Patent · US Active

Exhaust-gas recirculation device and method for operating an exhaust-gas recirculation device

US7520273B2 · kind B2 · utility

4Cited by

10References

2Claims

0Family size

Assignee

VOLKSWAGEN AKTIENGESELLSCHAFT · DE

Inventors

Achim Freitag · Bitterfeld-Wolfen, DE
Jörn Müller · Sickte, DE
Lothar Nee · Wolfsburg, DE
Werner Aberle · Leiferde, DE

Key dates

Filing date	Mar 13, 2007
Grant date	Apr 21, 2009
Priority date	—
Expiry date	Mar 13, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An exhaust-gas recirculation device for an internal combustion engine, in particular for a diesel engine of a passenger car, includes an air-supply line connected to an air inlet of the internal combustion engine and includes an exhaust-gas line connected to an exhaust-gas outlet of the internal combustion engine. A turbine, which drives a compressor disposed in the air-supply line, is disposed in the exhaust-gas line. The exhaust-gas line is connected to the air-supply line via an exhaust-gas recirculation line branching off in flow direction behind the turbine. An adjustable throttle is disposed in the air-supply line in flow direction in front of the compressor in order to achieve higher exhaust-gas recirculation rates. A method for operating an exhaust-gas recirculation device for an internal combustion engine is also provided.

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