Method for operating an internal combustion engine
US8511288B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 19, 2010 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Feb 22, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for operating an internal combustion engine (1) with two-stage turbocharging by a low-pressure exhaust gas turbine (6) and a high-pressure exhaust gas turbine (7), the low-pressure exhaust gas turbine (6) being positioned downstream of the high-pressure exhaust gas turbine (7) in the exhaust system (3) of the internal combustion engine (1), and the high-pressure exhaust gas turbine (7) being provided with a bypass line (11) with a control valve (12). In order to achieve quick response of the internal combustion engine (1) in transient operation, it is provided that continuously or periodically at certain intervals preferably an electronic control unit will check whether a steady-state or a transient operating state of the internal combustion engine (1) is prevailing, and that the control valve (12) is controlled in accordance with at least one steady-state characteristic map (32, 33) in the steady-state case and in accordance with at least one transient characteristic map (31) or a transient function in the transient case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.