The exhaust volume, to form vehicle silencer, is contained within en external envelope, which is formed as a continuous wall, with stiffeners, which are attached to a prescribed percentage of the wall.

摘要

The exhaust volume is contained within an external envelope (10), which limits the circulation of the exhaust gas. It is formed with at least one continuous wall (16, 20, 22, 24) and the length of this wall is supported by at least stiffening piece (26A, 26B, 30, 32, 34). This, or each stiffener, extends only over part of the continuous wall, with the covered surface of the continuous wall, representing between 10 and 50 per cent of the total surface of the wall.