| 摘要 |
A silencer for a vehicle engine exhaust system, wherein the silencer is constituted by at least one duct which acts as a guide for exhaust gas and as an acoustic attenuator for exhaust noise, and which comprises at least one porous internal metal tubular element, intermediate thermal and acoustic lagging, and a leaktight outer covering of polymer material, and wherein the outer covering is connected in leaktight manner to two tubular metal connection devices via two metal caps.
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