International Engine Intellectual Property Company, LLC

Umang Khanna

Navtej Singh

Bradley Jay Adelman

Diesel Exhaust Fluid is metered into an engine exhaust gas aftertreatment system having a close coupled SCR catalyst and a main SCR catalyst. The DEF is injected into two injector locations, one upstream of the close coupled SCR catalyst and another upstream of the main SCR catalyst, the quantity of DEF in each injector being based on primarily the temperature at the main SCR catalyst and the mass flow of the NOx through the aftertreatment system. This method of injection enables a relatively better fuel economy outcome while meeting the regulated tailpipe NOemission levels and the NO formation limits.

Growing community of inventors

Chicago, IL, United States of America

Umang Khanna