Multi-speed transmission with stacked planetary gear sets
AssigneeGM Global Technology Operations LLC
InventorAndrew W. Phillips
Life of this patent
Estimating the term…
Abstract
A multi-speed transmission is provided that has three planetary gear sets that have a plurality of members positioned to establish only two gear planes. Six torque-transmitting mechanisms are selectively engagable in different combinations to connect different members of the planetary gear sets with an input member, an output member, a stationary member, and one another to establish seven forward speed ratios and a reverse speed ratio. One of the gear planes is established by the first and the second planetary gear sets. The second planetary gear set is positioned concentric with and radially-outward of the first planetary gear set, and the first and second planetary gear sets share a member.
Claims18
A multi-speed transmission comprising:
- an input member;
- an output member;
- a stationary member;
- three planetary gear sets having a plurality of members positioned to establish only two gear planes;
- and
- six torque-transmitting mechanisms selectively engagable in different combinations to connect different members of the planetary gear sets with the input member, the output member, the stationary member, and one another to establish seven forward speed ratios and a reverse speed ratio.
A multi-speed transmission comprising:
- an input member;
- an output member;
- a first, a second, and a third planetary gear set;
- wherein the first and second planetary gear sets are radially stacked with respect to one another with a first member common to both;
- and
- six torque-transmitting mechanisms selectively engagable in different combinations to establish seven forward speed ratios and a reverse speed ratio.
Dependencies are inferred from the claim text.