Muffling device for combustion engines

Details Muffling device for combustion engines Muffling device for combustion engines

1997-05-23

1999-03-16

Dang, Khanh

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181231, F01N 302

Patent

active

058833420

ABSTRACT:
A muffling device for a combustion engine of a hand-guided working tool has at least one housing member with at least one outlet opening for exhaust gas. An elongate cover member is positioned above the outlet opening for deflecting the exhaust gas into a main flow direction. The cover member has a longitudinal extension in the main flow direction. The cover member has a first end face with a main exhaust gas opening in the main flow direction through which a main exhaust gas stream exits into the surrounding atmosphere. The cover member has at least one lateral wall with at least one auxiliary exhaust gas opening through which a partial or auxiliary exhaust gas stream exits.

REFERENCES:
patent: 2152205 (1939-03-01), Morrison
patent: 2838129 (1958-06-01), Hesse et al.
patent: 4142607 (1979-03-01), Landwehr et al.
patent: 4231221 (1980-11-01), Mathner et al.

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