Method for regulating a filling of a reservoir of a catalytic converter for an exhaust gas component as a function of an aging of the catalytic converter

US10871116B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Martin Knopp · Lambach, DE
• Alexandre Wagner · Stuttgart, DE
• Michael Fey · Wiernsheim, DE

Key dates

• Filing date: Oct 2, 2019
• Grant date: Dec 22, 2020
• Expiry date: Oct 2, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method is presented for regulating a filling of an exhaust gas component reservoir of a catalytic converter in the exhaust of an internal combustion engine. Using a first catalytic converter model, an actual fill level of the exhaust gas component reservoir is ascertained. An aging state of the catalytic converter is determined; and a set of model parameters of the first catalytic converter model is allocated to the aging state; the individual model parameters being ascertained by interpolation from basic values of model parameters, the basic values having been determined for at least two different aging states of a catalytic converter of identical design.