Norgren's Air Intake Throttle precisely regulates airflow so that emissions control systems operate at peak efficiency. Common techniques for reducing nitrogen oxides (NOx) and particulate matter or soot to meet 2013 EPA Tier IV Final Emissions Regulations include Exhaust Gas Recirculation (EGR), Selective Catalytic Reduction (SCR) and Diesel Particulate Filters (DPF). When used as a tandem they manage the airflow essential for boosting the EGR while maintaining high exhaust temperatures for maximum SCR and DPF efficiency.
