1. E85 (e.g. Drive Line) Transmissions
SOP USA:
GS5-20BG
SOP USA:
GA5HP19Z 2 2

2. E85 (e.g. Drive Line) Transmissions
SOP ECE:
GS6-37BZ
Later:
SMG 6-Gear 2 2

3. E85 (e.g. Drive Line) GS6-37BZ Transmission
Casing:
Diecast aluminium,
Fixed with aluminium bolts!
1) Gearbox bearing block 2 2

4. E85 (e.g. Drive Line) GS6-37BZ Transmission
Dual-mass flywheel
Involute toothing of
the drive shaft 2 2

5. E85 (e.g. Drive Line) GS6-37BZ Transmission2 2

6. E85 (e.g. Drive Line) GS6-37BZ Transmission
1st Gear:
i 1.gear = 4.350
300 Nm
390 Nm
1226 Nm 2 2

7. E85 (e.g. Drive Line) GS6-37BZ Transmission
1st Gear:
2nd Gear:
i 2.gear = 2.496
300 Nm
390 Nm
300 Nm
390 Nm
704 Nm 2 2

8. E85 (e.g. Drive Line) GS6-37BZ Transmission
300 Nm
390 Nm
2nd Gear:
3rd Gear:
i 3.gear = 1.665
300 Nm
390 Nm
470 Nm 2 2

9. E85 (e.g. Drive Line) GS6-37BZ Transmission
300 Nm
390 Nm
3rd Gear:
4th Gear:
i 4.gear = 1.230
300 Nm
390 Nm
347 Nm 2 2

10. E85 (e.g. Drive Line) GS6-37BZ Transmission
300 Nm
390 Nm
4th Gear:
5th Gear:
i 5.gear = 1
300 Nm
300 Nm 2 2

11. E85 (e.g. Drive Line) GS6-37BZ Transmission
6th Gear:
300 Nm
5th Gear:
i 6.gear = 0.851
300 Nm
390 Nm
240 Nm 2 2

12. E85 (e.g. Drive Line) GS6-37BZ Transmission
Reverse Gear:
i R.gear = 3.926
300 Nm
390 Nm
1107 Nm 2 2

13. E85 (e.g. Drive Line) SMG 6-Gear Transmission2 2

14. E85 (e.g. Drive Line) SMG 6-Gear Transmission
SMG bus overview 2 2

15. E85 (e.g. Drive Line) SMG 6-Gear Transmission
SMG input/
output signals 2 2

16. E85 (e.g. Drive Line) SMG 6-Gear Transmission
FDC-Function 2 2

17. E85 (e.g. Drive Line) SMG 6-Gear Transmission2 2

18. E85 (e.g. Drive Line) SMG 6-Gear Transmission
1 Shift/selection actuator
2 Shift-travel sensor
3 Selection-angel sensor
4 Pressure accumulator
5 Clutch actuator with Clutch control travel sensor
6 Hydraulic pump
7 Sensor for gearbox input speed
8 Expansion tank
9 Valve block 2 2

19. E85 (e.g. Drive System) Topics
Powertrain:
Rear Axle Differential
Propeller Shaft
Drive Shaft 2 2

20. Chassis I: E85 (e.g. Chassis) Topics Front Axle Rear Axle Suspension 2

21. Chassis II: E85 (e.g. Chassis) Topics Brake System Parking Brake
Driving Dynamic System 2 2

22. Chassis III: E85 (e.g. Chassis) Topics Electric Power Steering (EPS)
Run Flat Tyre (RFT)
Tyre defect indicator (RPA) 2 2

23. E85 (e.g. Chassis) Chassis III
Run Flat Tyre: 2 2

24. E85 (e.g. Chassis) Chassis III
RPA button and indicator lamp: 2 2

25. E85 (e.g. Chassis) Chassis III
EPS bus overview 2 2

26. E85 (e.g. Chassis) Chassis III
EPS
components 2 2

27. E85 (e.g. Chassis) Chassis III
EPS input / output signals 2 2

28. E85 (e.g. Chassis) Chassis III
EPS System schematic
Backup and safety function:
Default 1 [Heavy]
No Servo function
Default 2 [40 sec. On block]
Power reduction up to 50%
Default 3 [missing v-signal]
No Servotronic function
Default 4 [LWS def.]
No active return to center 2 2

29. E85 (e.g. Chassis) Chassis III
EPS mounting 2 2

30. E85 (e.g. Chassis) Chassis III
Servo unit components
Magnet wheel
Steering torque sensor with coil-spring cassette
EPS control unit
Servo unit electric motor
Worm gear shaft
Steering angle sensor
Tuning lock
Housing from worm gear and steering torque sensor
Worm gear
Torsion bar 2 2

31. E85 (e.g. Chassis) Chassis III
Lower steering spindle 2 2

32. E85 (e.g. Chassis) Chassis III
Operating principle of steering torque sensor
Magnetoresistive element 1
Signal amplification
Power supply
Signal 1
Signal 2
Ground/earth
Ceramic substrate
Magnetoresistive element 2
Magnet wheel 2 2

33. E85 (e.g. Chassis) EPS benefits2 2