Multi-speed transmission with integrated electric motor
US8944949B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2011 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Nov 2, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An automatic transmission includes an input shaft or member, an output shaft or member and three simple and one compound planetary gear assemblies each including a sun gear, a planet gear carrier with a plurality of planet gears and a ring gear. The input shaft or member is coupled to the sun gear of the second planetary gear assembly and the output shaft is coupled to the planet gear carrier of the fourth planetary gear assembly. An electric motor is coupled to and drives the sun gear of the fourth planetary gear assembly. The transmission also includes six torque transmitting devices: four friction brakes and two friction clutches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.