Patent · US Expired

Device for determining the exhaust gas recirculation rate of an internal combustion engine

US7100431B2 · kind B2 · utility

2Cited by

6References

6Claims

0Family size

Assignee

Daimlerchrysler AG · US

Inventors

Markus Amman · Waiblingen, DE
Nikolas Fekete · Stuttgart, DE
Dirk Herbstritt · Durmersheim, DE
Aleksandar Knezevic · Eitorf, DE
Ralf Müller · Geringswalde, DE
Carsten Plog · Markdorf, DE

Key dates

Filing date	Jan 19, 2005
Grant date	Sep 5, 2006
Priority date	—
Expiry date	Jan 19, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a device for determining an exhaust gas recirculation rate (EGR) in an internal combustion engine, wherein the device includes a sensor unit, which in a first region is exposed to an exhaust-gas atmosphere from an exhaust gas recirculation line and in a second region is exposed to an exhaust gas/fresh air atmosphere in an intake line of the internal combustion engine downstream of a location where the exhaust gas recirculation line opens into the intake line, the sensor unit disposed in the intake line is tubular with the inner side of the sensor unit being exposed to the exhaust gas atmosphere and the outer side of the sensor unit being exposed to the exhaust gas/fresh air atmosphere. The sensor unit is preferably positioned centrally within the intake line away from the wall of the intake line.

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