Patent ID: 6652411
Filing Date: 2003-11-25
Classification: F16H

Abstract:
A multi-speed power transmission comprising:an input shaft; an output shaft; a planetary gear arrangement including a first planetary gearset, a second planetary gearset, and a third planetary gearset, each planetary gearset having first, second, and third members, said first member of said third planetary gearset being continuously interconnected with said input shaft, said second member of said third planetary gearset being continuously interconnected with said output shaft, said first members of said first and second planetary gearsets being continuously interconnected through an interconnecting member, said second members of said first and second planetary gearsets being continuously connected with a stationary member of the transmission; five torque transmitting mechanisms being operable in combinations of two to establish at least six forward speed ratios and one reverse ratio between said input shaft and said output shaft wherein: a first of said torque-transmitting mechanisms selectively interconnecting said input shaft with said interconnecting member, a second of said torque-transmitting mechanisms selectively connecting said third member of said first planetary gearset with said interconnecting member, a third of said torque-transmitting mechanisms selectively interconnecting said third member of said first planetary gearset with said output shaft, a fourth of said torque-transmitting mechanisms selectively interconnecting said third member of said second planetary gearset with said third member of said third planetary gearset and a fifth of said torque-transmitting mechanisms selectively interconnecting said third member of said second planetary gearset, or said first torque-transmitting mechanism selectively interconnecting said input shaft, said second torque-transmitting mechanism selectively interconnecting said third member of said third planetary gearset with said interconnecting member, said third torque-transmitting mechanism selectively interconnecting said third member of said first planetary gearset with said output shaft, said fourth torque-transmitting mechanism selectively interconnectiing said third member of said second planetary gearset with said third member of said third planetary gearset, and said fifth torque-transmitting mechanism selectively interconnecting said third member of said second planetary gearset with said output shaft, or said first torque-transmitting mechanism selectively interconnecting said third member of said third planetary gearset with said interconnecting member, said second torque-transmitting mechanism selectively interconnecting said input shaft with said third member of said first planetary gearset, said third torque-transmitting mechanism selectively interconnecting said third member of said first planetary gearset with said third member of said third planetary gearset, said fourth torque-transmitting mechanism selectively interconnecting said third member of said first planetary gearset with said output shaft, and said fifth torque-transmitting mechanism selectively interconnecting said third member of said second planetary gearset with said input shaft, or said first torque-transmitting mechanism selectively interconnecting said interconnecting member with said output shaft, said second torque-transmitting mechanism selectively interconnecting said input shaft with said interconnecting member, said third torque-transmitting mechanism selectively interconnecting said third member of said third planetary gearset with said interconnecting member, said fourth torque-transmitting mechanism selectively interconnecting said input shaft with said third member of said first planetary gearset, and said fifth torque-transmitting mechanism selectively interconnecting said third member of said second planetary gearset with said third member of said third planetary gearset, or said first torque-transmitting mechanism selectively interconnecting said third member of said third planetary gearset with said interconnecting member, said second torque-transmitting mechanism selectively interconnecting said third member of said first planetary gearset with said input shaft, said third torque-transmitting mechanism selectively interconnecting said third member of said second planetary gearset with said third member of said third planetary gearset, said fourth torque-transmitting mechanism selectively interconnecting said input shaft with said third member of said second planetary gearset, and said fifth torque-transmitting mechanism selectively interconnecting said third member of said second planetary gearset with said output shaft, or said first torque-transmittting mechanism selectively interconnecting said input shaft with said interconnecting member, said second torque-transmitting mechanism selectively interconnecting said third member of said third member of said third planetary gearset, said third torque-transmitting mechanism selectively interconnecting said input shaft with said third member of said first planetary gearset, said fourth torque-transmitting mechanism selectively interconnecting said third member of said first planetary gearset with said output shaft, and said fifth torque-transmitting mechanism selectively interconnecting said third member of said second planetary gearset with said third member of said third planetary gearset, or said first torque-transmitting mechanism selectively interconnecting said input shaft with said interconnecting member, said second torque-transmitting mechanism selectively interconnecting said third member of said third planetary gearset with said interconnecting member, said third torque-transmitting mechanism selectively interconnecting said third member of said first planetary gearset with said third member of said third planetary gearset, said fourth torque-transmitting mechanism selectively interconnecting said third member of said first planetary gearset with said output shaft, and said fifth torque-transmitting mechanism selectively interconnecting said third member of said second planetary gearset with said third member of said third planetary gearset, or said first torque-transmitting mechanism selectively interconnecting said input shaft with said interconnecting member, said second torque-transmitting mechanism selectively interconnecting said third member of said first planetary gearset with said output shaft, said third torque-transmitting mechanism selectively interconnecting said third member of said first planetary gearset with said third member of said third planetary gearset, said fourth torque-transmitting mechanism selectively interconnecting said third member of said second planetary gearset with said input shaft, and said fifth torque-transmitting mechanism selectively interconnecting said third member of said second planetary gearset with said third member of said third planetary gearset, or said first torque-transmitting mechanism selectively interconnecting said third member of said third planetary gearset with said interconnecting member, said second torque-transmitting mechanism selectively interconnecting said input shaft with said interconnecting member, said third torque-transmitting mechanism selectively interconnecting said third member of said first planetary gearset with said third member of said third planetary gearset, said fourth torque-transmitting mechanism selectively interconnecting said input shaft with said third member of said first planetary gearset, and said fifth torque-transmitting mechanism selectively interconnecting said third member of said second planetary gearset with said output shaft, or said first torque-transmitting mechanism selectively interconnecting said third member of said third planetary gearset with said interconnecting member, said second torque-transmitting mechanism selectively interconnecting said input shaft with said interconnecting member, said third torque-transmitting mechanism selectively interconnecting said third member of said first planetary gearset with said third member of said third planetary gearset, said fourth torque-transmitting mechanism selectively interconnecting said third member of said first planetary gearset with said output shaft, and said fifth torque-transmitting mechanism selectively interconnecting said input shaft with said third member of said second planetary gearset, or said first torque-transmitting mechanism selectively interconnecting said third member of said third planetary gearset with said interconnecting member, said second torque-transmitting mechanism selectively interconnecting said input shaft with said interconnecting member, said third torque-transmitting mechanism selectively interconnecting said input shaft with said third member of said first planetary gearset, said fourth torque-transmitting mechanism selectively interconnecting said third member of said second planetary gearset with said third member of said third planetary gearset, and said fifth torque-transmitting mechanism selectively interconnecting said third member of said second planetary gearset with said output shaft, or said first torque-transmitting mechanism selectively interconnecting said third member of said third planetary gearset with said interconnecting member, said second torque-transmitting mechanism selectively interconnecting said interconnecting member with said output shaft, said third torque-transmitting mechanism selectively interconnecting said third member of said first planetary gearset with said third member of said third planetary gearset, said fourth torque-transmitting mechanism selectively interconnecting said input shaft with said third member of said second planetary gearset, and said fifth torque-transmitting mechanism selectively interconnecting said third member of said second planetary gearset with said output shaft, or said first torque-transmitting mechanism selectively interconnecting said third member of said third planetary gearset with said interconnecting member, said second torque-transmitting mechanism selectively interconnecting said interconnecting member with said output shaft, said third torque-transmitting mechanism selectively interconnecting said third member of said first planetary gearset with said output shaft, said fourth torque-transmitting mechanism selectively interconnecting said input shaft with said third member of said second planetary gearset, and said fifth torque-transmitting mechanism selectively interconnecting said third member of said second planetary gearset with said third member of said third planetary gearset.