Patent · US Active

Method for condition determination of an exhaust-gas purification system

US9540984B2 · kind B2 · utility

2Cited by

3References

14Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Martin Roesch · Rodgau, DE
Martin Votsmeier · Bruchköbel, DE
Ralf Moos · Friedrichshafen, DE
Gerhard Fischerauer · Bayreuth, DE
Gunter Hagen · Helmbrechts, DE
Sebastian Reiss · Reutlingen, DE

Key dates

Filing date	Jul 12, 2012
Grant date	Jan 10, 2017
Priority date	—
Expiry date	Feb 19, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The present invention relates to a process for determining the state of an exhaust-gas purification device. The exhaust-gas purification device is one which can store gas and/or particles. By means of the proposed process, it is for example possible for the loading state of the exhaust-gas aftertreatment system, for example the oxygen storage state of a catalytic converter which is provided with an oxygen-storing material, such as for example a three-way catalytic converter, to be analyzed. The present process operates contactlessly through the analysis of resonances which arise upon the excitation of the catalytic converter using the purification device as microwave cavity resonator.

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