Patent · US Expired

Method for adapting the detection of a measuring signal of a waste gas probe

US7331214B2 · kind B2 · utility

7Cited by

3References

17Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Reza Aliakbarzadeh · Regensburg, DE
Tino Arlt · Regensburg, DE
Gerd Rösel · Dresden, DE
Hong Zhang · Tegernheim, DE

Key dates

Filing date	Nov 23, 2004
Grant date	Feb 19, 2008
Priority date	—
Expiry date	Nov 23, 2024

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2250/14
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a waste gas probe which is disposed in an internal combustion engine, comprising a plurality of cylinders and injection valves associated with the cylinders, in order to measure fuel. The waste gas probe is arranged in a waste gas tract and the measuring signal thereof is characteristic for the air/fuel ratio in the respective cylinder. The measuring signal is detected in relation to a reference position of the piston of the respective cylinder at a predefined crankshaft angle and associated with a respective cylinder. A manipulated variable which is used to influence the air/fuel ration in the respective cylinder according to the measuring signal detected for the respective cylinder is produced by a controller. The predefined crankshaft angle is adapted according to an instability criterion of the controller.

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