Method for operating an internal combustion engine having exhaust gas recirculation
US8196569B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2008 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Feb 22, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a method for operating an internal combustion engine having exhaust gas recirculation, air is supplied to at least one combustion chamber via an intake manifold at least partially closable with the aid of a final control element, and a part of the exhaust gases flowing into an exhaust pipe is conducted via an EGR channel, which is at least partially closable with the aid of an EGR valve unit, into an area of the intake manifold, which lies between the final control element and the combustion chamber. A first variable, which characterizes the mass flow of the gas conducted through the EGR channel, is ascertained from a set of state variables of the internal combustion engine, which apply for an operating state in which the engine is in overrun operation and the final control element is essentially closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.