Patent ID: 6626791
Filing Date: 2003-09-30
Classification: F16H

Abstract:
A transmission comprising:an input shaft; an output shaft; first, second and third planetary gear sets each having first, second and third members; said input shaft being continuously interconnected with said second member of said third planetary gear set, said output shaft being continuously interconnected with said third member of said third planetary gear set; a first interconnecting member continuously interconnecting said first members of said first, second and third planetary gear sets to each other for co-rotation with each other; a second interconnecting member continuously interconnecting said second member of said first planetary gear set with a stationary transmission housing; a first torque transmitting mechanism implemented as a clutch selectively interconnecting said third member of said first planetary gear set with said second or third member of said second planetary gear set; a second torque transmitting mechanism implemented as a clutch selectively interconnecting said second member of said second planetary gear set with said second member of said third planetary gear set; a third torque transmitting mechanism implemented as a clutch selectively interconnecting said second member of said second planetary gear set with said third member of said third planetary gear set; a fourth torque-transmitting mechanism selectively interconnecting said third member of said second planetary gear set with said third member of said first planetary gear set, or with said transmission housing, said members interconnected by said fourth torque transmitting mechanism being different from the members interconnected by said first torque-transmitting mechanism; and said first, second, third and fourth torque-transmitting mechanisms being engaged in combinations of two to establish at least five forward speed ratios and a reverse speed ratio between said input shaft and said output shaft.