Hybrid vehicle and associated engine speed control method
US8657045B2 · kind B2 · utility
13Cited by
12References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2012 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | Aug 16, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hybrid vehicle and method of control are disclosed wherein the ratio of engine speed to vehicle speed varies continuously in some operating conditions and is controlled to be one of a finite number of preselected ratios in other operating conditions. The transition from continuously variable mode to discrete ratio mode includes selecting a virtual gear number and increasing the engine speed to the corresponding ratio to vehicle speed. Once in a discrete ratio mode, the virtual gear number can vary automatically in response to changes in vehicle speed or in response to driver activation of shift selectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.