Patent ID: 7117667
Filing Date: 2006-10-10
Classification: B01D,F01N,Y02A,Y02T

Abstract:
1. An internal combustion engine aftertreatment system for treating exhaust gases exiting an engine, the system comprising: a sulfur trap having a sulfur trap input operatively coupled to the engine exhaust and having a sulfur trap output; a catalytic soot filter having a soot filter input operatively coupled to the sulfur trap output and having a soot filter output; a valve system having a valve input operatively coupled to the soot filter output, a first valve output and having a second valve output; an NOx adsorber having an adsorber input operatively coupled to the first valve output and having an adsorber output; a bypass pathway having a bypass input operatively coupled to the second valve output and having a bypass output operatively coupled to the adsorber output; and a diesel oxidation catalyst having a DOC input operatively coupled to the adsorber output and to the bypass output and having a DOC output.