Four-wheel drive vehicle control system and methods
US10144284B2 · kind B2 · utility
8Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2017 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | May 29, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Y2300/18008
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided for operating a four-wheel drive powertrain of a vehicle. In one example, a method may comprise: in response to a desired shift from a four-wheel drive mode to a two wheel-drive mode: decreasing a transfer case torque output to a secondary driveline to a lower first level and disengaging a disconnect device of the secondary driveline; increasing the transfer case torque output from the lower first level to a higher second level over a duration; and after the duration, reducing the transfer case torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.