Patent ID: 7191592
Filing Date: 2007-03-20
Classification: F01N,F15D,Y02T

Abstract:
1. A method for controlling gas flow into a combustion engine exhaust gas filter which comprises: providing a fluidic exhaust stream diverter proximate to an inlet face of the filter, the filter being a ceramic honeycomb wall-flow filter for separating soot from an engine exhaust stream by capture on porous channel walls of the filter as the exhaust stream is forced through said walls in traversing from an array of filter inlet channels to an adjacently interspersed array of filter outlet channels, the diverter being positioned on or adjacent to a longitudinal filter axis, the filter axis being oriented parallel to the direction of exhaust gas flow into the filter and substantially centrally of an inlet face thereof; and activating the fluidic diverter to divert exhaust gas flow away from an axial portion of the filter disposed on or proximate to the longitudinal filter axis.