EXHAUST MUFFLER OF INTERNAL COMBUSTION ENGINE Russian patent published in 2003 - IPC

FIELD: mechanical engineering. SUBSTANCE: invention relates to exhaust mufflers and it can be used mainly for engine of portable gasoline engine-powered saws. proposed muffler contains chamber in form of ellipsoid formed by two stamped out hermetically interconnected halves, seating flange with intake hole, branch pipe through which combustion products get out into atmosphere. Volume of chamber is equal to 6-8-fold volume of engine cylinder. EFFECT: improved reduction of exhaust noise in range of about 1000 Hz. 1 dwg