The family of transmissions has a plurality of members that can be utilized
in powertrains to provide at least six forward speed ratios and one
reverse speed ratio. The transmission family members include four
planetary gear sets, two or three input clutches, seven, eight or nine
torque transmitting mechanisms and three fixed interconnections. The
invention provides a low content multi-speed dual clutch transmission
mechanism wherein the two input clutches alternately connect the engine to
realize odd and even speed ratio changes. The torque transmitting
mechanisms provide connections between various gear members, the fixed
interconnections, the input clutches, the output shaft, and the
transmission housing, and are operated in combinations of at least three
to establish at least five forward speed ratios and at least one reverse
speed ratio.
