Electrochemical sensor for ascertaining gas concentrations in gases

US6613207B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Claudio De La Prieta · Stuttgart, DE
• Jens Schneider · Anderson, US
• Carsten Springhorn · Stuttgart, DE
• Thomas Schulte · Paderborn, DE
• Olaf Jach · Eppelheim, DE
• Ulrich Eisele · Stuttgart, DE
• Carmen Schmiedel · Marbach am Neckar, DE
• Lothar Diehl · Stuttgart, DE

Key dates

• Filing date: Dec 14, 1999
• Grant date: Sep 2, 2003
• Expiry date: Dec 14, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/4071
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An electrochemical sensor for ascertaining gas concentrations in gases, particularly in exhaust gases of combustion engines, includes an oxygen-ion-conductive solid electrolyte which is provided with electrode layers arranged at a distance from one another and with at least one resistance heating element that is separated from the solid electrolyte by an electrical insulating layer, a foil binder layer being provided between the electrical insulating layer and the solid electrolyte. At least one electron-conductive intermediate layer is provided between the electrode-side electrical insulating layer and the adjacent solid electrolyte.