Two-stroke internal combustion engine
AssigneeAktiebolaget Electrolux
InventorsGordon P. Blair, Reine Gustafsson
Life of this patent
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Abstract
A two-stroke internal combustion engine (1) is provided with a muffler device (2). In one example, the engine (1) is intended for a working tool, such as a chain saw or a trimmer. A pipe (3), which either is straight or bent, and having an adapted or tuned length and a closed outer end (4), is arranged in connection to the engine's exhaust port (5) as well as an outlet (6), which leads the exhaust gases to the surrounding air. By this arrangement of the pipe (3) and the outlet (6) the scavenging losses are reduced and thereby the specific fuel consumption is reduced and cleaner exhaust gases are achieved.
Claims11
An internal combustion engine (1) of two-stroke type and provided with a muffler device (2), characterized in that a pipe (3), having a tuned length and a closed outer end (4), is arranged in connection to an engine exhaust port (5), as well as an outlet (6), having a smaller cross-section area than the pipe 3, which leads the exhaust gases to the surrounding air.
Dependencies are inferred from the claim text.