Exhaust gas silencer for internal combustion engine in portable powered appliance has resonance chamber sealed fluidtight in relation to damping chamber and through which is led exhaust gas-carrying resonance pipe

摘要

The exhaust gas silencer for an internal combustion engine has a casing (9,10) enclosing a noise damping chamber and with an inlet for exhaust gases from the engine, and an outlet. The silencer has a resonance chamber which is sealed fluidtight in relation to the damping chamber and through which is led an exhaust gas-carrying resonance pipe (7), whereby a sound connection exists between the resonance pipe and resonance chamber. The resonance pipe in the flow direction of the exhaust gases is installed between the damping chamber and outlet.