Method and device for selecting a starting gear in a hybrid electric vehicle
US8504229B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2008 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Feb 10, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a method and device for selecting a starting gear in a hybrid electric vehicle, a first driving sequence is registered during which a parameter indicates that an electric motor energy source has been drained past an energy level limit and/or no gear ratio shift from said starting gear ratio has occurred. Upon detection of the driving sequence, draining of said energy source and/or no gear ratio shift, selection of a starting gear ratio is altered to a gear ratio being higher, compared to a normal starting gear ratio, for the next vehicle take off of a driving sequence following the first driving sequence. This increases possibility that the vehicle during driving with the altered starting gear will reach a vehicle speed that corresponds to a combustion engine speed above idle speed of the combustion engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.