Eight-speed transmissions are provided that include four planetary gear sets having seven
torque-transmitting mechanisms and various fixed interconnections to provide eight forward …

The transmission has a plurality of members that can be utilized in powertrains to provide at
least nine forward speed ratios and one reverse speed ratio. The transmission includes four …

4,070,927 A 1, 1978 Polak 4,709,594 A 12/1987 Maeda 5,106,352 A 4/1992 Lepelletier
5,385,064 A 1/1995 Reece 5,497.867 A 3, 1996 Hirsch et al. 5,560,461 A 10, 1996 Loeffler …

The preferred embodiment of the present invention pro vides an improved transmission
having four planetary gear sets controlled to provide at least nine forward speed ratios and …

It is an object of the present invention to provide an improved nine speed transmission
having four planetary gear sets controlled to provide nine forward speed ratios and a …

ENGINE fixed interconnections. The powertrain includes an engine and torque converter
that is continuously connected to one of the planetary gear members and an output member …

The transmission has a plurality of members that can be utilized in powertrains to provide
ten forward speed ratios and one reverse speed ratio. The transmission includes four …

The transmission has a plurality of members that can be utilized in powertrains to provide at
least ten forward speed ratios and one reverse speed ratio. The transmission includes four …

The transmission has a plurality of members that can be utilized in powertrains to provide
ten forward speed ratios and one reverse speed ratio. The transmission includes four plan …

A transmission is provided having four planetary gearsets, each having respective first,
second, and third members, and a plurality of selectively engageable torque transmitting …