A bimodal catalyst-Urea SCR system for enhanced NOx conversion and durability

摘要

The present invention discloses a method and system for reducing NOx in exhaust gases of an internal combustion engine by to converting the NOx from an engine into roughly a 50:50 mixture of NO and NO2 while simultaneously oxidizing the hydrocarbons from the engine which interfere with the reduction of NOx by urea or ammonia.