| 摘要 |
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 (20,30,40,50), two input clutches (62,63), eight or nine torque transmitting mechanisms and four fixed interconnections (74,76,78,79). The invention provides a low content multi-speed dual clutch transmission mechanism wherein the two input clutches (62,63) alternately connect the engine (12) to realize odd and even number speed ratio ranges. The torque transmitting mechanisms provide connections between various gear members, the fixed interconnections (74,76,78,79), the input shaft (17), the output shaft (19), and the transmission housing (80), and are operated in combinations of three to establish at least five forward speed ratios and at least one reverse speed ratio. <IMAGE>
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