Power transmission system of hybrid electric vehicle
US8905892B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2013 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Dec 2, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/902
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A power transmission system of a hybrid electric vehicle includes: an input shaft; a first shaft; a first planetary assembly on the first shaft, and including a first element connected to a first motor/generator, a second element connected to an output gear through a second shaft without rotational interference with the first shaft, and a third element connected to the input shaft; a second planetary assembly on the first shaft including a fourth element connected to a second motor/generator through the first shaft and selectively connected to the input shaft, a fifth element connected to the second element, and a sixth element selectively connected to a housing; transfer gears; and frictional elements selectively connecting one element of the second planetary assembly to the input shaft, directly coupling the second planetary assembly, or selectively connecting another element of the second planetary assembly to the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.