Method and device for monitoring a signal

US7318341B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Rainer Strohmaier · Stuttgart, DE
• Holger Plote · Fellbach, DE
• Andreas Krautter · Steinheim, DE
• Stefan Zimmermann · Laufenbürg, DE
• Michael Walter · Kornwestheim, DE
• Juergen Sojka · Gerlingen, DE

Key dates

• Filing date: Feb 26, 2002
• Grant date: Jan 15, 2008
• Expiry date: Feb 26, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

A method and a device for monitoring a signal, in particular a pressure signal that characterizes the pressure differential at the input and output of an exhaust after-treatment system, are described. Errors are recognized on the basis of the occurrence of oscillations in the sensor signal.