Silencer for vehicle engine has damping chamber surrounded by insulation chamber which is closed gastight from outside and on other side is connected through opening but without exhaust gas flowing through

摘要

The silencer has a damping chamber (27) surrounded at least in some areas by an insulation chamber (29) which on one side is closed gas-tight from the outside and on the other side is connected to the damping chamber through one or more openings but which does not have exhaust gas flowing through. The internal housing (23) of the silencer can be surrounded by a high-temperature resistant mat (49) or ceramic fibre or steel wool.