Transmission having selectable power transfer shaft
US9573463B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2014 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Nov 15, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K17/35
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A front wheel drive transmission is adapted for all-wheel drive by the addition of a selectively engageable power take-off shaft. When a disconnect clutch is engaged, power may be transferred to rear wheels via a power take-off unit and a rear drive unit to improve vehicle mobility. When the disconnect clutch is disengaged, various components of the all-wheel drive system do not rotate, reducing parasitic losses and improving fuel economy. To provide packaging space for the disconnect clutch, the differential is moved to the left (driver side) of the driven transfer gear. A planetary differential, such as a double pinion planetary differential, is suitable for this location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.