Method and device for operating an exhaust gas aftertreatment device of an engine system including an internal combustion engine

US10851696B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Alexandre Wagner · Stuttgart, DE
• Michael Fey · Wiernsheim, DE

Key dates

• Filing date: May 3, 2019
• Grant date: Dec 1, 2020
• Expiry date: May 3, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for operating an engine system including an internal combustion engine and an exhaust gas aftertreatment device, including: carrying out a fill level control to control a fill level of the exhaust gas aftertreatment device as a function of a predefined fill level setpoint value; operating a pilot control for the fill level control; and adapting the pilot control as a function of a deviation between a measured lambda value and a modeled lambda value.