Patent · US Active

Internal combustion engine and method for operating an internal combustion engine

US7707998B2 · kind B2 · utility

4Cited by

8References

12Claims

0Family size

Assignee

AUDI AG · DE

Inventors

Thomas Reuss · Fürstenau, DE
Martin Gruber · Schwandorf, DE
Axel Macher · Neudenau, DE

Key dates

Filing date	Dec 5, 2007
Grant date	May 4, 2010
Priority date	—
Expiry date	Jan 19, 2028

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, in which the exhaust gas generated by the internal combustion engine is returned to the internal combustion engine by means of an exhaust gas recirculation device having at least two cooling devices which are each associated with a bypass, the exhaust gas being cooled in the exhaust gas recirculation device as a function of the load state of the internal combustion engine. The operation of the internal combustion engine is divided into at least four load states, and as a function of the instantaneous load state the exhaust gas is returned to the internal combustion engine via a flow path in the exhaust gas recirculation device specifically assigned to this load state. The invention further relates to an internal combustion engine having an exhaust gas recirculation device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.