Patent · US Active

Method for detecting the type of lambda probes

US9347903B2 · kind B2 · utility

0Cited by

3References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Claudius Bevot · Stuttgart, DE
Rolf Reischl · Stuttgart, DE
Thomas Classen · Herbertingen, DE
Benjamin Sillmann · Aschersleben, DE

Key dates

Filing date	May 18, 2011
Grant date	May 24, 2016
Priority date	—
Expiry date	Dec 8, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/4175
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Methods for detecting the type of lambda probes having at least two electrodes disposed on and/or in a solid electrolyte, of which at least one electrode is separated from a gas mixture by a diffusion barrier, and a pump current Ip being applied to at least one of the electrodes. Either the internal resistance of the lambda probe between the electrodes is determined and the type of probe is inferred on the basis of this resistance, or currents are impressed between the electrodes and the type of probe is inferred based on the voltages or resistance ratios thereby resulting.

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