Method of controlling an EGR valve integrated in an EGR circuit of a combustion engine
US9109522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2012 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Aug 23, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method of controlling a combustion engine (1) comprising at least one cylinder (2) and a manifold (3) and an exhaust gas recirculation (EGR) circuit including an EGR valve. The EGR valve (6) is controlled by carrying out the following stages: a) measuring a pressure difference ΔP in a portion of the exhaust gas recirculation circuit including the EGR valve; b) selecting a burnt gas fraction set point BGRsp in the intake manifold (3); c) calculating an opening set point for the EGR valve (6) from a pressure drop relation applied in a portion of the exhaust gas recirculation circuit including the EGR valve, depending on difference ΔP at the EGR valve and on the burnt gas fraction set point BGRsp in the intake manifold; and d) controlling the EGR valve (6) as a function of the opening set point of EGR valve (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.