Sensor for detecting particles

US7543477B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Joachim Berger · Bad Sobernheim, DE
• Rainer Strohmaier · Stuttgart, DE
• Detlef Heimann · Gerlingen, DE
• Norbert Breuer · Ditzingen, DE
• Ralf Wirth · Leonberg, DE
• Karl-Franz Reinhart · Weinsberg, DE
• Ralf Schmidt · Nuremberg, DE
• Walter Bauer · Munich, DE
• Kai-Achim Baldenhofer · Stuttgart, DE
• Bernard Jan Kamp · Ludwigsburg, DE
• Thomas G. Grau · Morristown, US

Key dates

• Filing date: Apr 1, 2004
• Grant date: Jun 9, 2009
• Expiry date: Nov 20, 2024

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01N2560/20
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A sensor for detecting particles in a gas flow, in particular soot particles in an exhaust gas flow, includes at least two measuring electrodes, which are positioned on a substrate made of an insulating material. To protect the measuring electrodes, they are covered by a protective layer.