Hybrid vehicle engine start control system
US9267481B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2011 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Jun 11, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/902
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
When there is a requirement on switching from the electrically driven drive mode to the hybrid drive mode by changing an accelerator position opening, the torque capacity is generated for the first clutch to start the engine. However, as torque capacity is at β1, the engine rotational speed is quickly increased to the high-speed region free of the influence of the compressive reactive force of the engine; once the engine rotational speed becomes the high-speed region, the engine rotational speed is decreased as torque capacity and is at β2. Consequently, it is possible to quickly pass through the low engine rotational speed region as the engine rotational speed torque is increased under the influence of the compressive reactive force, and avoiding the poor acceleration, as can be seen from the smooth variation of the time sequence increase of the transmission output rotational speed as indicated by β3, is possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.