Exhaust device of internal combustion engine

摘要

Object An exhaust device of an internal combustion engine is provided that can achieve both a reduction in exhaust sound and the suppression of occurrence of a torque valley. Solving Means A sound-deadening and pressure-dissipating device (72) connected to the downstream end of an exhaust pipe (71) includes a spherical member (90) having an opening portion (91) opening toward a downstream edge (71 a) of the exhaust pipe (71). Exhaust gas from the exhaust pipe (71) is made to be reflected by an inner spherical surface (90a) of the spherical member (90) to reduce exhaust pressure in the spherical member (90) and then is discharged from the opening portion (91).