DEVICE FOR DEPOLLUTING A HEAT ENGINE EXHAUST GASES
The invention concerns a device for depolluting a heat engine exhaust gases comprising an outer casing (23) including successive first and second tubular sections (38, 40), the first section (38) containing a first depolluting member (18) mounted in the passage, the first section including a female end (42) wherein is nested a male end (44) of the second section (40). The first depolluting member (18) comprises a substrate (19) and at least one wedge (50, 52) interposed between the inner surface of the first tubular section (38) and the substrate (19), the or each wedge (50, 52) consisting of a wire mesh associated with a heat-expansible material to provide exhaust gas proofness.