Methods and systems for engine-off disengagement of a vehicle park state
US10479343B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2017 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Jan 20, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/93
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided for launching a vehicle in an electric-only mode of operation. In one example, a driveline operating method comprises engaging a parking pawl to an output shaft of a dual clutch transmission in response to a request to engine a vehicle into a parked state, and disengaging the parking pawl via rotating an engine via an integrated starter/generator in response to a request to propel the vehicle solely via power of an electric machine positioned downstream of the dual clutch transmission. In this way, the vehicle may be launched in the electric-only mode without activating the engine in a fueled mode of operation and then deactivating the engine, which may increase vehicle operator satisfaction and which may improve fuel economy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.