Adaptive Control

• Uphill/downhill control

Based on the vehicle speed and accelerator opening angle, excess driving force is judged from engine output and acceleration while the road gradient is estimated, in order to select optimum gear range as needed and reduce unnecessary shifting.

Fig 1: Overview Of Adaptive Control (Uphill/Downhill)

Courtesy of SUBARU OF AMERICA, INC.

• Control during sudden release of accelerator pedal

When accelerator pedal is suddenly released, TCM judges the driver's intention for deceleration and temporarily prohibits shift-up to hold the current gear position in order to ensure engine brake operation.

• Control during braking

Operation frequency of this function in S# mode is higher than that in S mode.

The gear range is held (restraining upshift) or shifted down depending on the driving condition and braking force (deceleration), in order to ensure engine brake operation and driving force for re-acceleration.

• Control during cornering

Operation frequency of this function is as follows: S# > S > I.

Based on the cornering driving judgement from the driving condition and vehicle acceleration (longitudinal and lateral acceleration), unnecessary shift-up is restrained to ensure stable driving force and turning performance.