Patent ID: 6312650
Filing Date: 2001-11-06
Classification: B01D,F01N,Y02T

Abstract:
An apparatus for silencing and purification of exhaust gases, comprising: an air-tight casing connected to an exhaust inlet pipe and to an exhaust outlet pipe and containing: at least two acoustic compartments, and one or more monolithic bodies defining an outer surface and having longitudinal passages through which exhaust gases flow in a flow direction, and one or more pipes or channels, at least one pipe or channel penetrating one or more of the monolithic bodies and guiding exhaust gases in a flow direction which is opposite to the flow direction in said longitudinal passages of the monolithic body, at least one of the pipes or channels connecting the at least two acoustic compartments, wherein said at least one pipe or channel connecting the at least two acoustic compartments extends throughout substantially the entire length of said monolithic body, and wherein said at least one pipe or channel penetrates the monolithic body or extends along its outer surface.