Particulate sensor and method for operating a particulate sensor

US7832254B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Harald Guenschel · Baunach, DE
• Uwe Glanz · Asperg, DE
• Stefan Zimmermann · Laufenbürg, DE
• Leonore Schwegler · Stuttgart, DE
• Juergen Sindel · Lambach, DE

Key dates

• Filing date: Sep 9, 2005
• Grant date: Nov 16, 2010
• Expiry date: Nov 5, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2015/0046
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A sensor for determining the concentration of particulates in gas mixtures is described, a soot sensor in particular, having a ceramic sensor body surrounded by a metallic housing and having a first and a second measuring electrode. In this instance, the first measuring electrode is connected to the metallic housing of the sensor or the metallic housing of the sensor is designed as the first measuring electrode. By additional electrodes on the ceramic body, the sensor is operable also as a lambda sensor.