Patent · US Expired

Sensor for analyzing gases

US6544394B1 · kind B1 · utility

2Cited by

5References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Rainer Strohmaier · Stuttgart, DE
Carsten Springhorn · Stuttgart, DE
Detlef Heimann · Gerlingen, DE
Thomas Wahl · Pforzheim, DE
Margret Schuele · Weil der Stadt, DE
Bernd Schumann · Rutesheim, DE
Bernhard Bloemer · Stuttgart, DE

Key dates

Filing date	Nov 30, 2000
Grant date	Apr 8, 2003
Priority date	—
Expiry date	Nov 30, 2020

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/419
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A sensor for determining gas components and concentrations in a gas mixture that is particularly suitable for analyzing HC, NOx and CO in exhaust gases of internal combustion engines in the sensor, an outer electrode, that is separated from an MOx electrode by an electrolyte layer, is applied on a substrate. In this context, the outer electrode and the MOx electrode are in communication with the gas mixture to be analyzed. In addition, the outer electrode contains a region that is in contact with a gas-permeable tunnel layer which in turn contains a region that is directly exposed to the gas mixture to be analyzed, so that the gas to be analyzed can be supplied to the outer electrode via the gas-permeable tunnel layer.

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