Method of controlling recirculation of the exhaust gas of an internal-combustion supercharged engine and engine using such a method
US7159581B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 2005 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Mar 18, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a method of controlling recirculation of part of the exhaust gas of an internal-combustion supercharged engine with a combustion cycle during which at least one cylinder (10) of the engine is in the intake phase simultaneously with at least one other cylinder (14) in the exhaust phase, the cylinders comprising at least one intake means (18) with an intake valve (20) and at least one exhaust means (24) with an exhaust valve (26), said engine further comprising an exhaust manifold (32) connecting said exhaust means.According to the invention, the method consists, when the engine works with a lean fuel mixture, in controlling opening of the exhaust valve (26) of cylinder (10) in the intake phase so as to introduce part of the exhaust gas coming from cylinder (14) in the exhaust phase and contained in manifold (32).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.