Dosing module for use in aftertreatment systems for internal combustion engines

US12060822B2 · kind B2 · utility

Assignee

• Cummins Emission Solutions Inc. · US

Inventors

• Ralf Rohrmueller · Wertheim, DE
• Thomas Kreser · Lohr, DE
• Christian Geiss · Großostheim, DE
• Jonas Hofmann · Esselbach, DE
• Jakob Stang · Marktheidenfeld, DE
• Friedrich Zapf · Karlstadt, DE
• Harald Breitenbach · Marktheidenfeld, DE

Key dates

• Filing date: Apr 13, 2017
• Grant date: Aug 13, 2024
• Expiry date: Nov 13, 2038

Classification

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

Abstract

An aftertreatment system includes an inlet exhaust section, an outlet exhaust section, a first aftertreatment component, a first dosing module, and a second dosing module. The inlet exhaust section receives exhaust. The outlet exhaust section is in fluid communication with the inlet exhaust section. The first aftertreatment component receives the exhaust from the inlet exhaust section, treats the exhaust, and provides the exhaust to the outlet exhaust section. The first dosing module is positioned along the inlet exhaust section. The first dosing module is structured to selectively dose the exhaust with reductant. The second dosing module is positioned along the outlet exhaust section. The second dosing module is structured to selectively dose the exhaust with the reductant.