Hybrid road grade determination system
US8620498B2 · kind B2 · utility
4Cited by
13References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2006 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Nov 30, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method of regulating operation of a hybrid vehicle traveling on a surface having a grade includes determining a drive force of the hybrid vehicle, calculating a brake pressure value and determining whether a grade freeze condition exists based on the brake pressure value. The method further includes calculating a grade value of the surface based on the drive force when the freeze condition does not exist and regulating operation of the hybrid vehicle based on the grade value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.