Systems and methods for controlling a dosing module

US12209521B2 · kind B2 · utility

Assignee

• Cummins Emission Solutions Inc. · US

Inventors

• Masoud Ziabakhsh Deilami · Columbus, US
• Joe V. Hill · Middlesbrough, GB
• Jens Honeck · Tauberbischofsheim, DE
• Ralf Rohrmueller · Wertheim, DE

Key dates

• Filing date: May 24, 2024
• Grant date: Jan 28, 2025
• Expiry date: May 24, 2044

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01N2900/1808
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

An exhaust aftertreatment system includes a first decomposition chamber that receives exhaust and treatment fluid, a first dosing module that includes a first injector that injects the treatment fluid into the first decomposition chamber, and a second decomposition chamber disposed downstream of the first decomposition chamber and that receives the exhaust and the treatment fluid from the first decomposition chamber. The exhaust aftertreatment system further includes a second dosing module that includes a second injector that injects the treatment fluid into the second decomposition chamber and a pressure sensor that generates a pressure signal based on a pressure of the treatment fluid in the second dosing module. The exhaust aftertreatment system further includes a variable resistor selectively switchable between multiple resistances.