Torque vectoring drive axle assembly
US6962227B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 2004 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | Jun 12, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H48/30
- 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, and a pair of mode clutches 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 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.