Recent Developments in Emission Control
Dr. Christine Lambert
Ford Motor Company
Monday, August 8, 2016 at 3:15pm
Ben Bandy Conference Center
UK Center for Applied Energy Research
Modern emission control devices for gasoline and diesel powertrains evolved over decades of development to meet ever more stringent emission standards. For example, the U.S. standards for nitrogen oxides (NOx) have decreased by 97% from 1974 to 2004. The most well-known device, the three-way catalyst, is used under stoichiometric conditions of spark-ignited engines and controls hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOx). Newer devices include diesel oxidation catalysts, Selective Catalytic Reduction (SCR) systems for NOx, and diesel soot filters. The latest diesel emissions certifications in the U.S. include multifunctional devices like diesel soot filters with SCR catalytic coating. As emission standards continue to tighten in U.S., Europe, and China, research is focusing on HC traps, low temperature NOx adsorbers, N2O mitigation, and gasoline soot filters.