Hybrid electric vehicle control apparatus for maximizing vehicle engine operating efficiency
US6173574A · kind A · utility
31Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1999 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Jul 6, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/91
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A control apparatus for a hybrid electric vehicle that minimizes vehicle fuel-consumption. A fuel consumption coefficient relating to overall efficiency of a hybrid engine is calculated. An engine operating point whereat this fuel-consumption coefficient is optimized is then determined, and the engine is controlled to operate at the determined engine operating point. When such control is performed, overall engine efficiency in all operating regions can be optimized, and further improvements in fuel consumption can be realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.