Multi-mode powersplit hybrid transmission
US9643481B2 · kind B2 · utility
15Cited by
20References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 2015 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Sep 14, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/91
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A family of hybrid electric transmissions operate in at least three modes based on selective engagement of shift elements. In a low mode, torque in a mechanical power flow path is multiplied for better low speed performance. At higher vehicle speeds, the transmission shifts into a high mode to improve efficiency. Some embodiments include a reverse mode. In other embodiments, a series mode may be used in reverse. The shift elements may include friction clutches, positive engagement clutches, and controllable one way clutches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.