Patent ID: 8333677
Filing Date: 2012-12-18
Classification: F16H

Abstract:
1. A transmission comprising: an input member; an output member; first, second, third and fourth planetary gear sets each having first, second and third members; a first torque transmitting mechanism selectively engageable to interconnect the first member of the third planetary gear set and the input member with the second member of the first planetary gear set; a second torque transmitting mechanism selectively engageable to interconnect the first member of the third planetary gear set and the input member with the first member of the fourth planetary gear set; a third torque transmitting mechanism selectively engageable to interconnect the second member of the third planetary gear set with the first member of the fourth planetary gear set; a fourth torque transmitting mechanism selectively engageable to interconnect the third member of the fourth planetary gear set and the output member with the third member of the second planetary gear set; and a fifth torque transmitting mechanism selectively engageable to interconnect the second member of the third planetary gear set with a stationary element, and wherein the torque transmitting mechanisms are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.