CONTINUOUS ROTARY REGENERATION SYSTEM FOR A PARTICULATE TRAP

摘要

An apparatus and method for continuously regenerating a particulate filter trap comprises: movable means effective to shield a segment of the trap entrance face from the full flow of exhaust gas while permitting a portion of the exhaust gas flow to bleed therethrough; (b) electrical resistance heating means having a movable heating element carried by the shield and interposed between the trap face and the shield; and (c) means for substantially continuously moving the shield and element conjointly across the trap face to ignite one or more columns of the particulates in the trap aligned with the shield and element. The ignited particles and bleed flow cause oxidation to proceed throughout the extent of the columns of particulates without need for additional exterior heat.