Multi-mode electromechanical variable transmission
US10982736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2019 |
| Grant date | Apr 20, 2021 |
| Priority date | — |
| Expiry date | Mar 16, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/917
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A drive system for a vehicle includes first and second electrical machines, a transmission, and an electrical energy supply. The transmission includes first and second gear sets, a connecting shaft coupled to the first gear set, a driveshaft configured to transport power from the electrical machines to a tractive element of the vehicle, and a clutch. The first gear set is coupled to the first electrical machine. The second gear set is coupled to the second electrical machine. Carriers of the first and second gear sets are coupled. The clutch selectively rotationally couples the carriers to the driveshaft when engaged. The drive system operates in an electric only configuration whereby the electrical energy supply provides electrical energy to at least one of the electrical machines to drive at least one of the connecting shaft and the driveshaft without a mechanical energy input to the transmission from an engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.