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Passive NOX and PM Aftertreatment for Diesel Engine

Abstract: 

A method of reducing emissions by operating a diesel engine in a stoichiometric air-fuel ratio mode. To achieve an optimal stoichiometric mode, intake throttling, boost air intake control, fuel injection adjustments, and exhaust gas recirculation (EGR) are used. This mode of operation permits an aftertreatment system that has only an oxidation catalyst and a particulate filter.

Patent Number: 
8,316,633
Date Of Issue: 
11/27/2012
Inventors: 

Magdi K. Khair; Stefan Simescu; Gary D. Neely; Vlad L.C. Ulmet