Patent · US Expired

Exhaust gas recirculation device

US7798135B2 · kind B2 · utility

9Cited by

12References

14Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Ulrich Bischofberger · Eßlingen, DE
Rafael Weisz · Waiblingen, DE
Andreas Gruner · Uhingen, DE

Key dates

Filing date	Mar 11, 2006
Grant date	Sep 21, 2010
Priority date	—
Expiry date	Mar 11, 2026

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M35/10222
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to an exhaust gas recirculation device (1) for an internal combustion engine, in particular in a motor vehicle, having an exhaust gas recirculation line (2) for introducing exhaust gas into a primary intake line (4), with an exhaust gas recirculation valve (3) for controlling the exhaust gas recirculation line (2). The exhaust gas recirculation line (2) has an end section (7) which runs into the primary intake line (4) with an orifice opening (8). In order to improve the reliability of the exhaust gas recirculation device (1), the exhaust gas recirculation valve (3) has a sleeve (10) arranged in the fresh air line (4), said sleeve (10) enclosing the exhaust gas recirculation line (2) in the region of the orifice opening (8), being mounted in the fresh air line (4) so as to be axially adjustable, and presenting a radial internal nozzle contour (11) with a flow cross section which first decreases and then increases in size in the flow direction, the exhaust gas recirculation valve (3) having an actuating device (12) for axially adjusting the sleeve (10) relative to the primary intake line.

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