Hybrid electric motor vehicle and a final drive unit therefor
US7694773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2007 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Oct 8, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a motor vehicle having an internal combustion engine driving a front final drive unit connected to a pair of front wheels and a pair of rear wheels 21 driven through the rear final drive unit 18 by a longitudinal propshaft 19, the rear final drive unit 18 houses a transversely arranged electric motor/generator 35. The motor/generator 35 has a hollow rotor 36 which is connected to a spur input gear 64 of a layshaft reduction gear train 65 through a hollow shaft 37. This input gear 64 meshes with a large diameter spur gear 66 fixed on a layshaft 67 which also has a small diameter spur gear 68 fixed on it. The small diameter spur gear 68 meshes with a large diameter driving gear 69 fast with a differential 28 which drives the rear wheels by means of the drive shafts 22, one of which extends concentrically through the rotor 36 and the hollow shaft 37. A control clutch 33 controllably couples the propshaft 19 to an input shaft 32 which drives a final drive bevel pinion 31 which meshes with a crownwheel 27 fast with the large diameter spur gear 66. The layshaft 67 provides a reduction ratio between the motor/generator 35 and the final drive pinion 31 and the differential 28 as well as…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.