Patent ID: 6364804
Filing Date: 2002-04-02
Classification: F16H

Abstract:
A powertrain having a multi-speed transmission comprising:an input shaft for receiving power from a prime mover; an output shaft for delivering power from said transmission; a planetary gear arrangement having three sun gear members, a ring gear member and a planet carrier assembly member including at least three intermeshing pinion gear members rotatably mounted on a carrier member, each of said sun gears meshing with separate ones of said pinion gear members, said ring gear member meshing with one of said pinion gear members and being continuously connected with said output shaft; a first torque transmitting mechanism selectively connectable between said input shaft and a first of said sun gear members; a second torque transmitting mechanism selectively connectable between said input shaft and said planet carrier assembly member; a third torque transmitting mechanism selectively connectable between said input shaft and a second of said sun gear members; a fourth torque transmitting mechanism selectively connectable between a transmission housing and said planet carrier assembly member; a fifth torque transmitting mechanism selectively connectable between said transmission housing and said second of said sun gear members; a sixth torque transmitting mechanism selectively connectable between said transmission housing and a third of said sun gear members; and said torque transmitting mechanisms being selectively engaged in combinations of two to establish three forward underdrive ratios, a direct drive ratio, two forward overdrive ratios, and a reverse ratio between said input shaft and said output shaft.