Exhaust emission control device of internal-combustion engine
US6751949B2 · kind B2 · utility
12Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2002 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Sep 27, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
At the start of operation of an internal-combustion engine (S10,S12,S14), an exhaust flow is restrained (to raise the exhaust pressure) (S18), secondary air is supplied (S20), and the combustion air-fuel ratio (A/F) is set within the range of rich air-fuel ratios (S16, S22).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.