Block for filtering particles contained in exhaust gases of an internal combustion engine

摘要

A filter block, particularly for filtering particulates present in the exhaust gases of an internal combustion engine, including peripheral inlet ( 50,14 p₂) and outlet ( 52,14 p₁) channels arranged alternately at the periphery of the block and each including an external wall ( 44;54 ;40 ₁ ,40 ₂ ;40 ₃) exposed to the exterior of the block and an internal wall ( 46 ;56 ;40 ₄ ,40 ₅ ;40 ₆ ,40 ₇ ,40 ₈) arranged inside the block. The block according to the invention is remarkable in that it includes at least one group (G) of two adjacent peripheral channels ( 50,52 ) such that, in a transverse plane of section (P), the ratio R of the average thickness "E" of all the external walls ( 44,54 ) of the group (G) to the average thickness "e" of all the internal walls ( 46,56 ) of the (G) is greater than 1.2.