Internal-combustion and burnt gas scavenging supercharged engine with at least two intake means
US7584744B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 28, 2007 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | Nov 28, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to an indirect-injection internal-combustion engine, notably a supercharged engine, in particular of spark-ignition type, that can run according to a burnt gas scavenging mode or to a conventional mode, comprising at least one cylinder (10) with a combustion chamber (12), at least two air intake means (14, 16), one (14) of the means being a burnt gas scavenging intake means and the other (16) being a fuel injection intake means. The means comprising each a pipe (18, 20) controlled by an intake valve (22, 24), at least one burnt gas exhaust means with an exhaust valve (34) associated with an exhaust pipe (36) and at least one fuel injection means (26). According to the invention, the fuel injection means comprises an injector (26) with two nozzles (28, 30) allowing, when the engine runs in scavenging mode, the injection intake means (16) to be supplied with fuel through one (30) of the nozzles only and, when the engine runs under conventional conditions, scavenging intake means (14) and injection intake means (16) are respectively supplied with fuel through nozzles (28, 30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.