Methods and systems for an aftertreatment system

US11220941B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Joerg Kemmerling · Monschau, DE
• Christoph Boerensen · Aachen, DE
• Frank Wunderlich · Netphen, DE
• Michael Forsting · Rheydt, DE
• Helmut Matthias Kindl · Aachen, DE
• Hanno Friederichs · Aachen, DE
• Vanco Smiljanovski · Bedburg, DE
• Andreas Kuske · Geulle, NL
• Franz Arnd Sommerhoff · Aachen, DE

Key dates

• Filing date: Mar 5, 2020
• Grant date: Jan 11, 2022
• Expiry date: Mar 12, 2040

Classification

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

Abstract

Methods and systems are provided for an aftertreatment system. In one example, a method comprises regenerating a NOx trap during an engine shut-down event. The method further comprises reversing a direction of flow of a gas through a HP-EGR passage during the regenerating.