Patent · US Active

Method and device for diagnosing at least one exhaust gas sensor of an internal combustion engine disposed in an exhaust duct

US11940350B2 · kind B2 · utility

0Cited by

4References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Bernd Kraewer · Winnenden, DE
Magnus Labbe · Heubach, DE
Maik Unverricht · Rutesheim, DE
Simon Fass · Denkendorf, DE

Key dates

Filing date	Oct 25, 2022
Grant date	Mar 26, 2024
Priority date	—
Expiry date	Oct 25, 2042

Classification

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

Abstract

Method for diagnosing at least one exhaust gas sensor (22;24;26) of an internal combustion engine (10) disposed in an exhaust duct (21), where ambient air (12) is actively introduced into the exhaust duct (21) by means of a device (27), when an operating state is present in which the internal combustion engine (10) does not produce an exhaust gas mass flow, and the diagnosis of the at least one exhaust gas sensor (22;24;26) disposed in the exhaust duct (21) is subsequently carried out.

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