Torque distributing drive unit for motor vehicles
US7361113B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2005 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Oct 16, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K23/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A drive axle assembly includes a pair of axleshafts connected to a pair of wheels and a drive mechanism for selectively coupling a driven input shaft to one or both of the axleshafts. The drive mechanism includes first and second drive units that can be selectively engaged to control the magnitude of the drive torque transferred and the relative rotary speed between the input shaft and the axleshafts. Each drive unit includes a planetary gearset disposed between the input shaft and its corresponding axleshaft, a bi-directional overrunning clutch and a mode clutch that may be activated to cause the planetary gearset to establish different speed ratio drive connections between the input shaft and the axleshaft. A control system including an electronic control unit (ECU) and sensors are provided to control actuation of the mode clutches so as to control the side-to-side traction characteristics of the drive axle assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.