Limp-home control method for hybrid vehicle
US11130486B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 22, 2019 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Mar 23, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A limp-home control method for a hybrid vehicle may include: a fault determination step for determining, by a controller, whether a solenoid valve battery short circuit fault occurs in a transmission; a first limp-home step for controlling, by the controller, solenoid valves to implement a limp-home gear stage while maintaining a state where power is suppliable to the solenoid valves involved in shifting gears when it is determined that the solenoid valve battery short circuit fault exists; an engine necessity verification step for verifying, by the controller, whether engagement of an engine clutch is needed; and a second limp-home step for driving, by the controller, a solenoid valve controlling the engine clutch to engage the engine clutch, implementing limp-home driving by engine power when the engagement of the engine clutch is needed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.