Sensor for detecting particles in a gas stream and method for its manufacture

US7574895B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Frank Schnell · Gerlingen, DE
• Ralf Schmidt · Nuremberg, DE
• Uwe Glanz · Asperg, DE
• Sabine Rösch · Ditzingen, DE
• Helmut Marx · Würzburg, DE
• Katharina Schaenzlin · Rottenburg am Neckar, DE
• Henrik Schittenhelm · Stuttgart, DE

Key dates

• Filing date: Sep 7, 2004
• Grant date: Aug 18, 2009
• Expiry date: Mar 19, 2025

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49007
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A soot particle sensor for an exhaust system of an internal combustion engine includes a first electrode device and a second electrode device. The electrode devices are situated at a distance from one another and are able to be exposed to the gas stream, at least in some areas. It is provided that the electrode devices are separated from each other by an intermediate layer made of an electrically insulating material, and the electrode devices have free edges that are set apart from each other by the thickness of the intermediate layer and are able to be exposed to the gas stream.