Method and device for controlling an exhaust gas aftertreatment system

US6769246B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Rainer Strohmaier · Stuttgart, DE
• Stefan Zimmermann · Laufenbürg, DE
• Martin Bauer · Birkenfeld, DE

Key dates

• Filing date: Oct 11, 2002
• Grant date: Aug 3, 2004
• Expiry date: Oct 11, 2022

Classification

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

Abstract

A method and a device are provided for controlling an exhaust gas aftertreatment system, for example, an exhaust gas aftertreatment system of an internal combustion engine. A first quantity characterizing the amount of substances supplied to the exhaust gas aftertreatment system, based on first characteristic operating quantities, is determined in a first operating state. A second quantity characterizing the amount of substances removed from the exhaust gas aftertreatment system, based on second characteristic operating quantities, is determined in a second operating state. The first quantity and the second quantity are then compared for error detection.