Multi-speed transmission with at least one selectable one-way clutch
US8371982B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2011 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Aug 22, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2084
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A transmission has four planetary gear sets, four interconnecting members and six torque-transmitting mechanisms selectively engageable in different combinations of three to establish at least eight forward speed ratios. A first of the six torque-transmitting mechanisms is selectively engageable to connect the second member of the first planetary gear set to the stationary member. A second of the six torque-transmitting mechanisms is selectively engageable to connect the input member for common rotation with the second member of the third planetary gear set. At least one of the first and the second of the six torque-transmitting mechanisms is a selectable one-way clutch configured to have a first operating mode and a second operating mode, either of which modes may be selected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.