Heating device

US6888109B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Detlef Heimann · Gerlingen, DE
• Torsten Handler · Stuttgart, DE
• Lothar Diehl · Stuttgart, DE
• Dieter Lindauer · Rochlitz, DE
• Dietmar Seizinger · Esslingen am Neckar, DE

Key dates

• Filing date: Nov 13, 2001
• Grant date: May 3, 2005
• Expiry date: Jun 9, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/4067
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A heating device for a gas sensor, in particular for use in the exhaust gas analysis of internal combustion engines, including a heating element having an electrical resistor layer. The heating element is embedded in a first insulation which in turn is surrounded, at least in part, by a second insulation. The first and the second insulation have different porosities.