Effect of Fast Cycling on the Formation of HC Intermediates and NOx Conversion Using H2, Propene or Propane As Reductants

摘要

A combined experimental and modeling study of fast cycling NOx storage and reduction for emissions control of lean burn gasoline and diesel vehicles is conducted to provide mechanistic insight. Experiments reveal notable NOx conversion enhancement for cycle times less than 10 seconds (fast cycling) compared to long cycle times of a minute (Fig. 1, Perng et al. Catalysis Today 231 (2014) 125–134 [HMP1] [TA2] ).