all-wheel drive (4MATIC), function

P28.19-2097-79

Block diagram

A1

Instrument cluster

N73

Electronic ignition switch control unit

CAN C1

Drive train CAN

A7/3

Traction system hydraulic unit

N127

Drivetrain control unit

CAN HMI

User interface CAN

N3/10

ME-SFI [ME] control unit

Y3/8n4

Fully integrated transmission control control unit

CAN PER

Peripherals CAN

N30/4

Electronic Stability Program control unit

Flex E

Chassis FlexRay

Automatically-controlled all-wheel drive (4MATIC) in general

The automatically controlled all-wheel drive (4MATIC) is a permanent all-wheel drive with interaxle differential.

The separate transfer case is fastened to the transmission housing and features the following design-related advantages:

In case of defects, the transmissions (automatic transmission and transfer case) can be replaced or repaired separately. However, due to the opportunity to replace defined components, a complete replacement of the transfer case is not necessarily required.

Due to separate oil circuits (of the automatic transmission and the transfer case), there is no mutual impairment due to debris (e.g. due to metal abrasion).

The lubrication system is designed as splash lubrication without external cooling.

The pre-lock torque of 40 to 50 Nm serves to improve traction at low engine torque while also helping to avoid any vibrations in the drivetrain.

The fixed drive torque distribution is 45 % at the front axle and 55 % at the rear axle.

The drive torque is distributed via a single-speed transfer case without off-road ratio to the drive axles (drive train).

Further subfunctions are described in separate documents:

4MATIC transfer case, function

Front axle transmission output 4MATIC function

4MATIC front axle transmission, function

Oil supply for 4MATIC transfer case function

4MATIC electronic traction system, function

Automatically regulated all-wheel drive (4MATIC) torque distribution

GF28.00-P-0001-02AVI

Automatically controlled all-wheel drive (4MATIC), technical data

GF28.00-P-0001-03AVI

4MATIC transfer case, function

GF28.10-P-1000AVI

4MATIC front axle transmission output, function

GF28.10-P-1012AVI

Oil supply for 4MATIC transfer case function

GF28.55-P-3010AVI

4MATIC front axle transmission, function

GF33.10-P-3000AVI

4MATIC electronic traction system, function

GF42.35-P-1000AVI

Overview of system components, automatically controlled all-wheel drive (4MATIC)

GF28.00-P-9998AVI

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