Method and arrangement in a hybrid vehicle for maximizing efficiency by operating the engine at sub-optimum conditions
US6500089B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2000 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Nov 30, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Method for optimizing the operational efficiency of a hybrid electric vehicle is disclosed. The method comprises operating an engine of a hybrid electric vehicle preferentially on an optimized power curve of the engine for maximizing the efficiency of the engine and sensing a state-of-charge (SOC) condition of a battery of the hybrid electric vehicle being at a preferential value indicative of no additional charging being desired. The running torque of the engine is reduced below the optimized torque curve to a point that the power produced by the engine is substantially equal to the power demanded for driving the hybrid electric vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.