EXHAUST MUFFLER OF INTERNAL COMBUSTION ENGINE Russian patent published in 2000 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: proposed muffler has housing with end face walls, inlet and outlet branch pipes and noise suppressing member placed in housing and made in form of longitudinal flexible plates mated by ends with end face walls. Walls can turn through some angle relative to each other around axis of housing. Plates of equal or different rigidity can be used. Plates are tuned in resonance with pulsating flow of gas depending on engine speed. EFFECT: reduced engine power losses at silencing the exhaust. 3 cl, 6 dwg