Exhaust gas muffler for a two-stroke engine

Details Exhaust gas muffler for a two-stroke engine Exhaust gas muffler for a two-stroke engine

1988-10-17

1989-09-19

Fuller, B. R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181240, 181256, 181258, 181262, 181269, 181282, 55DIG30, 60302, 60314, 60317, F01N 315, F01N 114

Patent

active

048672700

ABSTRACT:
The invention relates to an exhaust gas muffler for a two-stroke engine of a portable handheld tool such as a chain saw. The exhaust gas muffler includes a catalyzer wherein high exhaust gas temperatures are developed because of the exothermal reaction which takes place therein. The catalyzer is located in the forward portion of a gas-tight hollow body mounted in the housing of the muffler. The hollow body has a tapered portion which extends out of the housing in the direction of the exhaust gas flow. In this way, the surface temperature of the muffler housing is reduced.

REFERENCES:
patent: 3644098 (1972-02-01), DePalma et al.
patent: 4060985 (1977-12-01), Fukushima
patent: 4370855 (1983-02-01), Tuggle

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