Adaptive Shift Strategy
Adaptive shift strategy is comprised of:
- Shift Energy Management - this function involves reducing or increasing engine output torque during shifting.
- Reduces excessive energy of the friction packs
- Increases transmission service life
- Improves shift quality
- Unique shift schedules are selected based on vehicle operation conditions and environmental conditions
- Trailer towing mode
- Pressure Modulation - this function monitors the hydraulic pressure in a shift. This pressure must be matched accurately to the transmission input torque to better provide shift comfort.
- Shift Quality Adapts - is used to provide a higher quality and consistent shift feel. Monitoring and adapting shift pressures and shift energy to overcome hardware variability over time achieve this.
- The TCM has the ability to control the engine output torque during the shift, synchronized with the operation of the transmission clutches.
- Trailer towing mode uses a different shift and converter map. This new map reduces the number of gearshifts when towing, climbing steep hills and while driving at higher altitudes.