GF27.10-P-0001-14N Automatic Transmission (AT), Features

GF27.10-P-0001-14N Automatic transmission (AT), features
- Transmission 722.9


The following features differentiate transmission 722.9 from transmission 722.6:
^ The transmission features 7 forward gears and 2 reverse gears.
^ A Ravigneaux gear set and 2 single planetary gear systems are used and thus other ratios are achieved.
^ The fully integrated transmission control (VGS) control unit (Y3/8n4) is located in the electric controller unit (VGS) (Y3/8). The transmission oil is therefore continuously flushed around the outside of the control unit which ensures the control unit is cooled.
^ The transmission oil temperature is recorded by the transmission oil temperature sensor (Y3/8n4) installed in the fully integrated transmission control (VGS) control unit (Y3/8s2).
^ The interfaces to the wiring loom have been reduced by the new position of the fully integrated transmission control (VGS) control unit (Y3/8n4).
^ Transmission 722.9 is therefore available as a compact assembly unit.
^ A torque converter lockup clutch with torsional dampers, which is slip-controlled in all 7 forward gears, is used.
^ The disks used on the multidisk clutches and 2 multidisk brakes are single-sided disks. The friction lining is only applied to one side on this version.
^ 3 sensors are fitted for recording rpm. This increases ease of shifting and reduces the reaction time during the shift operations.
^ It is possible to update (flashing) the control unit software in transmission 722.9 as and when required. This flash-updating is carried out using STAR DIAGNOSIS.