Exhaust-gas muffler

Details Exhaust-gas muffler Exhaust-gas muffler

1998-10-30

1999-09-28

Dang, Khanh

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181230, F01N 302

Patent

active

059592621

ABSTRACT:
The invention relates to an exhaust-gas muffler for a two-stroke engine in a portable handheld work apparatus such as a motor-driven chain saw. The muffler housing includes an outer shell and an inner shell and also includes an exhaust-gas inlet and an exhaust-gas outlet. A fire-protective screen is arranged in the exhaust-gas flow of the muffler. With the invention, a high service life of the fire-protective screen is achieved together with an easier exchangeability. This is achieved in that the fire-protective screen can be inserted from outside of the housing into the interior of the muffler. The screen covers the exhaust-gas inlet into an inlet chamber of the muffler. At this location, the temperature of the exhaust gas is high so that coking of the screen is very slight.

REFERENCES:
patent: 5440083 (1995-08-01), Masuda
patent: 5722237 (1998-03-01), Iida et al.
patent: 5883342 (1999-03-01), Wolpert

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