Automatic engine stop and start system
US6754579B2 · kind B2 · utility
55Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2002 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Aug 20, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine automatic stop and start system monitors a booster negative pressure and a braking operation. A combination of the booster negative pressure and the brake operation can effectively indicate that a booster negative pressure will be insufficient to ensure a brake function. The controller evaluates the booster negative pressure and the brake operation, and restarts the engine when it is estimated that the booster negative pressure may be decreased below a threshold. As a result, it is possible to restart the engine before the booster negative pressure is decreased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.