Vehicle transmission
US10344836B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 4, 2017 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Dec 13, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2046
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Disclosed is a vehicle transmission capable of improving fuel economy and performance of a vehicle with an increased number of gear stages. The vehicle transmission includes three simple planetary gear sets and one compound planetary gear set or includes five simple planetary gear sets. A shifting operation is performed by changing speed and direction of rotation of gears in a manner of selectively connecting and disconnecting rotary elements of the gear sets and a plurality of friction members. The vehicle transmission provides ten or more forward speed ratios and one or more reverse speed ratios through this shifting operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.