Exhaust gas evacuation and treating circuit for supercharged combustion engine, has exhaust gas recycling branch connected to main branch by annular connector in which annular filter is positioned for filtering recycled gases

摘要

The circuit has a soot particle filter (6) placed along an exhaust gas flow direction. An exhaust gas recycling branch (7) is arranged between downstream of a compressor (42) of a turbo compressor (4) and an intake circuit (3) at upstream of the compressor. The recycling branch is connected to a main branch (2) by an annular connector in which an annular filter (9) is positioned for filtering recycled gases. The particle filter and the annular filter are provided in a single envelope containing an oxidation catalyst (5), forming the annular connector.