Drive train of vehicle, has seven torque transmitting devices that are selectively engageable to produce several forward speed ratios and reverse speed ratio between input and output elements

摘要

The drive train has transmission housing (50) with first planetary gear set (14), second planetary gear set, third planetary gear set (18) and fourth planetary gear set (20). The fourth gear set is arranged adjacent to first housing end wall, while third gear set is provided adjacent to fourth gear set. The second gear set is arranged adjacent to third gear set, while first gear set is arranged adjacent to second gear set. The seven torque transmitting devices are selectively engageable to produce forward speed ratios and reverse speed ratio between input and output elements (12,22). A first interconnecting element is provided for continuously interconnecting first element of first gear set with second element of second planetary gear set, while second interconnecting element is provided for continuously interconnecting the second element of first gear set with third element of third gear set. The third interconnecting element is provided for continuously interconnecting the third element of second planetary gear set with second element of third planetary gear set, while a fourth interconnecting element is provided for continuously interconnecting the second element of third gear set with second element of fourth gear set.