Hybrid doser

US11459927B2 · kind B2 · utility

Assignee

• Faurecia Emissions Control Technologies, USA, LLC · US

Inventors

• Shashidhara Rajashekharaiah · Columbus, US
• Edward Kinnaird · Columbus, US
• Atul Shinde · Pune, IN

Key dates

• Filing date: Nov 30, 2020
• Grant date: Oct 4, 2022
• Expiry date: Nov 30, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01N2900/1411
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An exhaust component assembly for a vehicle exhaust system includes a housing defining an internal cavity configured to receive an exhaust gas after-treatment component. A first chamber is in fluid communication with the internal cavity upstream of the exhaust gas after-treatment component. A first nozzle introduces fluid into the first chamber and a first valve controls flow of the fluid from the first chamber into the internal cavity. A heat source is associated with the first nozzle or first chamber. A second chamber is in fluid communication with the internal cavity upstream of the exhaust gas after-treatment component, and the second chamber is a non-heated chamber. A second nozzle introduces fluid into the second chamber and a second valve controls flow of the fluid from the second chamber into the internal cavity. A controller controls the first and second valves based on at least one predetermined operating condition.