Air intake silencer for a two-stroke engine

Details Air intake silencer for a two-stroke engine Air intake silencer for a two-stroke engine

1998-03-11

1999-12-07

Dang, Khanh

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181229, F01N 124

Patent

active

05996734&

ABSTRACT:
An air intake noise suppression device comprises a housing defining a passage having a relatively small height, preferably no greater than one-half inch, and a length defined by the expression ##EQU1## where H is the height of the passage and f is the desired noise frequency to be suppressed. The width of the passage is selected to be large enough to provide an adequate supply of intake air to the engine. With the passage essentially defining a relatively narrow slot, it is filled with acoustic boundary layers that accentuate noise significantly over a relatively wide frequency range.

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