JPS62110514U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an exhaust muffler according to an embodiment of the invention, and FIG. 2 is an explanatory diagram showing the flow of exhaust gas flowing out from the exhaust outlet pipe of FIG. 1. 15...first expansion chamber, 17...second expansion chamber, 19...
First resonance chamber, 21...Third expansion chamber, 23...Second resonance chamber, 25...Exhaust inlet pipe, 35...Exhaust outlet pipe, 37
...Exit pipe.

Claims (1)

[Scope of utility model registration request] In a silencer having an exhaust inlet pipe, a plurality of quenching chambers for muffling exhaust gas flowing in from the exhaust inlet pipe, and an exhaust outlet pipe for discharging the muffled exhaust gas, the exhaust gas is discharged to any of the plurality of silencing chambers. An exit pipe is provided that leads directly to the exit pipe bypassing the silencing chamber on the way, and the exit pipe has a smaller diameter than the exhaust exit pipe and is arranged coaxially with the exhaust exit pipe, and the exhaust exit pipe projects toward the atmosphere from the exit pipe. The exhaust outlet pipe and the outlet pipe are connected to the atmosphere so that there is air in a substantially stationary state with respect to the exhaust flow near the outlet between the exhaust flow discharged to the atmosphere from the exhaust outlet pipe and the outlet pipe. An exhaust muffler for an internal combustion engine, characterized in that a gap is provided between openings.