Series/parallel turbochargers and switchable high/low pressure EGR for internal combustion engines
US7165403B2 · kind B2 · utility
49Cited by
15References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2004 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Jul 28, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Systems and methods for turbocharging an internal combustion engine include operating two turbochargers in a series configuration for a first operating region and a parallel configuration for a second operating region. Systems and methods for controlling exhaust gas recirculation (EGR) in a turbocharged internal combustion engine provide low pressure EGR upstream of a compressor inlet for a first operating region and high pressure EGR downstream of a compressor outlet for a second operating range to further improve turbocharger operating margin and overall efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.