Planetary gear train of automatic transmission for vehicles
US9618090B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2015 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Oct 16, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2046
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque of an engine, an output shaft outputting changed torque, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first rotation shaft selectively connected to a transmission housing, a second rotation shaft, a third rotation shaft selectively connected to the transmission housing, a fourth rotation shaft, a fifth rotation shaft directly connected to the input shaft, a sixth rotation shaft selectively connected to the fourth rotation shaft or the fifth rotation shaft, a seventh rotation shaft selectively connected to the fourth rotation shaft, and an eighth rotation shaft directly connected to the output shaft, and selectively connected to the seventh rotation shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.