Abstract:
A lean sulfur trap and a rich sulfur trap are arranged to prevent the passage of sulfur-containing exhaust gases through a sulfur-sensitive component of an aftertreatment system. After a determined period of operation, the lean sulfur trap and rich sulfur trap are purged in sequential operations, during which time exhaust gas flow is diverted around the sulfur-sensitive component, and then restored after purging of the traps.
Patent Number:
6,348,177
Date Of Issue:
02/18/2002
Inventors:
Gordon J. Bartley; Magdi Khair
Full Text: