Patent ID: 6213909
Filing Date: 2001-04-10
Classification: F16H

Abstract:
A powertrain having a power source and transmission comprising:an input shaft for delivering power between said power source and the transmission;an output shaft for delivering power from the transmission;a compound planetary gear set having a carrier assembly member including a plurality of pairs of intermeshing pinion gear members, said carrier assembly member being continuously connected with said input shaft, a sun gear member meshing with one of the pinion gear members in each pair, and a ring gear member meshing with the other of the pinion gear members in each pair;a simple planetary gear set having a ring gear member continuously connected with said output shaft, a sun gear member, and a carrier assembly member including a plurality of pinion gear members meshing with both said ring gear member and said sun gear member;a first torque transmitting mechanism selectively connectable between said simple planetary carrier assembly member and said compound planetary ring gear member;a second torque transmitting mechanism selectively connectable between said simple planetary carrier assembly member and said input shaft;a third torque transmitting mechanism selectively connectable between said compound planetary ring gear member and a stationary housing;a fourth torque transmitting mechanism selectively connectable between said compound planetary sun gear member and said stationary housing; anda mechanical clutch having first portion connected with said compound planetary sun gear member and said fourth torque transmitting mechanism, a second portion connected with said second torque transmitting mechanism, and a clutch control portion continuously, drivingly connected with said simple planetary sun gear and selectively connectable with said first and second portions individually.