Method for monitoring a component situated in an exhaust gas region of an internal combustion engine

US7263434B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Wolfgang Ripper · Stuttgart, DE
• Stefan Wickert · Albershausen, DE
• Torsten Handler · Stuttgart, DE
• Dirk Samuelsen · Ludwigsburg, DE
• Klaus Mueller · Tamm, DE

Key dates

• Filing date: Nov 24, 2004
• Grant date: Aug 28, 2007
• Expiry date: Nov 24, 2024

Classification

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

Abstract

A method for monitoring a component situated in an exhaust gas region of an internal combustion engine in which the low pass behavior, which is determined by the heat capacity of the component, is monitored by a valuation of a measure of a first exhaust gas temperature, which appears upstream of the component that is to be monitored, and of a second exhaust gas temperature, which is recorded by a second temperature sensor downstream from the component to be monitored.