Patent · US Active

Method for monitoring a catalytic converter

US8806854B2 · kind B2 · utility

0Cited by

0References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Andreas Genssle · Musberg, DE
Torsten Handler · Stuttgart, DE
Tobias Pfister · Stuttgart, DE

Key dates

Filing date	Apr 5, 2012
Grant date	Aug 19, 2014
Priority date	—
Expiry date	Dec 7, 2032

Classification

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

Abstract

A method for monitoring the capability of a catalytic converter to convert nitrogen monoxide into nitrogen dioxide in the exhaust gas of an internal combustion engine, the catalytic converter being arranged in an exhaust gas duct of the internal combustion engine and the catalytic converter being followed downstream by a collecting particle sensor. It is in this case provided that, in a monitoring cycle, a decrease in the particle loading of the particle sensor during the operation of the internal combustion engine under predetermined operating conditions is taken to conclude an adequate capability of the catalytic converter to convert from nitrogen monoxide to nitrogen dioxide.

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