Patent · US Active

Method for operating an exhaust system of an internal combustion engine

US8839612B2 · kind B2 · utility

3Cited by

10References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Stefan Scherer · Büttelborn, DE
Markus Gloeckle · Stuttgart, DE
Tobias Pfister · Stuttgart, DE

Key dates

Filing date	Feb 23, 2012
Grant date	Sep 23, 2014
Priority date	—
Expiry date	Jul 15, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A method for operating an exhaust system of an internal combustion engine, wherein nitrogen oxide (NOx) is reduced by use of a SCR catalytic converter and wherein the ageing state of the SCR catalytic converter is monitored, characterized in that during a temporally limited phase having a high proportion of nitrogen oxide (NOx) in the exhaust gas, a conversion of said SCR catalytic converter is acquired and evaluated and the ageing state of said SCR catalytic converter is suggested therefrom.

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