MULTI-SPEED TRANSMISSION

摘要

A transmission is provided having an input member, an output member, at least four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and a brake actuatable in combinations of four to establish a plurality of forward gear ratios and at least one reverse gear ratio.

主权项

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; four 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 seven torque transmitting mechanisms wherein five of the seven 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 a common structural member and wherein two of the seven 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 seven 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.