Patent ID: 7386977

Claim:
An aftertreatment system for treating NOx within exhaust gases produced during combustion of a fuel within a combustion chamber of an internal combustion engine system, the aftertreatment system comprising: (a) an exhaust line connected to carry exhaust gases from the combustion chamber to a NOx adsorber; (b) a reformer generating hydrogen and carbon monoxide from a gaseous hydrocarbon; (c) an oxidizer reducing the oxygen concentration of a first quantity of air; (d) a first gas line connected to deliver a first quantity of the gaseous hydrocarbon from a gaseous hydrocarbon store to the reformer; (e) a regeneration line directing a regeneration mix into the exhaust line upstream of the NOx adsorber and downstream of the combustion chamber, the regeneration mix comprising the hydrogen and carbon monoxide from the reformer and the first quantity of air from the oxidizer, the reformer and the oxidizer disposed in the regeneration line; and wherein an output of the oxidizer is connected to an input of the reformer and an output of the reformer is connected to the regeneration line.