Mode changeover control device for a hybrid vehicle
US8060266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2007 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Sep 13, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A mode changeover control device for a hybrid vehicle includes an engine, a motor/generator and at least one driving wheel. A changeover between an electric drive mode using only the electric motor to power the at least one driving wheel and a hybrid drive mode using both the engine and the electric motor to power the at least one driving wheel is controlled. The drive mode is changed from the hybrid drive mode to the electric drive mode if the accelerator opening is less than a first threshold level, and the drive mode is changed from the electric drive mode to the hybrid drive mode if the accelerator opening is greater than a second threshold level. A hysteresis value is defined between the first threshold level and the second threshold level, and the hysteresis value is changed based on a vehicle operating state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.