Exhaust system for a two-stroke engine

Details Exhaust system for a two-stroke engine Exhaust system for a two-stroke engine

1978-09-28

1980-02-05

Hix, L. T.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181268, 181272, 181275, 181281, 60314, F01N 108

Patent

active

041868196

ABSTRACT:
A hollow, generally conical member is provided in a cylindrical portion of a muffler shell and has a surface cooperating with the shell to compress oncoming exhaust gases, the surface being of a special curved configuration calculated for reflecting impinging gas flow in a non-linear pattern which results in the development of pressure waves that arrive at an open exhaust port of the engine at the proper time for providing efficient scavenging and/or supercharging. The generally conical member also serves as an expansion chamber and, in one embodiment thereof, an elongate tube is provided for conveying gases axially thereinto while elongate perforations are provided in the rear end wall thereof for conveying gases therefrom. In a second embodiment thereof, a plurality of radial openings are provided for conveying gases thereinto while a tube extends axially through an end wall thereof for conveying gases therefrom.

REFERENCES:
patent: 3354986 (1967-11-01), Moss et al.
patent: 3462947 (1969-08-01), Nowak
patent: 3530649 (1970-09-01), Porsch et al.
patent: 3842599 (1974-10-01), Ehlen

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