Vibratory decoupling device for exhaust line comprises gas inlet and outlet and is welded between two exhaust line sections, and comprises undulating lining formed by metal bellows

摘要

The vibratory decoupling device has a gas inlet (11) and outlet (12). It is welded between two sections (91,92) of the heat engine exhaust line and comprises an undulated lining (2) constituted by a metal bellows. In addition there is a gas flow modification part (3) such as an annular relief (31) arranged on the gas inlet and extending in the direction of the gas outlet over a length (L) at least equal to a quarter of the distance (D) separating the inlet and outlet.