System and method of nox abatement

摘要

A NOx abatement system comprising: a first NOx adsorber ( 18 ) capable of being disposed in-line and downstream of and in fluid communication with an engine ( 12 ); a selective catalytic reduction catalyst ( 20 ) disposed in-line and downstream of and in direct fluid communication with the first NOx adsorber ( 18 ), wherein the selective catalytic reduction catalyst ( 20 ) is capable of storing ammonia; and an off-line reformer ( 24 ) disposed in selective communication with and upstream of the first NOx adsorber ( 18 ) and the selective catalytic reduction catalyst ( 20 ), wherein the reformer ( 24 ) is capable of producing a reformate comprising primarily hydrogen and carbon monoxide.