Diesel particulate trap mounting system.

摘要

A particulate trap assembly (10) including a tourniquet shell (19) for applying a predetermined radial pressure to a particulate trap (13) which is mounted in an outer housing (11) having wide manufacturing tolerances which do not effect the radial pressure applied to the trap (13) by the tourniquet shell (19). A mounting structure is disclosed for replaceably mounting the particulate trap (13) in the outer housing (11) in a manner providing substantially no obstruction to the full cross-sectional flow area of the gas flow path throughout the axial length of the particulate trap (13). Tourniquet shell (19) may be formed by a rectangular piece of sheet metal wrapped around resilient layer (20) covering particulate trap (13) so that the ends of tourniquet shell (19) are overlapping. The tourniquet shell is tensioned in some manner to compress the resilient layer (20) which transmits a desired degree of radial pressure to trap (13).