Patent ID: 7905939

Claim:
A filter body, comprising: an assembly of a plurality of filter blocks, particularly for filtering particulates present in the exhaust gases of an internal combustion engine, at least one of said filter blocks comprising: an inside, a periphery and an exterior; internal inlet and outlet channels arranged alternatively in the inside of said block; peripheral inlet ( 50 , 14 p 2 ) and outlet ( 52 , 14 p 1 ) channels arranged alternately at the periphery of said block and each comprising an external wall ( 44 ; 54 ; 40 1 , 40 2 ; 40 3 ) exposed to the exterior of said block and an internal wall ( 46 ; 56 ; 40 4 , 40 5 ; 40 6 , 40 7 , 40 8 ) arranged in the inside of said block, the transverse cross sections of the inlet channels being greater than the transverse cross sections of the outlet channels, and the thickness “e” of the internal walls ( 56 ) of the peripheral channels being identical to the thickness of the walls of internal channels, at least one group (G) of two adjacent peripheral channels ( 50 , 52 ) such that, in a transverse plane of section (P), a ratio “R*” of a minimum thickness “E min ” of all the external walls ( 44 , 54 ) of said group (G) to the thickness “e” of all the internal walls ( 46 , 56 ) being greater than 1.2 and less than 2.1, therefore forming a reinforcement, said reinforcement evolving, periodically or not, in a longitudinal or transverse plane.