Patent · US Active

Method and a device for operating a internal combustion engine

US7997257B2 · kind B2 · utility

1Cited by

5References

20Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Krzysztol Korbel · Regensburg, DE
Gerd Roesel · Regensburg, DE
Nobert Sieber · Herzogenaurach, DE

Key dates

Filing date	Mar 13, 2009
Grant date	Aug 16, 2011
Priority date	—
Expiry date	Jan 4, 2030

Classification

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

Abstract

For operating a internal combustion engine a first characteristic value is determined depending on a distance integral of at least a portion of a control signal of an oxygen sensor control based on control reference signal characteristics across a given time period. Depending on the first characteristic value (KW—1) a quality value (GW—1) is determined. Depending on the quality value (GW1) either the existence or the non existence of an error of the exhaust sensor is detected.

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