Patent ID: 8876651
Filing Date: 2014-11-04
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; three interconnecting members continuously interconnecting a member of the first, second, third and fourth planetary gear sets with another member of the first, second, third and fourth planetary gear sets; and six torque transmitting mechanisms wherein four of the six torque transmitting mechanisms are each selectively engageable to interconnect at least one of the first, second and third members with at least one other of the first, second, third members and wherein two of the six torque transmitting mechanisms are each selectively engageable to interconnect at least one of the first, second and third members with a stationary member, and wherein the six torque transmitting mechanisms are selectively engageable in combinations of at least four to establish a plurality of forward speed ratios and at least one reverse speed ratio between the input member and the output member, a first of the six torque transmitting mechanisms is selectively enqaqeable to interconnect the second member of the second planetary gear set and the input member with the third member of the fourth planetary gear set, and a second of the six torque transmitting mechanisms is selectively enqaqeable to interconnect the third member of the fourth planetary gear set with the first member of the first planetary gear set.