Planetary gear train of automatic transmission for vehicles
US10012293B2 · kind B2 · utility
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1References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 9, 2016 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Dec 9, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2048
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A planetary gear train of an automatic transmission for a vehicle is disclosed. The planetary gear train provides ten forward speed stages and one reverse speed stage by combining four planetary gear sets with seven control elements. The planetary gear train includes an input shaft, an output shaft, four planetary gear sets, eight shafts interconnecting rotation elements of the four planetary gear sets, four clutches, and three brakes for controlling operation of the planetary gear train. The planetary gear train is configured to have a gear ratio span greater than 10.0 while securing linearity of step ratios of shift stages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.