Exhaust manifold arrangement
US7150273B2 · kind B2 · utility
2Cited by
37References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2005 |
| Grant date | Dec 19, 2006 |
| Priority date | — |
| Expiry date | Aug 19, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A passageway is provided between branches of a multi-branch exhaust manifold to reduce the amount of backflow (iEGR) into the cylinders at low engine speeds. The passage is located upstream of the turbocharger and can be at the part of the manifold where the branches merge for entry into the turbo. The passageway allows exhaust pressure pulse modulation so that high iEGR levels (using iEGR through delayed exhaust valve closing for example) are avoided. The passage may be controllable to modulate the effect based on engine conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.