Patent · US Expired

Gas sensor for determining the concentration of gas components in gas mixtures and use thereof

US7052595B2 · kind B2 · utility

3Cited by

4References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Thomas Schulte · Paderborn, DE
Thomas Wahl · Pforzheim, DE
Bernd Mueller · Leonberg, DE

Key dates

Filing date	Dec 9, 2000
Grant date	May 30, 2006
Priority date	—
Expiry date	Feb 1, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/4074
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A gas sensor for determining the concentration of gas components in gas mixtures is used in particular to measure the concentration of nitrogen oxides in exhaust gases of internal combustion engines or in the interiors of motor vehicles. It contains an electrochemical measuring cell which includes a first electrode situated on a solid electrolyte and an additional electrode. The electrode is made of an oxide material containing lanthanum which at least catalytically decomposes nitrogen oxides. The pump current flowing between the electrodes is used as a measure of the nitrogen oxide concentration in the gas mixture.

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