8-Speed Automatic Gearbox (8HP): Notes

The new 8-speed automatic gearbox transfers more torque to the wheels and simultaneously increases efficiency. This 8-speed automatic gearbox is a planetary gear train with four single planetary gear sets.

The eight forward gears and the reverse gear are controlled hydraulically and electronically using a mechatronics module. The hydraulic shift unit and the electronic transmission control (EGS) have been combined to the mechatronics module.

The individual gear sets are connected by five shift elements, two multidisc brakes and three multidisc clutches. The planetary gear sets are aligned so that three shift elements are closed and only two are open for each gear. The considerable advantage is the reduction of drag.

Power transmission in kilowatt	550 kW
Power transmission in Newton meter	900 Nm
Torque converter	NW270TTD
Maximum constant speed of the torque converter	7000 rpm
Gearbox weight including oil in kg	99, 0
Towing suitability	500 km at up to 80 km/h