Simultaneous Reduction of PM, HC, CO and NOx Emissions from a GDI Engine

Abstract

<div class="section abstract"><div class="htmlview paragraph">Particulate Matter (PM) emissions from gasoline direct injection (GDI) engines are becoming a concern and will be limited by future emissions regulations, such as the upcoming Euro 6 legislation. Therefore, PM control from a GDI engine will be required in addition to effective reduction of HC, CO and NO<sub>x</sub> emissions.</div><div class="htmlview paragraph">Three different integrated aftertreatment systems were developed to simultaneously reduce PM, HC, CO and NO<sub>x</sub> emissions from a preproduction Ford 3.5L EcoBoost GTDI engine, with PM reduction as the major focus. PM reduction efficiencies were calculated based on the measurements of PM mass and solid particle number. Test results show that tradeoffs exist in the design of aftertreatment systems to significantly reduce PM emissions from a GDI engine.</div></div>