For more demanding conditions, Tundra's 4x4 configurations offer a part - time, shift - on - the fly four - wheel drive system featuring a six - pinion planetary
reduction gearset to provide HIGH and LOW ranges.
Not exact matches
A clutch locks the ring gear of the planetary
gearset for a 7.0:1 speed
reduction and torque multiplication ratio.
To engage the low gear range, Toyota opens the conventional planetary
gearset's brake 1 and locks brake 2, resulting in a
reduction gear ratio of 3.900.
As with all Toyota hybrid transaxles introduced from 2006 forward, it utilizes a planetary
reduction gear for the traction motor in addition to the planetary
gearset that is employed as a power - split device.
The planetary
gearset simultaneously fulfills three roles: as a power split device between the generator and the front wheels, as a
reduction gear for the electric motor and, when both work together, as an electronically controlled continuously variable transmission (CVT).