Muffler having Low Exhaust Back Pressure for Internal Combustion Engine

摘要

A low back pressure silencer for an internal combustion engine, comprising: a main body part having an interior divided into a rotary silence chamber and a resonance chamber; A gas inlet pipe provided at an upper portion of one side of the main body and connected to the exhaust pipe of the internal combustion engine so as to introduce exhaust gas; And a gas exhaust pipe communicating with the rotary noise-reducing chamber and extending outward to the other side of the main body through the resonance chamber to exhaust exhaust gas, wherein the rotary noise- A rotating shaft rotatably installed in a direction perpendicular to the traveling direction of the exhaust gas; A plurality of blades extending radially to an outer periphery of the rotating shaft to reduce noise of the exhaust gas; And a pair of disk members for sealing both side ends of the plurality of blades, wherein the gas exhaust pipe has a structure in which a plurality of through holes are formed on an outer periphery of an inner portion of the resonance chamber, The exhaust resistance is reduced to increase the output of the engine, to improve the fuel economy, and to attenuate the noise through the rotary noise chamber and the resonance chamber, thereby achieving sufficient noise performance.