Two-stage supercharging system with exhaust gas purification device for internal-combustion engine and method for controlling same
US8495876B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2010 |
| Grant date | Jul 30, 2013 |
| Priority date | — |
| Expiry date | Sep 15, 2031 |
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 two-stage supercharging system for an internal-combustion engine (10) comprising at least one cylinder (12) with an intake distributor (16) and an exhaust manifold (18), as well as a recirculation line (78) for recycling the exhaust gas to the intake of said engine, said system comprising a high-pressure supercharging stage (22) with a turbocharger including an expansion turbine (26) connected to a compressor (30) and a low-pressure supercharging stage (24) with a turbocharger including an expansion turbine (28) connected to a compressor (32), and exhaust gas purification means arranged between exhaust outlet (40) and turbine (26) of the high-pressure turbocharger.According to the invention, the system comprises an exhaust gas bypass branch (70) going from outlet (40) of the engine exhaust and ending at turbine (28) of low-pressure turbocharger (24).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.