Exhaust purification device for intracylindrical injection-type spark-ignition internal combustion engine
US6729123B2 · kind B2 · utility
5Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2002 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Aug 28, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
When an internal combustion engine is in a cold state (S12), fuel is injected during compression stroke with burn air/fuel ratio controlled so as to produce a slight lean air/fuel mixture equivalent to or slightly leaner than a stoichiometric air/fuel mixture (compression S/L operation) (S14), and also exhaust gas flow is restrained (S16).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.