Patent ID: 6200242
Filing Date: 2001-03-13
Classification: F16H

Abstract:
A powertrain having a multi-speed planetary transmission comprising:a power source including an input shaft;an output shaft;a first compound planetary gear set having three rotatable members including a sun gear member, a ring gear member, and a planetary carrier assembly member;a second compound planetary gear set having three rotatable members including a sun gear member, a ring gear member, and planetary carrier assembly member, said ring gear member being continuously drivingly connected with said output shaft, said planetary carrier assembly member being continuously connected for common rotation with said ring gear member of said first compound planetary gear set;a first selectively operable torque transmitting mechanism connectable between said power source and said sun gear member of said first compound planetary gear set;a second selectively operable torque transmitting mechanism connectable between said planetary carrier assembly member of said first compound planetary gear set and said sun gear member of said second compound planetary gear set;a third selectively operable torque transmitting mechanism connectable between said power source and said sun gear member of said second compound planetary gear set;a fourth selectively operable torque transmitting mechanism connectable between said power source and said planetary carrier assembly member of said second compound planetary gear set;a fifth selectively operable torque transmitting mechanism connectable between a stationary member and both said planetary carrier assembly member of said second compound planetary gear set and said ring gear member of said first compound planetary gear set;a sixth selectively operable torque transmitting mechanism connected between said stationary member and said planetary carrier assembly member of said first compound planetary gear set;a seventh selectively operable torque transmitting mechanism connectable between said stationary member and said sun gear member of said first compound planetary gear set; andsaid torque transmitting mechanisms being operated in combinations of three to establish six forward speed ratios and one reverse speed ratio between said power source and said output shaft.